Freelancer profile translated to English.
Back to original languageAbout Nicolas
I am a fullstack developer with over 7 years of experience. I master Java, React and the entire modern stack (Spring Boot, AWS, Docker, Kubernetes). I have worked on various projects from subscription systems for SNCF, banking applications, SaaS solutions and I enjoy solving concrete problems.
What I bring: a good technical understanding, the ability to adapt quickly and the desire to deliver maintainable code. Whether it's architecting a solution from scratch, modernizing an existing system or joining a team, I am comfortable and pragmatic.
Spanish
Conversational
English
Native or bilingual
French
Native or bilingual
Can work on-site
Nantes (up to 50km)
Experience
- SNCF Connect&TechFULLSTACK DEVELOPERMarch 2022 - April 2025 (3 years and 1 month)• Needs analysis and technical scoping of new features• White-label frontend development for end customers and regional centers• Creation of API Gateway/BFF for service orchestration• Data migration from Oracle to PostgreSQL• Implementation of authentication and customer account management• Complete subscription management (subscription, payments, direct debits)• GDPR compliance (automatic deletion, request management)• Full subscription lifecycle (suspension, resumption, cancellation)• Automated tests, CI/CD and production monitoring Technical stack: JavaScript, TypeScript, React.js, Redux, Material-UI, Oracle, PostgreSQL, DynamoDB, AWS (Lambda, Step Functions, CDK), Jest, Cypress, Datadog
- AIMCIAFULLSTACK CONSULTANTSeptember 2021 - Today (4 years and 9 months)Main project: React/SpringBoot management software for outdoor hospitality, support and training of teams for the front end in react.js, dockerization of the applicationSecondary project: Project bootstrap withA front end in react.js, typescript, react-query, creation of the first components and basic logic.A back end in Java 17 SpringBoot, architecture setup, creation of basic features for authentication and first API. Setup of automated integration tests with testcontainers.Documentation and team support and training on the stack and various technical choices.
- Compte NickelFULLSTACK CONSULTANTDecember 2020 - March 2022 (1 year and 3 months)• Java Spring Boot Backend: Customer area microservices, authentication/OTP, Mail/SMS sending, KYC, passive biometrics• React Native Frontend: authentication, balance/transaction display, beneficiary management, personal information modification• DevOps: Grafana Dashboards, log standardization, GitLab-CI pipelines Technical stack: Java, Spring Boot, React Native, GitLab-CI, Grafana, Microservices
Reviews
Cyril
EGNX
Reviewed on 4/3/2021
Very professional and competent, Nicolas performed an excellent quality code review. Nicolas has excellent communication skills and very good expertise in Vue.js / Javascript, Web technologies and front and back end application patterns. Nicolas is a very good FullStack developer.
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Education
- Master's degree in Design and DevelopmentIMIE2018