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Senior Software BE Engineer United Kingdom, London Jobs

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Senior Full-Stack Software Engineer
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Join our London team as a Senior Full-Stack Engineer. Drive innovation using Go, Python, and React within a product-focused, agile environment. Enjoy a hybrid model, 27 days leave, bonus, and comprehensive benefits while revolutionizing controls management.
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United Kingdom , London
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Citi
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Senior Software Engineer
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Join a scaling B2B SaaS firm in London, building a global compensation intelligence platform. As a Senior Software Engineer, you'll own core features end-to-end with TypeScript across the stack. We seek a collaborative expert who designs scalable systems and mentors peers, offering a clear path t...
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United Kingdom , London
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110000.00 GBP / Year
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Oho Group Ltd
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Senior Software Engineer
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Join Equinox in London as a Senior Software Engineer. Lead complex projects, design system architectures, and mentor junior developers using Java and Kafka. Enjoy a hybrid model, bonus, private healthcare, and 27 days leave.
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United Kingdom , London
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Citi
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Senior Software Engineer
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Join Citi's XiP team in London as a Senior Software Engineer. Design and optimize the core distributed Risk Calculation Engine for global trading desks. Leverage your deep Java, Spring, and large-scale system expertise in a pivotal role. Enjoy global benefits supporting your well-being and profes...
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United Kingdom , London
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Citi
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Senior Software Engineer
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Join our London team as a Senior Full Stack Engineer. You will develop and maintain the global accesso Horizon platform using Java, JSP, and SQL. We seek 5+ years' experience with cloud scalability, unit testing, and Scrum. Enjoy flexible hours, virtual team events, and a commitment to diversity.
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United Kingdom , London
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accesso
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Senior Software Engineer
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Join our In-Car Payments Engineering team in London as a Senior Software Engineer. You will build secure, cloud-based transaction systems using TypeScript, Node.js, and AWS serverless services. Your expertise in PCI DSS, API security, and Terraform will be key to delivering cutting-edge in-car co...
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United Kingdom , London
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Arrive
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Senior Software Engineer
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Join our London team as a Senior Software Engineer. You will develop scalable PHP/MySQL platforms and RESTful APIs on AWS, focusing on performance and security. We value expertise in modern CI/CD, software architecture, and mentoring. Enjoy a collaborative, supportive, and inclusive work environm...
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United Kingdom , London
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Arrive
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Senior Software Engineer
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Join Blockchain.com as a Senior Software Engineer in London. Build low-latency trading systems in RUST, focusing on OMS and exchange gateways. Leverage your Python, SQL, and trading systems expertise in a hybrid role with a "work from anywhere" policy, equity, and unlimited vacation.
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United Kingdom , London
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Blockchain
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Senior Software Engineer - Cloud Infrastructure
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Join ClickHouse Cloud as a Senior Software Engineer in London. Design and build robust, scalable cloud infrastructure using Go and Kubernetes on AWS/Azure/GCP. Enjoy a flexible remote role with equity, healthcare, and a home office stipend in a globally distributed team.
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United Kingdom , London
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ClickHouse
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Senior Software Engineer (Infrastructure)
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Join our London team as a Senior Infrastructure Software Engineer. Build and own scalable backend systems for massive AI training datasets using PostgreSQL, ClickHouse, and Python/Typescript. Enjoy a competitive package with equity while solving complex problems in a high-performance, in-person c...
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United Kingdom , London
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Encord
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Senior Fullstack Software Engineer
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Join a leading digital consultancy as a Contract Senior Fullstack Engineer in London. Design and build high-performance, scalable software systems using Angular, Java, and Node.js. Lead technical decisions, mentor engineers, and drive best practices in a dynamic, project-focused environment.
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United Kingdom , London
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Formula Recruitment
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Senior Software Engineer - UltraGrid
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Join our experienced team in London as a Senior Software Engineer for the mission-critical UltraGrid engine. You will architect and optimize high-performance, cost-efficient systems using Java/Scala, with Rust as a bonus. We offer competitive compensation, stock options, comprehensive benefits, a...
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United Kingdom , London
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Hypervolt Limited
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Senior Software Engineer
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Join Made Tech to use your software engineering skills for public good. As a Senior Software Engineer, you'll deliver impactful digital services across the UK government and NHS. This remote-friendly role requires agile experience, cloud platform knowledge, and eligibility for SC clearance. Enjoy...
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United Kingdom , Bristol; London; Manchester; Swansea
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50000.00 - 70000.00 GBP / Year
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Made Tech
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Senior Software Engineer
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Join Dalet as a Senior Software Engineer in London. Develop core C++ applications for media processing, transcoding, and rendering within a broadcast/film environment. Collaborate with talented teams in a dynamic, global company offering excellent career growth. Revolutionize media workflows in a...
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United Kingdom , London
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Dalet
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Senior Software Engineer
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Join TxODDS in London as a Senior Software Engineer. You will design scalable solutions using Scala, Kafka, and SQL, while championing simplicity and best practices. This strategic role involves mentoring, architectural decisions, and pioneering AI-assisted development for global sports betting t...
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United Kingdom , London
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TXODDS
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Senior Software Engineer II
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Lead the design and scaling of a planet-scale cloud control plane for global IoT fleets at Axon. This senior role requires 10+ years in distributed systems, deep expertise in Go, Kubernetes, and cloud-native security. Based in London, you'll directly impact public safety while enjoying a competit...
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United Kingdom , London
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Axon
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Senior Software Engineer in Test
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Join Axon's mission to protect life as a Senior SDET in London. You will architect test infrastructure and lead automation for mission-critical, AI-powered public safety platforms. This role requires 7+ years' experience in test automation, proficiency in languages like Python/Java, and expertise...
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United Kingdom , London
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Axon
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Senior Software Engineer – GTM Systems
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Join our London team as a Senior Software Engineer for GTM Systems. You will build scalable tools on Salesforce and Snowflake, using Python, SQL, and Apex. Translate business needs into technical solutions and mentor peers in a fast-growing startup. Enjoy competitive salary, equity, comprehensive...
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United Kingdom , London
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Intercom
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Senior Embedded Software Engineer
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Join a scaling Tech for Good company in London as a Senior Embedded Software Engineer. You will design and test firmware for embedded systems, using your 5+ years of C expertise in IoT and wireless communications. This hybrid role offers the chance to work on data-driven, AI-first solutions with ...
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United Kingdom , London
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100000.00 GBP / Year
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Formula Recruitment
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Senior Software Engineer - Java Full Stack, Futures Engineering
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Lead the development of a Cleared Derivatives back-office system in London. This senior Java Full Stack role requires 7+ years of back-end expertise, financial industry experience, and skills in microservices, Kafka, and Kubernetes. Contribute to ReactJS front-end and enjoy competitive compensati...
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United Kingdom , London
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Clear Street
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Explore a world of opportunity in senior software backend engineering jobs, where experienced professionals architect the core logic and services that power modern applications. A Senior Backend Engineer is a pivotal technical leader responsible for designing, building, and maintaining the server-side components, databases, and APIs that form the foundation of software systems. This role goes beyond writing code; it involves making critical architectural decisions that ensure scalability, reliability, security, and performance as user bases grow and data volumes increase. Professionals in these jobs typically own the end-to-end development of robust backend services. Common responsibilities include designing and implementing efficient data models and database schemas, building well-documented and secure RESTful or GraphQL APIs, and developing the business logic that drives application functionality. They are deeply involved in integrating various third-party services, managing authentication and authorization systems, and ensuring data integrity and protection. A significant part of the role is optimizing system performance, diagnosing complex bottlenecks, and planning for scalability, often using cloud-native patterns like microservices, serverless functions, and event-driven architectures. Furthermore, senior engineers are expected to establish and champion best practices in code quality, testing, and deployment, frequently mentoring junior team members and collaborating closely with frontend engineers, DevOps specialists, and product managers. The typical skill set for these senior roles is extensive. Proficiency in one or more backend programming languages such as Python, Java, Go, C#, or Node.js is fundamental. A strong grasp of database technologies, both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, DynamoDB), is essential. Candidates are expected to have hands-on experience with cloud platforms like AWS, Azure, or Google Cloud, and with infrastructure-as-code tools such as Docker and Kubernetes. Understanding CI/CD pipelines, version control with Git, and comprehensive testing strategies are standard requirements. Beyond technical prowess, successful senior backend engineers possess excellent problem-solving abilities, clear communication skills for articulating complex technical concepts, and a proven track record of taking ownership of projects from conception to deployment and iterative improvement. For those with the requisite experience and a passion for building resilient systems, senior software backend engineer jobs offer a challenging and rewarding career path at the heart of technological innovation.

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