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Senior Software BE Engineer United Kingdom Jobs (Hybrid work)

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Senior Software Engineer
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Join Barclays as a Senior Software Engineer in Knutsford/Manchester. Design and develop high-quality Java/Spring Boot APIs, re-architecting key systems. Collaborate in agile teams, championing best practices and secure coding. Enjoy benefits like private medical care and a competitive pension.
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United Kingdom , Knutsford; Manchester
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Barclays
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Senior Software Supply Chain Security Engineer
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Join our London team as a Senior Software Supply Chain Security Engineer. You will design and implement secure, cloud-centric solutions using AWS, Kubernetes, and Terraform. Champion DevSecOps practices and integrate security into CI/CD pipelines within an inclusive, flexible culture. Drive engin...
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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 Cambridge-based quantum computing leader as a Senior Software Engineer. Develop cutting-edge cloud infrastructure using Python, AWS/Azure, and Terraform. Enjoy flexible work, equity, and collaborate with world-class innovators on revolutionary quantum AI and cybersecurity platforms.
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United Kingdom , Cambridge
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Gitmax
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Senior Software Engineer
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Join our London team as a Senior Software Engineer. You will design technical architecture and lead complex projects in Scala/Python, shaping the SolstiCE platform. This role offers a bonus, private medical care, and 27 days' leave. Drive efficiency and automation for our Equity Derivatives busin...
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United Kingdom , London
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Citi
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Senior Software Engineer - Build AI Tools
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Join Citi's new GenAI Security team in Belfast as a Senior Software Engineer. Design and build a scalable security platform to protect AI applications from adversarial attacks. Leverage your expertise in Python/Go and secure APIs within a collaborative, cutting-edge environment. This role offers ...
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United Kingdom , Belfast
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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 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 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 Frontend Software Engineer
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Join Blis in Edinburgh as a Senior Frontend Engineer. You will build customer-facing web apps for complex ad campaigns using React, TypeScript, and modern tooling. Leverage 7+ years of experience to create beautiful data visualizations from geospatial and big data. This is a key role in a tech-fi...
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United Kingdom , Edinburgh
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Blis
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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 (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
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Join a leading European logistics provider as a Contract Senior Software Engineer. Design, build, and maintain impactful software solutions using Python, React, T-SQL, AWS, and Terraform. Collaborate with cross-functional teams in a fast-paced UK-based role to drive innovation and operational eff...
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United Kingdom
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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 Retail Insight as a Senior Fullstack Software Engineer in Richmond-Upon-Thames. Design and build cutting-edge analytics platforms using .NET Core, React JS, and SQL/NoSQL databases. Enjoy a hybrid model, private medical insurance, and structured career development in a collaborative team.
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United Kingdom , Richmond-Upon-Thames
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Retail Insight
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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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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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