Software Engineer - Backend Platform

We’re building something new within Evolution.

This is not a role focused on maintaining mature systems or working inside a fixed technical setup. It is an opportunity to help build a new platform from first principles, using modern backend technologies to solve hard engineering problems under real production constraints.

The system we’re building will operate across regions and process thousands of real-money transactions per second with strict consistency guarantees. Low latency, correctness, performance, and security are not things we optimise for later. They are design constraints from day one.

We are looking for software engineers who want to work close to the core of the platform: backend services, event-driven systems, databases, and performance-critical product flows.

What You’ll Work With

You will work with technologies such as:

Java

Spring Boot

Kafka

PostgreSQL

Docker

You do not need to be an expert in every technology from day one, but you should have strong backend engineering fundamentals and a serious interest in building reliable distributed systems using this type of stack.

What You’ll Do

Build backend services and platform components using Java and Spring Boot

Design and implement APIs, data models, internal tools, and product-facing systems

Work with Kafka-based event-driven architecture and high-throughput transaction flows

Build systems using PostgreSQL, where performance, correctness, and observability matter

Build services designed to run in a modern containerised environment

Contribute to technical decisions around consistency, latency, scalability, reliability, and security

Write clear, maintainable, well-tested code with a strong focus on robustness

Participate in code reviews, system design discussions, and technical trade-off decisions

Who You Are

You have strong computer science fundamentals

You are comfortable working with backend systems and databases

You can reason clearly about correctness, concurrency, performance, and system design

You are interested in distributed systems, event-driven architecture, and production-grade engineering

You learn quickly and enjoy working across different parts of the stack

You are ambitious, self-driven, and motivated to grow in a high-performing engineering environment

You want to work in a small team with high standards and direct technical feedback

What Will Strengthen Your Application

Experience with Java and Spring Boot

Experience with Kafka or other event-streaming/message-driven systems

Strong understanding of PostgreSQL or relational database design

Experience with Docker or containerised development workflows

Experience building systems where performance, correctness, reliability, or security mattered

Internship experience or a few years of software engineering experience in a technically demanding environment

Strong academic results from a rigorous technical university or program

Personal, open-source, academic, or professional projects that show technical depth and ownership

Competitive programming, hackathons, olympiads, research, or other high-signal technical achievements

Clear communication and the ability to discuss technical trade-offs thoughtfully

We’re building something new within Evolution

.

This is not a role focused on maintaining mature systems or working inside a fixed technical setup. It is an opportunity to help build a new platform from first principles, using modern backend technologies to solve hard engineering problems under real production constraints.

The system we’re building will operate across regions and process thousands of real-money transactions per second with strict consistency guarantees. Low latency, correctness, performance, and security are not things we optimise for later. They are design constraints from day one.

We are looking for software engineers who want to work close to the core of the platform: backend services, event-driven systems, databases, and performance-critical product flows.

Our benefits are

Competitive pension, health and medical insurance

30 paid vacation days

Fitness benefit (Friskvårdsbidrag)

Professional growth

Sport activities, parties, team buildings

This is a 100% on-site position. Based in Stockholm, Sweden.