Thales
AI Agent Developer (Mid-level)
ThalesRomania17 hours ago
Full-timeSales, Business Development
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: AI Agent Developer

About the Mission:

Join us in building the future of AI-enhanced engineering. We're creating a revolutionary agent garden from the ground up—a programmatic system that will enable 40,000+ engineers to seamlessly work with AI agents, tools, and data.

As an Agent Garden Developer, you'll work on the core infrastructure that powers this system: building agents, creating connectors, implementing orchestration logic, and enabling the marketplace where engineers discover and contribute to AI services.

This is a unique opportunity to work at the cutting edge of AI and software engineering, learn from experienced tech leads, and contribute to a system that will have massive real-world impact.

What We Offer:

  • Mentorship program: Learn from experienced tech leads and principal engineers
  • Growth opportunities: Clear development path with support for advancing your skills
  • Agile, autonomous teams with management-free delivery, clear roles, and predictability focus
  • Modern tech stack: Work with latest AI/ML technologies, frameworks, and tools


Why This Role is Exciting:

  • Work with Cutting-Edge AI: get hands-on experience building agentic AI systems
  • Learn from Experts: work alongside tech leads and principal engineers who will mentor you
  • Massive Impact: your code will power a system used by 40,000+ engineers
  • Greenfield Project: build new infrastructure with modern technologies while connecting to existing systems
  • Career Growth: clear path to senior roles with mentorship, challenging projects, opportunities to lead


What You'll Do:

Build Agent Infrastructure:

  • Develop agents, MCP (Model Context Protocol) connectors and more
  • Build frameworks making it easy for others to create and deploy agents
  • Contribute to the programmatic (code-first) system architecture


Integrate AI with Engineering Tools:

  • Work with AI/ML APIs (OpenAI, Anthropic, or similar) to build intelligent features
  • Implement prompt engineering patterns and interaction flows
  • Connect AI capabilities with engineering tools (e.g., GitLab, Polarion, data sources)
  • Build authentication and authorization for secure multi-system integration


Write High-Quality Code:

  • Follow software craftsmanship principles: TDD, clean code, living documentation
  • Write unit and integration tests for your components
  • Participate in code reviews and learn from senior engineers
  • Document your work to help others build upon it


Grow Your Skills:

  • Work closely with tech leads and principal engineers who will mentor you
  • Learn emerging technologies: agentic AI, prompt engineering, MCP
  • Take increasing ownership of features and components
  • Share your learnings with the team and contribute to knowledge base


About you:

Your Experience:

  • Backend development: Python, Kotlin, Node.js, or similar languages
  • API integration: Worked with RESTful APIs, understand authentication fundamentals
  • Problem-solving: Can break down complex problems and implement solutions
  • Collaboration: Worked in team environments using Git and code reviews


Your Technical Skills:

  • Programming: Python or other backend languages (Java, Node.js, Kotlin)
  • APIs: RESTful design, HTTP, JSON, authentication (OAuth, JWT)
  • Data handling: Databases (SQL or NoSQL), data processing
  • Testing: Unit testing, basic integration testing
  • Tools: Git, basic CI/CD, command-line proficiency
  • Cloud services: Experience with AWS, Azure, or Google Cloud


Your Approach:

  • Quality-conscious: Care about writing code that works reliably
  • Test-aware: Understand value of automated testing and TDD/BDD practices (even if still building these skills)
  • Eager to learn craftsmanship: Excited to grow your software craftsmanship practices


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.

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