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Arnaud LasserreAL

Arnaud Lasserre

Tech Lead Fullstack Java | Angular | LLM

€500/day
Toulouse, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Arnaud

10 years delivering Java/Angular in contracting at CNAM, Airbus, EDF, Thales. 4 months freelancing integrating the Anthropic SDK into my own production SaaS.

Certified Tech Lead + Scrum Master PSM I. Legacy codebase takeover, architecture, technical leadership, team training.

— Personal SaaS (architecture → production) —

▸ Entrevia (entrevia.dev) — technical interview preparation. Anthropic SDK (Claude Haiku 4.5), batch scoring, junior/mid/senior adaptive prompt engineering, cost safeguards. 100+ stacks. Next.js 16, tRPC, Drizzle, Stripe.

▸ Normance — B2B REST webservice generating CSR/CSRD certificates for refurbished products (ADEME calculation, multi-tenant). Presented to the European n°2 in refurbishment. Node.js, Fastify, BullMQ, 36 Jest tests.

▸ Legacode — multi-language code audit SaaS. Differentiation: no AI processes client code (GDPR, NDA, regulated sectors). SonarQube + Semgrep + OWASP + Trivy, sovereign OVH infrastructure. Java 25, Spring Boot.

▸ Knido & Knido Mobile — web + mobile textile marketplace, shared tRPC API, Stripe Connect, EAS Build.

▸ COBOL → Java 25 Migration via AST analyzer, banking sector.

— AI Workflow —

Systematic Claude Code (pair-programming, tests, refactoring), CLAUDE.md / AGENTS.md conventions. Hardened self-hosted VPS with daily Claude agent for security audits.

— Major Clients —

CNAM / Mon Espace Santé: TL + SM, team of 15, national secure messaging.
Dataraxys / Nuamouv: Java 11 → 25 migration of the entire fleet, ticketing system delivered for 4 clients.
Airbus: TL for fleet planning client software, English-speaking teams.
EDF: Shared libraries adopted by EDF teams.

— Stack —

Java 8→25, Spring Boot, Next.js 16, Angular, TypeScript, Node.js, Kotlin/Ktor · Anthropic SDK, OpenAI, RAG · PostgreSQL, MongoDB, Kafka · Docker, Kubernetes, Jenkins, Traefik

Long-term missions, Toulouse or full remote. Available from Jan 2026.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Toulouse (up to 50km), Paris (up to 50km), Bordeaux (up to 50km), Lyon (up to 50km), Marseille (up to 50km)

Experience

  • Lasserre Consulting
    Tech Lead IA & Fullstack | LLM | Java | Next.js — Freelancer
    SOFTWARE PUBLISHING
    January 2026 - Today (5 months)
    Toulouse, France
    **Objective**:

    Launch my freelance Tech Lead activity with operational AI expertise, designing and delivering complete SaaS solutions autonomously and industrializing a reproducible Claude Code workflow.

    **Achievements**:

    Entrevia(entrevia.dev) — Technical interview preparation SaaS. LLM integration in production via Anthropic SDK (Claude Haiku 4.5): adaptive prompt engineering junior/mid/senior, batch scoring, structured extraction of stacks from PDF offers, cost safeguards. 100+ stacks. Auth.js v5 (OAuth + magic link), Stripe webhooks, offline-first PWA.

    Normance— B2B REST Webservice automatically generating CSR/CSRD certificates for refurbished products. Multi-tenant, rate limiting by plan, signed webhooks, PDF generation (Puppeteer + QR code), batch endpoints. Presented to the European n°2 in refurbishment. 36 Jest tests.

    Legacode— Multi-language code audit SaaS with "no AI processes client code" differentiation (GDPR, NDA, regulated sectors). Orchestration SonarQube + Semgrep + OWASP + Trivy, PDF expert report, self-hosted MinIO, certified SHA-256 deletion.

    Knido & Knido Mobile— Community textile marketplace, web + mobile on shared tRPC API, Stripe Connect, EAS build iOS/Android.

    COBOL → Java 25 Migration— AST analyzer, Angular HTML report, banking sector.

    Hardened self-hosted VPS infrastructure hosting all projects. Daily Claude agent for security audits (logs, CVEs, configs, alerting).

    **Stack**:
    Next.js 16, React, TypeScript, tRPC, Drizzle, PostgreSQL, Java 25, Spring Boot, Kotlin/Ktor, Node.js, Fastify, Anthropic SDK, OpenAI, Stripe, MinIO, Docker, Kubernetes, Jenkins, Traefik, EAS Build

    **Result**: 8 SaaS delivered autonomously, 5 in production, 1 with LLM in production, 1 commercially validated by a major European player.
    LLM RAG Generative Artificial Intelligence Java Fullstack
  • Dataraxys / Nuamouv
    Senior Developer
    TRANSPORTATION
    April 2025 - January 2026 (9 months)
    L'Isle-Jourdain, France
    Context
    Returned as an employee at Dataraxys. Took charge of the technical scope for Nuamouv clients (urban transport) and the parent company Prêt à Partir. Development, maintenance, and quality control.

    Achievements
    → Complete ticketing system delivered for 4 clients: sales funnel, real-time tracking, QR codes, tracking profile
    → Java 11 → 25 migration across the entire production application fleet
    → Email signature tool deployed for +1,000 group employees
    → Skill development of the team's Fullstack Tech Lead
    → Tracking of deliveries across 3 environments: Dev / Staging / Pre-production

    Stack
    Java / Jakarta EE · VueJS · Vaadin · Portainer (Docker) · Nginx · GitLab
    Java Jakarta EE Vue.js Vaadin Portainer
  • Alliance4U
    Tech Lead Fullstack & Scrum Master Consultant
    DIGITAL AND IT
    June 2019 - April 2025 (5 years and 10 months)
    Toulouse, France
    Context
    7 contracting missions for major clients. Progression from Developer to Tech Lead, double role of TL + Scrum Master on one of the missions. Sectors: energy, aeronautics, public health, retail, agriculture, transport.

    Missions

    ▸ Dataraxys/Nuamouv · Tech Lead Fullstack · March 2024 → April 2025
    Took over Nuamouv's technical scope, leadership, continuous delivery.
    Stack: Java/Jakarta EE · VueJS · Docker · GitLab

    ▸ Pharmacies Lafayette · Tech Lead Fullstack · July 2023 → February 2024
    Took over a non-functional project, full audit, restoration, and deliveries.
    Stack: .NET · AngularJS · PostgreSQL

    ▸ CNAM / Mon Espace Santé · Tech Lead + Scrum Master · August 2022 → August 2023
    National secure messaging, team of 15, Scrum ceremonies, Sonar quality.
    Stack: Java · Spring · VueJS · Angular · Kafka · PostgreSQL · Jenkins

    ▸ Airbus · Tech Lead Fullstack · January 2022 → August 2022
    Fleet planning client software, coordination of English-speaking teams.
    Stack: Java · Spring · Swing · PostgreSQL

    ▸ Ministry of Agriculture · Fullstack Developer · March 2021 → December 2021
    Management site for professional and recreational fishing.
    Stack: PHP · Symfony

    ▸ Thales Alenia Space · Fullstack Developer · February 2020 → April 2020
    Satellite control application, rewriting integration tests.
    Stack: Java · Angular

    ▸ EDF · Fullstack Developer · June 2019 → January 2020
    Marketplace application supervision, shared libraries and training.
    Stack: Java · VueJS · Angular · Kafka · Docker · OpenShift
    Java Angular Vue.js Docker Kubernetes

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Education

  • DevOps Foundation Certification
    Certification DevOps Foundation
  • Software Engineering Manager
    Responsable en Ingénierie des Logiciels

Skill set

Categories