Front-end developer

Kassavirtanen Oy; Helsinki; On-site; EUR 42,000 - 60,000; Full time

Benefits offered by this job

Competitive salary

Excellent employee benefits

Modern workspace

Supportive team

Job summary

Kassavirtanen Oy in Helsinki is seeking a Front-End Developer to strengthen our development team. You will build modern, responsive user interfaces and work closely with back-end developers and designers.

The role requires 1–2 years in front-end development, strong React and JavaScript skills, and a commitment to clean, maintainable code. Fluent in Finnish or English and a teamwork mindset are essential to thrive in our Kamppi-based office.

Qualifications

• 1–2 years of front-end development experience
• Strong understanding of React and JavaScript
• Ability to write clean, maintainable code
• Experience working with SQL databases
• Understanding of responsive design and good user experience principles
• Fluent in Finnish or English
• Teamwork skills and a willingness to learn

Responsibilities

• Design and implement modern, responsive user interfaces
• Collaborate with back-end developers and designers
• Build and maintain our own systems and custom web services for clients
• Ensure code quality and adherence to UI/UX best practices

Skills

Frontend development

React

JavaScript

SQL

Tools

React

JavaScript

C# / .NET

SQL

Job description

We are looking for a Front-End Developer to strengthen our development team!

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 Front-End Developer who is passionate about creating user interfaces and has a good eye for functional user experiences.

You will work as part of our development team, where we design and implement our own systems as well as custom web services for our clients. In collaboration with back-end developers and designers, you will build modern, responsive user interfaces for various environments.

Technologies we use:

• React – for building modern user interfaces and components
• JavaScript – strong knowledge of both the fundamentals and advanced features
• C# / .NET – for back-end development
• SQL – handling databases and integrations

What we expect from you:

• Previous experience in front-end development (at least 1-2 years)
• Strong understanding of React and JavaScript
• Ability to write clean, maintainable code
• Experience working with SQL databases
• Understanding of responsive design and good user experience principles
• Fluent in Finnish or English
• Teamwork skills and a willingness to learn

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
• A competitive salary and excellent employee benefits

Osaamisalue:

IT & tietoliikenne