Location: Bucharest, Romania

Thales is a global technology leader trusted by governments, institutions, and enterprises to tackle their most demanding challenges. From quantum applications and artificial intelligence to cybersecurity and 6G innovation, our solutions empower critical decisions rooted in human intelligence. Operating at the forefront of defence and security, aerospace and space, cybersecurity and digital identity, we’re driven by a mission to build a future we can all trust.

 

In Romania, we are advancing innovation through software engineering, research and development, delivering solutions in key markets in which Thales Group operates. Our engineers design, develop and integrate solutions that impact global industries – from fully operational systems and subsystems for naval warfare and maritime security operations, to air traffic management systems, satellite-based solutions, tactical indoor simulations, identity and biometric technologies and more.

Role: Senior Fullstack engineer  (React/TypeScript & Python/Node.js)

Mission:

Join us in building the future of engineering productivity. We're creating a ground-breaking agent garden that will transform how 40,000+ engineers work—enabling seamless connections between AI systems, engineering tools, and data while fostering a thriving marketplace of AI agents and services.

As a Senior Full-Stack Developer, you'll play a critical role in bridging the gap between our sophisticated agent garden and the tools engineers use every day—from custom UIs to deep integrations with tools like GitLab, Polarion, and beyond.

Why This Role is Exciting:

Build Something RevolutionaryWork on the cutting edge of agentic AI and developer experienceMassive ImpactYour code will be used by 40,000+ engineers across the organizationInnovation Lab EnvironmentJoin an active AI innovation lab and internal AI community in Thales RomaniaShape the SystemSignificant influence on technical decisions, architecture, and team culture

What you will do:

Build User-Facing Experiences:

Design and develop intuitive web applications interfacing with our agent gardenCreate dedicated UI components making complex AI interactions simple and powerfulBuild responsive, accessible interfaces using modern web technologies (React, TypeScript)

Integrate with Engineering Tools:

Develop deep integrations with COTS products like GitLab, Polarion, and other development toolsEnable agentic AI capabilities within existing workflows (e.g., AI-powered code review)Design and implement APIs connecting our system with diverse engineering ecosystems

Enable the AI Revolution:

Work closely with AI agents Developers to expose backend capabilities through agentic interfaces (MCP server or agent tools)Build configuration and management interfaces for agents, MCP or A2A Catalog, and marketplace featuresImplement traceability and auditability features giving users visibility into AI actionsEnforce the IAM delegation from the user to agents to performs engineering action in a secure way

Champion Quality & Craft:

Apply software craftsmanship principles: TDD, clean code, living documentationWrite comprehensive tests (unit, integration, E2E) and maintain high code qualitySupport development of junior/mid engineers through code reviews, pair programming, and coordinating mentorshipContribute to technical decisions and architectural choices

About you:

You hold a master’s degree in engineering, computer science, or a related field. professional experience in full-stack developmentFrontend: React, TypeScript, HTML5, CSS3, modern build toolsBackend: Python, Node.js or GOAPIs: RESTful, GraphQL, WebSocket, authentication/authorization (OAuth, JWT)Databases: SQL and NoSQL, ORM frameworksIntegration specialist: Proven track record with third-party systems and COTS productsDevOps awareness: CI/CD, containerization (Docker), cloud infrastructureCloud services: Experience with AWS, Azure, or Google CloudYour ApproachCraftsmanship first: BDD, DDD, TDD, clean code principlesQuality obsessed: Balance speed with robustness and maintainabilitySecurity conscious: Think about cybersecurity implications in designsDocumentation lover: Living documentation and knowledge sharing

Mobility:

Travels to France to consider

Languages:

English – mandatoryFrench – would be a plus

At Thales, we’re committed to fostering a workplace where respect, trust, collaboration, and passion drive everything we do. Here, you’ll feel empowered to bring your best self, thrive in a supportive culture, and love the work you do. Join us, and be part of a team reimagining technology to create solutions that truly make a difference – for a safer, greener, and more inclusive world.