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Senior Engineer United Kingdom, London Jobs (Hybrid work)

208 Job Offers

Senior Principal Construction Support Engineer
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McDermott
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Senior Process Engineer
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McDermott
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Senior Full-Stack Engineer - Shop/Ecosystem
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Eucalyptus
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Senior Solutions Engineer
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OneTrust
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Senior Software Engineer - Processing
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TXODDS
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Principal / Senior Nuclear Safety Engineer
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United Kingdom, Greater London, Bristol or Gt Yarmouth
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Risktec Solutions
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Senior Golang Engineer – Ai Products & Platforms
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Citi
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Senior Backend Engineer - PHP
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Senior Backend Engineer (PHP) sought for a London-based role to architect scalable microservices and event-driven systems using PHP 8.4 and Laravel. You will drive engineering ownership, leveraging AWS, Docker, and MySQL for transactional reliability. Ideal candidates bring 5-8 years’ experience,...
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Arrive
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Senior Front Office Software Engineer – Python
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Senior Front Office Python Engineer sought by a global Hedge Fund for a greenfield trading desk build-out in London. This role offers direct PnL impact, building high-performance tools and cloud-native analytics alongside elite technologists. Requires exceptional Python (pandas, OOP) skills and e...
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Orbis Consultants
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Senior Cloud Engineer
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Senior Cloud Engineer sought to design and deploy secure, scalable cloud solutions for UK public sector clients. Leverage deep expertise in AWS, Azure, or GCP, alongside IaC (Terraform) and containerisation (Docker, Kubernetes). Join multidisciplinary teams in Bristol, London, Manchester, or Swan...
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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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Senior Software Engineer sought by EDF to build secure, scalable, customer-focused tech for the net zero journey. You’ll design and improve software using React, TypeScript, AWS, and NodeJS in agile teams. Enjoy a £75k salary, remote flexibility, and offices in London or Hove. Benefits include an...
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75000.00 GBP / Year
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EDF UK
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Senior Identity & Access Management Engineer
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Senior Identity & Access Management Engineer sought to join a global team in London, delivering secure, automated IAM at scale. You will manage Okta Identity Governance, implement RBAC and SSO, and drive automation using Okta Workflows. This role blends agile project delivery with 3rd line suppor...
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Just Eat Takeaway.com
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Senior Golang Engineer - AI Product & Platforms
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Senior Golang Engineer sought for Citi’s AI Product & Platforms team in London. You will build production-grade, business-facing AI platforms from 0-1, architecting high-performance microservices and developer tools at planetary scale. Requires deep expertise in Go concurrency, RESTful/gRPC APIs,...
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Citi
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Senior Software Engineer
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Senior Software Engineer sought to shape the architecture and scalability of a cutting-edge AI-powered platform for global enterprise clients. You will own key components from design to deployment, leveraging Python, TypeScript, and AWS/GCP. This London-based role offers genuine influence over te...
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90000.00 - 100000.00 GBP / Year
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Data Idols
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Senior Low Latency Engineer
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Senior Low Latency Engineer sought for a London-based HPA team to design and optimize algorithmic trading systems. You will lead Java, C++, and Rust development, leveraging expertise in market data, KDB, and kernel bypass technologies. This role demands deep knowledge of event-driven microservice...
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Citi
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Senior Software Engineer, Web, Global Exchange Operator
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Senior Software Engineer sought by a global exchange operator to join their London-based web team. You will build and maintain high-traffic, mission-critical systems for European equities venues. Requires 5+ years of full-stack experience with Python, JavaScript, and Django. This role offers the ...
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96000.00 GBP / Year
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Signify Technology
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Mechanical Engineer - Water / Wastewater (Senior / Principal)
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Lead national mechanical engineering for major UK water/wastewater infrastructure as a Senior/Principal Engineer. Drive design excellence across AMP8 programmes, lead multidisciplinary teams, and shape best practice. Based in London with hybrid working, 26+ days leave, and chartership support. Id...
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Egis in the UK
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Senior Software Engineer - Payments
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Senior Software Engineer sought to design and scale critical payment infrastructure for a leading global fintech. You will build high-volume, multi-currency transaction systems using distributed systems and APIs. This role demands deep backend expertise in fintech or banking, with a focus on clea...
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United Kingdom, Greater London
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80000.00 - 100000.00 GBP / Year
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Harrington Starr
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GCP Senior Data Engineer
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Senior GCP Data Engineer sought to design scalable data models and distributed ETL pipelines on BigQuery. You will champion DataOps, mentor junior engineers, and bridge workstreams with the core platform. Requires advanced SQL, dbt, CI/CD, and dimensional modelling expertise. Based in London, thi...
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450.00 - 490.00 GBP / Day
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Arrows Groupe
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Senior Software Engineer, CalcGraphs - Vice President
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Senior Software Engineer, CalcGraphs – Vice President at Citi in London. Design and build the next-generation distributed calculation engine for the XiP platform. Requires deep Java expertise, Spring/Spring Boot, RESTful APIs, and large-scale system experience. Lead strategic improvements, coach ...
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Citi
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About the Senior Engineer role

Senior Engineer jobs represent the pinnacle of technical expertise and leadership within the engineering field. These roles are designed for seasoned professionals who possess deep, specialized knowledge and are entrusted with guiding complex projects, making high-stakes architectural decisions, and mentoring the next generation of talent. Unlike entry or mid-level positions, senior engineers are expected to operate with significant autonomy, translating broad business objectives into robust, scalable, and innovative technical solutions. They serve as the critical bridge between strategic vision and practical execution, ensuring that engineering outcomes align with long-term organizational goals.

Professionals in these roles typically shoulder a comprehensive set of responsibilities that extend beyond pure coding. A core duty is systems architecture and design, where they define the technical blueprint for major initiatives, selecting appropriate technologies and frameworks to ensure performance, security, and maintainability. They are deeply involved in solving the most challenging and ambiguous problems, applying advanced analytical skills to diagnose issues and devise elegant solutions. Leadership is a fundamental aspect, encompassing code and design reviews, technical mentorship for junior team members, and fostering a culture of engineering excellence and continuous improvement. Furthermore, senior engineers often own the entire lifecycle of critical system components, from conception and development through deployment, monitoring, and iterative enhancement.

The typical skill set for senior engineer jobs is both broad and deep. Mastery in one or more programming languages and relevant technology stacks is a given. However, what truly distinguishes a senior engineer is their proficiency in architectural patterns, such as microservices or event-driven design, and a strong grasp of cross-cutting concerns like security, scalability, and observability. They are expected to have extensive experience with modern development practices, including DevOps principles, CI/CD pipelines, infrastructure as code, and automated testing strategies. Equally important are the soft skills: exceptional communication to articulate complex ideas to technical and non-technical stakeholders, strategic thinking to anticipate future challenges, and a collaborative mindset to work effectively across multidisciplinary teams. A proven track record of driving projects to successful completion and a mindset geared towards innovation and efficiency are common requirements.

Ultimately, senior engineer jobs are for those who are not just builders but visionaries and stewards of technology. They play a crucial role in shaping the technical direction of products and services, mitigating risk, and ensuring that engineering practices evolve to meet emerging demands. For organizations, hiring for these positions is an investment in stability, innovation, and sustained competitive advantage. For engineers, these roles offer the opportunity to have an outsized impact, lead transformative work, and define the future of technology within their domain.