Hand-curated positions in niche programming languages
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Budapest, Hungary
Remote F# web developer role focused on full-stack projects using ASP.NET Core and WebSharper. Requires solid grasp of sitelets, pagelets, and proxying. All experience levels welcome.
New York City, NY, USA
Software engineer role using OCaml and Python to build trading and research systems. Requires strong programming skills and collaborative mindset; no finance or FP experience needed.
New York, NY, USA
Work on OCaml language design, optimization, and tooling. Focus on compiler performance, new language features, and open-source contributions. Requires experience in industrial-strength language implementation. No OCaml background needed.
Jersey City, NJ, USA
Software Engineer III building secure, scalable cloud systems on AWS. Work with Scala, Python and big-data platforms, delivering distributed services, automation and CI/CD within an agile enterprise engineering team.
São Paulo, Brazil
Build and scale mission-critical Pix payment flows and high-availability fintech infrastructure using Haskell and functional programming at a $1 trillion TPV scale.
Los Angeles, CA, USA
Architect and develop real-time, fault-tolerant flight software in Rust to control the propulsion, power, and guidance systems of high-power, heavy-lift satellite platforms.
Remote
Build and optimize high-performance, full-stack trading interfaces and backend APIs using React and Rust to deliver data-intensive financial products and analytics dashboards.
Remote
Build and maintain high-performance, cloud-native trading data platforms and back-office systems using Rust to integrate live exchange operations with scalable financial infrastructure.
Remote
Lead the technical execution and architecture of high-concurrency, low-latency market-making systems by balancing hands-on Rust engineering with mentorship and cross-functional delivery alignment.
Shanghai, China
Design and optimize high-performance, asynchronous Rust-based proxying and load-balancing features for a globally distributed, open-source API gateway.
Various locations, Germany
Senior software developer role building distributed .NET systems in C#/F#. Focus on cloud (Azure), DevOps, testing, and UI/UX (Angular, ASP.NET).
Vancouver, BC, Canada
Join the research team to develop high-performance, secure, and scalable systems advancing blockchain interoperability. Requires 2+ years experience in systems programming with a strong focus on Rust, and experience with AWS services.
Paris, France
Build and scale highly available backend services using Scala and the Typelevel stack to power secure digital asset management and hardware wallet ecosystems.
Dortmund, Germany
Full-time Elixir role developing scalable cloud systems for the energy sector. Requires Elixir/Erlang, messaging (AMQP/MQTT), and cloud experience.
Luton, England, UK
Lead Embedded Software Engineer delivering real-time Ada systems. Oversee design, integration, and mentoring across multidisciplinary teams. Background in embedded or safety-critical software (RTCA-DO178C). Training in Ada provided.
Paris, France
Software Engineer building frontend, backend, and infrastructure for financial derivatives and structured products. Heavy OCaml stack, core libraries and services, cloud-hosted deployments, reliability and tooling, collaborating with quant teams on pricing models.
Remote
Actuarial Developer building financial advice and modeling tools on a fintech platform. Clojure-centric stack with ClojureScript and TypeScript frontends, integrating actuarial models, data analysis, and risk calculations.
Rüsselsheim, Germany
Software Developer maintaining and modernising a laboratory information system. Fortran-heavy stack with PostgreSQL, Linux migration, device integrations, data validation, and legacy system support in a quality-critical healthcare environment.
Huntsville, AL, USA
Staff Systems Engineer developing and evaluating missile defense threat-state algorithms. MATLAB and Python prototyping, Ada codebase integration, agile delivery, algorithm analysis, and system updates within a large-scale defense software system.
Remote
Senior Systems Engineer designing a modular runtime for decentralised nodes. Systems programming in C, C++, Rust, and Nim, focusing on IPC optimisation, isolation, fault tolerance, and scalable blockchain, messaging, and storage modules.
Remote
Software Engineer building a large-scale supply chain optimization platform. C#, F#, TypeScript, and .NET on Azure, tackling compilers, distributed computing, event sourcing, storage, and machine learning for high-performance industrial systems.
Krakow, Poland
Lead Scala Engineer guiding backend development of a real-time ad exchange handling massive scale. Oversee Scala to Java migration, mentor engineers, and drive distributed system design in AdTech.
Krakow, Poland
Senior Scala Engineer building low-latency, high-traffic ad exchange systems processing 200B+ requests monthly. Functional Scala, MongoDB, Protocol Buffers, Kafka, AWS/GCP.
Newcastle, England, UK | London, England, UK | San Francisco, CA, USA
Staff Software Engineer building a next-generation, AI-native hospital information system. Elixir, Erlang, and Phoenix on a modern cloud-native stack, tackling real-time data distribution, fault-tolerant system design, clinical hardware integration, and fine-grained access control for mission-critical healthcare environments.
Konstanz, Germany
Senior ML/NLP Developer role improving email automation pipelines using Scala, ML, and NLP. Bonus for Spark and DB experience. On-site in Konstanz, 70–100% workload, small startup environment.
New York, NY, USA
Join the Database team to design, implement, and maintain critical parts of the Materialize real-time data platform in Rust. Requires 3+ years systems-level software experience, strong programming fundamentals, and a strong interest in learning/using Rust.
Stevenage, England, UK
Senior software engineer for test systems. Develop C/C++/Ada code for mission-critical validation tools. UK citizenship required.
Stevenage, England, UK
Embedded ADA Software Engineer developing real-time datalink systems for missile and platform communications. Ada on embedded targets with FreeRTOS, specializing in hard real-time software, communication protocols, and full lifecycle development within defense engineering.
Freiburg im Breisgau, Germany
Haskell engineer role designing backend/frontend systems with STM, Conduits, and reactive data processing. Build distributed algorithms for real-time sync across devices. Emphasis on functional purity, profiling, and production delivery.
San Francisco, CA, USA | New York, NY, USA | Portland, OR, USA | Remote, Canada | Remote, USA
Senior Backend Engineer developing a modern banking platform for startups, specializing in product-centric backend systems with Haskell and SQL, focusing on architectural design, system ownership, and cross-functional collaboration to build scalable financial technology.