Diogo Peralta Cordeiro

I am a computer scientist and software engineer from Porto, Portugal, completing a PhD in Computer Engineering at the University of Porto.

• Turn ambiguous technical problems into architecture, milestones, working software and documentation across 8+ years of research and engineering.
• Led an EU Horizon 2020-funded GNU social rewrite, replacing legacy foundations with a Symfony-based architecture while coordinating releases, accessibility and community work.
• Mentored 13 student developers across Google Summer of Code, a community programme and FEUP project teams, combining code review with written technical guidance.
• Work comfortably across PHP/Symfony, SQL, Linux, distributed systems, dependable computing, robotics, spatial interaction and technical education.

C++ was my primary implementation language throughout the PhD, spanning spatial-interaction runtimes, computer-vision integration and application contracts.

Leadership style. I work well in high-agency teams: written decisions, explicit trade-offs, small milestones, visible risks and a bias toward maintainable systems rather than clever one-offs.

Technical communication. I can move between code, architecture, project plans, teaching material and stakeholder conversations. I care about making complex systems understandable enough that others can operate, extend and teach them.

Mentoring. I have mentored student developers and taught technical workshops. I treat mentoring as an engineering multiplier: better explanations reduce future coordination cost and improve quality.

• C++: primary language throughout the PhD, including spatial-interaction runtimes and systems architecture.
• PHP and SQL: production applications, open-source platforms and data models.
• Python: research, experimentation, data analysis and tooling.
• C, Java, JavaScript, Haskell and Prolog: systems, web and computer-science projects.
• Bash, Linux and Git: daily development and deployment.

• Algorithms, data structures, optimisation: CS/research foundations
• Computer vision and machine perception: doctoral/research work
• Experimental design and technical reporting: research delivery
• LaTeX and scientific writing: papers/thesis

• Technical architecture and roadmap ownership: CTO/open-source/founder roles
• Mentoring, code review and documentation: students/contributors
• Stakeholder communication and technical training: client/research settings
• Agile/project planning, risk and milestones: PM foundations

• Projection-based AR / Pro-Cam systems: PhD/Spectaria
• Raspberry Pi, sensors, embedded integration: robotics/ASV work
• Dependable systems and interface reasoning: aerospace context

• Portuguese: native
• English: C1 - Cambridge CAE; C2 in Reading/Use of English

• Debian/Linux server administration: homelab since 2016
• Docker / Docker Compose: self-hosted services
• Backups, restore drills, monitoring: ops hygiene
• LUKS, SSH keys, fail2ban, firewalling: hardening mindset
• Nextcloud, Mailcow, Gitea, Matrix/Synapse, ntfy: operated services

• Symfony, Doctrine ORM, PHP-FPM: GNU social / web apps
• REST-style APIs, ActivityPub, WebFinger: distributed web protocols
• HTML5, CSS3, accessibility, responsive UI: user-facing web
• SQLite, MySQL/MariaDB, Redis: data/cache layers
• Nginx, Apache, Let's Encrypt: web serving/TLS

Engineering ownership. Led an EU Horizon 2020-funded open-source platform rewrite, coordinating architecture, implementation, accessibility, plugins, releases and community communication.

Team multiplier. Mentored 13 student developers across three programme formats, using reviews, milestones and documentation to turn learning into shipped work.

Research-to-system translation. Connected dependable computing, robotics, machine perception and spatial interaction research to deployable software constraints.

Execution discipline. Structure projects around four practical workstreams: architecture, implementation, operations and stakeholder communication.

Stakeholder fluency. Turn research, business and institutional constraints into written decisions, bounded milestones and testable delivery criteria without losing technical precision.

Teaching practice. Delivered 11 recorded engagements on Git, dependable computing, embedded systems and decentralised networks, with four talks turned into reusable public resources.

Mentoring. Supported 13 students through code review, architecture guidance and incremental delivery across GSoC, a community-funded programme and FEUP teams.

Pedagogy. Completed evidence-based undergraduate STEM teaching training and Portuguese trainer certification, applying active learning to practical technical competence.

Work posture. Comfortable with English-speaking, distributed and documentation-heavy environments. I am drawn to teams where the work means raising technical quality, reducing ambiguity and helping others do their best work.

• Designed a four-layer product architecture combining Pro-Cam units, removable NFC/button controls, a web Studio/Manager and privacy-aware aggregated indicators.
• Turned doctoral prototypes into a deployment model covering calibration, installation, operation, support and institutional stakeholder material.
• Reduced dependence on one-off exhibition code by framing spatial interaction as reusable, maintainable museum infrastructure.

• Delivered private/internal web tools across four layers: data modelling, backend logic, administration and reporting.
• Converted scheduling, resource-allocation and operational constraints into optimisation-oriented prototypes and usable web workflows.
• Improved adoption by pairing PHP/SQL/JavaScript implementation with documentation, tailored training and client-facing technical support.
• Analysed business systems and translated findings into scoped improvements, implementation plans and maintainable operating procedures.

• Led development of GNU social v3 with EU Horizon 2020 NGI0 Discovery funding, owning architecture, maintainability, accessibility, plugin boundaries and release planning.
• Replaced legacy PEAR-era foundations with a Symfony-based application structure to make a long-running federated platform easier to extend and operate.
• Coordinated contributor and student delivery through written milestones, code review, documentation and public community communication.

• Organised Google Summer of Code at GNU social in 2019 and 2020, mentoring four developers through core rewrite, frontend, federation and storage work.
• Created a community-funded Summer of Code equivalent and mentored one additional developer in 2020.
• Supported eight fourth-year FEUP software-engineering students, bringing the total to 13 mentored students across three programme formats.
• Used milestones, architecture guidance and code review to move student work into a long-running public free-software platform.

• Won two competitive funding programmes—IAPMEI StartUP Voucher and a Grant for the Web flagship grant—by turning the product idea into a credible technical and delivery plan.
• Owned architecture, engineering roadmap, team coordination and delivery from inception through funded product development.
• Balanced product discovery with implementation constraints in a venture-backed, early-stage environment at UPTEC.

• Contributed on-board data-handling and dependable-computing work to ANTAEUS, a 2U CubeSat mission in high-energy astrophysics.
• Connected embedded constraints, reliability, interfaces, documentation and hardware/software coordination across three Portuguese universities.
• Helped the project reach pre-selection for ESA’s Fly Your Satellite Design Booster programme.

• Surveyed state-of-the-art parametric human-body models and built the infrastructure needed to evaluate them reproducibly.
• Turned model outputs into a structured technical comparison another researcher could inspect and extend.
• Produced the best-ranked work in the MCT category according to the Summer@CTM 2022 jury.

• Helped develop a low-cost autonomous surface vehicle and docking station under an FCT BII research grant.
• Combined vector-field trajectory guidance with close-range camera target tracking inside the LSTS toolchain.
• Integrated four onboard components—IMU, GPS, camera and Raspberry Pi 4—within an interdisciplinary student engineering team.

• Operate 10+ Linux services spanning cloud storage, source hosting, email, Matrix, notifications, documentation, file transfer, XMPP/IRC and health monitoring.
• Protect filesystem data, databases, configuration and TLS material with documented encrypted backup and recovery workflows.
• Harden Nginx/PHP-FPM, TLS, SSH, service accounts and network access through least privilege, monitoring, log review and operational runbooks.

• Led E-42, Porto Space Team’s Software and Computer Engineering department, for the INVICTUS student rocketry project.
• Coordinated requirements and architecture studies, mentored members and reviewed work on telemetry integration and PX4 simulation.
• Established onboarding and periodic reporting, compiled the INVICTUS Computing SitRep and delivered training on dependable real-time systems.

Implemented the W3C ActivityPub protocol as a GNU social plugin during Google Summer of Code 2018, extending federation support in a mature public codebase. Technical report: go.diogo.site/gsoc2018.

• Built a custom PHP/SQLite content and CV system serving three public properties: the main site, interactive CV and Logbook.
• Combined editable page and CV data, profile-specific output, PDF generation and a long-running technical archive in one maintainable system.
• Applied semantic HTML, accessibility checks, structured metadata, privacy controls and Linux/Nginx deployment practices.
• Kept public-safe documentation separate from private operational detail while retaining real evidence of systems administration.

Supervisor: Prof. João Tasso de Figueiredo Borges de Sousa.

Research area: software-intensive interactive systems, machine perception, spatial/projection-based interaction, robotics-adjacent sensing and systems engineering.

Relevant activities:

• Previously led the Software and Computer Engineering department at Porto Space Team (INVICTUS, 2022–2023).
• Contributed to the ANTAEUS CubeSat project.
• Technical talks and workshops for engineering audiences.
• Research-to-deployment work connecting prototypes, users, evaluation and maintainable software.

Primary implementation language: C++. Used C++ throughout the PhD for spatial-interaction and systems research.

180 ECTS, of which 54 ECTS in Mathematics.

Activities and societies:

• Member of EUGLOH's Joint Curricula Design work package and Student Board (2020-07-13 → 2021-07-30)
• Member of the Faculty of Sciences' Pedagogical Council (2019-11-05 → 2022-06-17)
• Freshers' teaching assistant for the Computer Science Department (2019-09-10 → 2021-07-30)
• Founding member of the Hackers at Porto student society (since 2017-11-01)

Key contents:

• Mathematics — numerical analysis, stochastic processes, operations research, linear algebra, analytic geometry, multivariable calculus, differential equations
• Computing theory — graphs, logic and proof, computability, complexity, reactive systems
• Computer systems — computer architecture, computer networking, operating systems
• Programming — compiler construction, advanced algorithms and data structures, multiprocessor programming
• Applications and professionalism — intelligent systems, interaction design, security, privacy, databases
• Electrical engineering — automatic control, digital signal processing

The course introduces the development process of an entrepreneurial project, the entrepreneurial mindset needed for that process, and the dynamics of teamwork — skills called for by a global society facing challenges that need new, creative solutions under uncertainty.

It concluded with a two-day hackathon in which teams delivered a solution to a challenge in Global Health. Out of six competing teams, ours was ranked best.

The course provides an understanding of society's challenges and the functions necessary for resilience in the face of events threatening safety and sustainability, and of approaches for contributing to societal resilience through disaster-risk management and climate-change adaptation for sustainable development in a changing world. It also forms a foundation for research in these areas.

Designed around critical thinking on societal safety and sustainability, it is structured in modules with lectures, seminars and role-play that illuminate central concepts, questions, challenges and functions for societal resilience, following case studies from countries with different conditions.

A training week introducing university students to the concurrent design of a CubeSat mission. Guided by ESA experts, students learn to use COMET (Concurrent Model-based Engineering Tool) and to identify design drivers; divided into teams, they first create a subsystem concept and then realise an identified mission concept, function tree and product tree using concurrent engineering.

Key topics:

• Introduction to concurrent engineering, systems engineering and requirements — Robin Biesbroek
• CubeSat missions and technologies — Camille Pirat
• CubeSat architectures — Ilja Skrypnyk
• Increasing RAMS for CubeSats — Silvana Radu

ANTAEUS, a prospective Fly Your Satellite! Portuguese team, attended this training week to deepen its knowledge of spacecraft design and project management.

Covered topics included: project management principles and COTS; legal aspects of CubeSat missions; communications and outreach; systems engineering principles; AIV and testing; introduction to MBSE; data-handling subsystem design and verification; flight-software development; EPS design and verification; structural, thermal and mechanisms design and verification; project management for CubeSats; AOCS design and verification; spacecraft operations; TT&C and ground segment; RAMS of CubeSats (FMEA, HSIA, FDIR); space-debris mitigation and trackability; and CubeSat mission analysis — delivered by ESA specialists including Alexander Kinnaird, Tomasz Szewczyk, Volkan Salma, Silvana Radu and David Evans.

A programme designed to prepare entrepreneurs for the challenges of creating and developing a new business project. Over three months, participants work with new tools, concepts, structures and people that help validate an idea in the market.

Covered topics included: business models; patents and protecting intellectual property; differentiation and strategy; pricing, marketing and selling; problem mapping; public communication; structuring a pitch; fundraising from venture capital; doing business with the USA; taxes; term sheets; and digital marketing.

Taught by professors Carlos Daniel Paulino and Giovani Loiola da Silva, and promoted jointly by the University of Porto's Mathematics Centre (CMUP) and the University of Lisbon's School of Engineering (IST-UL).

Topics: Bayes' theorem and the essence of Bayesian methodology; representation of a-priori information (non-informative and natural conjugate distributions); applications to problems with exact or asymptotic solutions (linear Gaussian models, categorical data); inference by stochastic simulation and traditional Monte Carlo; model evaluation, selection and comparison; MCMC methods and their implementation in OpenBUGS/JAGS; applications to practical problems across scientific fields.

A 36-hour course on the acquisition, processing and analysis of EEG signal, held at the Laboratory of Neuropsychophysiology. Topics included introductions to EEG and ERP, ERP research design, principles of EEG data collection, signal processing and data extraction, statistical analysis of ERP data, and reproducibility and open-science practices in EEG/ERP research — taught by Fernando Ferreira-Santos, Fernando Barbosa, Tiago O. Paiva and colleagues.

Organised by the Research Centre for Systems and Technologies (SYSTEC) in collaboration with the ARISE associated laboratory, providing experience with applications of cyber-physical systems in robotics, energy, mobility, production systems and health.

Covered topics: introduction to drones; deep and machine learning; optimisation; path-following control for autonomous vehicles; optimisation in industrial settings; designing robotic solutions with freeware tools; and electric mobility case studies.

Introduction to Robotics for Ocean Observations, Archaeology and Ecosystems Mapping.

Topics and lecturers included: terminology and basic concepts in maritime robotics, and models, planning and control — João Tasso de Sousa (LSTS); sensors — Paulo Dias; vehicles — Maria Costa; underwater communications and multi-vehicle planning — José Pinto; the LSTS/OceanScan toolchain — Keyla Lima; AI in maritime robotics — Kanna Rajan (NTNU); ocean observation — researchers from PLOCAN, PROOCEANO, MaREI, CIIMAR and the MIT Media Lab; applications in archaeology — Filipe Castro (Texas A&M); mapping applications — Trygve Fossum (NTNU); the legal regime of maritime robotics — Eliana Silva Pereira (CIIMAR); and mechanical design — João Galante (LSTS).

Topics: biomedical data collection, signal processing and analysis; artificial intelligence and machine learning in natural-language processing, biological image analysis and gene-expression analysis; image-processing applications; from literature knowledge to mechanistic modelling; health data science and management; statistical decision making; and dissemination of scientific results.

Large-scale facilities offer unique opportunities to explore materials and living matter. This four-day intensive course on the SOLEIL synchrotron, the MAX IV synchrotron and the ELI-ALPS laser centre raised awareness of how such facilities contribute to the European research landscape, giving an in-depth overview of career opportunities, operations, techniques and biomedical and environmental applications, and closing with practical sessions on applying for beamtime allocation.

Credential ID B6703928. Scores: Reading 200 (grade A, C2); Use of English 201 (grade A, C2); Writing 190 (C1); Listening 193 (C1); Speaking 195 (C1).

Credential ID F751769/2024. Final grade: 5 — Excellent.

Acquired competencies: analysing the context of intervention for a training programme; designing the programme; developing didactic and multimedia resources; planning learning activities; applying techniques of pedagogical interaction and group facilitation; managing diversity in the training context; using and managing collaborative and learning platforms; developing evaluation tools for training and learning outcomes; and assigning and reporting results.

Covered the modelling of quad-rotor drones (configurations, reference frames, block diagrams, dynamics); analysis of each subsystem in Scilab/Xcos, from rotor actuation to the dynamic and kinematic equations linking forces and moments to motion; and control of quad-rotor motion — common control solutions, stabilisation of vertical and angular motion, horizontal guidance, and approximations towards a more realistic simulator.

Covered the foundations of project management; project initiation; project planning; project execution; and Agile project management.

Covered leading teams (developing as a leader; building effective team cultures), designing and managing the organisation, and business and corporate strategy.

Covered why smart executives fail (common mistakes and warning signs); decision-making as a blend of art and science; superbosses — managing talent and leadership; and lessons on wisdom and personal leadership.

Objectives: manage a software project for space and ground applications; understand the significance and procedures of the process; know what ESA expects; identify potential sources of project failure as early as possible; and bridge the system and software domains.

Held 2022-10-08 to 2022-12-05. Objectives: pedagogical preparation of a course; learning objectives and skills; teaching strategies for large classes; introduction to learning assessment; and higher-education pedagogy.

A comprehensive learning experience blending theoretical understanding through a lecture series with hands-on practical training in a capstone project, guided by subject-matter experts. The capstone solidifies the learned skills and fosters close collaboration with leading scientists in the GPM community.

Objectives: effective teaching strategies and the research that supports them; the value of learning through diversity and strategies to incorporate it in the classroom; and how to assess these pedagogical strategies and decide which to implement.

Covered key learning principles such as the role of mental models and the importance of practice and feedback; fundamental elements of course design, including learning objectives and aligned assessment; and teaching strategies for fostering active learning and inclusive classroom environments.

An introduction to Earth observation (EO) for international development assistance and to Space for IDA, ESA's cooperation framework implemented in partnership with international financial institutions — a comprehensive overview of the impact of EO across sustainable-development contexts for decision-makers, policy-makers, educators and communicators.

Held 2018-10-10 to 2018-11-07. Comprehensive training on patent basics, intellectual-property rights and the patenting process, including European Patent Office procedures, with sessions on novelty/inventiveness, claims, patent searching (Espacenet), developing an IP strategy and commercialising research results — delivered by Pedro Borges (EPO), Tiago Leitão, Luís Ferreira and André Fernandes.

Covered Six Sigma principles; tools for Define and Measure, Analyse, and Improve and Control; Six Sigma and the organisation (advanced); and the advanced Define/Measure, Analyse, and Improve/Control phases.

Web-accessibility auditing (Bronze and Silver seals).

A 24-hour contest of engineering applied to automation, instrumentation and control (2019-03-16 to 2019-03-18). With my team, I developed a Rube Goldberg machine whose purpose was to hoist a flag; we scored 18 out of 20, placing among the ten podium teams out of forty.

A five-hour training delivered jointly by the UT Austin Portugal Program, INESC TEC (through its Centre for Robotics and Autonomous Systems), the International Institute for Astronautical Sciences — Space for All Nations, the Porto School of Engineering (ISEP), the Faculty of Sciences of the University of Porto, the Portuguese Space Agency (PT Space) and the Luso-American Development Foundation (FLAD).

Tools and approaches for teaching and assessing core skills in the classroom.

Held 2022-02-09 to 2022-06-03. The course develops critical and informed listening across historical moments and artistic expressions; explores musical practice and its social contexts, from classical-concert curatorship to community intervention; examines the mechanics of musical creation (composition, interpretation, production and dissemination); and treats critical involvement with music as personal and interpersonal development.

Satellite remote sensing for identifying and monitoring threats to heritage sites and landscapes.

Critical reflection on digital transformation and strategic institutional responses.

An experiential asynchronous course in which participants advance the UN Sustainable Development Goals, earning a pass in each of the five Open Source Leadership skills assessments and a post-programme reflective assessment: "How am I going to step up as a Global Citizen and advance my Sustainable Development Goal?".

How children learn through play and develop social and collaboration skills.

Held April–May 2020. Topics: China and the Chinese language; Chinese cuisine; Chinese geography and tourist attractions; and the Chinese lifestyle.

A presentation of FEP-2100 — its context and how we created it. Distinguished as the Best Oral Communication in the Engineering area of this edition.

DCE23, the Doctoral Congress in Engineering, was held on 15–16 June 2023 at the Faculty of Engineering of the University of Porto. This hands-on workshop gave participants the fundamental concepts of version control and the features Git offers for code — or any text, including a thesis.

Topics: rsync, diff and patch; an overview of revision-control systems with briefings on RCS and Subversion; configuring Git and setting up GPG for signed commits; hands-on practice with many Git commands; tags; branching and merging; storage areas; a brief look at Git internals; and version-control etiquette.

A series of six thematic television documentaries addressing essential technological questions: cryptocurrencies and blockchain, social networks and the public space, artificial intelligence and privacy. I discussed the impact of algorithmic decision-making on the content we consume and the discussions we have.

A one-hour talk delivered twice in May 2023 — on the 4th at the Faculty of Engineering via Porto Space Team, and on the 17th at the Faculty of Sciences via NuCC-FCUP and Hackers at Porto.

Topics: model-driven development; introduction to real-time embedded systems (with emphasis on hard real time); functional, temporal and dependability requirements; execution management; introduction to reliability, availability, maintainability and safety (RAMS); architecture and components in space avionics; and safeguard mechanisms, with emphasis on redundancy.

A four-hour lecture in Spaceway's online and live course "Software & Data Engineering in Space". Topics: model-driven development; real-time modelling, scheduling and RTOS; execution management; reliability, availability, maintainability and safety (RAMS); software development methodologies; architecture and components; safeguard mechanisms; and memory management.

A one-hour talk using the ANTAEUS CubeSat as its main case study. Topics: execution management; RAMS; software development methodologies; architecture and components; electronic components; on-board buses and interfaces; determinism; and safeguard mechanisms.

As a developer of the federated universe, I contributed to the first webinar of this event, in which representatives of the European Commission, the European Data Protection Supervisor and the European Parliament discussed the possibilities of federation and how the European Commission could announce relevant events on the fediverse. Through two webinars and a workshop, NGI Zero and the ActivityPub community showcased to national and European administrations how the decentralised social-networking protocol ActivityPub can help European institutions retake their online presence.

ActivityPub is a decentralised social-networking protocol based on the ActivityStreams 2.0 data format: a client-to-server API for creating, updating and deleting content, and a federated server-to-server API for delivering notifications and content. This Talks@DCC took a small tour through the history of the fediverse, the context in which ActivityPub was introduced, and the internals of its implementation — among other challenges in the software and network engineering of a federated social network — ending with the advantages of this kind of platform and the technical complications of building and maintaining one.

A brief introduction and overview of an initiative started in 2011 that has been gaining popularity. The talk explored the principles and values of privacy, participation and diversity of this vibrant network, contrasting them with the selfish business practices of the non-neutral exchange platforms populating the rest of the Internet.

Co-delivered a hands-on workshop on the fundamentals of operating-system development, following the construction of a small OS from the bootloader through to a working shell. The workshop covered low-level boot and execution concepts, x86 Assembly and C, and practical development and debugging using NASM, QEMU and GDB/GEF.

I presented a summary of the development and results of the Faculty of Sciences' mentoring programme at the first meeting of U.Porto's transversal programme of peer mentoring.

A three-hour workshop about automation science, complex systems, digital electronics, the Internet of Things, and how those relationships enable the making of robots — with a detailed practical component using sensors and actuators to illustrate the concepts.

My internship on parametric human-body models was distinguished as the best of the MCT category by the jury of the Summer@CTM 2022 internship programme.

“GNU social v3 and Unbound Actors” was distinguished as the best oral communication in the Engineering area.

Funding awarded through the EU's Horizon 2020 research and innovation programme (2021-02 to 2022-02) to lead the development of GNU social v3.

Our team ranked best among six in the two-day hackathon closing the Entrepreneurial Skills module.

Kult received IAPMEI's StartUP Voucher full grant (2020-06 to 2021-06) and a Grant for the Web flagship grant (2021-06 to 2021-12).

Research initiation grant supporting the robotics internship at LSTS, FEUP.

Scored 18/20 with my team, placing among the ten podium teams out of forty.

Amazing understanding of general software-engineering principles and of web standards (such as semantic HTML, ARIA, ActivityPub), a great project coordinator and a great writer.

Proactively seeking to gain knowledge in many different areas, has a lot of attention to detail and goes to great lengths to read a lot of material in order to keep himself informed and be able to help others as well. This showed clearly during our time at college, both as a colleague during classes and also as a student representative, as well as in his work on extracurricular projects.

Diogo has an inquisitive mind, with broad interests in control, computation, digital culture, and entrepreneurship. His written work is excellent. He has a very organised mind and the technical foundations to address and solve complex problems. Diogo is bright, intelligent, a team worker, efficient, effective, very pleasant to work with, very serious about research and strongly committed to pursuing research in the interest of society.

We have exchanged opinions on research topics in the fields of physics, complex systems, and computing. I recognise his high capacity for problem analysis, communication, critical thinking, and teamwork.

Diogo entered our first degree in Computer Science at the University of Porto in September 2017. Being one of his professors during the degree, I could watch him show a good knowledge of the field, ability to learn new matters, ability to work with others, initiative and originality, willingness to work towards goals, motivation and seriousness, open-mindedness, and emotional stability and maturity.

Inquisitive, introspective and continuously growing, a true scientist. One of the best software professionals I have ever met.

As a Diogo mentee, I was always guided when tasks turned out to be more difficult and provided with the necessary attention to discuss ideas. Besides, Diogo never gave me solutions, but hints or suggestions of places to look at. Diogo perfectly balanced his interactions with me and, as a result, my Google Summer of Code experience was the richest possible. His passion for the project was positively contagious. It was a pleasure to work with him and I am sure I will keep contributing to GNU social.

I wanna give a shout-out to Diogo, who produces quality code fast. It's really cool to work with him!

Active, persistent and productive.

A brilliant man, in a relationship with his surroundings, constantly seeking the truth. An excellent asset to any company.

Simply amazing. Diogo manages to turn abstract ideas into reality in a simple and effective way.

An open-source toolkit for exploratory literature mapping through citation networks. A Python pipeline turns scholarly metadata into inspectable graphs and browser-ready datasets; a static explorer keeps local files in the browser.

A focused weekly time and task tracker with goals, streaks, manual corrections, a live timer, reports, exports and team workspaces. The current launch has no billing, paywall or trial countdown.

A real-time eyewear try-on built from one TypeScript codebase. MediaPipe landmarks drive frame position and perspective while face-aware occlusion keeps the temple arms behind the head.

My PhD work explores multi-application spatial augmented reality, with C++ as the main implementation language.

Generate a Portuguese-language monthly meal plan and shopping list from adult inputs, a small curated catalogue and Open Food Facts product data.

Compare deposits and cash products with separate terms, crediting frequencies, periodic top-ups, tax assumptions and annualised net returns.

A quick way to check weekly U.Porto canteen menus without repeatedly opening the supplier website. It formats the menu by weekday and provides direct commands for several faculties.

A shared interface for Porto public-transport information. It handles expected passages, route lookup and platform-specific favourites through Telegram, Discord and encrypted Matrix conversations.

A ROS 2 and Gazebo prototype that uses a fixed depth camera above a stage to infer the spatial extent of the action and automatically reposition a differential-drive RGB camera platform.

A configuration-driven PyTorch toolkit for training, evaluating and running image classifiers on arbitrary folder datasets, with explicit splits, augmentation, checkpoints and reproducibility metadata.

A design for linking Group or Organization actors so communities could cooperate across independent servers. I withdrew it when I could not give it the sustained time needed.

Corrected request-URI validation logging.

A proposal co-authored with Phablulo Joel exploring Web Monetization information in ActivityPub. The discussion later informed the newer Payment Links draft.

Proposed configurable permissions and stricter defaults in HttpFoundation file handling.

Adds Cortex-A72 architecture support; it is not presented as accepted work.

Russel! is a Haskell compiler for a small Rust-like language. A separate archive preserves selected coursework and teaching prototypes with their original licences and attribution.

Maintenance of an established PHP library for communicating with XMPP services, preserving the original authors’ attribution and project history.

Simplified digest construction in an IndieWeb reader.

A self-hosted wallpaper community with a hardened PHP upload service, gallery and API, paired with an atomic GNU/Linux client and systemd user timer.

Added and corrected YAP, REPL and coding-guideline resources.

Added SWI-Prolog support to the editor integration.

Added list-data deletion and a configurable free callback.

Plugins and supporting components around federation, browser integration and metadata discovery.

A dependency-light POSIX-shell command that downloads a Microsoft Spotlight landscape image, validates it and atomically updates a configured wallpaper file.

An interactive browser-and-ESP8266 exercise for learning binary representation through six switches, live sums and optional physical LED feedback. It is still used at the University of Porto.

A playful introduction to coding, robots, algorithms, loops, binary, pixels, networks and password safety. Available in English, Portuguese, Spanish and French.