Senior Backend Engineer (Agent Lead)

Salary DKK 50,000 - DKK 65,000

Equity To be negotiated

Work at Devin

At Devin, you’ll join a funded, product-focused startup entering its Go-to-Market stage with real customers, revenue, and a unique position inside the Apple enterprise ecosystem. Our platform is being developed in close collaboration with Claris (Apple’s subsidiary), giving you exposure to one of the most influential tech companies in the world—through engineering conversations, product reviews, and meetings with executives.

We work on hard technical problems with a clear purpose: building foundational DevOps technology for a massive global user base that has never had modern tools. The systems you build here won’t be “internal tools” — they’re shaping a category that is likely to become a part of Apple’s enterprise platform strategy.

Our office is a proper startup environment:

• brand new hardware and equipment

• modern, spacious office in a central location

• a tight-knit team working side-by-side

• Friday bars, team dinners, and spontaneous celebrations

• opportunities to participate in conferences around Europe and the US

• trips to Apple campuses in Texas and Silicon Valley for partner meetings and technical alignment

This is a rare chance to join early, take ownership, and help build a technology that may soon become part of the backbone of a globally deployed Apple ecosystem.

About Devin

Devin is modernizing the DevOps landscape for a long-standing Apple-connected ecosystem used in large enterprises globally. To support this, we’re building a distributed network of system-level agents that run on servers and cloud infrastructure, orchestrating everything from diff generation to automated deployments.

This layer is mission-critical: it is the runtime environment that executes all of Devin’s core workflows. It will eventually operate across thousands of managed servers and cloud instances inside the Apple enterprise ecosystem.

We have paying customers, strong inbound demand, and a close engineering relationship with Claris (Apple).

This is an ideal role for an experienced engineer who wants to architect foundational infrastructure that may ultimately integrate into Apple’s broader cloud environment.

The Role

As Agent Lead, you will take full ownership of designing, building, and evolving the agent architecture that runs Devin 2.0.

Your responsibilities will include:

Implementing robust, headless system agents for Linux and Windows Server
Building OS-level services (systemd units, Windows Services) and ensuring reliability, concurrency, and failover
Architecting the distributed communication layer between agents and the central Devin server
Handling low-level file operations, permissions, process orchestration, and task scheduling
Designing agent behavior that works seamlessly across both on-premise systems and modern cloud-hosted environments
Creating CI pipelines for multi-OS, multi-architecture agent builds
Ensuring security, stability, concurrency, and high performance across diverse environments
Working closely with our founder on long-term architecture decisions that align with Apple ecosystem integrations

Who You Are

You have strong experience building system services (Python and/or other languages)
You understand OS internals: permissions, threading, process lifecycle management, file systems
You’ve built or maintained distributed agents, daemons, or background services
You know how to design reliable multi-platform software (Linux and Windows)
You have experience with cloud-oriented service patterns
You enjoy designing systems that need to be stable, predictable, and secure in real-world environments
You’re excited by the idea of helping shape technology intended to integrate into an Apple cloud ecosystem

What We Offer

Ownership of one of Devin’s most important technical components
A close, engineering-driven culture with strong focus on impact
Competitive salary with real decision-making influence
A modern, spacious, fully equipped startup office
Direct collaboration with Apple/Claris engineering leaders
Conferences + field trips in Europe and the US
A role with long-term strategic relevance to Apple’s enterprise platform direction

For more information or questions please contact us at david@devin.fm

Perks and benefits

This job comes with several perks and benefits

Near public transit

Free office snacks

Pension plan

Social gatherings

Equity package

New tech gear

See all 15 benefits

Working at
Devin

See company profile

At Devin ApS we're building the first real DevOps platform for Claris FileMaker, Apple’s long-running low-code ecosystem used inside thousands of enterprises—including Apple itself, Coca-Cola, Samsung, the US Navy, banks, airports, hospitals, and countless internal teams that need custom workflows. And yes: FileMaker is a bit of a strange, legacy-feeling technology from a modern engineering point of view. It stores entire applications—schema, logic, UI, permissions—inside a proprietary binary file format that cannot be versioned or inspected. No Git. No diffs. No real CI/CD. Most teams still build features directly in production because they simply have no choice. That’s exactly why Devin exists. We’re taking a platform with huge real-world usage but decades of technical debt, and building the tooling it has never had: true version control, merge, diff, test automation, safe deployments, and server-side orchestration. Not by patching workflows around the edges, but by breaking open the internal structure of the .fmp12 format and building the equivalent of Git, GitHub Actions, and Release Management for a low-code ecosystem that has been stuck in 2005. Our work includes: • Building a high-performance XML analysis layer capable of reading and comparing the hidden catalogs inside .fmp12 files • Generating and applying patch files through Claris’ CLI to achieve true merge and conflict resolution • Designing a distributed backend (Devin Server 2.0) that runs on-prem and cloud, powering version control, test automation, deployments, and data migrations • Creating a modern DevOps workflow on top of a platform that was never designed for one This is deeply technical, state-of-the-art work involving parsing, schema design, distributed systems, performance engineering, and creating entirely new abstractions that will become the standard for 25,000+ FileMaker developers worldwide. You do not need any FileMaker experience—zero, genuinely. Think of FileMaker as a domain with a massive impact footprint but almost no modern tooling. Our founder, David, is one of the world’s leading experts on the platform and maintains close relationships with Claris’ engineering leadership (CEO, VP Product, VP Engineering). You will work in a modern stack, while he covers everything domain-specific. We’ve proven commercial demand with Devin 1.0, secured angel funding, and are now expanding the team to build the breakthrough technologies behind Devin 2.0. You’ll join as part of the early technical core: a small, ambitious team working on hard engineering problems with real user impact, strong support from Claris, and direct visibility inside a niche Apple ecosystem. It’s a rare chance to build something genuinely new—almost “Git for a platform that never had Git”—and define a category in a space that is both weird and surprisingly important. We’re currently moving into a new fantastic office space — photos are coming!