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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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United Kingdom , London
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Heidi
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Senior Software Engineer (Backend - EMR/EHR Integrations)
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Join our London team as a Senior Backend Engineer specializing in EMR/EHR integrations. You will design and build critical healthcare API connections using standards like HL7 and FHIR, with Python/FastAPI. This hybrid role offers equity, wellness days, and a direct impact on AI-powered clinical w...
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United Kingdom , London
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Heidi
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Senior Software Engineer
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United Kingdom , London or Bristol
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Just Eat Takeaway.com
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Senior Software Engineer II
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United Kingdom , London
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Axon
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Senior Software Engineer, Dedrone Infrastructure
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United Kingdom , London
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Axon
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Senior Software Engineer
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Join Microsoft's global Industry Solutions Engineering team in London as a Senior Software Engineer. Develop cutting-edge cloud solutions directly with customers, tackling their toughest technical challenges. This role requires a CS degree/equivalent and involves up to 25% travel. We offer a comp...
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United Kingdom , London
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Microsoft Corporation
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Senior Software Engineer
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Join TxODDS in London as a Senior Software Engineer. Build and maintain high-performance, real-time data acquisition systems using Java/Scala, Kubernetes, and Docker. This key role requires 5+ years' experience and offers a competitive benefits package in a collaborative, fast-paced environment.
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United Kingdom , London
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TXODDS
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Senior Software Engineer
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Join our Equity Derivatives technology team in London as a Senior Software Engineer. You will develop and support the high-performance pricing platform using Java, RESTful services, and modern engineering practices. This role offers collaboration with front office teams to build scalable solution...
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United Kingdom , London
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Citi
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Senior Software Engineer
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United Kingdom , London
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150000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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United Kingdom , London
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250000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer – Backend
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United Kingdom , London
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Orbis Consultants
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Senior Software Engineer (Product)
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Join Legl in London as a Senior Software Engineer, owning high-impact product problems end-to-end. We seek a product-centric full-stack engineer who leverages AI and values simplicity to drive customer outcomes. Enjoy competitive salary, share options, and a strong learning budget at this ambitio...
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United Kingdom , London
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Legl
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Senior Software Engineer – AWS Connect / Lex
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United Kingdom , London
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Harrington Starr
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Senior Software Engineer
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Join our London team as a Senior Software Engineer. You will lead development on our PHP/MySQL/AWS platform, building scalable RESTful APIs and web applications. We value expertise in modern software engineering, CI/CD, and full-stack performance tuning. Enjoy a collaborative, supportive environm...
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United Kingdom , London
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Arrive
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Senior Software Engineer, Data Engineering
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Join a leading investment firm as a Senior Software Engineer (Contract) on their high-scale Market Data Platform in London. You will design and optimize critical systems using Java and Python, handling billions of real-time data points daily. This high-impact role requires expertise in low-latenc...
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United Kingdom , London
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rmg digital
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Senior Software Engineer
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Join Microsoft's OneFuzz team in London as a Senior Software Engineer. Develop a scalable, cloud-based fuzzing platform using Python, C#, or Rust. Integrate security testing into CI/CD pipelines and advance fuzzing techniques. Collaborate on open-source innovation within a distributed systems env...
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United Kingdom , London
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Microsoft Corporation
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Senior Frontend Software Engineer
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Join Atlassian in London as a Senior Frontend Software Engineer. You will build and modernize frontend infrastructure using React, JavaScript (ES6), and modern testing frameworks. Drive complex projects, mentor junior engineers, and deliver impactful user experiences. Enjoy benefits including hea...
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United Kingdom , London
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Atlassian
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Senior Golang Software Engineer
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Join Citi's pioneering team in London as a Senior Golang Engineer. Lead the 0-1 build of innovative AI products and platforms, leveraging your expertise in Golang, large-scale ML systems, and MLOps. Enjoy a hybrid model, competitive salary, bonus, and comprehensive benefits while defining the fut...
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United Kingdom , London
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Citi
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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 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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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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