Senior FullStack Developer (K/M)

Astek is a French-founded (1988) international IT and engineering consulting group with expertise in multiple industrial and technological sectors. The group supports international clients in product development, service implementation, and digital transformation. Astek employs over 10,000 people worldwide working on diverse technology and engineering projects. In 2025, the group reported revenues of 730 million euros.

• Minimum 5 years experience with Java (7/8+), Spring Framework, Spring Boot, SQL, Maven, and Git.
• Primarily a Backend Developer with additional frontend experience.
• Experience designing and implementing REST APIs.
• Knowledge of testing best practices, unit testing, and TDD.
• Experience working on large, complex enterprise systems.
• Comfortable analyzing and evolving legacy code.
• At least 2 years experience with Angular and Jasmine.
• Fluent in English.

Nice to have:

• Experience in banking or financial projects.

• Develop and maintain systems for corporate clients.
• Create and enhance backend services and REST APIs.
• Implement new features, fix bugs, and support production incidents.
• Write unit tests and ensure code quality.
• Modernize existing solutions and work with legacy code.
• Collaborate in an international Agile (SAFe) environment.

The administrator of personal data is ASTEK Polska sp. z o.o. with its seat in Warsaw (00-133), Al. Jana Pawla II 22. Candidates have rights to access, correct, delete, and restrict processing of personal data as outlined by applicable law. Data is processed for recruitment purposes. Providing mandatory data under labor law is obligatory for recruitment; refusal may prevent application processing. Consent for additional data processing may be withdrawn anytime. Data recipients include Just Join IT and other entities processing data for recruitment purposes. Whistleblower procedures are in place as per ASTEK guidelines.