Title: Principal Software EngineerRole: Distributed Systems & CommunicationsLocation: CambridgeshireSalary: £60-£80kPlatform Recruitment has par...Read More>>.

PRINCIPAL SOFTWARE ENGINEER – V06450Role Description Provide technical expertise across the software team for the requirements, design, implementation, testing and verification of the software subsystems on Na...Read More>>.

Principal Software Engineer (Contract) - Naval RadarBAE Systems (Defence Solutions) | Cowes, Isle of Wight | 6 months | Inside IR35BAE Systems (Defence Solutions) i...Read More>>.

Overview In this leadership role, you blend hands-on coding with strategic software leadership to guide a product squad and set high‑level architecture. You will drive best practices, manage technical debt, and align delivery with other P...Read More>>.

Overview In this role you will lead architecture and development of high-performance, secure communication systems. You will mentor engineers and drive best practices across the software lifecycle, collaborating with the Software Team to en...Read More>>.

Overview As a Principal Software Engineer in Public Markets Technology, you will help build an AI-enabled investment platform by delivering scalable Python solutions on a cloud-first stack. You’ll collaborate with portfolio managers, data...Read More>>.

Overview In this role you will help evolve ThousandEyes’ technologies within Cisco’s broader portfolio, shipping new features that improve digital experience across networks. You will collaborate with product and engineering leaders to...Read More>>.

Overview As a Principal Software Engineer in Mastercard’s Operations Automation Program, you lead automation and infrastructure management across on-premise and cloud environments. You’ll shape scalable DevOps across global engineering...Read More>>.

Overview In this role, you will shape the next generation of software features for defence systems. You join a world-class team focused on delivering market-leading solutions in Integrated Sensors & Protection, driving innovation across com...Read More>>.

Overview In this role you will own the end-to-end software lifecycle for secure, mission-critical products in a defence environment. You’ll lead embedded and/or application software development, shaping architecture with cross-functional...Read More>>.

Overview As a Principal Software Engineer, you will lead the development of safety-critical airborne software in a multidisciplinary team. You will influence engineering decisions and shape robust embedded solutions for Zephyr-based stratos...Read More>>.

Overview As Principal Software Engineer, you will provide technical leadership for a new Electron- and Chromium-based desktop platform enabling Autodesk web apps. You will define platform architecture, lead core engineering across Electron,...Read More>>.

Overview In this role you lead technical direction for Vitality’s Engineering function, shaping standards and architecture across enterprise platforms and customer-facing solutions. You work across multiple teams with senior stakeholders...Read More>>.

Overview As Principal Software Engineer, you will architect and build cloud-native solutions across Mobile, Web, and Tooling to advance medical insights and predictive models. You may lead a small team from day one or focus on hands-on deli...Read More>>.

Job DescriptionThe Opportunity Are you a Software Engineer with C++ experience looking for your next challenge? Here at Leonardo, we are seeking an experienced Principal Software Engineer to take on pivotal technical work within our In...Read More>>.

At Fred. Olsen Ltd., we empower people to make a difference. Whether shaping renewable energy’s future or delivering industry-leading logistics, our team thrives on innovation and collaboration.Established in 1963, Fred. Olsen Ltd focus...Read More>>.

Inside IR35Hybrid - LondonRole Overview:We are seeking an exceptional Senior / Principal Java Developer with extensive front-to-back trading systems expertise to join our delivery team on a high-profile eng...Read More>>.

Join to apply for the Principal Software Engineer role at Lloyds Banking Group. Base pay range This range is provided by Lloyds Banking Group. Your actual pay will be based on your skills and experience — talk with...Read More>>.

Job Description Principal Software Engineer Full Time Location - Heybridge At Rolls-Royce we are proud to be a business that has truly helped to shape the modern world and are committed to always being a force f...Read More>>.

Reading - Hybrid (ideally 2/3 days per week)Albany Growth are partnered with an established software business going through a major multi-year technology transformation, rebuilding and modernising a large legacy product estate onto a new...Read More>>.

We are The Citation Group - a collective of businesses dedicated to supporting small and medium-sized enterprises across a range of essential services. We know that running a business means juggling a lot. Our mission is to ease these pressures by...Read More>>.

Principal Software Engineer / Principal AI EngineerAre you excited about building intelligent systems powered by innovative AI technologies?Do you enjoy creating solutions that turn complex data into impactful outcomes?A...Read More>>.

Principal Software Engineer - Simple MachinesHybrid · Full-time · London, UKAbout Simple MachinesSimple Machines is a leading independent boutique technology firm with a global footprint across London, Poland, Sydn...Read More>>.

Salary: £100,000 - 100,000 per year Requirements Formal training or certification (e.g., BSc, CKAD, Google Associate Cloud Engineer, or AWS Certified Solutions Architect). Expert-level administration of a maj...Read More>>.

Salary: £95,000 - 95,000 per yearRequirements:We require candidates to be willing and eligible to hold SC and eDV clearance.We are looking for experience in core software engineering.Experienc...Read More>>.

The Role We’re looking for experienced Principal Software Engineers who enjoy solving complex technical challenges, building scalable systems, and helping engineering teams deliver high-quality software in production environme...Read More>>.

Our client, a leading UK insurance and technology organisation, is seeking a Principal Software Engineer to provide technical leadership across complex enterprise platforms and customer-facing solutions. This permanent role offers a hybrid working...Read More>>.

Principal Software Engineer Date: 2026-09-26T00:00:00 Location: Kingswood, Surrey, GB, KT20 6 Work Type: Any Closing Date: 2026-12-28T19:01:34.117 Job Description Raytheon U...Read More>>.

Salary: £100,000 - 100,000 per yearRequirementsWe require at least 5 years of experience delivering production-grade cloud solutions.We are looking for strong proficiency in Java and experience with JVM-based...Read More>>.

At MHR, our employees are central to our success and play a key role in helping customers achieve sustainable high performance. With a team of over 900 professionals, we work to make things flow smoothly, whether it's for large organisations or in...Read More>>.

Job Description: Job DescriptionAre you a Real Time Embedded Software Engineer ready to take the next step on your career journey. If you are looking at opportunities for progression, to learn and grow within a supportive enviro...Read More>>.

Salary: £61,000 - 101,000 per year Requirements: 12 years of software engineering experience, including 5 years leading engineering teams and delivering complex, large-scale, multi-team initiatives with measurable bus...Read More>>.

Salary: £61,000 - 101,000 per yearRequirements:Formal training or certification on software engineering concepts, with advanced applied experienceHands-on practical experience delivering system design, applica...Read More>>.

ZoomInfo is where careers accelerate. We move fast, think boldly, and empower you to do the best work of your life. You’ll be surrounded by teammates who care deeply, challenge each other, and celebrate wins. With tools that amplify your impact...Read More>>.

Selection changes the language of the page/contentPrincipal Software Engineer - Software ArchitectureLondon, England, United Kingdom Software and ServicesImagine what you could do here. At Apple, new ideas have a way of beco...Read More>>.

Our MissionAt Palo Alto Networks®, we’re united by a shared mission—to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real‑world problems with cutting‑edge technology and bold thi...Read More>>.

Palo Alto Networks is seeking a Senior Principal Software Engineer to shape the architecture of our cloud platform and drive end-to-end security for global services. You will lead hands-on engineering across Go, Node.js, and Python, collaborating...Read More>>.

Palo Alto Networks is seeking a highly experienced Principal Software Engineer to join our team in a role focused on building secure, scalable backend systems. You will own features end-to-end across Python, Go, and C++, within an AWS-native SaaS...Read More>>.

Our MissionAt Palo Alto Networks®, we’re united by a shared mission—to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real-world problems with cutting-edge technology and bold thinkin...Read More>>.

ZoomInfo is accelerating careers with a fast-paced, bold culture. We are seeking a Principal Software Engineer to own features across the full stack—from React frontends to backend APIs and cloud infrastructure—while shipping fixes for product...Read More>>.

Principal Software Engineer – Agentic EngineeringUsing AI and agentic engineering to modernise complex legacy software, and fundamentally change how engineering teams build software.This isn't a traditional software eng...Read More>>.

Business Area: Asset Management Platform Location: London Reporting to: Client Technology Delivery Lead Job title: Principal Salesforce Engineer Who we’re looking for We are seeking a hands‑on Salesforce...Read More>>.

Dex is seeking a principal-level engineer to co-own the roadmap with product, drive architecture, and operate what you build in production. You will own end-to-end development of mission-critical REST APIs powering global tax compliance for enter...Read More>>.

Job Overview (Please note, location is Manchester, however we are open to having this position be based out of any of our other offices across the UK) Are you interested in bringing new graphics and gaming technology into commercia...Read More>>.

Job DetailsRole: Principal Software Engineer Locations: Manchester (must be willing to travel to client sites throughout the UK on an ad hoc basis) Level: Manager Salary: Competitive salary and package (Depending on level of experience) A...Read More>>.

Out of the successful launch of Chase in 2021, we’re a new team, with a new mission. We’re creating products that solve real world problems and put customers at the center - all in an environment that nurtures skills and helps you realize your...Read More>>.

Roche in the United Kingdom is seeking a Principal/Senior Principal Software Engineer within the Computational Sciences Center of Excellence. You will design and build scalable, data-centric platforms that accelerate drug discovery, collaborating...Read More>>.

Principal Software Engineer - LondonReference Code: 548921-en_GBContract Type:PermanentProfessional Communities: Delivery ExcellenceAbout the job youre consideringThe...Read More>>.

Company DescriptionWork with Us. Change the World.At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, o...Read More>>.

Your new company Join one of the world's leading engineering and design consultancies, delivering innovative transportation and infrastructure projects across Ireland and internationally. Due to continued growth within thei...Read More>>.