Senior Fullstack Engineer (Go/Kotlin/React)

Location: Based in the Helsinki or Berlin tech hubs

Company

hirify.global builds technology for delivery services, helping merchants operate and grow across markets in Europe and beyond.

What you will do

• Build and maintain production software across backend services and user-facing applications.
• Develop merchant products covering onboarding, analytics, recommendations, menu and order management, integrations, and merchant-facing tools.
• Design reliable APIs, data models, services, and user-facing features.
• Own features from implementation through production and ongoing maintenance.
• Collaborate with product managers, designers, operations, data specialists, and engineers to turn business needs into technical solutions.
• Improve system quality, scalability, observability, and maintainability, including effective use of AI-assisted development tools.

Requirements

• Proven experience building production software end to end and at scale in backend, frontend, or fullstack environments.
• Strong expertise in at least one area of the stack and willingness to contribute across frontend and backend boundaries.
• Experience with Go, Kotlin, Java, or a similar backend language, and/or TypeScript and React.
• Good understanding of APIs, databases, testing, and software design fundamentals.
• Ability to work independently on well-scoped problems and collaborate effectively.
• Pragmatic mindset, strong communication skills, and experience leveraging modern AI tools.

Nice to have

• Experience with merchant-facing or internal operational tools, analytics, recommendations, or decisioning systems.
• Experience in grocery, retail, restaurants, logistics, marketplace technology, or integrations with external business systems.
• Experience with Kafka or other streaming technologies.
• Experience with AWS, Kubernetes, Docker, or cloud infrastructure.

Culture & Benefits

• Ownership of features and services from development through production.
• Close collaboration across engineering, product, design, data, and operations.
• Pragmatic approach focused on simple, maintainable solutions and business impact.
• Flexibility to work across frontend and backend boundaries based on the problem being solved.
• Opportunity to work on merchant products used across Europe and develop skills across the stack.

Hiring process

• Recruitment process details are provided through hirify.global’s recruitment information.