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

Our client is a global credit ratings and risk analytics firm.Skills and Competencies12+ years of software engineering experience, including 5+ years leading engineering teams and delivering complex, large-scale...Read More>>.

Job DescriptionOur client is a global aerospace, defence and security company.\nJob Description:\nSalary Range: £54,000 - £70,000\nOur client operates a grade-based salary framework with b...Read More>>.

Job DescriptionOur client is a major defence and aerospace company.\nDate Posted:\n2026-08-13\nCountry:\nUnited Kingdom\nLocation:\nGloucester, South Gloucestershire\n...Read More>>.

Job DescriptionOur client is a leading global investment bank.JOB DESCRIPTION\n\nAs we continue to accelerate the transformation of our technology and services, we are placing security and compliance at the heart of...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 lead software development for advanced flight control and actuation systems, shaping architecture and ensuring safety-critical compliance. You will mentor teams and collaborate with hardware and test engineers...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 you will provide technical leadership across the technology function, shaping architectures and engineering standards for scalable, secure enterprise applications. You’ll mentor engineers, partner...Read More>>.

Overview As a senior engineering leader at Very, you shape how we build scalable, customer‑facing software and cloud platforms. You’ll influence multiple squads, champion engineering standards, and drive architectural decisions with pro...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 In this role you own and shape the technical strategy for a software vertical, aligning with cross‑functional teams to influence enterprise-wide architecture and practices. You lead high-impact technical work, mentor engineers, a...Read More>>.

Overview As Principal Engineer, you will shape the architecture and direction of our API platform, guiding scalable cloud-native systems and event-driven services. You will work with cross-functional squads to solve distributed systems chal...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 accelerate secure, high-quality software delivery across Leonardo’s defence and security programmes. You will help shape and evolve the enterprise DevSecOps capability to enable teams to deliver features rapidly...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 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>>.

Overview As Principal Engineer, you will lead the strategy and delivery of mission-critical AI platforms within Moody's Digital Content and Innovation team. You will shepherd multi-team efforts from prototype to production, shaping scalable...Read More>>.

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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 design and delivery of embedded software for safety-critical systems in aerospace. You will shape architectures, drive integration and verification, and mentor engineers to ensure...Read More>>.

Overview As Principal AI Engineer you lead the embedded Innovation Squad, driving AI architecture and delivery from discovery to production. You will harden prototypes, design reusable agentic AI patterns, and guide integration with enterpr...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 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>>.

Hybrid in London (2 days on-site, 3 days from home)Up to £130k base + Bonus +StockPrincipal Software Engineer – Would you like to be part of a brand-new engineering group focused on redefining how people move through next gener...Read More>>.

2 days ago Be among the first 25 applicantsThis range is provided by Holt Executive Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the...Read More>>.

Based in Oxford, you will join a highly experienced and growing Software Development team building innovative, cloud-based software that supports major decisions in the global energy transition. Our platform is built on AWS using a micro...Read More>>.

1 week ago τί Be among the first 25 applicants SR2 | Socially Responsible Recruitment | Certified B sortion™ provided pay range This range is provided by SR2 | Socially Responsible Recruitment | Certified B Corporation™. Y...Read More>>.

We are looking for a Principal Software Engineer to join a small, highly experienced Epicor Labs team that transforms innovative AI concepts into enterprise-grade products trusted by enterprise customers.This is a hands-on engi...Read More>>.

Moog is a performance culture that empowers people to achieve great things. Our people enjoy solving interesting technical challenges in a culture where everyone trusts each other to do the right thing. For you, working with us can mean deeper...Read More>>.

Meet the TeamCisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network - even the ones they don't own. Powered by AI and an unmatc...Read More>>.

Job Title: Principal Software EngineerLocation: Cambridge, United Kingdom – HybridEmployment Type: Full TimeThe JobAs part of the E3D development group, you’ll be responsible for maintaini...Read More>>.

Job Description: The 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 technica...Read More>>.

The Principal Engineer is the most senior individual contributor in engineering, setting technical direction, leading architectural decisions and aligning technology investment with business strategy. They combine deep technical expertise with...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>>.

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, Sydney...Read More>>.

Make The Connection.Vix Technology is a global leader in providing innovative solutions for public transit, believing that accessibility should be a standard. With over 35 years of experience and systems deployed in more than 200 citie...Read More>>.

Location: Luton (Hybrid: 4 days on-site, 1 day remote) Contract: 12 months IR35: Inside IR35 Security Clearance: Full UK SC required upon application Day Rate: Competitive (please enqu...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 EngineerArm is redefining what is possible in cloud and data center computing. Our Neoverse platforms are helping power the next generation of infrastructure – combining advanced silicon with the system soft...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>>.

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>>.