Keywords: C# .NET; Back-end; MS SQL / T-SQL; On-Prem Systems; Distributed Services; Secure Transaction Platforms
Location: Basel-City (on-site)
Salary: CHF 110'000 – 130'000 p.a., depending on seniority
A long-standing private bank in Basel is seeking a Senior Software Engineer to strengthen its technology team. The position focuses on backend development for a customer-facing digital interaction platform, central to the bank’s secure online services. All systems run fully on-premises, relying on Microsoft SQL Server, T-SQL, and a modern .NET environment. You will work closely with engineering leads and domain experts to ensure reliability, performance, and security across core banking processes.
Responsibilities
* Develop and enhance backend components and services using C# and .NET
* Design and optimise data models, stored procedures, and queries on MS SQL Server
* Contribute to the evolution of a high-availability digital client portal
* Collaborate with cross-functional teams (architecture, security, operations)
* Maintain integration points with internal systems and third-party services
* Ensure code quality, testing discipline, and documentation standards
* Support continuous improvement of internal engineering practices
Qualifications
* Several years of professional experience in backend software development in financial services
* Strong command of C#, .NET, and SQL Server (including T-SQL)
* Background working with on-prem enterprise systems
* Understanding of security and performance considerations in financial environments
* English proficiency suitable for daily collaboration
This is an opportunity to join a stable and respected financial institution with a long-term perspective on technology and engineering excellence. If you see yourself contributing to robust, mission‑critical backend systems, your application would be welcomed.
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