Senior Software Engineer based in Paris 🇫🇷
I design and build robust backend systems, with a strong focus on clean architecture, scalability, and developer experience.

A good developer doesn’t make themselves indispensable. They make the team autonomous.

• 🧱 Design microservices architectures (hexagonal / clean architecture)
• ⚙️ Build backend APIs with strong domain modeling
• 🤖 Work on AI & LLM integrations (API unification, DTO standardization)
• 🧪 Advocate for testing, maintainability, and code quality
• ☁️ Deploy and operate services in production environments

Backend

• Java / Kotlin
• Spring Boot, Quarkus
• REST APIs, event-driven systems

Architecture & Quality

• Hexagonal Architecture
• Domain-Driven Design (DDD)
• Testing strategies (unit, integration)

DevOps & Infra

• Docker, CI/CD
• Linux
• Observability & logging

AI / LLM

• OpenAI, Gemini, Mistral, Claude
• API abstraction & provider-agnostic models

🔹 UpKeep – Open-Source Fund Allocation Platform
UpKeep helps companies sustainably fund the open-source maintainers they rely on, with a structured voting and allocation system based on actual usage and risk.

• Bridges the gap between economic value and maintainer sustainability
• Supports maintainers of critical open-source libraries through transparent funding
• Enables companies to justify funding decisions with data-driven allocation

Focus: open-source sustainability, funding models, responsible engineering

🔹 Serenia – Conversational AI Chat App
Serenia is an AI-powered chat application designed to offer a natural, friendly, and sometimes sarcastic conversational experience.

• Adopts the personality of a close friend rather than a formal assistant
• Messages are short (max 180 characters), casual, and engaging
• Focus on human-like interaction and realistic chat experience> Focus: interoperability & maintainability

Focus: AI, conversational UX, personality-driven design

🔹 EcoCode Challenge – Sustainable Coding Initiative
A technical challenge promoting efficient and environmentally responsible code.

• Optimized for performance and energy efficiency
• Highlights the impact of technical choices on resource consumption
• Encourages clean design with environmental awareness

Focus: green IT, efficiency, responsible engineering

(See pinned repositories below 👇)

• Clean, readable, and boring code 😄
• Long-term maintainability over short-term hacks
• Sharing knowledge and improving developer workflows
• Building systems that scale technically and humanly

• 💼 LinkedIn: https://www.linkedin.com/in/tom-walker-621b8511a/
• 🧑‍💻 GitHub: https://github.com/LofoWalker

⭐️ If you like clean architecture, backend craftsmanship, or AI integration topics, feel free to explore my repositories!