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Senior Engineer United Kingdom, London Jobs

315 Job Offers

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Senior Back-End Engineer
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Senior Back-End Engineer role at Preply in London. Build Python/Django services, design APIs and integrations, and guide the team on technical decisions. Requires high-scale architecture experience and hands-on Agentic AI expertise.
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Preply
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Senior Machine Learning Engineer, AV Core
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Lead ML data enrichment and safety-critical model work at Wayve's AV Core in London. Senior role requires Python, PyTorch, distributed training and large-scale inference expertise. Hybrid, equity, visa support.
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Wayve
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Senior Technical Support Engineer (Customer Experience Team)
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Join Heat Geek as a Senior Technical Support Engineer in London, resolving complex heating escalations and driving low-carbon heating adoption. Requires deep heating systems expertise, fault-finding skills, and strong customer focus.
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Heat Geek
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Senior Software Engineer (AI/Data)
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Codat seeks a Senior Software Engineer in London to build its Advisory Intelligence Platform, designing semantic, signal and reasoning layers that power AI-driven banking insights. Requires strong C#, Python and production data systems experience.
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Codat
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Senior Platform Software Engineer I
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Join Braze as a Senior Platform Software Engineer in London, running Valkey, Memcached and Elasticsearch at massive scale on Kubernetes. Build automation and observability tooling with Go, Python or Ruby.
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Braze
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Senior Android Engineer
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Motorway seeks a Senior Android Engineer in London to lead cutting-edge feature development using Kotlin and Jetpack Compose. Build high-scale mobile apps, evolve Server-Driven UI, and enjoy hybrid work, equity, and strong benefits.
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Motorway
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Senior Python Engineer – Engineered Index & Rates
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Senior Python Engineer role in London for FICC index and rates platforms. Requires 7+ years hands-on Python, strong SQL, Linux and CI/CD skills. Build scalable quantitative tools with hybrid benefits and wellbeing support.
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Lseg
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Senior Structural Engineer
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Senior Structural Engineer role in London delivering structural designs across commercial, industrial, logistics and data-driven projects. Requires UK design standards expertise, Eurocodes knowledge and proficiency in AutoCAD, Civil 3D and BIM.
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Alexander Associates
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Senior AI Engineer (AI Platform)
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ASOS seeks a Senior AI Engineer in London to build and scale shared AI platform capabilities on Azure, focusing on agentic AI, LLM orchestration and reusable frameworks. Requires strong Python, GenAI production experience and CI/CD skills.
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ASOS
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Senior Data Platform Engineer
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CoMind seeks a Senior Data Platform Engineer in London to build reproducible pipelines, evaluation harnesses and cloud tooling for scientists advancing non-invasive brain monitoring. Deep Python, AWS and IaC skills required.
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CoMind
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Senior Machine Learning Engineer (Large Systems)
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Senior ML Engineer role in London, Bristol or Cambridge scaling state-of-the-art AI models across thousands of accelerators. Requires PyTorch/JAX, Python or C++, and deep learning optimisation expertise. Flexible working, pension and phantom equity.
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Graphcore
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Senior Virtualization Engineer
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DRW seeks a Senior Virtualization Engineer in London to own and automate its OpenStack platform. Requires deep Linux, networking, and IaC expertise plus Python or Golang scripting. Coach engineers and resolve critical trading issues.
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DRW
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Senior Engineer, iOS - Instant Rips
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Fanatics seeks a Senior iOS Engineer in London to build live-break features like auctions, streaming and marketplace. Requires 5+ years Swift, SwiftUI, TCA, GraphQL and CI/CD expertise.
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Fanatics Collectibles
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Senior Engineer, Android - Instant Rips
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Fanatics seeks a Senior Android Engineer in London to build high-scale consumer apps with Kotlin, Jetpack Compose, and Coroutines. Own complex features end-to-end and shape mobile architecture on a global sports platform.
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Fanatics Collectibles
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Integration & Data Platform Engineer, Senior Analyst
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Crown Agents Bank seeks a Senior Analyst Integration & Data Platform Engineer in London to build AWS-based integrations and cloud-native components. Requires 2-3 years hands-on AWS experience, Terraform and CI/CD skills.
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Crown Agents Bank
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Senior Flutter Engineer
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AJ Bell seeks a Senior Flutter Engineer in London (hybrid) to build a next-gen investing app for 500,000+ customers. Requires strong mobile DevOps, architecture skills, and CI/CD expertise. Benefits include 26 days holiday, 7% pension, and share schemes.
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United Kingdom, London / Hybrid
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AJ Bell
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Senior Optical Engineer
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Lead optical design for satellite laser ranging systems at a venture-backed spacetech company in London. Requires expertise in Zemax or CODE V, high-power laser optics and hands-on metrology. EMI share options included.
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Foundational
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Senior AI/ML Engineer
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Senior AI/ML Engineer role in London to own models and pipelines turning weather and satellite data into risk and market signals. Requires deep learning, Python scientific stack (PyTorch, xarray) and end-to-end delivery.
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Treefera
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Senior Data Engineer (Data Platform)
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Senior Data Engineer role in London to build and scale a modern data platform. Requires 5+ years in data engineering, strong SQL and Python/Java, plus Snowflake, Kafka, dbt, Airflow, Kubernetes and Terraform.
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Teya
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Senior Product Engineer
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Join Odeko as a Senior Product Engineer in London and own product outcomes end-to-end. Work across TypeScript, React Native, Ruby/Rails and AWS with AI-native development. Competitive pay, equity and growth await.
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Odeko
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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.