Posted on 04 Dec 2025
HelloWork builds next generation Talent Operations practices and helps companies build teams. We're looking for a Full-Stack Developer to join one of our client teams in Helsinki.
You'll be building web applications end-to-end – creating user interfaces that people love to use and the server-side systems that power them. This means working across the entire technology stack to deliver features that solve real problems for users.
What you'll do
• Build responsive web applications using modern JavaScript frameworks like React, Vue.js and Next.js
• Develop backend APIs and services using Node.js, Python, or Java
• Work with databases (PostgreSQL, MongoDB, or MySQL) to store and retrieve application data
• Implement user authentication and authorization systems
• Create and maintain CI/CD pipelines for automated testing and deployment
• Collaborate with designers to turn mockups into pixel-perfect, interactive user interfaces
• Optimize application performance for both frontend and backend systems
• Write clean, maintainable code that other developers can easily understand and extend
• Participate in code reviews and help maintain high code quality standards
What we're looking for
• Experience building several commercially viable full-stack web applications
• Taste in product and UI. You have sense of what makes a great user experience and care about the details
• Strong JavaScript/TypeScript skills and experience with modern frontend frameworks
• Backend development experience with Node.js, Python, or Java
• Knowledge of modern API design and implementation
• Familiarity with cloud platforms (AWS, Azure, or GCP) and containerization (Docker)
• Knowledge of testing frameworks and practices for both frontend and backend
• Understanding of information security best practices
Nice to have
• Experience with GraphQL
• Familiarity with DevOps practices and tools
• Experience with mobile app development (React Native, Flutter)
• Knowledge of performance optimization techniques
Checked a lot of boxes? We'd love to hear from you.