Hand-curated positions in niche programming languages
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New York, NY, USA
Production Engineer building and supporting critical trading systems. OCaml with infrastructure monitoring and incident resolution, splitting time between software development and support rotations.
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.
Remote
Staff/Principal Software Engineer building AI-powered workflows for financial advisors. Elixir with LiveView, PostgreSQL, and Google Cloud with Terraform and Kubernetes, focusing on scalable systems, clean architecture, and feature delivery.
Stockholm, Sweden
Senior Erlang Engineer building highly scalable and resilient backend systems for Klarna's core payment infrastructure with Erlang, Elixir, and OTP, focusing on distributed systems, concurrency, fault-tolerant design, and system reliability.
Birmingham, England, UK | Leeds, England, UK | London, England, UK | Manchester, England, UK
Senior Data Engineer implementing Quantexa-based solutions for financial services. Spark and Scala with Python and Databricks, focusing on data ingestion, Entity Resolution, and ETL pipelines.
Aberdeen, Scotland, UK | Birmingham, England, UK | Bristol, England, UK | Cambridge, England, UK | Cardiff, Wales, UK | Edinburgh, Scotland, UK | Glasgow, Scotland, UK | London, England, UK | Manchester, England, UK | Newcastle upon Tyne, England, UK | Nottingham, England, UK | Watford, England, UK
Quantexa Senior Manager Tech Lead leading end-to-end Quantexa implementations, designing entity resolution and network generation solutions, and acting as primary technical interface for clients using Scala, Spark, and ElasticSearch while focusing on data modeling, scoring frameworks, and production deployment.
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).
Birmingham, England, UK | London, England, UK | Manchester, England, UK | Leeds, England, UK
Quantexa Data Engineer designing and delivering high-quality Quantexa solutions with Spark and Scala, developing ingestion pipelines and configuring Entity Resolution, Scoring, and Network Generation, while collaborating with architects and client stakeholders to address complex business challenges.
Fremont, CA, USA
Embedded Software Engineer designing and developing software control systems for semiconductor manufacturing equipment. Using C/C++, Java, Python, Smalltalk, and object-oriented design with real-time operating systems and distributed systems.
Bristol, England, UK | Cheltenham, England, UK
Senior Embedded Software Developer designing and delivering operational tooling with C, C++, Rust, and Python for ESP32 and ARM platforms, focusing on real-time constraints, low-level interfacing, and mentoring junior engineers.
Whiteley, England, UK
Senior Software Engineer developing and sustaining safety-critical, real-time Air Traffic Control systems with Ada, C++, and Linux/Unix, focusing on full lifecycle delivery, integration, verification, and technical leadership within an Air Traffic Management programme.
Dortmund, Germany
Web Developer building modern, performant, and user-friendly web interfaces for cloud platforms in the energy sector using Vue.js, TypeScript, Elixir, and Phoenix with Inertia.js, focusing on interactive dashboards, data visualization, and agile collaboration from conception to rollout.
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, Portugal
Backend Software Developer building IoT water-saving solutions for smart homes. Elixir with PostgreSQL, TimescaleDB, GraphQL, and AWS, focusing on scalable backend systems, data pipelines, and IoT integration.
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.
Pune, India
Server Engineer building and running large-scale distributed systems for telecom platforms. Using TypeScript, Scala, and Lua to improve reliability, observability, and automation across mission-critical services.
Belgrade, Serbia
Back-End Engineer building scalable, secure web services for telecom platforms. Using Node.js, Lua, and Scala to handle millions of concurrent API calls in distributed systems.
Pune, India
Back-End Engineer building secure, scalable web services for telecom platforms. Using Node.js, Lua, and Scala to handle millions of concurrent API calls in distributed systems.
Remote, Mexico | Belgrade, Serbia | Toronto, Canada
Senior Back-End Engineer building digital commerce and monetization platform for telecommunications. Node.js, Lua, Scala, and distributed systems, focusing on secure, scalable web services, RESTful APIs, concurrency, and data modeling.
Cambridge, England, UK
Senior or Principal Rust Engineer developing open-source silicon and RISC-V systems. Rust with C, LLVM, and embedded OS, focusing on firmware, drivers, software security, compilers, simulators, and cloud infrastructure.
San Francisco, CA, USA
Senior Product Engineer building an AI-native hospital information system. Using Elixir, Erlang, and modern cloud architecture to handle real-time clinical data in mission-critical healthcare environments.
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.
Stevenage, England, UK
Senior software engineer for test systems. Develop C/C++/Ada code for mission-critical validation tools. UK citizenship required.
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.
Remote
Remote engineering manager role leading cross-functional teams. Requires frontend (React/TypeScript) or Clojure background, strong product sense, and 2+ years management experience. Focus on async collaboration, iteration speed, and team growth.
Remote
Remote backend engineer working in Clojure/JavaScript. Build major features and tackle complex backend problems. CS background required. Bonus: JDBC, JVM tuning, ML, or big data experience.