I build backend and full-stack software with a strong focus on Java, Spring Boot, relational databases, distributed systems and production-oriented architecture.

My experience includes professional client delivery, a software engineering internship involving local AI models and API integration, independent product development, and academic systems built around concurrency, networking, persistence and fault tolerance.

I am particularly interested in backend engineering, distributed systems, software architecture and building systems that can be clearly justified from real requirements.

Coimbra, Portugal · Mar 2026 - Aug 2026

• Developed a data-redaction pipeline using locally trained models, Python and PyTorch, including dataset preparation and comparative evaluation.
• Built a FastAPI REST backend and React/Vite interface to integrate and expose model predictions.
• Evaluated model accuracy, latency, maintainability and operational trade-offs.
• Worked in an agile environment, documenting technical decisions and delivering iterative improvements.

Coimbra, Portugal · Jun 2025 - Present

• Deliver websites and web applications from requirements gathering through implementation, deployment and maintenance.
• Work directly with clients on scope, content, technical decisions and delivery.
• Build production-oriented solutions across static websites, commercial platforms, lead-generation flows and payment-enabled web applications.

These are real client projects. Their production source repositories remain private because they contain client code, assets or implementation details.

Production website for a martial arts academy in Coimbra, designed as a fast multilingual public experience with reusable content and strong SEO foundations.

• Eight-language content system with build-time translation validation
• Responsive public website for academy information, modalities and contact
• Structured metadata, JSON-LD, sitemap and robots configuration

Astro 6 · JavaScript · i18n · SEO

Status: Production · Private source

Commercial and marketing platform for a personal brand, mentorship and digital/physical product presentation, with conversion-focused pages and lead capture.

• Next.js App Router frontend with reusable domain components and typed content
• Product catalogue, product-detail flows, waitlist/contact capture and SEO
• Cloudflare Workers deployment target through OpenNext

Next.js 15 · React 19 · TypeScript · Tailwind CSS · Cloudflare Workers

Status: Private client project

Client platform for English-learning courses, ebooks and digital sales.

• Static content experience built with Eleventy
• Server-side flows using Node.js and Express
• Mercado Pago and Pix payment integration

Eleventy · Node.js · Express · Nunjucks · Mercado Pago

Status: Private client project

Independent publishing platform with a public content experience and separate administration workflow.

• Spring Boot API with relational persistence
• Astro public website and React administration interface
• Production infrastructure using Azure and Cloudflare

Java · Spring Boot · PostgreSQL · Astro · React · Azure · Cloudflare

Private SaaS-oriented scheduling platform for service businesses, designed around organisation-level tenant isolation and production-oriented security.

• Multi-tenant domain and organisation boundaries
• Booking and scheduling workflows
• Database migrations and integration testing

Java · Spring Boot · PostgreSQL · React · Flyway · Testcontainers

Instituto Superior de Engenharia de Coimbra (ISEC)
2022 - 2026 · Graduated July 2026
Specialisation in Application Development

Coursework covered programming, distributed systems, networks, databases, operating systems and software engineering.

My academic work is organised separately under davigama-academic, keeping university engineering projects clearly separated from professional and independent work.

Fault-tolerant distributed quiz system with teacher/student clients, service discovery, primary-backup replication, heartbeats, automatic failover and session recovery.

Java · JavaFX · TCP · UDP · Multicast · SQLite

Multi-application multimedia marketplace with a REST API, public frontend, internal back office and MAUI Hybrid client, including authentication, role-based access and commerce workflows.

C# · ASP.NET Core · Blazor · Entity Framework Core · SQL Server · JWT

Local topic-based messaging platform with a central manager and independent clients using POSIX IPC, concurrent delivery and persistent messages.

C · POSIX Named Pipes · pthreads · select() · Signals

Multi-process word game with human clients, autonomous bots and a native monitoring panel using Win32 IPC and synchronization primitives.

C · Win32 API · Named Pipes · Shared Memory · Threads

Desktop chess application covering legal move validation, check/checkmate, castling, promotion, persistence, undo/redo and multiple design patterns.

Java · JavaFX · Maven · JUnit · MVC

• Backend architecture and REST API design
• Authentication and authorization
• Multi-tenancy and relational modelling
• Transactional consistency
• Real-time and asynchronous communication
• Testing and CI/CD
• Deployment and production security
• Distributed-system fundamentals

Selected public repositories are available across this profile and the davigama-academic organisation. Private professional work is represented here through concise case studies while client source code remains private.

Reach me through LinkedIn or email.