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    Senior Backend Engineer, Payments — Global APIs & Scale

    Proton is seeking a back-end developer for the Payments Team in Greater London. The role involves building features for Proton's products, optimizing user experience, and collaborating with various teams. The ideal candidate has proven back-end development experience, skills in high-performance solutions, and a ...

    Hybrid Cambridge Senior .NET Engineer | Cloud & APIs

    SoCode Recruitment is seeking a Senior Software Developer to join a global leader in industrial software in Cambridge. This hybrid position offers a salary range of £65,000 to £80,000. The role involves working with stakeholders to understand requirements, shape system architecture, and deliver scalable solution ...

    Senior Linux Systems Engineer for CDS & Modernization

    Booz Allen Hamilton seeks an experienced Linux Systems Administrator in the UK to design and maintain Cross Domain Solutions for the U.S. Federal Government. The role includes monitoring network performance, analyzing data for improvements, and mentoring team members. Required qualifications include 3+ years wit ...

    Senior C++/Rust Engineer WASM & XRPL Innovator

    A leading blockchain technology company in Greater London is seeking experienced Software Engineers to enhance the XRP Ledger's programmability and smart contract capabilities. Ideal candidates will have 5+ years of software development experience in modern C++ and Rust, with a passion for blockchain technology. ...

    Senior Graphics Engineer Canvas & High Perf Charting

    techstack Recruitment is looking for a Senior Software Engineer to work on a high-performance charting library used globally by thousands of developers. In this role, you'll design core features across rendering and animations, solve performance-critical problems, and take features from design to release. Candid ...

    Senior SRE & Data Platform Engineer AWS Databricks

    JPMorgan Chase seeks a Site Reliability Engineer in Greater London to develop technology products focused on data and analytics. Responsibilities include maintaining the AWS Databricks platform, driving continuous improvement, and collaborating with cross-functional teams. The ideal candidate will have over 10 y ...

    Senior .NET/C# Engineer: Build Scalable Backends

    TransPerfect is seeking a Software Engineer to join their TechOps team in Greater London. The role focuses on developing scalable applications, collaborating with product managers, and mentoring junior engineers. Candidates should have a degree in computer science and over 5 years of experience in software devel ...

    Senior Front End Engineer: React & Svelte UI

    Eaglecliff Recruitment is seeking a Senior Front-End Engineer in Greater London. Join a global Energy company as they transform from a traditional Oil & Gas enterprise into a leading Energy provider. In this role, you'll design and develop user-centric web applications using Svelte and TypeScript, focusing on in ...

    Senior Cloud Engineer Remote | AWS, Kubernetes Leader

    Totara is seeking a Senior Cloud Engineer in Greater London to design and maintain cloud infrastructure for its Totara Hosting platform. Ideal candidates will have proven experience with AWS services, hands-on expertise with Kubernetes, and a solid understanding of Terraform. This dynamic role includes collabora ...

    Senior Software Engineer, R&D Tax Tech

    Joingelt is looking for a Senior Software Engineer in Nottingham, UK. As part of the R&D team, you will design and deploy tax automation services, ensuring accuracy in advanced tax models while working across the stack with a focus on backend systems. Candidates should have 5+ years' experience with Typescript, ...

    Senior JavaScript Engineer — AI APIs & Cloud (Hybrid)

    Immediate is seeking a Senior JavaScript Engineer in Greater London for a 6-month fixed term contract. The successful candidate will work on their digital publishing platform, developing and maintaining scalable APIs and AI-powered services. Applicants should have experience in Node.js, TypeScript, and cloud arc ...

    Senior Infrastructure Engineer (Azure/Intune/M365/Exchange)

    Contract Senior Infrastructure Engineer (Azure / Intune / Windows 365 / Exchange) Location Berkshire 1 or 2 days a week, rest remote. Contract Duration: 4-6 months initially, will be extended. Rate: £425 day rate, IN scope of IR35. Start Date: ASAP Client will wait for the r ...

    Senior Analytics Platform Engineer – Remote, Scalable Data

    Our Future Health in Greater London is looking for a Senior Analytics Platform Engineer to build analytics-ready data products and coach others in best practices. The role involves designing data models in Snowflake, contributing to analytical standards, and collaborating with researchers for impactful analytics ...

    Senior Robotics Software Engineer – On‑Site Oxfordshire

    Autodiscovery is looking for a full-time Senior Robotics Software Engineer in Oxfordshire. The successful candidate will design and develop software for innovative robotics systems, lead implementation, and mentor junior members. The role requires at least 2 years of experience in software development, proficien ...

    Japanese speaking Senior Linux Infra Engineer – London

    Centre People is recruiting a Senior Infrastructure Engineer for their London office. The ideal candidate should have strong skills in Linux and Windows server management, along with WAN and LAN troubleshooting capabilities. Responsibilities include providing technical escalation for incidents, participating in ...

    Senior Water Infrastructure Engineer – Potable Systems Lead

    Energy Jobline CVL is seeking a Senior Infrastructure Engineer to join the team in the UK, specifically in London, Leeds, or Manchester. The successful candidate will manage multidisciplinary projects focused on potable water design, ensuring compliance with regulations. Ideal applicants will have a solid backgr ...

    Senior Frontend Engineer: React/TypeScript & Gen AI

    hackajob is collaborating with J.P. Morgan to recruit a Software Engineer III in Greater London. This front-end position emphasizes AI and involves designing and delivering scalable technology products. The role requires expertise in HTML, CSS, JavaScript, React, and TypeScript with a solid understanding of perf ...

    Senior Firewall Engineer Fortinet & Juniper L3 Expert

    Whitehall Resources is looking for an experienced Firewall Engineer to join their team in South Yorkshire for an initial 6-month contract. In this role, you will design, implement, and support enterprise network security solutions, focusing on Fortinet and Juniper firewalls. Responsibilities include providing Le ...

    Senior Platform Engineer Cloud, CI/CD & Automation

    Anson McCade is looking for an experienced Senior Platform Engineer in Corsham, UK, to join their forward-thinking engineering team. The role involves designing and operating scalable cloud platforms, influencing technical direction, and ensuring high-quality solutions through collaboration. Ideal candidates sho ...

    Senior Database Engineer AWS, SQL Server & PostgreSQL

    Peaple Talent is seeking a Database Data Engineer in London to enhance and scale their data platforms for a leading financial services firm. This role requires deep experience in database technologies including SQL Server and PostgreSQL, with a focus on AWS services. You will design and optimize database solutio ...

    Senior AWS Platform Engineer: Landing Zone & Governance

    Arcus Search is seeking a Senior Engineer to design and evolve AWS Landing Zones at scale. This role demands proven experience in AWS multi-account architectures and Terraform capabilities. Key responsibilities include implementing AWS Control Tower strategies, building network foundations, and maintaining gover ...

    Senior Applied Machine Learning Engineer Catalogue Intelligence

    Who are OnBuy? OnBuy are an online marketplace who are on a mission of being the best choice for every customer, everywhere. We have recently been named one of the UK's fastest-growing tech companies in the Sunday Times 100 Tech list. All achievements we are very proud of, but we ...

    Senior Kubernetes Platform Engineer — Lead, Scale & Automate

    LinuxRecruit is looking for a Kubernetes Engineer in Manchester to take ownership of optimizing Kubernetes infrastructure at scale. You will refine CI/CD pipelines, automate deployments, and ensure peak uptime. The role involves hands-on experience with tools and technologies, plus opportunities for training and ...

    Senior Power Platform Engineer: Lead, Build & Mentor

    Kainos is seeking a Senior Power Platform Engineer (Senior Associate) located in Budock Water, England. In this role, you will develop high-quality Power Platform solutions, mentor junior team members, and facilitate communication with stakeholders. You must be proficient in modern software applications, underst ...

    Senior React/TypeScript Frontend Engineer Hybrid Bristol

    Coltech is hiring a Senior Frontend Software Engineer (React) in the West of England with a hybrid working model requiring 2 days a week in Bristol. The role requires strong experience in building accessible and scalable frontend applications and a test-driven development mindset. The ideal candidate will take t ...

    Senior OT Network Engineer — Global ICS Networking

    Cyber Fraud Centre is seeking a knowledgeable networking professional to work on complex OT Network Integration projects in Aberdeen. Candidates will apply in-depth networking knowledge, collaborate with clients, and influence decisions within a diverse and inclusive environment. This opportunity includes a comp ...

    Senior Data & AI Engineer — Lead Clinical Pipelines

    University College London Hospitals NHS Foundation Trust is seeking a Senior Software Engineer to lead the design and delivery of secure, high-quality data pipelines aimed at transforming NHS data into research-grade assets. This role involves managing a small team, evolving the technical roadmap for data engine ...

    Senior Cloud Platform Engineer – Security, IAM & Automation

    The Walt Disney Company is looking for a Senior Software Engineer to join the Production Platform Foundations team in Manchester. This role focuses on cloud security, AWS service optimization, and automation tools development. Candidates must have significant AWS experience, knowledge in IAM administration, and ...

    Senior Software Development Engineer in Test (Compliance)

    About us @Symphony Secure. Connected. Intelligent. Symphony is an AI-powered communication and technology company fueled by interconnected platforms: messaging, voice, directory and analytics. Our end-to-end encrypted technologies enable over 1,400 institutions to accelerate AI im ...

    Senior Go Backend Engineer – Hybrid London (Visa)

    trg.recruitment is hiring a Golang Developer in Greater London to enhance back-end capabilities for financial services platforms. This role emphasizes greenfield projects and transformation work, and requires at least 5 years of software engineering experience with 2-3 years in Golang. The position offers a hybr ...

    Remote Senior Open Source AI Engineer (Contract)

    Mercor is seeking a Senior Open Source Engineer to connect elite talent with leading AI research labs. This remote role focuses on integrating new code into open-source projects and enhancing AI model training. Candidates should have a strong track record of managing Pull Requests and significant GitHub contribu ...

    Senior Software Engineer – AI Driven Global Marketplace

    Bounce Digital is seeking backend-leaning product engineers to join their hybrid team in London. This role offers the chance to own problems end-to-end, including search, payments, inventory, logistics, and AI integrations. Ideal candidates should be comfortable working in ambiguity and have significant experien ...

    Senior Software Engineer: Architect Scalable Web Apps

    TulipTech is seeking a Senior Software Engineer to join their UK team. The role involves designing and building modern web applications with a focus on collaboration across cross-functional teams. Ideal candidates should have over 5 years of software development experience, with strong skills in Node.js, React, ...

    Senior Software Engineer Test Equipment & CI/DevOps

    Eclectic Recruitment Ltd is seeking a Senior Software Engineer to support the development of advanced test equipment software for missile systems. You will design software solutions primarily in C and C++, work in Agile teams, and apply DevOps principles. The ideal candidate has strong experience in software eng ...

    Senior Software Engineer Real Time AI SaaS

    ConnexAI in Manchester seeks a Senior Software Engineer to shape their digital presence by developing sophisticated SaaS applications for real-time systems in the AI sector. Ideal candidates will have extensive experience with Node.js, TypeScript, and a strong understanding of Linux Systems Administration. The r ...

    Senior Backend Engineer Cloud Native SaaS (AWS)

    djr is seeking a skilled engineer to design and build scalable cloud-native applications using .NET and AWS. The role involves modern distributed systems and mentoring within a high-calibre engineering environment. Candidates should have strong .NET/C# capabilities and commercial AWS experience, as well as a pro ...

    Senior Rails Engineer Integrations & Parsers (Hybrid UK)

    hackajob is seeking a Senior Software Engineer in Wallingford, Oxfordshire, to develop and maintain integrations for our data insights platform. This hybrid position requires expertise in Ruby on Rails and API integrations, with a strong focus on building data parsers and transformation logic. You will work clos ...

    Senior Software Engineer, Scientific Instrumentation R&D

    OMEGA, Inc. is looking for a Senior Software Engineer in Malvern, UK, with at least 5 years of experience in software development. The ideal candidate will develop software for advanced scientific instruments, emphasizing C++ and C#/.NET. This role involves addressing technical challenges, mentoring team members ...

    Senior Go Backend Engineer — Energy Trading & Storage

    Revoco is seeking a Senior Engineer to solve complex challenges in energy storage and grid-scale battery behavior. This role involves backend development primarily using Go, with flexibility to work in ambiguity and lead projects from design to execution. The candidate should ideally work in a hybrid model, comm ...

    Senior Software Engineer, Real World Robotics Platform

    ISL Talent is seeking a Senior C# Developer for Insphere in the UK. This role is not standard and offers the chance to work on a real-world engineering product, contributing to architecture and technical direction while engaging with robotics and measurement instruments. You'll enjoy flexibility with a hybrid wo ...

    Senior FPGA & Embedded Systems Engineer Broadcast Tech

    Zetron, Inc is seeking a Broadcast Product Developer in Whiteley, England, to design and develop advanced broadcast solutions. The role involves working with FPGA technology and embedded software development in Python and C++. Candidates should have strong knowledge in FPGA design, software engineering, and digi ...

    Senior IC Design Engineer HDL/FPGA, Prototyping

    Newton Colmore is seeking a Senior Electronics Engineer in Cambridge to work with a leading technology innovator. Responsibilities include the design and development of new ideas throughout the product lifecycle, from concept to production. Candidates must have experience with toolchains like Vivado or Quartus, ...

    Senior Design Engineer: 3D CAD, FEA & BOMs

    LB Bentley is seeking a Design Engineer to join their team in Stroud, England. The role involves interpreting customer specifications to create product designs and overseeing engineering design tasks. Responsibilities include producing 3D models, engineering drawings, and ensuring compliance with design codes. T ...

    Senior Electronic Design Engineer Safety Critical Systems

    FLIR Systems, Inc. in Lincoln is seeking a Senior Electronic Design Engineer to lead design and development efforts for safety-critical electronic products. The ideal candidate will have 5-10 years of experience in electronic design, proficiency in CADSTAR and LTSpice, and the ability to perform reliability asse ...

    Senior AI Pre Sales Engineer — Enterprise Solutions

    Uniphore Technologies Inc. is looking for a Senior Pre-Sales Engineer to support enterprise sales efforts in London. This role requires over 6 years of experience in pre-sales or technical consulting, with a strong understanding of AI technologies. The ideal candidate will partner with Account Executives to driv ...

    Senior Mechanical Engineer & Team Lead Digital & Sustainable

    MWH Treatment is seeking a Lead Mechanical Engineer for the Peterborough office, offering hybrid working arrangements. The successful candidate will oversee project delivery, ensuring quality and efficiency while mentoring junior engineers. A bachelor's degree in mechanical engineering and experience in the wate ...

    Senior AI Engineer: Production LLM & RAG Platform

    Harrington Starr is looking for a Senior AI Engineer based in Greater London to design and deploy production-grade LLM systems for investment decision making. Ideal candidates should have extensive AI product experience, strong software engineering fundamentals, and capabilities in building robust systems. The r ...

    Senior Production AI Engineer: LLMs & Enterprise Impact

    Xcede is recruiting for a role in Greater London focused on designing and building production generative AI applications for large enterprise clients. You will have end-to-end ownership of projects and serve as a technical lead within engineering teams. The ideal candidate has strong Python engineering skills, h ...

    Senior PAM Engineer AI Driven Access Security

    GSK is seeking a Senior Engineer, Privileged Access Management (PAM) in London to design and manage enterprise PAM solutions. The role encompasses leading PAM implementations, developing automation, and ensuring alignment with GSK's security policies. The ideal candidate should have a Bachelor's degree in Comput ...

    Full Stack Engineer, Senior Specialist (Talent Pool)

    Full-Stack Engineer (Senior Specialist) Location: Manchester, United Kingdom. Role Overview The role focuses on strong data analysis skills, logical thinking, problem solving, and system design to develop scalable solutions and AI-enabled capabilities across data platforms and a ...

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