Kassavirtanen Oy · Helsinki, Finland ·
A back-end developer builds scalable services and REST APIs in C#/.NET with SQL, powering Kassavirtanen's own invoicing systems and custom web services for clients, collaborating with front-end developers and designers from a Helsinki office.
Invosy Finland Oy · Helsinki, Finland
Invosy Finland Oy · Helsinki, Finland
HR Plus (Talent) Limited · Hong Kong, Hong Kong SAR, Hong Kong
Europe Observer · Ontario, Canada
Työpaikkakuvaus
Who we are
Kassavirtanen Oy is a growing invoicing service company that designs and develops its own systems, websites, and digital services for businesses. We operate from a modern office in the heart of Helsinkis Kamppi district, where teamwork and open communication are at the core of everything we do.
We focus on high-quality code, long-term development, and understanding our clients' businesses. You will have the opportunity to work on meaningful projects that matter to us and our clients.
Your role with us
We are now looking for a Back-End Developer who is passionate about building scalable and efficient back-end systems.
You will work as part of our development team, designing and implementing back-end services and APIs that power both our own systems and custom web services for our clients. In collaboration with front-end developers and designers, you will help build powerful solutions that provide smooth and seamless user experiences.
Technologies we use:
C# / .NET – for back-end development
SQL – working with databases and integrations
JavaScript – basic knowledge for handling API integration and client-side logic
REST APIs – building and maintaining APIs for web services and systems
Familiarity with cloud platforms (Azure, AWS) and DevOps practices is a plus
What we expect from you:
Previous experience in back-end development (at least 2 years)
Strong knowledge of C# / .NET and SQL databases
Experience with designing and building REST APIs
Ability to write clean, efficient, and maintainable code
Experience working with version control (Git)
Understanding of application architecture and scalability
Teamwork skills and a willingness to learn
Fluent in Finnish or English
What we offer you:
Interesting projects with the opportunity to influence their implementation
A supportive work environment and colleagues who will help you grow
A modern workspace in a cozy office in the heart of Kamppi
Interested?
We review applications and conduct interviews throughout the application period, so we encourage you to apply as soon as possible via our online application form.
You are also welcome to send us an open application, as we are always interested in hearing from talented people. Please remember to indicate in your application which position you are applying for.
Solvimon · Netherlands