1 to 25 of 171 Principal Software Engineer Jobs in the UK

Principal Software Engineer Location: Belfast (Hybrid Working) Salary: Competitive, depending on experience Employment Type: Permanent, Full-Time Lead technical decisions. Shape engineering standards. Stay hands-on. Are you an experienced Software Engineer who enjoys solving complex technical challenges, influencing architecture and helping other engineers … their best work? An exciting opportunity has become available for a Principal Software Engineer to join a growing technology organisation in Belfast. This is an opportunity to take genuine ownership of technical direction, influence engineering practices and work on complex, business-critical software systems. Unlike traditional ...

Principal Software Engineer Salary: £75,000 – £85,000 + Benefits Location: Hybrid 1 day every other week – Milton Keynes We are currently looking for a Principal Software Engineer to join a growing, technology-led SaaS organisation that is investing heavily in its engineering capability … collaborative, forward-thinking engineering team where you’ll have genuine influence over technical direction rather than simply delivering features. Reporting into the CTO, the Principal Software Engineer will play a pivotal role in shaping software architecture, establishing engineering best practice, and mentoring other engineers across ...

Eaton are seeking an experienced Principal Software Engineer to join the engineering function. We are searching for a dynamic highly skilled Principal Software Engineer with a wide breadth of skills who is interested in applying those skills and furthering their development skillset … variety of software projects. As a Principal Software Engineer, you will be expected to derive requirements, produce software architecture, develop test specifications, perform coding, debugging and testing on a variety of platforms from microcontrollers, to asymmetric multi-processor systems. You will participate in all phases ...

Senior Principal Software Engineer page is loaded## Senior Principal Software Engineerremote type: Hybridlocations: Tewkesbury, GBR: Wolverhampton, GBRtime type: Full timeposted on: Posted Todayjob requisition id: R-26-17307Moog is a performance culture that empowers people to achieve great things. Our people enjoy solving interesting … working with us can mean deeper job satisfaction, better rewards, and a great quality of life inside and outside of work.**Job Title**:Senior Principal Software Engineer**Reporting To:**Director, Eng. Sys. Def. & Integ.**Work Schedule:**Hybrid – Tewkesbury, GBR**About Moog Aircraft Group**Moog Aircraft Group ...

## Principal Browser Software EngineerApply: Cambridge, Cambridgeshire, United Kingdom: Full time: Posted Today: 3168947Principal Browser Software Engineer**Description -**HP Wolf Security is changing the future of endpoint security through delivering secure PCs with advanced hardware-enforced security features. We are growing the R&D team … Cambridge, UK and we’re looking for Principal level browser software engineer to join the HP Wolf Security R&D team. You will be designing and developing our innovative security solution based on micro-virtualization and contributing to new features and products. To see what our engineering ...

Principal Software Engineer/Principal AI Engineer Are you excited about building intelligent systems powered by innovative AI technologies? Do you enjoy creating solutions that turn complex data into impactful outcomes? About the team Embedded Innovation Teams are cross-functional squads embedded within our segments … inside segment and function teams, improving the internal workflows that help our people deliver better outcomes for customers, faster. About the role As a Principal AI Engineer/Principal Software Engineer, you will be the technical lead for an embedded Innovation Squad, owning technical execution ...

Principal Software Engineer/Principal AI Engineer Are you excited about building intelligent systems powered by innovative AI technologies? Do you enjoy creating solutions that turn complex data into impactful outcomes? About the team: Embedded Innovation Teams are cross-functional squads embedded within our segments … inside segment and function teams, improving the internal workflows that help our people deliver better outcomes for customers, faster. About the role: As a Principal AI Engineer/Principal Software Engineer, you will be the technical lead for an embedded Innovation Squad, owning technical execution ...

inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Principal Browser Software Engineer Description - HP Wolf Security is changing the future of endpoint security through delivering secure PCs with advanced hardware-enforced security … features. We are growing the R&D team in Cambridge, UK and we're looking for Principal level browser software engineer to join the HP Wolf Security R&D team. You will be designing and developing our innovative security solution based on micro-virtualization and contributing ...

Principal Software Engineer Python AI - FinTech London, Greater London | £100k - £120k per year Principal Software Engineer/Developer (Python AI) London/WFH to £120k Do you have expertise with backend Python combined with a strong knowledge of Agentic AI? You could be progressing … your career at an established FinTech business specialising in automated investment reporting . As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python development with technical ownership. You'll lead projects end to end, shape architecture and drive ...

Principal Software Engineer/Developer (Python AI) London/WFH to 120kDo you have expertise with backend Python combined with a strong knowledge of Agentic AI You could be progressing your career at an established FinTech business specialising in automated investment reporting .As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python development with technical ownership. You'll lead projects end to end, shape architecture and drive the delivery of new product capabilities, working across backend engineering, data processing and complex financial systems.The business is also ...

Principal Software Engineer/Developer (Python AI) London/WFH to £120k Do you have expertise with backend Python combined with a strong knowledge of Agentic AI? You could be progressing your career at an established FinTech business specialising in automated investment reporting . As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python development with technical ownership. You'll lead projects end to end, shape architecture and drive the delivery of new product capabilities, working across backend engineering, data processing and complex financial systems. ...

Principal Software Engineer C++ (Cloud Video Framework) Contract : Full-Time, Permanent Working Location : Hybrid, 2 Days a week in the office, minimum Office Locations : UK/Hungary Join Our Team as a Principal Software Engineer in Cloud Video Framework at Hawk-Eye Innovations … systems trusted by leagues, federations, broadcasters, and millions of fans worldwide. Our Video And Graphics Team builds the backbone of Hawk-Eye, creating the software architecture, deployment systems, and operational tools that power our world-leading sports technology platforms.Joining our Video Review team, you will build intuitive replay platforms ...

Principal Software Engineer C++ (Cloud Video Framework) Contract : Full-Time, Permanent Working Location : Hybrid, 2 Days a week in the office, minimum Office Locations : UK/Hungary Join Our Team as a Principal Software Engineer in Cloud Video Framework at Hawk-Eye Innovations … systems trusted by leagues, federations, broadcasters, and millions of fans worldwide. Our Video And Graphics Team builds the backbone of Hawk-Eye, creating the software architecture, deployment systems, and operational tools that power our world-leading sports technology platforms.Joining our Video Review team, you will build intuitive replay platforms ...

Principal Software Engineer - Wealth Technology London, United Kingdom Job Description Who we’re looking for We are looking for an experienced Principal Full-Stack Software Engineer to design, build and operate production-grade capabilities across APIs, data products, enterprise integrations and tools used … agents. This is a senior individual-contributor role for an engineer who can take complex problems from first idea through design, implementation, release and ongoing support. You will remain strongly hands‐on while providing technical direction across teams. You will create reusable engineering patterns, make sound architectural trade-offs ...

Principal Software Engineer About the Role Our client is an innovative organisation developing advanced AI-driven robotics solutions for logistics, fulfilment and industrial automation. Its technology enables robotic systems to automate complex physical tasks in demanding, real-world environments. We are seeking a Principal Software Engineer specialising in Robotic Manipulation to provide technical leadership in the design, development and deployment of advanced robotic capabilities. In this role, you will shape software architecture, establish technical direction and develop robust software that enables robots to interact intelligently with their environments and execute complex ...

# Principal Software Engineer - Product PlatformsAlphaSenseSalary not statedFull-timeremote· leadUKgraphqlListed via Jobicy · posted 21 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionAbout AlphaSense:AlphaSense is the AI platform redefining market intelligence and workflow orchestration, trusted by thousands of leading organizations to drive faster … complexity and obtain accurate, real-time information quickly. For more information, visit www.alpha-sense.com. Come join us.About the Role:We’re looking for a Principal Software Engineer to help define and build shared, API-first product platforms at AlphaSense that power multiple product surfaces, integrations, and agentic ...

Selection changes the language of the page/content Principal Software Engineer - Marketing Technology London, England, United Kingdom Software and Services Imagine what you could do here. At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. You bring … passion and dedication to your job and there's no telling what you could accomplish.Apple is in search of an experienced Principal Software Engineer to join the Central Marketing's Marketing Enablement team in London to drive technical architecture vision for its marketing products. This ...

Principal Software Engineer | Python & AI | Belfast Love solving complex technical challenges? Want to have a real influence on how engineering is done, without stepping away from the code? I'm working with a really exciting technology company in Belfast that is continuing to invest in its engineering … team as it develops and scales its software platform. They're now looking for a Principal Software Engineer who can bring strong technical expertise, fresh ideas and a passion for building great software. This isn't a role where you'll spend your days sitting ...

Principal Software Engineer Position: Principal Software Engineer in Cambridge, United Kingdom – Hybrid. Employment type: Full Time. As part of the E3D development group, you’ll be responsible for maintaining and enhancing applications that support both desktop and cloud solutions. Key Responsibilities Design, develop … practices. Demonstrate sound decision making on individual and team workloads to ensure it is delivered in a timely manner. Essential Requirements Experience developing professional software applications using C++ and/or C#. Awareness of industrial engineering and/or factory plant design. Comfortable with source control systems ...

Principal Software Engineer (Contract) - Naval Radar BAE Systems (Defence Solutions) | Cowes, Isle of Wight | 6 months | Inside IR35 BAE Systems (Defence Solutions) is seeking an experienced Principal Software Engineer to support the development, maintenance and enhancement of advanced naval radar systems in service with … Royal Navy . Based full-time onsite in Cowes , you'll provide technical leadership across the software lifecycle, working within a large, established engineering environment. Key details Location: Cowes, Isle of Wight (full-time onsite) Contract length: 6 months initially IR35: Inside IR35 Rate: £54.57/hour PAYE ...

Principal Software Engineer (DevSecOps) - Salary Range: £54,000 - £70,000 Your Impact As a Principal Software Engineer (DevSecOps), you will play a key role in accelerating the delivery of secure, high-quality software across Leonardo's defence and security programmes. You will help … shape and evolve our enterprise DevSecOps capability, enabling teams to deliver features and updates rapidly, reliably and securely. Working within our software engineering community, you will champion modern engineering practices, drive automation, and embed security throughout the software development lifecycle. Through your technical leadership and mentoring, you will ...

Principal Software Engineer Department: Technology Employment Type: Permanent - Full Time Location: London Reporting To: Head of Engineering Description Defaqto is one of the most trusted names in UK financial services research and ratings, and our technology turns deep market data into decisions that advisers, providers and consumers … rely on every day. The credibility of that output rests on the quality of our engineering. We are looking for a Principal Software Engineer to be the most senior individual contributor in our Technology function. Reporting to the Head of Engineering and working closely with ...

ROLE: Principal Software Engineer (DevSecOps) As a Principal Software Engineer (DevSecOps), you will play a key role in accelerating the delivery of secure, high-quality software across Leonardo’s defence and security programmes. You will help shape and evolve our enterprise DevSecOps capability … enabling teams to deliver features and updates rapidly, reliably and securely. Working within our software engineering community, you will champion modern engineering practices, drive automation, and embed security throughout the software development lifecycle. Through your technical leadership and mentoring, you will help build a collaborative DevSecOps culture focused ...

PRINCIPAL SOFTWARE ENGINEER FULLY REMOTE PERMANENT ROLE SALARY - CIRCA £100K + BENEFITS Your new role We're looking for a Principal Software Engineer to join a high-growth technology business building an AI-powered digital platform operating at significant scale.This is a senior hands … role combining software engineering, architecture and DevOps. You'll own complex product engineering initiatives while also influencing the wider cloud platform, infrastructure and engineering standards. What you'll need to succeed What you'll be doing * Designing and delivering scalable product features end-to-end. * Remaining hands-on across ...

emerging capabilities such as AI to ensure we're building experiences that delight customers while enabling the business to move at pace. As a Principal Software Engineer, you'll help shape the technical direction of our front-end and digital platforms, influence engineering standards across the organisation … that directly influences the experience of millions of customers and helps drive the future growth of Very. About the roleWe're looking for a Principal Software Engineer to provide technical leadership across our engineering community whilst remaining hands-on with design, architecture and delivery. This ...