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Backend Engineer - Contract Location: Manchester, Leeds, Edinburgh or Bristol Contract: Initial 3 months, with view to extend Rate: Up to £800 per day Working Pattern: Hybrid We're looking for an experienced…
Origin8tive Ltd is hiring a senior backend engineer in Cheltenham to design, build, and maintain backend systems in Java and C++ on Linux, while providing technical leadership, mentoring, and input on architecture. Applicants must hold or be eligible for UK security clearance; salary up to £78,000.
Senior backend/platform engineer building scalable REST data APIs (FastAPI) and large-dataset access layers (Pandas, Parquet/Arrow, DuckDB) for institutional investor products. Owns the identity layer (OAuth2, JWT, API keys) in a multi-tenant SaaS on AWS, plus data services and occasional frontend work.
EC1 Partners is hiring a backend engineer in London to build payment processing infrastructure that handles high-volume, secure transactions. The engineer owns core payment services, focusing on reliability, speed, compliance, fault tolerance, and monitoring in a cloud-native financial services environment.
Senior backend engineer joining Kadaster's Ozon team to build Java/Spring Boot backends (with some Angular frontend) for a central Dutch DSO service that validates and registers environmental documents via APIs. Works in a 10-person Agile Scrum team on clean code, code reviews and DevOps.
Senior backend engineer at Het Kadaster (the Dutch land registry) building Java/Spring Boot backends for the Ozon team within the DSO ecosystem. Day to day: designing and implementing Java services alongside an Angular frontend on Kubernetes, delivering quality software via SAFe/Agile with DevOps and CI/CD.
Senior Java backend developer building and maintaining the NDW Backbone, the real-time road traffic data platform for the Dutch national data portal. Day to day: Java back-end development, Kubernetes deployments, and SAFe Scrum collaboration with a product owner, scrum master, tech lead, and fellow Java engineers.
Senior Backend Engineer to develop and maintain Overheid.nl for Logius (Dutch government), working on personalization, geo-search and a high-availability portal. Core stack is PHP/Drupal with DevOps tooling like Docker, Kubernetes and CI/CD, collaborating with front-end and UX designers.
Crowe Nederland is hiring a Senior Backend Engineer to build and maintain the Python (FastAPI, PostgreSQL) backend of its CynthAI platform, delivering APIs and data models and shaping architecture, security, and scalability so AI features run reliably in production, in collaboration with data, dev, and AI teams in a hybrid setup.
Hands-on tech lead for Nebius' Managed Kubernetes (mk8s) Core team in the Netherlands, owning the service control plane, cluster autoscaling, platform integrations, and k8s add-ons that run AI workloads on tens of thousands of GPU servers. Core tech: Golang and Kubernetes, with IC work before taking on management of 4–8 engineers.
Nebius is hiring a Lead Backend Engineer to head its mk8s Core team for the AI cloud, owning the API, core service control plane, and cluster autoscaling. The role starts as a hands-on IC before moving into management of 4–8 engineers, requiring 8+ years of experience plus expert Golang and Kubernetes skills.
A senior/staff backend engineer role at Nebius in Amsterdam leading the mk8s Core team — owning the service control plane API, cluster autoscaling, platform integrations, and Kubernetes add-ons. Starts as a hands-on individual contributor, then takes on management duties; core tech is Golang and Kubernetes.
Hands-on tech lead for Nebius Managed Kubernetes (mk8s) Core team in the Netherlands: write and review Go code for the service control plane, cluster autoscaling and platform integrations while managing 4–8 mid-to-senior engineers and joining on-call. Core tech: Golang, Kubernetes, large-scale GPU cloud infrastructure.
Senior backend developer building and optimizing a global football data platform (matches, teams, players) using C#/.NET, REST APIs, SQL Server and Umbraco, including caching and scalability work, on an Amsterdam-based scale-up team.
Freelance (zzp) senior backend engineer joining Het Kadaster's Ozon team, building and operating ~10 Java/Spring Boot services that validate, register and serve Omgevingswet spatial-planning documents via APIs. Stack includes Kotlin, Angular, PostgreSQL/PostGIS, RabbitMQ, Docker/Kubernetes on Azure, working Agile/Scrum with full DevOps ownership.
Mid-level backend engineer joining a newly formed Go team at CodeGuild in Amsterdam, building payment infrastructure: distributed systems focused on stable, secure transactions with idempotency, encryption, and production ownership, delivering end-to-end from design to production.
Senior .NET back-end developer joining a five-person senior team to build new features and back-end services for existing software, with a focus on performance and architecture. Core stack is .NET, C#, ASP.NET and SQL Server, with Azure experience as a plus.
Medior backend developer at the Dutch national police (Politie Nederland), building operational software for evidence handling and automating data extraction for investigation teams. Daily work is agile and data-driven, using multiple programming languages on Linux with database engines and container technology.
Node.js backend developer at a marketing company in Arnhem (NL): maintain and further develop a client-facing data-analytics application, turning client requests into clean, effective code. Works in an 11-person team using JavaScript/Node.js (PHP a plus), with remote work possible in consultation. Salary €3,500–€4,700 per month.
Senior back-end developer at Aery in Eindhoven (remote) building scalable systems with Laravel and Symfony: designing RESTful APIs, working on database design, and integrating AI models into production systems across client projects and internal tools within a cross-functional team.
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