Senior Java Fullstack Developer

Sigma Technology; Göteborgs kommun; On-site; SEK 750,000 - 1,100,000; Full time

Benefits offered by this job

Competitive salary

Pension plan

Insurance

Annual conference trip abroad

Career plan and growth

Strong manager relationship

Long-term client assignments

Internal training and networks

Social activities

Job summary

Sigma Technology Digital Solutions in Gothenburg is seeking experienced full-stack developers to design robust Java backends and modern React frontends. You will work in AWS cloud environments and collaborate with architects, product owners and teammates.

This is a permanent position with Sigma Technology Digital Solutions in Sweden, focusing on long-term client assignments. We value ownership, curiosity and clear communication in both Swedish and English, and offer career development, strong

Qualifications

• 6+ years of professional software development experience.
• Strong Java backend with Spring Boot and build tools (Maven/Gradle).
• Proven React and TypeScript experience in production apps.
• Hands-on AWS experience and Git/CI/CD in agile teams.
• Fluent Swedish and English communication.

Responsibilities

• Design, build and maintain Java backend services and REST APIs.
• Develop React frontends with focus on performance and UX.
• Work in cloud native AWS environments and collaborate with architects.
• Participate in CI/CD, testing, code reviews and architecture decisions.
• Act as trusted advisor to clients and share knowledge with team.

Skills

6+ years experience

Java

Spring Boot

Maven/Gradle

JUnit

React

TypeScript

AWS

Git

CI/CD

Agile (Scrum/Kanban)

Swedish & English

Education

Degree in computer science or software engineering

Tools

Docker

Kubernetes

Terraform

CloudFormation

Kafka

SQS

SNS

AWS services (ECS/EKS, Lambda, S3, RDS, API Gateway, IAM)

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.

Basic Qualifications

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, 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