Remote Backend Developer jobs open to Europe.

JavaScript · Rust

8+ years software development, Rust and JavaScript, database systems

MozillaMozilla is a family of mission-driven organizations behind Firefox, Thunderbird, open-source AI tools and public-interest technology initiatives.

Java

Java and Spring Boot backend, event-driven microservices, Kafka, real-time systems, employee contract (no B2B)

BVNKBVNK is a UK-based fintech B2B platform specializing in stablecoin payment infrastructure, enabling businesses to send, receive, and convert currencies globally.

Java · Kotlin

Java or Kotlin, Spring Boot, Kafka, event-driven microservices, high-integrity financial systems

BVNKBVNK is a UK-based fintech B2B platform specializing in stablecoin payment infrastructure, enabling businesses to send, receive, and convert currencies globally.

TypeScript · Go

5+ years backend services in production with on-call, TypeScript or Golang, OAuth/OIDC/JWT, PostgreSQL

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

Python · Kotlin · AWS

1.5+ years software engineering, Python or Kotlin backend, AWS/MySQL/Kubernetes, no visa sponsorship

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

Python · Kotlin · AWS

4+ years backend at scale, Python or Kotlin, AWS/MySQL/Kubernetes, UK-based, no visa sponsorship

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

Java · Kotlin · AWS

Romania-based contractors only, Java or Kotlin backend, distributed event-driven systems, REST APIs, AWS

MasabiMasabi is a London-based B2B technology company specializing in fare collection solutions for public transport systems, with a global presence in major cities.

GraphQL · Ruby · SQL

UK-based, backend Ruby and GraphQL, relational databases and SQL tuning, caching, backend testing, on-call

GitLabGitLab provides a DevSecOps platform for planning, building, securing and delivering software.

Python · Kotlin · AWS

8 years of experience, Python, Kotlin, AWS, MySQL, Kubernetes, Correctness-sensitive systems, Data-processing systems, Cross-team collaboration, Technical strategy development, Code quality advocacy

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

Python · Kotlin · AWS

8 years of experience, Python, Kotlin, AWS, MySQL, Kubernetes, Correctness-sensitive systems, Data-processing systems, Cross-team collaboration, Technical strategy development, On-call operations management

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

React · Vue · Python

1.5 years of experience, Python, Kotlin, React, Vue, Declarative UI frameworks, Mobile application development, Code review, Debugging, Collaboration with product management, Agile methodology

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

React · Vue · Python

1.5 years of experience, Python, Kotlin, React, Vue, Declarative UI frameworks, Mobile application development, Code review, Debugging, Collaboration with product management, Agile methodology

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

Python

6-7+ years commercial development, Python 3.x, Django, high-load systems, fluent Russian, intermediate+ English

TorreroTorrero provides white-label casino and sportsbook platforms and B2B game aggregation for iGaming operators.

Python

5+ years commercial development, Python 3.x, Django, high-load systems, fluent Russian, intermediate+ English

TorreroTorrero provides white-label casino and sportsbook platforms and B2B game aggregation for iGaming operators.

Java · Kotlin · AWS

Java, Kotlin, AWS, Event-driven architecture, REST APIs, Kafka, Terraform, Distributed systems, Cloud-native systems, Scalable systems

MasabiMasabi is a London-based B2B technology company specializing in fare collection solutions for public transport systems, with a global presence in major cities.

Java · Kubernetes

5+ years software development, Java, Kubernetes/OpenShift, GenAI apps, Italian and English, onsite visits in Italy/EMEA

Red HatRed Hat provides enterprise open source software, including Linux, hybrid cloud, container and Kubernetes platforms, for businesses and public sector organizations.

SQL

6-8+ years software development, C#/.NET, SQL Server and T-SQL, AI-assisted dev tools, English B2+

Aras CorporationAras provides product lifecycle management software for engineering and manufacturing companies.

Python · Go · Kubernetes

5 years of experience, Golang, Python, Kubernetes, AI-assisted coding, Distributed systems

Lemon.ioLemon.io is a Ukraine-based B2B platform connecting startups with vetted freelance developers, offering services globally across various sectors.

Go

Golang or comparable backend language, distributed systems, Kafka, Pub/Sub or SQS messaging

CyberhavenCyberhaven provides an AI-native data security platform for protecting data across human and AI-agent workflows.

GraphQL · Ruby

Ruby on Rails, testable Rails code, relational databases (PostgreSQL a plus), GraphQL a plus, Tier 2 on-call

GitLabGitLab provides a DevSecOps platform for planning, building, securing and delivering software.

Rust

9+ years software engineering (fewer with degree), on-call, preferred: web-scale search, Rust, AI/ML features

GitHubGitHub is an AI-powered developer platform for code hosting, collaboration, automation, security and software delivery.

Java · SQL · Kubernetes

5 years of experience, Java 8+, Spring Boot, RESTful microservices, SQL optimization, Apache Kafka, asynchronous programming, Docker, Kubernetes, CI/CD (Jenkins), AI code companions, strong English communication

ACCESAAccesa builds digital and AI solutions for companies in retail, manufacturing and financial services.

Go · Rust

8+ years distributed systems, C/C++/Golang/Rust, API design, async programming, mTLS/IPsec knowledge

NVIDIANVIDIA builds accelerated-computing platforms for AI, data centers, gaming, robotics and autonomous vehicles.

Python · SQL · Azure

4 years of experience, Python, FastAPI, Azure, Databricks, REST APIs, SQL Server, Docker, Asynchronous processing, Messaging systems, CI/CD

Mutt DataMuttdata is a data and AI consultancy that builds data platforms and machine learning systems, such as forecasting and recommendation models, for client companies.

Python · SQL · Azure

4 years of experience, Python, FastAPI, Azure Databricks, Asynchronous processing, SQL Server, Docker, Azure services, CI/CD participation

Mutt DataMuttdata is a data and AI consultancy that builds data platforms and machine learning systems, such as forecasting and recommendation models, for client companies.

Python · Java · AWS

HPC, AWS, Java, Python, C++, Web API architecture, Containerization, Distributed systems, Linux, Infrastructure automation, Cloud integration

Node.js

5+ years backend with Node.js in production, distributed systems, PostgreSQL tuning, observability

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

3+ years Haskell, C, PostgreSQL/plpgsql, open-source contributions, Linux debugging

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

Python · Java · AWS

Java, Python, C++, AWS, Distributed systems, Production backend service ownership, Fluent English, Cloud integration with HPC, Simulation-specific solutions, High-performance computing optimization

Python

7+ years backend, Python, PostgreSQL, Redis, distributed task queues, remote anywhere in UK

ZscalerZscaler is a San Jose-based B2B cloud security company specializing in SaaS solutions for zero trust architecture and secure access service edge (SASE), serving enterprise customers globally.