Senior Backend Engineer - AI-Driven Microservices

Kaisa Technologies AB; Uppsala kommun; On-site; SEK 900,000 - 1,300,000; Full time

Job summary

Kaisa Technologies AB in Sweden (Uppsala) is seeking a Senior Software Engineer to design, build, and evolve scalable backend services and APIs. You will work with Product and Engineering to translate business needs into robust technical solutions as we grow.

You will explore AI capabilities, including LLM-based workflows, and mentor engineers while maintaining a collaborative, results-driven culture. This role is based in Uppsala with hands-on cloud & backend work.

Qualifications

• 5+ years of backend software development with a focus on scalable architectures.
• Strong Node.js and TypeScript backend experience.
• Designing, building, and scaling distributed microservices and APIs.
• Experience working with AI agents and integrating LLM-based workflows into production.
• Hands-on experience with AWS, Terraform, and automated CI/CD pipelines.
• Proficient with SQL and NoSQL databases (e.g., MySQL, DynamoDB, Redis).
• Experience with Python or PHP is a plus.
• Degree in Computer Science, AI, Machine Learning or similar or equivalent experience.
• Proactive and collaborative; capable of mentoring others.
• Excellent communication across technical and non-technical teams.

Responsibilities

• Design, build, and evolve scalable backend services, APIs, and event-driven systems.
• Contribute to architectural decisions and improve system quality and scalability.
• Collaborate with Product to turn business needs into technical solutions.
• Explore and integrate AI capabilities and AI tooling into production.
• Mentor engineers and foster a collaborative, high-performing team.

Skills

Node.js

TypeScript

Architecture & Microservices

AI & LLMs

Cloud & Infrastructure

Database Management

AI Development Tools

Python

PHP

Leadership & Mentorship

Ownership & Initiative

Clarity & Communication

Agile Collaboration

Education

Bachelor's degree in CS or related field

Tools

AWS

Terraform

CI/CD pipelines

Job description

Kaisa Technologies AB in Sweden (Uppsala) is seeking a Senior Software Engineer to design, build, and evolve scalable backend services and APIs. You will work with Product and Engineering to translate business needs into robust technical solutions as we grow.

You will explore AI capabilities, including LLM-based workflows, and mentor engineers while maintaining a collaborative, results-driven culture. This role is based in Uppsala with hands-on cloud & backend work.