Senior Backend Engineer to Oplane

The Story

With AI tools accelerating how software is built, code is being shipped faster than ever before. This acceleration comes with a major catch, being architectural and security risks are accumulating just as fast.

That’s where Oplane, a Malmö-based tech startup comes in. They are on a mission to make secure software the default for teams building at AI speed. Instead of patching things up afterwards, they embed security by design directly into the agentic workflow, running automated threat modeling and delivering real time, inline fixes straight into modern developer tools.

A recent $5.2 million seed round led by Seed Capital and icebreaker vc, with backing from prominent tech investors from the Neo4j and Google ecosystems, is the direct driver behind expanding the engineering team right now.

The Way They Build

Agentic coding with Claude Code and Cursor is not a weekend experiment here, it is the core of how they ship software. The code is explicitly structured to optimize AI development, producing clear, modular architecture that both humans and AI agents can safely navigate and evolve.

Your Mission & Impact

As a Senior Backend Engineer, you will step in at a crucial early stage to design, build, and own the core infrastructure of the AI security platform. The job is to turn complex technical challenges into a scalable automated threat modeling engine, robust backend services, and Model Context Protocol (MCP) tools that power both the AI agents and the web application.

What you will actually spend your days doing:

Core Engineering: Architect and scale robust backend services and asynchronous workflows primarily in Python.

AI Integration: Design and build MCP tools and internal agent facing functionalities to push the boundaries of agentic coding.

System Optimization: Continuously improve performance, security, and reliability across the entire backend stack.

Lead the AI Workflow: Work actively with Claude Code and Cursor as part of your daily routine.