Xavier MaximinSoftware Engineer
ENFR
Available immediately

Senior Software Engineer

Build faster with
AI-assisted development.
Lead Android projects
with confidence.

Android · Mobile · Web · AI-assisted Development

I help companies build and improve mobile and web products quickly, and take technical ownership of Android architecture and delivery.

15 years building production software8+ years primarily on Android5 years Android in London
Discuss a project ↗View experience →Download CV

01 / Build your product

From idea or design
to working software.

I can help turn an idea, design or existing product into a working mobile or web application using modern AI-assisted engineering.

Android · Mobile · Web · APIs / backend integration
Figma → implementation · Prototype → production
AI-assisted development · Testing · Deployment

Build a product with me →

02 / Lead your Android project

Technical ownership.
Reliable delivery.

I can join an existing Android team as a Senior Engineer, Tech Lead or Architect and take ownership of architecture, technical decisions and delivery.

Kotlin · Jetpack Compose · Architecture
Legacy modernisation · Debugging · Performance
Testing · CI/CD · Code review · Mentoring

Strengthen your Android team →

Ready to contribute

Productive in existing
production environments.

01

Existing codebases

Understand unfamiliar architecture, identify technical risk and work safely in mature systems. Keep what works; modernise incrementally.

02

Production debugging

Reproduce difficult bugs. Inspect logs, state, APIs and lifecycle behaviour. Isolate regressions and validate safe fixes.

03

Feature ownership

Clarify requirements, design, implement, test and release. Follow production behaviour and address what comes next.

04

Technical leadership

Make architecture decisions, explain trade-offs, review code, mentor engineers and document decisions with Product, QA and Backend.

Selected proof

Real products. Real responsibility.

All case studies →
AI-assisted product delivery

Auchan Côte d’Ivoire

2026 · Freelance

From Figma to production, beyond my core stack.

An institutional website delivered across frontend, Ruby on Rails, PostgreSQL and production deployment, using Claude Code and MCP.

Independent Android delivery

Skiddle

Oct 2020 — Aug 2021

Trusted to own Android delivery with limited supervision.

Payments, authentication and production releases, working directly with Product, the CEO, Backend and iOS.

Long-term product ownership

BBOXX

2017 — 2019

Evolving a field application around real working conditions.

Java to Kotlin, SQLite to Room and offline-first architecture for teams working across African markets.

Also: mature Android systems at Bedrock, international consumer applications at WBD / Eurosport, and native cryptographic integration at HENSOLDT.

AI-assisted engineering

Faster implementation.
Engineering judgement stays.

I use AI as an engineering accelerator, not as a substitute for engineering judgement.

See the Auchan delivery →

I use Claude Code, MCP, Figma MCP and coding agents to explore codebases, turn designs into code, implement features, generate tests, investigate bugs and document decisions.

  • Generated code is reviewed.
  • Tests are required and outputs are validated.
  • Architecture and production responsibility stay with me.
  • AI suggestions can be changed or rejected.
Available immediately

What are you
working on?

A product to build. An Android team to strengthen.
Let’s talk about what you need to ship.

Discuss a project ↗LinkedIn ↗

Available immediately

Permanent / CDI · Freelance · Contract

Based in Lyon. Open to

Lyon · Paris · London · Luxembourg · Switzerland
Remote France · Remote Europe where legally possible

French & English · International team experience