Xavier MaximinSoftware Engineer
ENFR

Android Leadership

Join the codebase. Understand it. Start delivering.

Senior Android Engineer in Lyon, open to Paris and international teams. Android Tech Lead or Architect for existing codebases and production delivery.

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.

Make progress without losing control of the system.

I start by tracing the feature, understanding the architecture and build pipeline, and agreeing on the first useful change with the team.

At Skiddle, I owned Android delivery with limited supervision. At BBOXX, I became the main Android engineer. At Free / Iliad, I took over as Android lead, reviewed changes and shipped releases.

What I can take ownership of

  • Kotlin, Jetpack Compose, state management, Coroutines / Flow
  • Modularisation, MVVM / MVI and Clean Architecture
  • Legacy Java/Kotlin modernisation and offline-first architecture
  • Performance, production debugging and API integration
  • Testing strategy, CI/CD and release engineering
  • Code review, technical decisions, documentation and mentoring
  • Collaboration with Product, QA, Backend and iOS

Problems I can help you solve.

You have an Android codebase that needs a senior engineer.

Your team needs help making architecture decisions.

You need to modernise legacy Java/Kotlin incrementally.

You need someone to investigate difficult production bugs.

A mobile feature crosses Android, backend APIs and business logic.

You need an engineer who can own delivery inside your existing team.

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.

Mature systems & debugging

Bedrock

Jul 2025 — Apr 2026

Solving production problems in a large existing platform.

Incremental fixes inside an approximately ten-year-old Android codebase, across phones, Android TV and Fire TV.

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