Senior Java Fullstack Developer

Sigma Group; Göteborgs kommun; On-site; SEK 760,000 - 960,000; Full time

Benefits offered by this job

Competitive salary

Pension plan

Annual conference trip abroad

Opportunity to influence direction

Close relationship with manager

Long term assignments

Internal networks and projects

Social activities

Job summary

Sigma Technology Digital Solutions in Gothenburg is hiring experienced full-stack developers to design robust Java backends with Spring Boot and build modern React frontends.

You will work in cloud native environments on AWS, collaborate with architects, product owners and other developers, and contribute to CI/CD pipelines and quality assurance.

This permanent role offers long-term assignments with top clients, a dedicated manager and real career development.

Qualifications

• 6+ years of professional software development experience.
• Strong Java backend with Spring Boot and REST APIs.
• Solid React and TypeScript in production applications.
• Hands-on AWS experience and cloud native patterns.
• Experience with Git, CI/CD, and agile methods like Scrum or Kanban.
• Degree in computer science or software engineering.
• Good communication in Swedish and English.

Responsibilities

• Design, build and maintain backend services in Java with Spring Boot.
• Build user facing React/TypeScript apps with maintainability and UX focus.
• Work with cloud infrastructure on AWS (ECS/EKS, Lambda, S3, RDS, API Gateway).
• Contribute to CI/CD pipelines and automated testing.
• Participate in architecture discussions and code reviews.
• Act as trusted advisor towards the client.

Skills

Java

Spring Boot

React

TypeScript

AWS

Git

CI/CD

Scrum/Kanban

Communication (Swedish/English)

Education

Degree in computer science or software engineering

Tools

Maven

Gradle

JUnit

Docker

Kubernetes

Job description

Sigma Technology Digital Solutions in Gothenburg is growing and we are looking for experienced fullstack developers who are equally comfortable designing a robust Java backend and building a modern, well structured React frontend. You will work in cloud native environments on AWS, in close collaboration with architects, product owners and other developers.

As a consultant with Sigma Technology Digital Solutions you will work in assignments at some of the most interesting companies in western Sweden, within automotive, industry, defense, mobility and the public sector. Assignments typically run over a longer period, which gives you the chance to really get to know the domain, the codebase and the people you work with. Between and during assignments you have a permanent employment with us, a dedicated manager and a community of colleagues to grow with.

What you will do

• Design, build and maintain backend services in Java, typically with Spring Boot, REST APIs and relational or document databases
• Build user facing applications in React and TypeScript, with focus on maintainability, performance and a great user experience
• Work with cloud infrastructure on AWS, for example ECS/EKS, Lambda, S3, RDS, API Gateway and IAM
• Contribute to CI/CD pipelines, automated testing and quality work
• Take part in technical discussions, architecture decisions and code reviews, and share what you know with the rest of the team
• Act as a trusted advisor towards the client

Please note that we are hiring for a permanent position. We are not considering subcontractors, freelancers or applications from other consultancy firms for this role.

We care as much about how you work as what you know. The developers who thrive with us are curious, take ownership of what they deliver and are comfortable asking questions when something is unclear. You enjoy working close to the business and can explain technical trade offs to people who are not developers. You want to keep learning, and you are happy to help others do the same.

• We are looking for someone who has
• At least 6 years of professional experience in software development
• Strong skills in Java and the surrounding ecosystem, for example Spring Boot, Maven or Gradle, JUnit
• Solid experience with React and TypeScript in production applications
• Hands on experience working in AWS, or another major cloud platform with a clear willingness to work in AWS
• Experience with Git, CI/CD and agile ways of working such as Scrum or Kanban
• A degree in computer science, software engineering or equivalent knowledge gained through work
• Good communication skills in both Swedish and English.

Preferred additional skills, personal traits and experience

• Experience with Docker, Kubernetes or infrastructure as code such as Terraform or CloudFormation
• Experience with message based architectures, for example Kafka, SQS or SNS
• Experience from regulated or safety critical environments
• Experience mentoring junior developers or leading a small team
• Experience with observability tooling, security work or performance optimization

We offer

• An employment with a competitive salary, pension plan and insurance
• Collective agreement, wellness allowance and clear terms
• An annual conference trip abroad
• The opportunity to join a growing company, influence the direction and actively contribute to the company culture
• A close relationship with your manager, with regular one to ones and a real career plan
• Long term assignments at well known clients
• Competence development through internal networks and projects
• Colleagues who like what they do, and social activities that are actually worth showing up to

2026-09-14

2026-10-03

Contact

Martin Samuelsson, [e-mail], [phone]