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# Full-stack Developer

- **Company:** ADOMIK
- **Location:** Paris, France (Remote available)
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Web Interfaces, JavaScript (Programming Language), Multitier Architecture, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Cloud Computing, Code Generation, Code Review, Continuous Integration, Database Queries, Software Debugging, Distributed Systems, Github, Human-Computer Interaction, Python (Programming Language), MongoDB, MySQL, NoSQL, Ruby on Rails, Redis, SQL Databases, TypeScript, Eslint, Data Storage Management, Tailwind, GitHub Copilot, ReactJS, Amazon ElastiCache, Rspec, Claude Code, Snowflake, Cypress (Programming Language), Backend, Git, Material UI, Maintaining Code, Code Inspection, Codebase, Front End Software Development, React Redux, React Testing Library, Api Design, Restful APIs, Amazon Simple Queue Service (SQS), Code Restructuring
- **Published:** October 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=04372fe1057cdaf9

## About the Role

Core Skills

AI-Assisted Development

 * Experience with AI-assisted development tools (Claude Code, GitHub Copilot, or similar): code generation, refactoring, debugging, and codebase exploration. Ability to craft effective prompts and leverage AI tools to accelerate delivery while maintaining code quality.

Backend (Ruby on Rails)

 * Design, development, and maintenance of Ruby on Rails applications and RESTful APIs (including Grape). Strong focus on clean architecture, scalable patterns, performance, and performance.
 * Experience with testing (RSpec), code reviews, continuous integration, and technical documentation.

Frontend (React)

 * Development of modern web interfaces in React with TypeScript and JSX. Experience with state management (Redux, Zustand) and component-driven architecture. Proficiency with Tailwind CSS and component libraries such as shadcn/ui. Strong UX sensitivity and attention to user experience.
 * Experience setting up and maintaining tests (Jest, React Testing Library, Cypress), and contributing to long-term maintainability

Data & Storage

 * Strong SQL skills with experience writing complex analytical queries. Familiarity with Snowflake is a plus but not required. Experience with environments mixing SQL (MySQL) and NoSQL (MongoDB/Mongoid), and performance/caching tools such as Redis and Elasticache.

Quality & Delivery

 * Strong engineering discipline: automation and tooling with GitHub, CI/CD (GitHub Actions), testing, linting (ESLint), and structured review processes. Experience working with cloud and scalable environments (AWS).

About you

 * You have 3+ years of experience with Ruby on Rails and React with TypeScript.
 * You're pragmatic and autonomous, able to take a feature from design to production.
 * You have strong SQL skills and experience with complex analytical queries (Snowflake is a plus)
 * You're comfortable working with REST APIs and distributed systems
 * You embrace modern development practices: testing, code reviews, CI/CD
 * You have strong communication skills and enjoy working closely with Product teams
 * You care about user experience and pay attention to detail
 * You are fluent in English. Proficiency in French is an asset
 * You are based in the CET/CEST timezone ± 2h (for team collaboration)

## Description

Are you a full-stack developer who loves delivering features from end to end?

Would you like to work in a start-up environment for the leader in Adtech analytics, using cutting-edge tools like Claude Code to accelerate your workflow?

If you enjoy working on problems involving large amounts of data, are curious, passionate, and care about delivering quality user experiences, join our team of talented developers.

As part of the BUILD team, you'll be responsible for developing features across our products' full stack - from API design to user interface - with complete autonomy.

No more silos: you own your features from start to finish.

You will participate in technical design workshops, propose improvements, and work closely with the Product team daily, as well as with our data engineers and data scientists.

Mission

 * Deliver end-to-end features, from API design (Ruby on Rails) to user interface implementation (React), ensuring a seamless user experience.
 * Collaborate closely with the Product team to understand requirements, propose solutions, and iterate on feedback.
 * Optimize existing application code to improve performance and maintainability.
 * Take the initiative to improve our architecture, design, and development workflows.

Our stack

 * 200+ AWS instances (EC2, S3, SQS, Cognito)
 * 10 TB+ of data ingested every day
 * Backend: Ruby on Rails, Grape API, Sidekiq, Python, Scala
 * Frontend: React, TypeScript, Tailwind CSS, shadcn/ui
 * Databases: MySQL, MongoDB, Snowflake, Redis, Elasticache
 * Testing: RSpec, Jest, Cypress
 * DevOps: Git, GitHub, GitHub A