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Vermont Solutions is hiring a Senior Backend Developer to design, build, and maintain Java/Spring Boot microservices, working hands-on with Apache Kafka event-driven and distributed systems, PostgreSQL/Oracle/MongoDB, TDD/BDD testing, and Agile/Scrum. Requires 6+ years of backend experience and B2-level English.
Senior backend developer at NN Group's Madrid digital hub designing and building scalable cloud solutions on Azure PaaS. Day to day involves modern .NET development, API development, testing, and governance, with hybrid work in Madrid, mentoring juniors, and helping shape NN Group's architectural standards.
Senior .NET developer in Madrid who designs, builds, and maintains backend software that integrates with the security products the company sells. The stack centers on ASP.NET Core, REST APIs, and relational databases (SQL Server, MySQL, SQLite), working with agile practices.
Bcnc Group seeks a Senior Backend Developer with COBOL for a strategic core-banking project, maintaining mainframe applications that keep critical banking services stable. Day-to-day work spans COBOL, DB2, z/OS, JCL and CICS development, incident analysis, and end-to-end deliveries across environments.
Senior Backend Engineer in a hybrid London role building Voice AI pipelines integrated with the backend core, collaborating with ML teams to deploy scalable carrier-grade systems. The stack is Go/Python in a fast-growth tech company.
Senior engineer at Permutable designs and builds backend services, distributed systems, and cloud infrastructure for real-time, event-driven, agent-driven AI market-intelligence platforms serving financial institutions. A hands-on role with end-to-end ownership, working directly with the founder and engineering team.
Data Idols is hiring a Senior Backend Engineer in London (hybrid) to shape architecture and drive scalability of a cloud-native AI platform used by enterprise clients globally, owning backend components from design through deployment while optimizing performance and reliability.
A senior backend engineer builds cloud-native backend services using Microsoft .NET technologies, collaborating with frontend, cloud and platform teams. The role is hybrid (two days onsite weekly in Chester) within a regulated, mission-critical domain, with an AI-driven focus.
Senior Backend Engineer at Robinhood in London building and operating the AWS-backed crypto custody and blockchain node stack. Day to day: automating infrastructure with Python, running blockchain nodes, expanding Kubernetes/Docker deployments, owning custodian integrations, and sharing on-call for availability and security.
Senior backend engineer at Machine Medicine, a med-tech SaaS startup building AI-powered, video-based motor assessment tools. You'll design, build and maintain cloud infrastructure and deployment pipelines, ship TypeScript/NestJS production code, and strengthen security while handling sensitive clinical data.
Senior backend engineer building a real-time messaging platform that serves developers and businesses, working primarily with Go and Node.js on scalable distributed systems, performance optimization, and code quality. Remote-friendly role with occasional collaboration from a North London office.
Senior backend engineer joining the core data/backend team of a global sports technology platform, designing APIs, distributed systems and large-scale data pipelines that power all its products. Stack includes C#/.NET (JVM/Java welcome), GraphQL, Elastic, MongoDB, Kubernetes and AWS; London-based hybrid role.
Meltwater Group is hiring a Senior Backend Engineer in London to design and build scalable APIs, export features, and high-throughput data pipelines, including MCP server architecture. The core stack is Golang, AWS, and microservices with modern observability, working closely with product managers and senior engineers.
Ryft is hiring a senior backend engineer with 5+ years of experience to build robust, scalable systems for its fintech product using C#/.NET on AWS. The role involves hands-on development, improving existing systems, design decisions, and greenfield project work.
Arrive (Parking Network BV) is hiring a Senior Backend Engineer in London to design and build scalable PHP/Laravel backend services, APIs and infrastructure powering pricing and revenue for its parking marketplace, with hands-on ownership from design through delivery alongside Product, Pricing, Data and Engineering teams.
Design, develop, and maintain Go backend microservices that power iOS and Android mobile apps used by millions, as part of HCLTech's Mobile Cloud Services team in London. Day to day involves cloud-native service development, strong API design, and close collaboration with DevOps and product teams.
Senior backend engineer at On the Beach Group (an online travel company) designing and building scalable backend services and APIs for customer-facing apps and internal systems using C#/.NET, AWS, Docker, Kubernetes, and SQL/NoSQL data stores, in a remote-first hybrid setup with bi-weekly Manchester office visits.
Senior backend engineer building scalable PHP/Laravel services, APIs and data pipelines for Arrive's pricing and revenue platform in a hybrid London role. Works closely with Product, Pricing and Data teams to turn commercial ideas into reliable, observable systems on AWS.
A senior backend engineer role in Newcastle upon Tyne designing and delivering business-critical, high-performance distributed services using C# and .NET, involved from design through production delivery in a fintech context.
Ryft, a fast-growing UK fintech, is hiring a Senior Backend Engineer to build and own the systems that move money on its AWS-based payments platform. Day to day: designing and shipping end-to-end backend features in C#/.NET, ensuring correctness under retries and concurrency, and owning production readiness, instrumentation and incident response in a small, ambitious team.
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