Fullstack Developer – Fragus Group

Description:

About the Company Fragus Group is the Nordic region's leading provider of vehicle warranties and digital solutions for the mobility sector. From its headquarters in Mölndal (Gothenburg), the company operates several digital initiatives that modernize and simplify the automotive industry – with proprietary systems handling everything from accounting and inventory to warranty and claims processing across five Nordic markets. The company is undergoing a comprehensive technical modernization, where legacy systems are gradually being migrated to modern frameworks and APIs. The codebase spans from .NET Framework 4.7.2 to .NET 8.0, complemented by React SPAs alongside the existing ASP.NET MVC 5 application. Here you're not just building features – you're helping shape how a critical platform used daily by hundreds of users across the Nordic region evolves. About the Role We're looking for a Full-Stack .NET/React developer who wants to take a key role in the development team for the V4 platform – Fragus's internal claims management system. You'll work closely with system developers, product owners, and external integration partners to further develop a complex and business-critical solution. This role suits you if you thrive in a senior, hands-on position with significant technical responsibility. You'll maintain and develop a large ASP.NET MVC 5 application with Razor views alongside modern React SPAs and .NET 8.0 APIs. You'll work with system integration against external solutions like Visma, Volvo, SuperOffice, and Postmark – and you're comfortable navigating a hybrid environment where legacy and modern technology coexist. You'll become part of a skilled team with low bureaucracy, high technical standards, and a strong culture – "freedom with responsibility" in practice. What You'll Do Design and develop backend services and APIs in C# / ASP.NET Core Web API (.NET 8.0) Maintain and further develop the existing ASP.NET MVC 5 application with Razor views Develop modern frontend interfaces in React (v17–v19), TypeScript, and Redux Toolkit Model and optimize database structures in SQL Server (Dapper, Entity Framework 6 / EF Core) Build and maintain integrations with external systems – ERP (Visma), CRM (SuperOffice), vendor APIs (Volvo), email services (Postmark) Work with CI/CD in Azure Pipelines and hosting on IIS / Windows Server Contribute to architecture and design decisions regarding modularity, performance, and security Participate in the entire development lifecycle – from analysis to release and optimization Who We're Looking For Must-haves: At least 5 years of experience in system development with C# / .NET Strong experience with ASP.NET MVC and/or ASP.NET Core Web API React + TypeScript (functional components, hooks) SQL Server and experience with ORMs (Dapper and/or Entity Framework) Experience with system integration – building and consuming RESTful APIs against external systems Understanding of authentication and security (JWT, OAuth2, role-based authorization) Git and CI/CD (Azure Pipelines or similar) Fluent in Swedish and English Personality: Self-driven, takes ownership, thrives with freedom and responsibility Meritorious: Redux Toolkit, React Query, Material UI (MUI 5) Internationalization (i18next or similar, multi-market systems) Experience migrating from legacy .NET Framework to .NET Core / .NET 8 IIS hosting and Windows Server operations Bootstrap, Kendo UI, or jQuery (legacy context) SCSS / CSS Modules / CSS-in-JS Testing with xUnit / NUnit + Moq, Jest + React Testing Library What We Offer Key role in a long-term and strategic development project Modern tech stack combined with a technically challenging hybrid environment Stable and mature company with senior colleagues, low bureaucracy, and high technical standards Hybrid model – flexible arrangement for remote work and office time Benefits according to policy Practical Information Location: Mölndal (Gothenburg) Employment type: Permanent position Start date: By agreement Languages: Swedish and English (required) Recruitment Process Initial conversation with Lynqa Interview with the team – technology and culture In-depth technical interview Reference checks Offer About the Position Scope: Full-time, permanent position Start date: By agreement Location: Mölndal (Gothenburg) This is a direct recruitment. Lynqa manages the recruitment process. About Lynqa Lynqa is your career partner in tech. We work with selected product companies and cutting-edge tech teams – roles you rarely see on typical job boards. With us you get quick feedback, a personal contact, and access to opportunities before they're announced. Curious about what's available? Reach out to [email protected] Lynqa – we connect peopleAbout the Company Fragus Group is the Nordic region's leading provider of vehicle warranties and digital solutions for the mobility sector. From its headquarters in Mölndal (Gothenburg), the company operates several digital initiatives that modernize and simplify the automotive industry – with proprietary systems handling everything from accounting and inventory to warranty and claims processing across five Nordic markets. The company is undergoing a comprehensive technical modernization, where legacy systems are gradually being migrated to modern frameworks and APIs. The codebase spans from…

Overview

Type

job

Status

active

Visibility

public

City

Göteborg

Address

Götgatan 10

GPS

57.708043155984, 11.969349123017copyopen in

Email

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Views

6

Published

24. 3. 2026

Edited

3. 8. 2026

Specifications