Senior Fullstack Engineer

Benifex Denmark A/S; København; On-site; DKK 700,000 - 950,000; Full time

Benefits offered by this job

ITP1 pension

Lifeplan – pension advisory service

Collective agreement

Benefits portal access

Wellness allowance

30 vacation days per year

Referral bonuses

Enhanced parental pay

Volunteer Days

Job summary

Benifex Denmark A/S is seeking a Senior Fullstack Engineer to work across frontend and backend areas supporting employee experience products, mobile app, and platform look and feel.

You will contribute to frontend development using React, TypeScript, and Angular, while designing and maintaining backend services with Java, Spring Boot, and SQL. The role emphasizes reliability, security, and maintainability with opportunities to leverage AI-assisted coding tools.

Qualifications

• Experience with fullstack development across frontend and backend.
• Proficient in React, TypeScript, and Angular for UI work.
• Strong backend skills with Java, Spring/Spring Boot, and SQL.
• Experience designing and consuming APIs and integrations.
• Familiarity with CI/CD, testing, and observability in production environments.
• Practical AI-assisted coding experience or interest in AI-driven workflows.

Responsibilities

• Design, build, and maintain fullstack features across employee experience products and platform UI areas.
• Build frontend functionality in React and TypeScript and support existing Angular-based applications.
• Develop and maintain backend services, APIs, and data flows using Java, Spring/Spring Boot, and SQL.
• Integrate frontend experiences with reliable APIs and platform services.
• Refactor legacy code and improve reliability, security, performance, and accessibility.
• Participate in code reviews, testing, documentation, and knowledge sharing.
• Mentor other engineers and contribute to technical decisions.
• Use AI-assisted coding tools to explore codebases, write tests, or accelerate delivery.

Skills

Java

Spring Boot

SQL

React

TypeScript

Angular

API design

CI/CD

Observability

AI-assisted coding

Tools

Java

Spring

React

TypeScript

Angular

SQL

Job description

Apply for this job. We usually respond within three days

Who are Benifex?

We are a fast-moving technology company, and one of the most successful providers of online reward and benefits solutions in the world. We believe that everyone deserves an exceptional experience at work, every day, and build workplace technology that makes this happen. Benifex’s mission is to build remarkable experiences that employees love. Today Benifex supports more than five million employees in over 3,000 organisations across more than 100 countries. To help us on our quest to be the best, we need brilliant people on board and that’s where you come in.

Why should you apply?

• Impact: work on a product suite used by millions of people that improves employee experience and wellbeing.
• Scale: we focus on building features and services to support our customers globally.
• Autonomy: have an input into the product roadmap and technically lead features/services.
• Development: this is a crucial part of our aim to ensure a seamless experience across FPS.
• Top 10 Employer, Sunday Times Best Places to Work Awards.
• Work for a profitable, fast-growing market leader in the online reward and benefits space.

Role Overview

As a Senior Fullstack Engineer, you will work across frontend and backend areas that support Benifex employee experience products, mobile app, and platform look and feel.

The team is responsible for operational continuity, technical stability, and continuous improvement beyond the product roadmap, which means the work often involves balancing new development with careful maintenance, refactoring, and production reliability.

This role suits someone who enjoys complex domains, established systems, and end-to-end ownership. You will contribute to frontend development in React, TypeScript, and Angular, while also designing and maintaining backend services, APIs, and integrations using Java, Spring/Spring Boot, and SQL.

We are also on a journey to use AI more deliberately in our daily engineering work. We are looking for someone who has practical experience with AI-assisted and agentic coding workflows, or who wants to keep exploring how these tools can help us move faster, improve quality, understand complex codebases, and reduce repetitive work without lowering our engineering standards.

Great benefits

• ITP1 pension.
• Lifeplan – a leading financial advisory service that offers personalized advice for maximizing your pension savings.
• Collective agreement.
• Access to our comprehensive benefits portal.
• Generous wellness allowance.
• 30 vacation days per year.
• Referral bonuses.
• Enhanced parental pay.
• Volunteer Days – two paid days annually to give back to the community.

Responsibilities

• Design, build, and maintain fullstack features across employee experience products and platform UI areas.
• Build frontend functionality in React and TypeScript and support existing Angular-based applications.
• Develop and maintain backend services, APIs, and data flows using Java, Spring/Spring Boot, and SQL.
• Integrate frontend experiences with reliable, well-designed APIs and platform services.
• Safely evolve a large, long-lived codebase through incremental refactoring and technical debt reduction.
• Treat reliability, security, performance, accessibility, and maintainability as core parts of delivery.
• Participate in code reviews, testing, documentation, and knowledge-sharing.
• Help investigate bugs and production issues, identify root causes, and prevent recurring problems.
• Mentor other engineers and contribute to technical decisions within the team.
• Use AI-assisted and agentic coding tools thoughtfully as part of daily development, code exploration, testing, refactoring, and documentation.
• Help the team learn where AI adds value, where human judgement is still essential, and how to use these tools responsibly in a complex production codebase.

What are we looking for?

• Java, Spring/Spring Boot, and SQL: Needed to build and maintain backend services, APIs, and data-driven functionality.
• React, TypeScript, and Angular: Needed to contribute across both future frontend development and existing FPS frontend areas.
• API design and integration: Important for creating dependable interfaces between frontend, backend, and platform services.
• Testing, CI/CD, and observability: Needed to deliver reliable changes and diagnose issues in production-like environments.
• AI-assisted and agentic coding: Practical experience using AI coding tools to explore codebases, generate or refactor code, write tests, support reviews, or accelerate delivery while maintaining strong engineering judgement.

Department

Product Engineering - Nordics

Locations

Gothenburg

Remote status

Hybrid

We are a proud member of the Disability Confident employer scheme. If you require any reasonable adjustments at any stage during the recruitment process, please let us know with your application.