Software Engineer - Europe/UK

Department: Engineering

Location: Western Europe (CET), Portugal, United Kingdom

Employment Type: FullTime

At Obsidian Systems, we’re not your typical software consultancy. Since 2014, we’ve been building unusually high-quality software by combining the best tools from both industry and academia. From functional programming and static analysis to distributed ledger technologies and AI, we stay at the cutting edge—not just for the sake of novelty, but because it helps our clients gain a true strategic edge.

We’re a team of engineers who value rigor, creativity, and curiosity. If you’re passionate about solving hard problems with elegant code, you’ll fit right in.

What You’ll Do

As a Software Engineer at Obsidian, you’ll work on challenging projects across diverse domains—fintech, blockchain, AI, data science, and more. You’ll collaborate with a fully remote, distributed team of experts to design and build software systems that are robust, scalable, and impactful.

Your work will involve:

• Designing and developing new applications and systems

• Writing clean, testable, and well-documented code

• Participating in thoughtful code reviews and architecture discussions

• Debugging, optimizing, and improving existing systems

• Contributing to testing, CI/CD, and deployment processes

• Exploring new technologies and applying them to real-world problems

Who You Are

You’re not just a coder—you’re a craftsperson who takes pride in building elegant, reliable systems. You thrive in a remote environment where initiative and clear communication matter just as much as technical skill. You have:

• 3+ years of professional software engineering experience

• Hands-on experience in one or more of the following domains: fintech, blockchain, AI, data science, open-source, enterprise software

• Documented experience in functional programming (strong preference for Haskell and/or Rust and/or the Nix Ecosystem)

• A solid grasp of system design and architecture principles

• Experience collaborating on distributed, fully remote teams

• Strong written and verbal communication skills across time zones

• Contributions to open-source functional programming projects

Why Join Obsidian Systems?

• A Learning Culture - We have a strong generalist culture, where employees are expected to study and improve themselves in skills that were initially weaker when they joined.

• Global flexibility – work fully remote from anywhere (except U.S. restricted/embargoed countries)

• Impactful work – your contributions won’t be lost in layers of management; you’ll directly shape products and solutions

• Innovative tech – work at the frontier of functional programming, AI, blockchain, and beyond

• Supportive culture – join a team that values rigor, learning, and collaboration over ego