Senior Backend Engineer (Agent Lead)

Salary DKK 45,000 - DKK 60,000
Equity To be negotiated

About Devin

Devin is building the first real DevOps platform for Claris FileMaker, a longstanding Apple-associated ecosystem used across 70,000+ companies. Because FileMaker stores entire applications inside a proprietary binary file format (.fmp12), no proper version control has ever existed.

We’re changing that.

Our engineering team is developing the deeply technical infrastructure needed to extract, structure, compare, and interpret the hidden XML catalogs inside these files—making real version control, automation, and collaboration possible for the first time.

You don’t need any FileMaker experience. This work is about building a distributed system of system-level agents that run across on-prem environments and cloud infrastructures — orchestrating everything from diff generation to safe automated deployments. This agent layer is mission-critical: it powers all of Devin’s core workflows and is on track to run across thousands of servers and cloud environments inside an expanding Apple enterprise ecosystem.

We’re a funded startup moving out of R&D and into our Go-to-Market phase. We already have paying customers, growing demand, and a close technical relationship with Claris (Apple). The systems you'll build here have a clear path toward integration inside future Apple-aligned cloud environments.

At Devin, you won’t be one of dozens of engineers — you’ll be one of the first. We’re a small, high-trust, founder-led team where ownership is real, shipping matters, and you directly influence product, architecture, and culture. Startup life means high autonomy, big responsibility, and the occasional late night — balanced by an energized, social environment with Friday bars, team events, conference trips in the EU and US, as well as occasional visits and meetings with Apple executives at Apple campuses in Texas and Sillicon Valley.

If you want to architect foundational infrastructure, work closely with the founder, and help shape a technology that may become part of Apple’s enterprise platform strategy, this is the role for you.


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 Devin agents and Claris CLIs and APIs

  • 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-level services (Python and/or similar languages)

  • You understand OS internals: permissions, process lifecycle, concurrency, file systems

  • You’ve built or maintained distributed agents, daemons, or background services

  • You know how to design reliable, multi-platform software running on both Linux and Windows

  • You have experience with cloud-oriented service patterns and distributed task orchestration

  • You enjoy designing systems that must be stable, predictable, and secure in real-world enterprise environments

  • You’re excited by the opportunity to build technology intended to integrate into an Apple cloud ecosystem

  • You want to be part of a small, highly focused team, especially in the early stage where everyone’s work directly shapes the product

  • You enjoy working in-person with colleagues — pair debugging, whiteboard sessions, team strategy discussions

  • You’re comfortable with macOS and you like being inside the Apple developer environment

  • You appreciate the startup lifestyle: high autonomy, big responsibility, and the occasional long day when we’re pushing toward major milestones

  • You want a culture where hard work is rewarded with a strong team spirit: Friday bars, dinners, trips, and a genuinely social office atmosphere

  • You want to be a founding engineer — someone who helps set culture, standards, architecture, and long-term direction


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

  • Conferences trips in Europe and the US

  • Potential meetings at Apple campuses in Texas and Sillicon Valley

  • 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
Near public transit

Free office snacks
Free office snacks

Social gatherings
Social gatherings

Equity package
Equity package

New tech gear
New tech gear

Central office
Central office

See all 12 benefits

Working at
Devin

Vi bygger den første ægte DevOps-platform til Claris FileMaker. Hos Devin ApS er vi på en mission for at revolutionere et økosystem, der bruges af tusindvis af virksomheder verden over. Vi bygger den første rigtige DevOps-platform til Claris FileMaker—Apples mangeårige low-code økosystem, der driver kritiske workflows hos giganter som Apple selv, Coca-Cola, Samsung, den amerikanske flåde, samt utallige banker, lufthavne og hospitaler. Vi står over for en unik og spændende udfordring. FileMaker er, set med moderne ingeniør-briller, en lidt speciel størrelse. Det gemmer hele applikationer—database, logik, UI og rettigheder (alt)—i et proprietært binært filformat. Konsekvensen? Ingen versionsstyring. Ingen git. Ingen reel CI/CD. De fleste teams bygger stadig features direkte i produktionsmiljøet, simpelthen fordi de ikke har haft andre muligheder. Det er præcis derfor, Devin eksisterer. Vi tager en platform med enorm global udbredelse, men årtiers teknisk gæld, og bygger de værktøjer, den aldrig har haft. Vi skaber fremtiden for professionel udvikling i et økosystem, der har ventet på det i årevis. Dette er ikke bare en simpel integrationsopgave, det er State-of-the-Art Teknologi. Det er dybt teknisk, innovativt arbejde, der kræver præcision og vision. Vi arbejder med: System Services & Distribuerede Systemer: Vi bygger infrastrukturen, der får det hele til at hænge sammen. Data Architecture: Vi gentænker, hvordan data struktureres og håndteres i et legacy-miljø. Performance Engineering: Vi optimerer for hastighed og stabilitet i komplekse systemer. Nye Abstraktioner: Vi skaber de standarder, som 25.000+ FileMaker-udviklere verden over kommer til at bruge i fremtiden. Du behøver ingen erfaring med FileMaker—seriøst, nul. Betragt FileMaker som et domæne med et massivt fodaftryk, men næsten ingen moderne værktøjer. Vores stifter, David, er en af verdens førende eksperter på platformen og har tætte relationer til Claris' engineering leadership. Mens du arbejder i en moderne tech-stack og løser hårde ingeniør-problemer, dækker han alt det domænespecifikke. Vi har allerede bevist, at behovet er der. Med Devin 1.0 har vi valideret markedet, vi har sikret angel-funding, og vi er nu klar til næste kapitel: At genopbygge og skalere vores platform fra bunden til fremtiden. Når du bliver en del af Devin, træder du ind i den tekniske kerne af teamet. Vi er et lille, ambitiøst hold, hvor ejerskab og autonomi ikke bare er buzzwords, men fundamentet for vores arbejde. Direkte Indflydelse: Du bliver en del af et "founder-led" miljø, hvor dine beslutninger former produktet. Stærkt Netværk: Du får direkte synlighed i et niche-Apple-økosystem med stærk opbakning fra Claris. Ægte Innovation: Det er en sjælden chance for at bygge noget reelt nyt—næsten som at opfinde "Git for en platform, der aldrig havde Git". Vi flytter snart ind i nye, moderne kontorlokaler (derfor ingen billeder endnu 😊), og vi glæder os til at byde dig velkommen på rejsen. Er du klar til at bygge fundamentet? Hvis du motiveres af komplekse arkitektoniske udfordringer og vil være med til at definere standarden i et vigtigt, men overset marked, så er Devin stedet for dig. Vi tilbyder muligheden for at vokse sammen med os, lede teknologiske gennembrud og sætte dit præg på fremtidens DevOps for mange af verdens største virksomheder.

Read more about Devin

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