Hey there! I'm a freelance Tech Lead Java, building resilient backend & event-driven systems that scale.

GUY MANDINA

from 2016 'til today

MY LATEST MISSIONS

BNP Paribas — Credit Platform

BNP Paribas — Credit Platform

Java, Spring Boot, Kafka, Kubernetes
Tech Lead — 2023-2025
BIL — Mobile Banking

BIL — Mobile Banking

React Native, TypeScript, Mobile
via Hackages — 2022
ING — Client Portal

ING — Client Portal

Java, Spring Boot, Angular, Docker
via Hackages — 2020-2021
EDF — eDMA Big Data

EDF — eDMA Big Data

Spark, Kafka, Scala, Big Data
via Wemanity — 2017-2019
Fortuneo — Ready Platform

Fortuneo — Ready Platform

Node.js, AWS, Angular, CI/CD
via Xebia — 2016-2017
Event-Driven Architecture

Event-Driven Architecture

Kafka, Spring Cloud Stream, CQRS
Cloud & Container Infra

Cloud & Container Infra

Kubernetes, Docker, Helm, CI/CD
API Platform Design

API Platform Design

REST, OpenAPI, Spring Boot, Security
Real-Time Data Pipelines

Real-Time Data Pipelines

Kafka Streams, Spark, Monitoring
Microservices Migration

Microservices Migration

Domain-Driven Design, Spring Cloud, Resilience

More case studies coming soon,
stay tuned 😎

They trusted me

Fortuneo
EDF
ING
BIL
BNP Paribas
Fortuneo
EDF
ING
BIL
BNP Paribas
2009now

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.

Backend craft moodboard
Code with purpose
Event-driven systems composition
Events that stay readable
API design board
Interfaces with backbone
Release and delivery visual
Release without drama

Core stack I keep close

Guy Mandina

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.

42 TERMINALS

NOT SURE WHICH ONE IS RUNNING THE RIGHT POD

Backend engineering

is my passion

1

Clear requirements, shared vision

2

Architecture first, code second

3

Production-ready from day one

4

Tests & CI/CD are non-negotiable

5

Clean code beats clever code

Tap this 'tiny' button to
kickstart your next backend =)

Connect