Senior Backend Engineer | Routing Team

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. Instabee Group, with consumer-facing brands Budbee, Instabox, and Porterbuddy, brings together years of experience in delivery. Today, Instabee Group is present in five markets, serving thousands of online merchants and millions of consumers with seamless home deliveries and convenient parcel locker deliveries, using the best fuel available. With smart technology, a strong focus on sustainability, and a secure supply chain, Instabee has become a trusted partner for online merchants and a preferred choice for consumers.