Senior Backend Engineer | Routing Team

Instabee Group AB; Stockholms kommun; Hybrid; SEK 900,000 - 1,200,000; Full time

Benefits offered by this job

Stockholm office

Dog-friendly office

Games room

Flexible hybrid hours

Parental pay top-up

Birthday day off

Job summary

Instabee Group AB is hiring a Senior Backend Engineer to design, build, and ship backend features that impact delivery efficiency across Sweden. You’ll modernize legacy services into scalable Go-based architecture and drive clean, maintainable code.

Collaborate with Product to turn tech work into KPI impact. You will mentor engineers and help shape a strong technical culture while owning end-to-end backend work in a hybrid, collaborative team.

Qualifications

• Hands-on Go experience in production environments.
• Designing and scaling distributed cloud APIs (GCP/AWS).
• Familiar with Kubernetes/Helm, Terraform, and SQL.
• Proactive in preventing incidents and improving reliability.
• Ability to give and receive feedback in a collaborative team.
• Care about how code lands in production and in customer routes.
• Bonus: experience modernizing legacy stacks.

Responsibilities

• Design, build, and ship backend features end-to-end.
• Modernize legacy Java/Node services into Go-based architecture.
• Set standards for clean, maintainable, documented code.
• Partner with Product to translate Tech into KPI impact.
• Lead incident response and implement long-term fixes.
• Mentor engineers and help shape technical culture.

Skills

Go

Distributed systems

Cloud APIs

Kubernetes

Terraform

SQL

Go production

Code quality

Problem solving

Feedback culture

Tools

GCP

AWS

PostgreSQL

MongoDB

Kubernetes (Helm)

Terraform

GitHub Actions

Grafana

Job description

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 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.

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.