Freelancer profile translated to English.

Description

Lead Developer**, with **10 yearsof experience in business applications within large enterprise environments.

Specialties:

- Java / Spring Bootfor the backend

- Angular / TypeScriptfor the frontend

I am involved in the entire lifecycle:

**- Requirements gathering and scoping**,

**- Technical design**,

**- Backend and frontend development**,

**- Containerization**,

**- CI/CD**,

- Tests(unit and integration),

-Production deployment

Technical lead on two of my last three assignments:

**- Developer mentoring**,

**- Code reviews**,

**- Design**,

- Obsolescence management

I am comfortable in demanding environments requiring **security**, regulatory compliance, and user focus, typically found in **banking**, **transportation**, **public sector**, **energy**, or **manufacturing industries**.

In practice, a client who integrates me into their team gains anautonomous**, end-to-end developer, capable of adhering to team standards and **quickly scaling upon existing IT systems.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Nantes (up to 10km)

OPEN
Fullstack Technical Lead Java & Angular
DIGITAL AND IT
February 2026 - Today (6 months)
Nantes, France
Technical lead on projects for the Ministry of the Interior.
My main responsibilities included:
- Mentoring and supporting a team of 5 developers
- Ensuring the quality of deliverables through code reviews and participation in deliverable reviews with the technical director
- Technical developments related to development environments or infrastructure (PostgreSQL version upgrades, Docker image construction)
- Development of dynamic web interfaces with Angular
- Development of REST APIs with Spring and Java
- Analysis, diagnosis, and bug fixing
Java Spring Boot Angular PostgreSQL Docker Gitlab CI/CD
Kereis
Software Development Engineer
BANKING AND INSURANCE
March 2025 - January 2026 (10 months)
Nantes, France
As part of this assignment, I contributed to the integration of the funeral activity into Kereis's contract management software, a particularly sensitive and demanding functional area.

My responsibilities covered the entire development cycle:

*Functional analysis of needswith business teams to translate complex challenges into adapted technical solutions.

*Design and developmentof new features with the Grails framework, ensuring robustness and scalability.

*Level 1 supportfor advisors, to ensure smooth operational monitoring and continuous improvement of the tool.

This assignment allowed me to demonstrate:

Myautonomyand my ability to quickly master a new functional scope.
My role as a **fullstack developer**, combining a global vision with technical expertise.
Myease of skill acquisitionin a complex business domain.
My **comfort in teamwork**, ensuring an effective link between advisors, business stakeholders, and the technical team.
Grails PostgreSQL Gitlab Jenkins Java
eSNCF Solutions
Lead Fullstack Developer
TRANSPORTATION
August 2023 - February 2025 (1 year and 6 months)
Nantes, France
Aslead developeron 4 strategic projects, I was responsible for establishing the technical foundation of applications and supporting development teams.

My main contributions:

Technical leadershipof a team of developers andskill developmentfor junior profiles.

Technical point of contacton several projects, in direct liaison with project managers and pre-sales (technical scoping and high-level estimation).

Fullstack design and development:
**Backend**: Robust REST APIs with Spring Boot.
**Frontend**: Dynamic interfaces with Angular.
Implementation of modern infrastructures:

*Continuous Integrationwith **Jenkins**.

*Containerizationof Spring/Angular applications usingDockerand orchestration with **Kubernetes**.
AutomatedAWS cloud deploymentwith **Terraform**.

This assignment reinforced my role as a **technical leader**, my ability to work autonomously while collaborating in a team, and my comfort in managing projects from scope definition to operational deployment.
Spring Boot Angular Docker PostgreSQL MongoDB

Check out Joachim's experience

Normann

e SNCF Nantes-AC

Reviewed on 2/28/2025

Joachim played a key role as a lead Java/Angular developer for over a year and a half. His expertise in Spring and Angular frameworks was a major asset in building our APIs and dynamic web interfaces. Pleasant and with excellent interpersonal skills, he creates a climate of trust with his colleagues and the users he supports. His technical competence, combined with a clear, precise, and insightful approach, allows him to be both effective and relevant in his interventions. Reliable and committed, Joachim is someone you can count on. I recommend him without hesitation.

David Billaud and 2 other people have recommended Joachim

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Baptiste Duhen

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Audrey Champion

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Signup to reveal

Cloud Computing Engineer
CyTech (Ex EISTI)
2016

Joachim D.

Lead Fullstack Developer - Java / Spring / Angular

About Joachim

Experience

Reviews

5.0

Quality

5.0

Deadline

5.0

Communication

5.0

Normann

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