Full Stack Tech Lead for Defense Business

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.

About the project
Thales’ Defence Business Unit, part of the Romanian Engineering Competence Center, develops cutting-edge solutions and services for electronic combat systems, surveillance and reconnaissance, naval combat, surface warfare, and underwater warfare, integrating sensor and weapon systems with advanced data processing, decision support, and human-machine interfaces.
Together with specialists from our Sophia-Antipolis site, we contribute to the development of sonar systems for submarines and surface vessels, from underwater acoustics to the operator's graphical user interface (GUI).

About the job
We are looking for an experienced Full Stack Technical Lead with strong React experience, to join our engineering team and help us develop and evolve the software platform for the Sonar interface.

You will be part of a multidisciplinary and self-managing Agile team located in our premises in Bucharest. Our teams develop and test applications, features and/or components the software platforms used in the Defence domain. The development teams are responsible for the entire development cycle – from requirements analysis, development, testing and validation, to demonstrating the current status of the product. Cybersecurity is an integral part of the whole process.

You will collaborate with colleagues from France. The GUI team is responsible for designing, developing, and maintaining the operational GUIs for sonar operators. These GUIs are the eyes and ears of the submarines and surface ships.

Your tasks include

• Actively contributing to the design of the software architecture of the sonar GUI component by supporting the software architect
• Providing technical guidance to the GUI development team (up to 7 people)
• Conducting preliminary studies to validate technical approaches and chosen architectures
• Being a major contributor to the setup of the CI/CD pipeline for the component
• Providing support to software integrators
• Translate requirements into functional solutions. Writing technical documentation (specifications/design)
• Evaluate and implement new technologies to integrate into and improve our products
• Ensure consistent compliance with best practices and coding standards
• Collaborate with stakeholders to understand and translate technical requirements

About you
Do you have a passion for technology, do you enjoy constantly developing your skills and are you interested in working on Defence systems for the Underwater Domain? Then you are the person we are looking for.

You are an experienced full stack technical lead with strong React experience. You enjoy personal development, both in hard skills and human skills. Your relevant hands-on past experience includes:

• Web development experience (10 years)
• Solid experience in using React (5+ years)
• Solid experience in Java backend development (5 years)
• Demonstrated technical guidance over a 5 people (incl. seniors) team for at least 3 years
• Fluent in software configuration management (GIT/GITLAB/ARTIFACTORY/NEXUS)
• Experience in writing software specification and design documents

You hold a bachelor or master degree in computer science, IT service management or comparable. You have flexibility and the ability to communicate fluently in English to all types of stakeholders (technical, management).

An important requirement to fulfil this role is flexibility and the ability to communicate efficiently in English (French is a plus) to all types (technical, management) of stakeholders. You are willing to work for in France for a period of a couple of weeks up to 3 months for the purpose of knowledge transfer.

Your career at Thales

Joining Thales, you will integrate into a tight-knit team working in an international and friendly environment. Thanks to various teams working on multiple fields and domains, all located in Bucharest, you will be able to evolve and grow your competences in different areas.

Joining Thales will bring you:

• A challenging job in a great team within our high-tech, innovative work environment. Includes the freedom for initiative and good ideas.
• Room for personal and professional growth within our organization, for example in regards to technical, commercial or international skills.
• Valuable international collaboration with coworkers from 68 different countries around the globe.
• A comfortable work space in a modern environment, with a focus on flexibility and the right work life balance.
• You will have a hybrid work arrangement. Within Thales, we aim for 60/40 a balance, where you work from home at least two days a week, when your role allows this.

Your immediate benefits

• 24 holiday days a year
• Benefit Online
• A good work-life balance which includes flexible working hours
• A comprehensive compensation and benefit package including medical coverage & life insurance
• Hybrid Workplace YOUR WORKING LOCATION IN ROMANIA (hybrid flexible work)

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.