Freelance Tech Lead Java

GUY MANDINA

Freelance Tech Lead Java for resilient backend, cloud-native and event-driven systems that stay readable in production.

Start a missionView selected work
  • Spring Boot
  • Kafka
  • Kubernetes
  • Platform architecture

from 2009 until today

Latest projects

Critical platforms, production delivery, and architecture work for teams that need calm execution under real constraints.

Tech Lead - 2023-2025

BNP Paribas - Credit Platform

  • Java
  • Spring Boot
  • Kafka
  • Kubernetes

via Hackages - 2022

BIL - Mobile Banking

  • React Native
  • TypeScript
  • Mobile

via Hackages - 2020-2021

ING - Client Portal

  • Java
  • Spring Boot
  • Angular
  • Docker

via Wemanity - 2017-2019

EDF - eDMA Big Data

  • Spark
  • Kafka
  • Scala
  • Big Data

via Xebia - 2016-2017

Fortuneo - Ready Platform

  • Node.js
  • AWS
  • Angular
  • CI/CD

Trusted by

BNP Paribas
BIL
ING
EDF
Fortuneo

I do not just write code. I engineer systems.

Story

Senior backend leadership without the noise.

With 15+ years in software engineering, I've built and led backend systems for major banks, energy companies, and fintech players across France and Europe.

Based near Paris, I work as a freelance Tech Lead Java, specializing in event-driven architectures, distributed systems, and cloud-native platforms.

I partner with both consulting firms and end clients - from BNP Paribas to ING, from EDF to Fortuneo - bringing structure, reliability, and momentum to complex technical challenges.

My mission: designing robust, scalable backends that handle real-world pressure - high throughput, zero downtime, and clean architecture that teams actually enjoy working with.

What a solid mission looks like.

Process

Architecture first. Delivery always production-minded.

  1. 01

    Clear requirements, shared vision

  2. 02

    Architecture first, code second

  3. 03

    Production-ready from day one

  4. 04

    Tests & CI/CD are non-negotiable

  5. 05

    Clean code beats clever code

Connect

Need a technical lead for a resilient backend platform?

I work best with teams that need clear architecture, reliable delivery and a senior partner who can make complexity readable.

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