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Hand-curated positions in niche programming languages

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Showing 31-60 of 125

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Cobol Application Developer

Deutsche WertpapierService Bank
Senior+
🇩🇪

Frankfurt am Main, Germany | Düsseldorf, Germany

COBOL Developer building settlement and depot transfer systems, migrating mainframe applications to microservices architecture. Requires strong COBOL and DB2 experience with mainframe development. German (C1) and English (B2) required.

COBOL
Verified May 24, 2026 View listing

Backend Software Engineer - SDK

Digital Asset Holdings
Senior+
🇨🇭 🇭🇺

Budapest, Hungary | Zurich, Switzerland

Backend Software Engineer building APIs, libraries, and tools for Canton Network developers, primarily in Scala. Requires experienced Scala development and specialization in either database development or secure API design.

Scala
Verified May 24, 2026 View listing

Rust Engineer

DuckDB Labs
Senior+
🇳🇱

Amsterdam, Netherlands

Rust Engineer developing and extending the DuckDB Rust ecosystem. Rust with FFI and C++ interop, building extensions, contributing to duckdb-rs, and client consulting on database integration for production systems.

Rust
Verified May 24, 2026 View listing

Software Engineer, Backend

Duffel
Mid-level+
🇬🇧

London, England, UK

Backend engineer building a unified travel API using Elixir, Phoenix, Kubernetes and GCP. Tackle complex airline integrations and API design while shaping engineering standards.

Elixir
Verified May 24, 2026 View listing

Elixir Product Engineer

Dyad
🇬🇧

London, England, UK

Elixir product engineer role building healthcare tools with Phoenix and LiveView. Full-stack development, SQL optimization, CI/CD, and infrastructure in a small, agile team. Focus on UK primary care systems with hybrid flexibility.

Elixir
Verified May 24, 2026 View listing

Senior Rust Engineer

Eiger
Senior+
🏠

Remote

Contract role. Join a team of senior Web3 engineers to design, implement, and document distributed systems and core protocols for mass adoption. Requires 5+ years collaborative development experience, 3+ years hands-on Rust, and experience leading small teams in systems programming.

Rust
Verified May 24, 2026 View listing

Scala Backend Developer

Evolution Gaming Group
Mid-level+
🇵🇱

Warsaw, Poland

Scala engineer building high-performance game server components using functional programming (Cats, Cats Effect, Tagless Final). Implement domain logic, testing and 24/7 Kubernetes operations, collaborating with cross-functional teams to deliver robust, scalable systems.

Scala
Verified May 24, 2026 View listing

Senior Scala Developer

Exalate
Senior+
🏠 🇪🇸

Remote, Spain

Senior Scala developer building distributed integration platforms using Play, Akka, Slick, sbt and PostgreSQL. Apply FP, XP practices, CI/CD and Docker/Kubernetes to design microservices, solve complex architectural problems and mentor teammates across challenging integration workloads.

Scala
Verified May 24, 2026 View listing

Software Engineer

Foundry for Good
Mid-level+
🏠 🇵🇭

Remote, Philippines

Software engineer building and supporting a Clojure-based platform with React, Postgres, Elasticsearch and Azure. Implement features, fix bugs, handle advanced troubleshooting, contribute to CI/CD, testing and DevOps while growing into full codebase ownership.

Clojure
Verified May 24, 2026 View listing

Backend Engineer

Fresha
Mid-level+
🇵🇱

Warsaw, Poland

Backend Engineer working on a global beauty platform using Ruby, Elixir, GraphQL, TypeScript, Kafka, and Kubernetes in microservices.

ElixirRuby
Verified May 24, 2026 View listing

Software Engineer

Gateless
🏠

Remote, Latin America

Clojure role building a distributed expert system for mortgage automation using Clara Rules, AWS, and Svelte. Functional programming focus with microservices, Step Functions, and Terraform. Fintech or AI experience a plus.

Clojure
Verified May 24, 2026 View listing

Intermediate Software Developer

Genetec
Mid-level+
🇨🇦

Montreal, Canada

Mid-level Software Developer building features for a cloud VoIP communication platform. Work with C#, F#, Go, SIP/WebRTC, codecs, web tech, Docker/Kubernetes, and cloud deployments while contributing tests, estimates, and cross-team collaboration.

C#F#Go
Verified May 24, 2026 View listing

.NET Software Developer

Genetec
🇨🇦

Montréal, Canada

Full-time .NET developer (C#/F#). Build frontend and backend for scalable enterprise systems across domains like cloud, video, or access control. All experience levels welcome. Uses Visual Studio, .NET, F#.

C#F#
Verified May 24, 2026 View listing

Engineering Manager

Griffin Bank
Manager+
🏠 🇬🇧

Remote, UK

Engineering Manager leading cross-functional teams building banking infrastructure for fintechs. Clojure with distributed systems, focusing on delivery through Shape Up cycles, technical decision accountability, and engineer development in a functional programming environment.

Clojure
Verified May 24, 2026 View listing

Haskell Software Engineer

Heilmann Software
🇩🇪

Stuttgart, Germany

Haskell developer role in a collaborative, model-driven team using GHCJS, optics, and optionally FRP or CouchDB. Emphasis on simplicity, creative problem-solving, and long-term growth. Welcomes non-traditional backgrounds with strong Haskell interest.

Haskell
Verified May 24, 2026 View listing

Backend Software Engineer

Hubs Contabilidade
Mid-level+
🏠 🇧🇷

Remote, Brazil

Backend Software Engineer developing systems for the accounting technology sector. Elixir with Phoenix, PostgreSQL, and AWS, focusing on backend architecture, API development, technical debt, and database performance.

Elixir
Verified May 24, 2026 View listing

Senior Software Engineer - UltraGrid

Hypervolt
🇬🇧 🇺🇸

London, England, UK | Palo Alto, CA, USA

Senior Software Engineer role building an ultra-low latency, real-time engine for distributed energy assets. Requires deep Scala/Java expertise, performance engineering mastery, and systems-level thinking.

Scala
Verified May 24, 2026 View listing

Sr. Rust Cloud Software Engineer

InfinyOn
🏠

Remote

Remote senior Rust role building real-time cloud data infrastructure with Fluvio. Involves Rust async, Kubernetes, WebAssembly, and AWS. Requires 2+ years Rust, strong Linux/networking, and distributed systems experience.

Rust
Verified May 24, 2026 View listing

Founding Backend Engineer

Instant
Senior+
🇺🇸

San Francisco, CA, USA

Founding backend engineer building a real-time database platform. Work on Clojure/JVM services handling massive websocket traffic, permissions DSLs, sync engine extensions, and Postgres integration. High agency role improving infrastructure, observability, and scalability.

Clojure
Verified May 24, 2026 View listing

Senior Full-Stack Engineer

Instinct Science
Senior+
🏠 🇺🇸

Remote, USA

Senior Full-Stack Engineer developing veterinary practice software and clinical tools. Elixir and React on AWS, building scalable SaaS applications, relational databases, and customer-facing features for a global user base.

ElixirTypescript
Verified May 24, 2026 View listing

F# web developer

IntelliFactory
🇭🇺

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.

F#
Verified May 24, 2026 View listing

Software Engineer

Jane Street
🇺🇸

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.

OCaml
Verified May 24, 2026 View listing

Programming Language Engineer

Jane Street
🇺🇸

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.

OCaml
Verified May 24, 2026 View listing

Software Development Engineer

Juspay
Senior+
🇧🇷

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.

Haskell
Verified May 24, 2026 View listing

Senior/Staff Software Engineer

Keepit
Senior+
🇵🇱 🇺🇦

Krakow, Poland | Lviv, Ukraine

Senior/Staff Software Engineer building core platform for cloud backup systems. Common Lisp with SBCL, Emacs, and Slime on Linux, focusing on microservices, distributed systems, and high-performance job scheduling.

Common Lisp
Verified May 24, 2026 View listing

Engineering Lead

Keyrock
Manager+
🏠

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.

Rust
Verified May 24, 2026 View listing

Software Engineer - Event Gateway

Kong
Mid-level+
🇮🇹

Milan, Italy

Software Engineer building a high-performance Kafka protocol proxy for an event gateway platform. Rust with async, Tokio, and Linux networking, focusing on distributed systems, protocol optimization, and low-level performance.

Rust
Verified May 24, 2026 View listing