Senior Backend Developer – Java & Modern Technologies

Stack

Responsibilities

• ▹AI: agents, LLM, RAG, MCP and internal LLM models
• ▹Design and development of scalable backend solutions
• ▹APIs, integrations and microservices
• ▹System architecture and technical choices
• ▹Container-based and cloud-based environments
• ▹Event-driven and distributed systems
• ▹Code review, testing and quality assurance
• ▹CI/CD and automated development flows
• ▹Agile ways of working and close collaboration with developers, architects, product owners and other stakeholders
• ▹AI-based tools as a natural part of the development process

Requirements

• ▹Several years of professional experience in backend and system development
• ▹At least 4 years working with several of the following: Java, Spring, Spring Boot, REST API, microservices, Kafka or other event and messaging platforms, Docker, Kubernetes, AWS, Azure or another cloud platform, SQL and NoSQL databases, Git, CI/CD, Python, Node.js, DevOps, test automation, agile methods, Scrum
• ▹Solid experience of Java
• ▹Used to modern frameworks, tools and development methods
• ▹Understands the importance of quality, security, performance and scalability
• ▹Can take responsibility for technical solutions from idea to production
• ▹Experience of using AI in development

Soft skills

What we offer

• ▹Freedom with responsibility and knowledge sharing
• ▹Regular social activities, events and shared adventures, plus an annual trip abroad together
• ▹Technically exciting environments with skilled colleagues and clients

About the company

Sigma is a technology consultancy that is expanding in Blekinge and works on technically complex client assignments with skilled colleagues and clients.