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C# (.NET) Junior Software Developer

Thales

Bucharest Hybrid permanent

Posted: March 2, 2026

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Quick Summary

A junior software developer will work on a wide range of projects, including quantum applications, artificial intelligence, cybersecurity, and 6G innovation, with a focus on human intelligence.

Job Description

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.

Context:

Thales Services Numériques works on outsourcing operations for more than sixty customers. We support our customer’s system with the MRO activity, Our activity is based on the MRO, development of the IT to support applications, transformation of existing applications to the Cloud, Secure hybrid outsourcing or on premise infrastructure, and apply security audits on platforms and remediation’s plan.

Description:

You will join an Agile team that includes all software-related roles (System Engineers, Developers, Integrators).

Required competencies:

• Design and develop our LDT software solution;
• Participate in the validation and global integration of the software you help develop;
• Analyze anomalies and maintain previous versions of the software to ensure customer satisfaction throughout the product lifecycle;
• Maintain and improve our development environment (Continuous Integration, DevOps practices);
• Contribute to the software architecture based on existing product components;
• Collaborate with other product teams within the Thales solutions ecosystem, working in a scaled Agile framework (SAFe).

Seniority of practice : JNR: 1-3 years

Requested  experience:

• You have a degree in Computer Science and bring experience in the following areas:
• Engineering degree or equivalent background, with initial experience in software development or completion of a relevant project.
• Proficiency in C# (/NET), within a real-time environment.
• Experience with Continuous Integration tools, such as Jenkins.
• Solid knowledge of configuration management, especially with GIT.
• Strong adaptability and ability to work effectively in a team setting.
• Demonstrated rigor, with strong analytical and synthesis skills.
• Capable of taking initiative and showing tenacity in achieving objectives.
• You are committed to delivering high-quality technical solutions and passionate about contributing to innovative projects in the aerospace sector.

Behavioral skills:

• English fluent
• Strong team player
• Be autonomous and proactive on your tasks,
• Teamwork and knowledge sharing.
• Sense of responsibility
• Good communication skills
• Has a continuous learning mindset and learning of new paradigms, techniques & practices in build-test-release cycles and software automation
• Understand the necessity of stability in the infrastructures.

Mobility :

• Travel to France, depending the project requirements

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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