Senior .NET Developer

WHO WE ARE? ALTEN – A Global Leader in Engineering and IT Services Founded in France in 1988, the ALTEN Group is a leading technological partner serving the world’s largest clients. In 2023, it achieved revenues exceeding 4.07 billion euros and employs over 57,000 people, 88% of whom are engineers and IT experts.

ALTEN Polska has been operating for 13 years, supporting its clients' innovation, research and development, and IT systems. It has offices in Kraków, Warsaw, Wrocław, Gdańsk, and Poznań. It serves key industries such as aerospace, space, industrial solutions, automotive, railway, energy, finance, telecommunications, and retail.

Areas of expertise : business analysis, cybersecurity, artificial intelligence, data analysis and cloud solutions, application development, software testing, project management, embedded software, quality management, industrialization, digital transformation, and industrial engineering. For more information, visit : [link] I am looking for experienced specialists for an Senior .NET Developer position for our client in the logistics industry. Project Info: 📅 Start: December 1, 2026 📍 Location: hybrid work in Warsaw (3 days per week working from Warsaw office) Main tasks: Maintain and extend the Windows Service (C#, .NET Framework), including its multi-threaded, timer-driven import and export processing.

Develop and optimise SQL Server data access: stored procedures, Dapper-based repositories, and handling of deadlocks, lockin