Python AI Agent Engineer (Mid-level)

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: Python AI Agent Engineer (Mid-level)

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.