(Senior) Backend Engineer (Haskell)

TL;DR

(Senior) Backend Engineer (Haskell): Build and maintain core services for the end-to-end encrypted communication platform with an accent on scalability, reliability, and security. Focus on architectural decisions, feature implementation in service-oriented and federated systems, data architecture evolution including PostgreSQL migration, and ensuring robust testing.

Location: Remote in Germany or Europe, hybrid possible from our Berlin office

Company

Leading end-to-end encrypted communication platform revolutionizing secure collaboration for businesses, critical infrastructure, and governments.

What you will do

• Develop and maintain backend services in Haskell, contributing to the evolution of the existing codebase.
• Contribute to architectural decisions for stability, scalability, and maintainability.
• Implement new features collaborating with Product, Client Engineering, CoreCrypto, Security, and QA teams.
• Work on large-scale service-oriented and federated architectures, designing and operating scalable systems.
• Support data architecture evolution and PostgreSQL migration.
• Take technical ownership within your feature scope, aligning architecture, implementation, and testing strategies.
• Build robust, well-tested software and collaborate on quality, stability, and security improvements.
• Share knowledge with the backend team and contribute to engineering culture.

Requirements

• Fluent English required.
• Proven experience in backend development with Haskell.
• At least 3 years developing scalable backend systems or distributed services.
• Experience with service-oriented architectures, software architecture, API design, testing, and code maintainability.
• Comfortable in cross-functional teams, communicating technical decisions.
• Interest in secure communication systems, privacy, and modern cryptography.

Nice to have

• Experience with Servant, Polysemy, or comparable Haskell libraries.
• Experience with PostgreSQL or database migrations.
• Experience with federated systems.
• Experience with Rust or Go.
• German language skills.

Culture & Benefits

• Yearly education budget of 1000 EUR.
• Urban Sports Club subscription.
• Work from Berlin office or hybrid with flexibility to work from anywhere selected days.
• Fresh breakfast, fruits, snacks, soft drinks, and premium coffee in office.
• Equal opportunity employer.