Principal Software Engineer
Hackajob Ltd
GloucesterOur client is a major defence and aerospace company.Date Posted:2026-08-06Country:United KingdomLocation:Gloucester, South GloucestershirePosition Role Type:Onsite...Read More>>.
Hackajob Ltd
GloucesterOur client is a major defence and aerospace company.Date Posted:2026-08-06Country:United KingdomLocation:Gloucester, South GloucestershirePosition Role Type:Onsite...Read More>>.
Hackajob Ltd
KnutsfordOur client is a leading British bank.Join us as a Senior Software Engineer in the Event Fabric team, where you will play a key role in designing, building, and evolving a core enterprise platform that enables event-driven, cell-based archit...Read More>>.
Sirius Digital
PortsmouthSenior Software EngineerSalary: Negotiable plus benefits, pension (7% contribution), 25 days holiday & life insuranceWe are looking for senior software engineers with a range of levels of...Read More>>.
Recruit Mint
PeterboroughEmbedded Software EngineerWrite the embedded C behind smart metering devices shipping over a million units, with a genuine path towards leading the firmware team. This is an Embedded Software...Read More>>.
KO2 Embedded Recruitment Solutions LTD
RuncornSenior Embedded Software EngineerLocation: Runcorn, with flexible hybrid working from home Salary: £60,000 - £70,000 DOE, plus 8% bonusAbout the company...Read More>>.
JAM Recruitment Ltd
FrimleyPrincipal Engineer - Software Engineering (Specialist Software)Frimley based role (Hybrid working)£67.47 per hour Umbrella Inside IR3512 Month Contract initially. This is a great opportunity to work...Read More>>.
FundApps
LondonOverview In this role you will contribute to a fast-growing engineering team, building and improving software that monitors trillions in assets daily. You will own your work from day one, collaborating with product and engineering to delive...Read More>>.
JP Morgan Chase
LondonOverview As Lead Software Engineer in Corporate Technology, you drive high-impact software solutions in an agile team responsible for secure, scalable technology. You will work across multiple technical areas to deliver trusted products tha...Read More>>.
Easyjet
LondonOverview As Principal Software Engineer in the eCommerce Platform Delivery team, you lead and shape technical strategy across multiple squads to deliver robust, secure, and scalable systems. You guide architecture and engineering standards,...Read More>>.
Understanding Recruitment
LondonOverview In this role you will own and evolve core production software in C++, helping a research-driven AI startup scale to customer deployments. You will shape the platform architecture, coordinating across the computational engine, Pytho...Read More>>.
St George’s University of London
LondonOverview In this role you will join the Engineering Department to help build a web-based Data Repository for HS2, enabling collection, management and sharing of monitoring data. You will contribute to a high-profile infrastructure project w...Read More>>.
Client Server
LondonOverview In this remote-first role, you build and own production-grade AI systems and the infrastructure behind a conversational AI platform. You’ll design scalable backend services and integrate LLMs with third-party tools to deliver rel...Read More>>.
BAE Systems
FiltonOverview In this role you will develop mission-critical software for the Eurofighter Typhoon, collaborating with systems and test engineers to deliver high-performance, safety-critical aerospace software across the full lifecycle. You’ll...Read More>>.
Wolters Kluwer
LondonOverview As Lead Software Engineer (DevSecOps), you will drive hands-on delivery of automated, secure software delivery capabilities and platform automation. You lead a DevSecOps and platform automation team, transforming strategy into prod...Read More>>.
Citigroup
LondonOverview As a senior architect and developer in Citi’s High Performance Architectures team, you will build and evolve low-latency trading and market data systems. You’ll work hands-on on the Rust/Java codebase to deliver fast, reliable...Read More>>.
Anaplan
YorkOverview In this Engineer IV role, you will design and deliver platform capabilities powering Anaplan’s enterprise-scale APIs, edge routing, and developer acceleration. You will build high-throughput backend engines, drive multi-tenant is...Read More>>.
ASOS
LondonOverview In this Senior Software Engineer role within ASOS FinOps in London, you will own and evolve the platform that makes cloud costs visible, attributable and actionable. You will build data products and tooling to help engineering team...Read More>>.
G Research
LondonOverview As a Platform Software Engineer in the Storage Engineering team, you will help turn manual infrastructure into self-service storage products that power G-Research’s research platform. You’ll build services and APIs, automate wo...Read More>>.
Method Resourcing
BristolOverview In this role you will build and maintain reliable backend services and data pipelines that support forecasting, trading and daily business operations for a growing energy trading business. You will work closely with engineers and t...Read More>>.
American Express
Burgess HillOverview As a member of the Digital Payments Engineering team, you will shape mobile payment experiences for tens of millions of cardholders. You’ll craft secure, scalable payment apps and interact with product managers to define directio...Read More>>.
Pearson
RotherhamOverview In this role you will develop and maintain .NET backend services and React UIs for assessment platforms, leveraging cloud-native solutions. You will work with cross-functional teams to translate business needs into technical design...Read More>>.
InfoSum
LondonOverview As a Senior Backend Engineer, you will design and maintain scalable, high-performance backend systems that power InfoSum’s data collaboration platform. You’ll collaborate with frontend, product, and DevOps teams to deliver robu...Read More>>.
Intellectual Capital Resources
GloucestershireOverview In this role you will design and evolve real-time, map-based interfaces that power immersive dashboards and mission tools for sensor-rich data. You’ll drive a responsive, data-heavy UI that works across platforms, balancing detai...Read More>>.
Intellectual Capital Resources
CambridgeshireOverview As a GUI Software Engineer you will build cross-platform desktop software for Linux, Windows and macOS, delivering robust, user-focused applications. You will own hands-on development and collaborate across software layers, writing...Read More>>.
Dyson
MalmesburyOverview In this role you will lead embedded software for Dyson’s power electronics systems, shaping motor drives, power conversion and battery management in a multidisciplinary lab setting. You will prototype, evaluate and optimize softw...Read More>>.
DRW
LondonOverview In this role you will empower DRW’s business users by developing and supporting tools, guidance, and applications that enable self-service technology. You’ll balance legacy systems work with selective green-field development, c...Read More>>.
Aveva Group
CambridgeOverview In this role, you lead the design and delivery of AVEVA CONNECT Core Services on Microsoft Azure, shaping secure, scalable cloud platform capabilities. You will partner with architects, product teams and engineers to translate tech...Read More>>.
Neuberger Berman
LondonOverview In this role you will design, develop, and deploy AI-powered capabilities that drive business impact within Neuberger’s Fixed Income Technology team. You’ll collaborate with business users, engineering, and data teams to delive...Read More>>.
Intellectual Capital Resources
BristolOverview In this role, you will design and develop embedded software for a portfolio of products within a global safety and security-focused company. You will work with industry experts to deliver high‑quality, reliable software on ARM pl...Read More>>.
elastic
Overview In this role you lead security architecture for Elasticsearch, delivering high-performance authentication, authorization, and tenant isolation at scale. You will shape core security features and collaborate with cross-functional te...Read More>>.
Intellectual Capital Resources
LondonOverview As a Systems Software Engineer, you will build the software foundation that enables integration of our novel AI hardware into real workloads. You will own the runtime, SDK and APIs interfacing with FPGA/ASIC hardware, focusing on p...Read More>>.
Cboe Exchange
LondonOverview In this hybrid role, you’ll ensure the quality and reliability of Cboe Europe’s trading infrastructure through automated testing while leading build and release improvements. You’ll work with cross‑functional teams across t...Read More>>.
Intellectual Capital Resources
BristolOverview As a Principal Embedded Software Engineer in Bristol, you will lead architecture, design, and implementation of safety‑critical embedded software. You’ll mentor junior engineers and drive high-quality, compliant software in pro...Read More>>.
American Express
LondonOverview Join American Express as a Staff Software Engineer to shape the enterprise platform that empowers hundreds of engineering teams. You will define the technical strategy for platform engineering, build scalable and secure services, a...Read More>>.
Intellectual Capital Resources
LondonOverview In this role you will design and optimize embedded Linux software and host components for high-speed networking and photonics-based systems. You will work closely with hardware and systems teams to implement low-level software, ker...Read More>>.
Intellectual Capital Resources
LondonOverview In this Backend Engineer role, you will design and scale backend architectures for large-scale, real-time data systems that connect devices with cloud and data infrastructure. You’ll build robust APIs, optimize databases, and boo...Read More>>.
Wise
LondonOverview As a Staff Backend Engineer at Wise, you shape the backbone of our KYC and onboarding platform, building scalable, secure services that power verification for millions of customers. You’ll lead technical direction, mentor enginee...Read More>>.
Intellectual Capital Resources
GloucestershireOverview In this role you will design and implement REST APIs and web microservices to support IoT data workflows. You will build data ingestion pipelines, manage cloud infrastructure, and optimise databases to scale the product. You’ll i...Read More>>.
Intellectual Capital Resources
CambridgeshireOverview In this role you will guide the design and delivery of embedded software-enabled systems, working across software, electronics, systems, and mechanical engineering. You’ll help shape architectures, mentor teams, and solve integra...Read More>>.
Client Server
LondonOverview In this role you will develop internal platforms using Python, Django and SQL to support business workflows. You will collaborate with stakeholders across the business to translate requirements into scalable tech solutions. The pos...Read More>>.
Marks & Spencer
Overview In this role you will design, build and scale backend systems that support M&S’s international pricing across stores and online markets. You’ll work with cross-functional teams to deliver robust, secure solutions and champion e...Read More>>.
Intellectual Capital Resources
LondonOverview In this role you design, optimize, and scale high-performance GPU software to maximize hardware utilization. You will work closely with hardware-focused teams to tackle performance and scalability challenges on modern GPU platforms...Read More>>.
Intellectual Capital Resources
CambridgeshireOverview In this role you will contribute to a global, public-facing web/cloud platform by designing, building and maintaining scalable backend services. You will join cross-functional teams to shape architecture and deliver robust systems...Read More>>.
Sony Interactive Entertainment America
LondonOverview In this senior role, you will co-lead the design and delivery of critical ML inference components powering PlayStation runtime systems. You’ll influence architecture and strategies across global teams while contributing hands-on...Read More>>.
GitHub
Overview As a Staff Software Engineer on GitHub’s Traffic Team, you will help maintain and evolve the load-balancing and traffic-management platform that underpins global-scale software delivery. You’ll work with a distributed, remote-f...Read More>>.
Starling Bank
LondonOverview In this role you will help build and support Starling’s core financial systems, including bank ledgers and their integrations. You’ll work within the Finance Engineering team to ensure transactions are recorded accurately and p...Read More>>.
Kraken
Overview In this role you build and own high-quality React Native features end to end for Kraken’s consumer mobile app, helping expand into Asian markets. You partner with Product and Design to shape intuitive, data-driven financial exper...Read More>>.
Client Server
LondonOverview In this role you will design, build and operate production software that applies Python, APIs and AI to real business problems in a rapidly scaling renewable energy company. You’ll prototype quickly, collaborate with AI leads and...Read More>>.
Marsh & McLennan Companies
LondonOverview In this role you will lead the UK CAT team, delivering analytics and technology products for Mercer. You’ll own technical direction across a distributed London–India engineering setup, partnering with risk advisory stakeholders...Read More>>.
Citigroup
LondonOverview In this role you’ll join Citi’s GenAI-focused engineering team to build and support Generative AI platforms and services. You’ll learn from senior engineers while contributing to backend, distributed systems, and cloud-native...Read More>>.