30.09.2026
Senior Software Developer
.NET, SQL, AI Driven
Join the product development organization behind an established business-software product, working alongside its existing team as an external developer on a focused, project-based engagement.
Start
15.10.2026, ASAP
Duration
3 months
Location
Helsinki, Hybrid, remote
Allocation
100%
In this role, you will:
- Develop and maintain product functionality using VB.NET/.NET Framework alongside modern C# on .NET Standard 2.0 / .NET 8+, working across both legacy and current parts of the codebase.
- Work with SQL for data access and logic, and HTML, CSS, and JavaScript on the front end.
- Apply AI-native development methods and practices as part of day-to-day work, using the AI tooling the client provides.
- Support and coach more junior team members as a senior presence on the team, not just as an individual contributor.
- Collaborate closely and communicate effectively as part of an established product team, getting things done efficiently.
- Work primarily remotely, with occasional in-person meetings at the client's Helsinki or Lappeenranta office (travel expensed).
You will thrive if:
- You're a senior developer with strong, hands-on experience across VB.NET/.NET Framework and modern C#/.NET (Standard 2.0 and/or .NET 8+), comfortable moving between both.
- You have solid SQL skills and working knowledge of HTML, CSS, and JavaScript.
- You have real experience with AI-native/AI-assisted development methods, not just familiarity with the concept.
- You're an effective communicator and team player who can support and mentor less experienced developers.
- Prior experience with payroll/HR functionality or financial management software is a plus, though not required.
- You're fluent in both Finnish and English.
- You can start around mid-October and commit to an initial ~2–3 month engagement (suggested period mid-October through year-end).
