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Thales

Java Developer | Build Systems That Guide Aircraft, Not Ads

Thales is hiring a Java Developer | Build Systems That Guide Aircraft, Not Ads. Level rates it ; you can apply on Thales.

Level's read on this job

  • On Level's scale, this role is Little AI ●○○○: aI is not part of the work.
  • Some of the work can be done remotely, according to the posting.
  • The posting mentions Java, Spring Boot and Kafka among its tools and skills.
  • Level classes it as a mid-level role.
  • Thales has 3,600+ other open roles on Level.

AI in this role

Java backend engineer to build critical infrastructure systems for air traffic and defence programs.

JavaSpring BootKafkaDockerKubernetes
backendmicroservicesrest-apici-cd
Location: Bucharest Orhideea, Romania

🛫 Your code will run where failure isn't an option

We're Thales ECC Bucharest, one of the fastest-growing engineering centers in the city. We build software for air traffic, defence, and critical infrastructure across Europe. Not another CRUD app. Systems that stay up when everything else goes down.

THE WORK:

Java backend engineering across the full lifecycle, on long-horizon European programs. REST APIs, services, and platforms with real domain complexity, real users, real stakes.

YOUR STACK:

Java 11+, Spring / Spring Boot, microservices, REST, CI/CD. Kafka, Docker, K8s are a plus, not a gate.

YOU:

2+ years as a Java or backend engineer, curiosity about the domain, and the patience to build things that last a decade, not a sprint. Not ticking every box? Apply anyway. We hire for trajectory, not checklists.

🤝🧑‍💼 WHAT'S IN IT FOR YOU:

Competitive package, private medical care, meal tickets, flexible/hybrid working, learning budget and certifications, and the stability of a group that has been building critical technology for 130 years.

🗼 FRENCH TRACK:

French is a multiplier here, never a requirement. Our French-language programs are growing quicker than we can staff them, and if you speak it, we pay attention to that in the offer.

🚀 WHAT HAPPENS NEXT:

This is an open door, not a single vacancy. We hire Java continuously across our programs. Apply in five minutes, no cover letter. Answer a few short questions about your stack and seniority, and a recruiter dedicated to your domain takes it from there. When the right project opens, you're matched first, at your level, on your timeline.

5️⃣⏱️ One application. Five minutes. No cover letter.

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.

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.

How we rate this

Java Developer | Build Systems That Guide Aircraft, Not Ads at Thales rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

  1. ●●●● Builds AI80 to 100
  2. ●●●○ Works on AI60 to 79
  3. ●●○○ Uses AI40 to 59
  4. ●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

BackendMicroservicesREST APICI/CDJavaSpring BootKafkaDocker

Questions you could be asked

  1. Tell me about a project where backend was part of your work. What did you do?
  2. Tell me about a project where microservices was part of your work. What did you do?
  3. Tell me about a project where rest api was part of your work. What did you do?
  4. Tell me about a project where ci/cd was part of your work. What did you do?
  5. Walk me through how you've used Java in your day-to-day work.

Adapt your resume

  • List these exact terms on your resume: Backend, Microservices, REST API, CI/CD, and Java. An applicant tracking system matches the wording, not the idea.
  • Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.

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