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Massimo MarcellinMM

Massimo Marcellin

FullStack Engineer | Angular C++ FastAPI

€350/day
Lille, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Massimo

I help teams and founders transform an idea into a reliable web application, or to overhaul a technical foundation that needs to last. My job is not to pile on features, but to build applications that truly work: clear, maintainable, and capable of evolving without pain. I work full-stack, with Angular on the front-end and solid backend APIs, adapting the stack and level of rigor to the project context. I currently work at Dassault Aviation, on an Angular + C++ (oatpp) stack, in an industrial environment where: • every technical decision matters, • quality is non-negotiable, • code must be robust, readable, and durable. This experience has given me an engineering discipline that I then apply to my freelance projects, with more agile stacks like Angular + FastAPI, perfectly suited for web products and SaaS. Specifically, I step in when it's time to: • create a clean MVP without introducing technical debt from the start, • structure a clear and scalable backend, • build a coherent full-stack application, • take over an existing project and finally make it maintainable. I take the time to understand the business need, then I propose a simple, justified, and adapted solution, without over-engineering. Frontend • Angular (SPA / SSR) • Structured, readable, high-performance interfaces Backend • FastAPI for product APIs, SaaS, business applications • C++ / oatpp for high-constraint environments • Clear REST APIs, mastered business logic Approach • Modular architecture • Separation of concerns • Readable code over “brilliant” code
  • French

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Dassault Aviation
    Software Engineer
    DEFENSE AND MILITARY
    September 2025 - Today (9 months)
    Istres, France
    I work at Dassault Aviation on software engineering topics in a high-constraint industrial environment. I work on an Angular stack for the front-end and C++ (oatpp) for the backend, at the heart of applications where robustness, traceability, and code quality are essential. Development cycles are long, with high demands in terms of architecture, maintainability, and software responsibility. This context has provided me with a solid engineering discipline: • designing clear and sustainable architectures, • writing readable and reliable code, • anticipating long-term impacts rather than seeking quick gains. This industrial rigor directly influences my development practice, including on more agile or product-oriented projects.
    Angular C++ Docker Postgre PostgreSQL
  • Armée de Terre
    Special Operations
    DEFENSE AND MILITARY
    July 2016 - June 2025 (8 years and 11 months)
    Pau, France
    I worked within the Special Forces, in a telecommunications and systems role, at the core of information transmission and exploitation capabilities. My work focused on: • setting up and operating communication networks in constrained environments, • developing and adapting internal software tools, when off-the-shelf solutions did not meet operational needs, • optimizing telecom chains where reliability, latency, and robustness were critical. In this context, software development was not a convenience but an operational necessity: we designed our own telecommunications applications and scripts to meet very specific constraints, often autonomously, with limited resources and high demands. This experience taught me to: • think in systems, not features, • prioritize reliability and simplicity over unnecessary sophistication, • develop solutions that must work no matter what.
    C++ IT Architecture Virtual Private Network (VPN) AngularJS System Administration

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Education

  • Engineering Degree (French MSc)
    ISEN Lille
    2028
    Diplôme d'ingénieur (French MSc)

Skill set

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