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Senior Engineer United Kingdom, London Jobs

315 Job Offers

Principal AI Software Engineer, Senior Vice President
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Principal AI Software Engineer, SVP role in London. Architect scalable backend systems for advanced AI tools, leveraging expert Python, FastAPI, and Generative AI frameworks like LangChain. Requires deep ML knowledge and full lifecycle ownership. C++ expertise is a bonus. Benefits include 27+ day...
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Citi
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Senior Backend Python Engineer - AI Platform
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Senior Backend Python Engineer sought to architect scalable backend systems for a global financial institution’s AI Platform in London. You will design and deploy production-grade code using FastAPI, Kubernetes, and CI/CD, focusing on knowledge graph automation in Credit Risk. Requires deep Pytho...
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Citi
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Senior AI Engineer
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Senior AI Engineer sought to lead enterprise‑grade AI and generative AI solutions in London. You will design scalable systems using Python, Azure AI, LLMs, and RAG architectures, while owning MLOps/GenAIOps practices. This role demands strong technical leadership, mentoring, and collaboration in ...
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LegalAndGeneral
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Senior Systems Engineer
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Senior Systems Engineer sought for Akuna’s London team. You will architect and maintain global infrastructure, leveraging advanced Linux kernel tuning, virtualization, and containerization. Expertise in Ansible, Prometheus, and Python automation is essential for driving large technical projects. ...
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AKUNA CAPITAL
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Senior Fire Engineer
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Senior Fire Engineer sought for a growing London consultancy delivering complex fire safety schemes across the UK. You will produce fire strategies, manage projects, and mentor junior staff, leveraging 4-5+ years’ experience and IFE membership. The role offers a 10% employer pension, private heal...
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60000.00 - 75000.00 GBP / Year
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Brandon James
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Senior Earthing & Bonding Engineer
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Senior Earthing & Bonding Engineer sought by Egis UK to lead E&B design for rail systems, stations, and depots in London. Requires 10+ years’ experience, expertise in BS/EN standards (EN 50122, BS 7671), and stray current mitigation. Key role involves technical design, CDEGS modelling, and multi-...
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Egis in the UK
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Senior Mechatronics Engineer
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Senior Mechatronics Engineer sought to develop precision motion and control systems for next-gen data storage hardware in London. This role requires 3–5 years’ experience in motor control, embedded C/C++, and real-time systems. Join a multidisciplinary R&D team transitioning from prototype to pro...
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55000.00 - 65000.00 GBP / Year
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Premier Group
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Senior Algo Trading Software Engineer (VP)
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Senior Algo Trading Software Engineer (VP) at Citi in London. Engineer high-performance, low-latency electronic execution systems using Java, C++, or Rust. Collaborate with traders and quants to drive innovation in global finance, leveraging AI-powered tools and Agile practices. Enjoy 27 days lea...
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Citi
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Senior Ruby On Rails Engineer
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Senior Ruby on Rails Engineer sought for a hands-on technical leadership role in London, building scalable B2B SaaS platforms. You will own backend architecture, optimize high-volume transactional workflows, and mentor a team. Key requirements include deep Rails, PostgreSQL, Redis, Sidekiq, and A...
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Fynity
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Senior Low Latency Engineer
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Senior Low Latency Engineer sought by Citi in London to build mission-critical Java frameworks for algorithmic trading. You will work on microservices-based event sourcing systems with 10-100 microsecond response times, leveraging deep expertise in JVM, Linux, and kernel bypass technologies like ...
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Citi
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Senior Local Government Infrastructure/Cloud Engineer
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Senior Local Government Infrastructure/Cloud Engineer needed in London to lead on-prem to cloud migration. You will provide expert support, design, and management of hybrid environments including Azure AD, DNS, and disaster recovery. This role requires advanced knowledge of enterprise infrastruct...
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Morson Talent
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Full Stack Engineer - AI Enabled – Senior Vice President
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Senior Vice President Full Stack Engineer sought by Citi in London to lead AI-enabled enterprise solutions. This role demands deep expertise in Java, Angular, microservices, and event-driven architectures (Kafka). You will design intelligent agents using agentic AI, driving digital transformation...
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Citi
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Senior Security Engineer (Cloud & Kubernetes)
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Senior Security Engineer (Cloud & Kubernetes) sought for a major cyber transformation in London. This hands-on role involves securing Kubernetes, performing cloud security assessments, and hardening CI/CD pipelines. You will own greenfield security engineering initiatives, shaping the firm’s plat...
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Iceberg Cyber Security
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Senior Data Engineer
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Senior Data Engineer needed for a London-based Challenger Bank on a long-term contract. You will design and maintain an on-premise data warehouse, building robust ETL/ELT pipelines with Python, Apache Airflow, and dbt. This role demands strong ownership of infrastructure-focused solutions in a no...
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Morson Talent
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Senior C# Engineer
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Senior C# Engineer sought by a London-based proprietary trading firm to drive greenfield projects using cutting-edge .NET technology. You will architect high-performance trading applications, collaborating with top engineers in a non-corporate culture. Requires deep C# expertise, SQL Server knowl...
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80000.00 - 120000.00 GBP / Year
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Harrington Starr
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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.