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Hand-curated positions in niche programming languages

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Lead Software Development Engineer

Amperity
Lead+
🏠 🇦🇷

Remote, Argentina

Lead Software Development Engineer building AI-powered customer data platforms. Clojure with large-scale data systems on AWS, focusing on knowledge graphs, ML model training, and scalable infrastructure for internal and external customers.

Clojure
Verified May 9, 2026 View listing

Lead Product Engineer

Artificial Labs
Lead+
🏠 🇬🇧

Remote (UK)

Lead Product Engineer designing scalable architectures for specialty insurance technology. Haskell with a focus on technical leadership, complex initiative delivery, and team development.

Haskell
Verified May 9, 2026 View listing

Senior Full Stack Engineer

August Health
Senior+
🏠 🇺🇸

Remote, USA

Build and ship a modern EHR/operating platform for senior care. Focus on Scala/Play backend and React/TypeScript frontend. Requires 7+ years experience; knowledge of the Effect ecosystem is a plus.

Scala
Verified May 9, 2026 View listing

Software Developer

B+S Banksysteme AG
🇦🇹

Salzburg, Austria

The role involves building and maintaining banking software in Cobol and Java. Involves full lifecycle work, quality assurance, and customer support collaboration.

COBOLJava
Verified May 9, 2026 View listing

Exchange Software Engineer

Bitnomial
Mid-level+
🇺🇸

Chicago, IL, USA

Exchange Software Engineer building core services for a CFTC-regulated derivatives exchange and clearinghouse. Haskell with concurrent systems, relational databases, and low-latency design, focusing on matching engines, margin and risk systems, and market data.

Haskell
Verified May 9, 2026 View listing

Scala Engineer - Growth

Caesars Entertainment
Mid-level+
🇺🇸

Jersey City, NJ, USA | Las Vegas, NV, USA

Build and maintain robust backend systems for real-time customer engagement and retention platforms). Requires 3+ years backend development, 2+ years professional Scala, strong functional programming, and experience with real-time systems and Kafka/microservices.

Scala
Verified May 9, 2026 View listing

Senior Raincode Architect

Cognizant
Senior+
🇮🇳

Kolkata

Design and develop comprehensive architectural solutions using the Raincode Platform for mainframe modernization projects. Requires 12-16 years experience and deep expertise in Raincode Platform, CICS, VSAM, JCL, DB2, and COBOL.

COBOL
Verified May 9, 2026 View listing

Senior Software Engineer

Common Prefix
Senior+
🏠

Remote

Senior Software Engineer building blockchain protocols and infrastructure, working primarily in Rust. Requires 5+ years software engineering experience with large-scale systems and network programming.

Rust
Verified May 9, 2026 View listing

Senior Software Engineer

Converge
Senior+
🇬🇧

London, England, UK

Senior Software Engineer building data-driven products for the construction industry. Haskell with TypeScript and Python, focusing on domain modelling, technical design, and leading initiatives.

HaskellPythonTypescript
Verified May 9, 2026 View listing

Cobol Developer

Crédit Mutuel
Mid-level+
🇫🇷

Courbevoie, France

Senior Developer building debt collection and dispute management applications for factoring operations. Requires experience with IBM Z/OS, COBOL, and DB2.

COBOL
Verified May 9, 2026 View listing

Senior Cobol/C# Developer

Crédit Mutuel
Senior+
🇫🇷

Strasbourg, France

Full-cycle analysis and development role for the "Cardlink" Monetics Sector supporting foreign banks. Requires a Bac+4/5 degree and proficiency in both COBOL and C#.

C#COBOL
Verified May 9, 2026 View listing

Senior Cobol Developer

Crédit Mutuel
Senior+
🇫🇷

Nantes, France

Develop and maintain mainframe applications covering the Basel regulatory functional scope for Credit Risk. Requires a Bac+4/5 degree and proficiency in COBOL/DB2.

COBOL
Verified May 9, 2026 View listing

Principal Machine Learning Engineer

Daedalean
🇨🇭

Zürich, Switzerland

Principal ML engineer role leading certified AI avionics development. Focus on visual traffic detection, deep learning, and CV using Rust, Python, and C++. Strong research and system design responsibilities.

Rust
Verified May 9, 2026 View listing

Senior Engineer, AVP

Deutsche Bank
Senior+
🇮🇳

Pune, India

Senior Engineer building trader and counterparty surveillance systems using Scala, Java, Python, and Big Data technologies (Spark, Impala, Hive, Hadoop). Requires core expertise in Scala and Java, Python exposure, and experience with large datasets.

JavaPythonScala
Verified May 9, 2026 View listing

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 9, 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 9, 2026 View listing

Elixir Software Engineer

Driftrock
Mid-level+
🇬🇧

London, England, UK

Elixir Software Engineer building a marketing technology platform for automotive and e-Mobility sectors. Elixir with LiveView, PostgreSQL, Redis, RabbitMQ, and Kubernetes on Google Cloud, focusing on event-driven architecture, data-driven features, and XP practices including TDD and pair programming.

Elixir
Verified May 9, 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 9, 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 9, 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 9, 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 9, 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 9, 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 9, 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 9, 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 9, 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 9, 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 9, 2026 View listing