Senior Backend Engineer

The challenge

Every day, thousands of parcels need to find the fastest, cheapest, most accurate route to someone's door — across Sweden and beyond. That's a Traveling Salesman Problem at massive scale, and it's what the Routing Team solves, live, in production.

As a Senior Backend Engineer, your code doesn't sit in a backlog. It ships, and the next day it's already changing distribution costs, delivery accuracy, and the experience of thousands of customers.

The team

You'll join a small, senior, highly collaborative squad: three backend developers, one frontend developer, two algorithm engineers, one ML engineer, an Engineering Manager, a Product Manager, and a Staff Engineer. Low cross-team dependencies mean you can actually drive projects from idea to production — fast.

Tech stack

🐹 Backend

Golang (primary), with legacy Java and Node.js

🖥️ Frontend

React + Next.js

🗄️ Data

PostgreSQL, MongoDB

☁️ Infra

GCP, Kubernetes (Helm), Terraform

🔁 CI/CD & Observability

GitHub Actions, Grafana

What you'll own

• Design, build, and ship backend features end-to-end — including proposing the projects worth building

• Modernize legacy services (Java/Node) into scalable Go-based architecture

• Set the bar for clean, maintainable, well-documented code

• Partner with Product to turn technical solutions into KPI impact

• Lead incident response and turn root causes into long-term fixes

• Mentor engineers and help shape a strong technical culture

What we're looking for

• Solid, hands-on experience with Go (or another strongly-typed language) in production

• A track record of designing and scaling distributed systems/APIs in the cloud — GCP or AWS

• Comfortable with Kubernetes/Helm, Terraform, and SQL

• You raise problems before they become incidents, and you help fix them

• You make sound decisions under ambiguity, and you enjoy giving/getting feedback

• You care where your code actually lands — in a truck, on a route, at someone's door

• Bonus: you've worked across legacy stacks and enjoy bringing old systems up to modern standards.

Why this role

• Real-world impact, fast. Your work reaches thousands of people daily — not after a year of roadmap, but this quarter.

• See it in action. Visit our sorting terminals, ride along with a delivery driver, or shadow ops for a day — build with real context, not assumptions.

• Build, don't just maintain. Regular Hack Days let you take an idea from proof-of-concept to production.

• Tools that keep up with you. Paid licenses for IDEs and AI coding agents.

• Grow with modern tech, without being cut off from where it came from — you'll touch legacy systems too, and get to fix them properly.

Perks

🏢 Newly renovated office with a 360° view over Stockholm

🐶 Dog-friendly, with a floor for your furry coworker

🏓 Ping pong, shuffleboard, foosball, karaoke room

⏰ Flexible hybrid hours

👶 6 months of parental pay top-up

🎂 A day off on your birthday

We're committed to building an inclusive team where different perspectives are valued and everyone has room to grow.

This role requires a background check via Svensk Bakgrundsanalys, which includes a review of public criminal records. The results are handled confidentially as part of our standard recruitment process in Sweden.

Ready to make thousands of routes a little smarter every day? Apply below — we'd love to hear from you.