The System \& the Team
The IT system is a fast-evolving SaaS platform designed for both internal and external users. Ongoing and upcoming developments include the delivery of new user-oriented features as well as a major evolution of the technical infrastructure, with a strong focus on scalability, performance, security, and cloud-native best practices.
The development team is currently composed of two confirmed developers. The Senior Developer will play a key role in structuring and leading the technical developments of the company, while mentoring and supporting the existing team. External senior experts may also contribute on specific topics.
Key Responsibilities
As a Senior Full-Stack Developer, you will have both hands-on development and technical leadership responsibilities:
Product \& Architecture
Actively contribute to defining and maintaining the product and technical roadmap
Participate in requirement gathering and clarification with internal and external users (including customer workshops when required)
Challenge functional requirements and propose robust technical solutions
Design and validate application architecture and technical choices
Development \& Delivery
Write high-quality, scalable, and maintainable code
Translate functional specifications into detailed technical specifications
Lead the implementation of complex features and core components
Oversee and coordinate technical projects across the platform
Ensure application reliability, performance, security, and scalability
Maintain and improve existing applications and services
Technical Leadership \& Mentoring
Provide technical leadership across all company developments
Supervise, review, and guide the work of the two confirmed developers
Define and promote best practices (coding standards, architecture, testing, CI/CD)
Perform code reviews and ensure overall code quality
Support team members’ technical growth and knowledge sharing
Technologies \& EnvironmentBack-end / Front-end
Languages: Java, TypeScript
Frameworks \& Libraries Play Framework, ReactJS, Next.js
Databases
Relational databases: MySQL, PostgreSQL
ORM: DrizzleORM
Geospatial: PostGIS
Infrastructure \& Cloud
AWS (ECS, Lambda)
Infrastructure as Code: Terraform
Tools
Bitbucket
Jira
Profile
Position: Senior Full-Stack Developer
Experience: 6+ years of professional experience in software development
Technical expertise:
Strong expertise in back-end architectures
Solid front-end experience with ReactJS / Next.js
Strong SQL and relational database skills
Proven experience with AWS cloud environments
Ability to design and evolve scalable SaaS architectures
Leadership skills:
Experience in technical leadership or mentoring roles
Ability to guide, review, and structure the work of other developers
Location: Paris – partial on-site presence required
Languages: Fluent in French and English
Type d'emploi : Temps plein, CDI
Rémunération : 45 000,00€ à 70 000,00€ par an
Lieu du poste : Télétravail hybride (75002 Paris)