8,585 Senior Backend jobs
Senior backend engineering roles owning server-side systems and APIs.
Senior Scala Backend Engineer - Hybrid, Enterprise Cloud
Senior backend engineer on Sage's HCM Localisation team, building scalable cloud services in Scala (Play Framework, Pekko) that power complex HR workflows, while driving platform modernisation with best-practice engineering and observability. Hybrid: 3 days weekly in Newcastle or London.
Remote Senior Python Backend Engineer
Senior Python backend engineer at Webbyfox, a UK-based Python web development agency, who designs, builds and scales backend services end to end — architecture, API design, deployment and monitoring — while mentoring engineers and working with product, data and DevOps teams.
Senior Backend Engineer - Go, Distributed Systems, Remote
Senior Backend Engineer at Monzo (London office or UK remote) building and supporting the bank's in-house banking platform, collaborating across squads in Core Banking, Payments, and Security. Core stack is Go with distributed systems tech including Cassandra, Kafka, Kubernetes, Docker, and AWS/GCP.
Senior Backend Engineer — Remote, Flexible Hours
Senior Backend Engineer at Monzo building parts of its UK banking platform with Go, Java or Scala, plus Cassandra and Kafka, deployed on Kubernetes and AWS/GCP. UK-based remote role with flexible hours, collaborating with product, design and ops to deliver robust, scalable services.
Senior Backend Engineer — Portfolio Data (Europe)
Senior backend engineer at Addepar maintaining and evolving the API services behind its financial/portfolio data platform, scaling them for the European market, modeling complex financial products, and ensuring regulatory compliance. Core work is backend API development.
Senior Backend Engineer
Senior backend engineer at Monzo, a UK digital bank, joining a cross-disciplinary squad to build and support parts of its in-house banking platform. Day-to-day is backend product work using Go, Cassandra, Kafka, Kubernetes and AWS/GCP; role is London-based or remote anywhere in the UK.
Security-Cleared Python Backend Engineer | ML Ready
Senior Python backend engineer in London (hybrid, 2-4 days on-site) building scalable backend services that power AI/ML solutions: productionising ML models with data scientists, building robust APIs, and deploying to cloud platforms with Docker and Kubernetes. Active SC or DV security clearance is required.
Senior Java Backend Engineer — IAM & Cloud (Hybrid)
Senior backend engineer building high-scale Java (Spring Boot) services for a regulated financial services environment in Essex, focused on secure IAM (OAuth/Azure) and high-volume transactional workloads using TDD. Hybrid role requiring 4 days per week in the Essex office, with mentoring of junior engineers.
Senior C#/.NET Backend Engineer for ROB Platform
NS is rebuilding its ROB communication platform and seeks a senior C#/.NET backend engineer to model domains and build event-driven microservices. Day to day: developing REST APIs and services using Azure Service Bus, Azure SQL and Cosmos DB in a DevOps team focused on quality and testing, working hybrid (50/50) in Utrecht.
Senior .NET Backend Engineer - Domain-Driven Microservices
Senior backend/fullstack developer to help rebuild ROB, a multichannel communication platform for Dutch Railways (NS) employees. Day to day you build C#/.NET services, design REST APIs and event-driven microservices in a DevOps team, from domain advisory through production, with test automation, security and privacy-by-design.
Senior Backend Engineer - Data Platforms
Senior backend engineer at Context Labs in Amsterdam, leading development of big-data systems and APIs for the Immutably data fabric platform. Day to day: designing scalable services in Java, Scala, and Python with Spark, Flink, and Kubernetes, plus mentoring engineers and reporting to the CTO.
Senior Backend Engineer, Integrations - Hybrid Amsterdam
Senior Backend Engineer owning the architecture, scalability, integrations, and data ingestion of Altura's tender spotting platform, using spec-driven development to ship robust backend services and APIs. Hybrid role with two days per week in the Amsterdam office.
Senior Backend Engineer, Integrations
Senior backend engineer owning integrations, web scrapers, and data ingestion pipelines for Altura's AI-powered bid/tender management platform, plus backend services and APIs. Core stack: .NET/C#, Azure, Docker/Kubernetes, CI/CD, and SQL; hybrid role based out of the Amsterdam office.
Senior Backend Engineer (Node.js)
Senior Backend Engineer at Tellent (Recruitee) designs and evolves the Node.js backend powering its HRIS platform, building reliable, scalable time-off and HR workflows with occasional React frontend contributions, on a hybrid or remote basis across Amsterdam, Cologne, and Poland.
Senior Backend Software Engineer - Java/Spring Boot
Senior backend engineer at Kadaster's Ozon team within the Digitaal Stelsel Omgevingswet (DSO), developing and maintaining 10 API services with Java backends and an Angular frontend on Kubernetes in Azure, while working SAFe/Scrum and contributing to architecture and DevOps.
Senior Backend Software Engineer
Secondment role via Linkedtalent for a senior backend engineer on the Ozon team at Het Kadaster (the Dutch land registry): building and running Java/Spring Boot APIs that validate, register and publish spatial-planning (Omgevingswet) documents. ~10 Java services plus an Angular portal, run DevOps-style on Kubernetes in Azure with Agile/Scrum.
Senior Backend Developer (Kotlin/Java, Spring, Kafka)
Senior backend developer owning product areas in a high-traffic retail media SaaS suite serving Ahold Delhaize brands across Europe. Day to day: designing and building scalable features and automated end-to-end tests with Kotlin/Java 17, Spring microservices, Kafka, MongoDB/Postgres, and CI/CD on Azure (AKS) in a hybrid Agile team.
Senior Java Backend Developer – Spring Boot, Hybrid Utrecht
Senior Java backend developer building microservices and APIs with Java 17/21 and Spring Boot, deployed cloud-native with Docker and Kubernetes on AWS, Azure or Google Cloud. Hybrid role in the Utrecht region (max two days on-site) on a permanent contract.
Senior Backend Developer (Elixir)
Senior backend developer building and modernizing scalable backend systems for Recruitee, Tellent's applicant tracking system. Day-to-day involves Elixir development, owning features end to end, and architecture decisions, with PostgreSQL, Elasticsearch, and RabbitMQ.