22 of 22 Principal Software Engineer Jobs in the South East

We’re Hiring: Principal Software Engineer – Satellite Systems Location: Surrey-based (Hybrid) Sector: Satellite Communications | Embedded Systems | Space-tech GTS Space is partnering with a leading company in the space-tech sector, which is on the lookout for a Principal Embedded Software Engineer Our … successful space missions across the solar system, with clients like NASA and ESA. With teams on three continents, they’re looking for a Principal Software Engineer to join them in their Surrey office. This is a rare chance to work on mission-critical software for cutting … edge satellite communications and onboard processing systems. 💡 Your Mission: As Principal Software Engineer, you'll: Lead the design and optimization of software for advanced satellite communication systems Define architecture and drive the development of embedded, real-time solutions Collaborate closely with systems engineers to integrate hardware More ❯

GTS Space is partnering with a leading company in the space-tech sector, which is on the lookout for a Principal Embedded Software Engineer Our client is a global trailblazer in space-resilient computing — their technologies are already powering over 50 successful space missions across the solar … system, with clients like NASA and ESA. With teams on three continents, they’re looking for a Principal Software Engineer to join them in their Surrey office. This is a rare chance to work on mission-critical software for cutting-edge satellite communications and onboard processing … systems. �� Your Mission: As Principal Software Engineer, you'll: Lead the design and optimization of software for advanced satellite communication systems Define architecture and drive the development of embedded, real-time solutions Collaborate closely with systems engineers to integrate hardware and software Guide and mentor More ❯

Principal Software Engineer/Lead Software Engineer/C++/Rust A well-funded technology start-up operating at the forefront of AI has secured significant multimillion-pound investment. The company is developing a truly unique software platform that transforms how organizations interact with … autonomous systems and the data they generate—bringing disparate technologies together and making them more user-friendly. You will join as a Principal Software Engineer - C++/Rust , the critical hire for this specific team. This position offers full ownership and autonomy from day one, and you … double in size over the coming months, it's an exciting time to join the business during a period of rapid growth. As the Principal Software Engineer, you’ll have the opportunity to build a team around you and make key strategic decisions shaping the company’s More ❯

Principal Software Engineer Note: The business are hiring for Senior-Principal Engineers Principal Engineer TypeScript, React, NextJS, NestJS, Python At Wave Talent, we don't want to consume any more of your time trying to decipher job descriptions to identify the information you need. … We’ve partnered with a high-growth AI technology company who are pushing the boundaries in industrial tech, and we’re hiring Senior to Principal Engineers to join their mission-critical platform team. This role is on-site 5 days a week and whilst this may change in the … driving technical excellence across the team. We'd love to chat with you about this position if: ✅ You’ve got extensive experience as a Principal Engineer, Staff Engineer, or in a senior full-stack engineering role, ideally within fast-paced, high-growth tech environments. ✅ You’re highly More ❯

Principal Software Engineer (TypeScript) Salary: £120,000 - £140,000 plus equity Location: 3 days p/week in London Principal Engineer - would you like the opportunity to work for a start-up who recently raised series A funding? You will be joining a technology team … a passion for innovation, collaboration, and providing the best service to their customers as well as embracing new ideas, technologies and approaches. As a Principal Engineer, you will be joining the organisation at one of the most exciting times. You will be working alongside a team of experienced … fast-paced start-up. Focus on building highly reliable and well architected products. Computer Science degree would be a bonus. If you're a Principal Engineer, looking to work for one of the fastest growing start-ups, please apply. More ❯

Principal Software Engineer | London (Hybrid - 3x in office) up to £140K Salary + Bonus + Benefits We are seeking a talented and passionate Principal software engineer to join a leading financial services company. Our client is a pioneering player in the pension's space … of assets under management and a reputation for excellence, this is an exciting opportunity to contribute to the transformation of the industry. As a Principal, you will play a pivotal role in enhancing and developing critical systems used across various business functions, including trading, operations, actuarial, and finance. You … cross-functional teams, including Trading, Operations, and Finance, to deliver impactful new features. Contribute to a fast-paced environment while maintaining best practices in software development. Skills and Experience Required: Excellent academic record, PhD or MSc in Science/Stem subjects. 4+ years of application development experience, within fast More ❯

Principal Software Engineer - Java, Leadership - London (Hybrid) One of my consulting clients in London is looking for a Principal Software Engineer to lead a development team working on an exciting project. Key Skills: Java Development Springboot Microservices REST APIs Cloud (AWS Ideally or Azure More ❯

Principal C++ Software Engineer - World Class Start-up/Deep Tech Principal C++ Software Engineer required for a rapidly growing start-up who have just received a significant amount of funding. You will be looking to use your C++ Engineering or Rust skills within … Python Engineers and are looking at bringing on a few key hires to help scale the company and really develop their product. As the Principal Software Engineer you will play a critical role, working closely with the founders and founding team. You will ideally be interested in … AI and Robotics and will be keen to lead from the front in the development of their software but most importantly be keen to solve complex challenges. They're building a unique platform which will be working with a number of elite robotics manufactures and running a large amount More ❯

components for a wide range of industries, leveraging advanced 3D printing techniques. As they continue to grow, they are looking to bring on a Principal Software Engineer to lead the development of their state-of-the-art metal printing systems. As a Principal Software Engineer, you will play a pivotal role in the development of embedded software for the company's next-generation 3D metal printing machines. These machines are designed to deliver high-volume, precision printing for large-scale industrial parts, with an emphasis on sustainability and green manufacturing. You will be … responsible for architecting and implementing software solutions that integrate motion control systems, real-time operating systems (RTOS), and other critical embedded components to ensure the efficient and reliable performance of the printing systems. In this senior role, you will lead and mentor a team of junior engineers, providing guidance More ❯

Principal Software Engineer We're looking for a talented Software Engineer to lead the design and development of user-facing software for the remote control and monitoring of autonomous vehicles. You'll work closely with operations experts and key customers to run UI experiments … gather feedback, and refine critical software features. This is a hands-on, high-impact role that spans R&D, prototyping, and production deployment. Key Responsibilities: Lead the end-to-end development of GCS interfaces, enabling real-time monitoring and control of autonomous systems. Design, build, and maintain UI software … to gather insights, validate usability, and continuously refine the user experience. Create prototypes and storyboards to explore and iterate on interface concepts. Ensure that software quality is maintained throughout by conducting thorough testing and validation. Collaborate on a regular basis across multidisciplinary teams to ensure the successful delivery of More ❯

Principal Software Engineer We're looking for a talented Software Engineer to lead the design and development of user-facing software for the remote control and monitoring of autonomous vehicles. You'll work closely with operations experts and key customers to run UI experiments … gather feedback, and refine critical software features. This is a hands-on, high-impact role that spans R&D, prototyping, and production deployment. Key Responsibilities: Lead the end-to-end development of GCS interfaces, enabling real-time monitoring and control of autonomous systems. Design, build, and maintain UI software … to gather insights, validate usability, and continuously refine the user experience. Create prototypes and storyboards to explore and iterate on interface concepts. Ensure that software quality is maintained throughout by conducting thorough testing and validation. Collaborate on a regular basis across multidisciplinary teams to ensure the successful delivery of More ❯

Company | SaaS, Product, B2B2C, Enterprise 📏 Size | 2.5k globally, 300 in London 🧢 Role | Principal Software Engineer 🎯 Areas | backend infrastructure, distributed systems, data processing ✨ Tech | Go, TypeScript, Node.js, AWS, event-driven architecture 📍 Based | London (Zone 1) 💻 Hybrid | 3 days a week in-office 💰 Offer | up to £150k base + … globally . Their infrastructure group ensure fast queries , high availability , and low - latency data processing across the platform. 💥 This group is looking for a Principal Engineer in London to help: scale their core data capabilities by 100x to open bigger enterprise opportunities ensure fast queries, high availability , and … non-technical stakeholders a natural desire to collaborate cross-functionally and craft org - wide relationships ✅ This role will suit a hands-on Staff/Principal Engineer/Head of Engineering ✅ ❌ This role will not suit a Senior looking to make a step up ❌ They really value people who More ❯

Senior/Principal Software Engineer - Kotlin £90,000-£150,000 basic salary Project at Tier One Investment Bank London - Hybrid working - flexible Are you a Senior/Principal Engineer with commercial Kotlin experience who is ready to make an impact in one of the world … s leading financial institutions in the new year? We’re searching for a Senior/Principal Kotlin focused Engineer to join a critical project at a Tier 1 Investment Bank, working on mission-critical systems that power global investment strategies. This is a greenfield project where you'll … have a lot of autonomy and influence. Working for a developer-led software consultancy passionate about software craftsmanship and developer experience enables you to focus on the tech and not get bogged down in the politics. What you’ll do: Develop and maintain highly reliable backend systems using More ❯

Principal Embedded Software Engineer Milton Keynes Full time, permanent position Onsite 5 days per week Our client designs and develops innovative communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. They foster a dynamic, collaborative work environment that encourages learning and autonomy. If … you're passionate, energetic, and forward-thinking, this role could be perfect for you. In this role, you will develop software for the client's products, ranging from Linux-based single-board computers to high-reliability microcontroller systems. Responsibilities span the entire development cycle, including designing, coding, testing, and … supporting low- and high-level software. You'll aim to create hardware and software solutions that simplify integration for the client's customers. As part of the software team, you will oversee designs from concept to production, encompassing product roadmaps, detailed coding, testing, qualification, and in-orbit support. More ❯

Join the Growth Story at Envitia Join Envitia, a leader in the UK's digital and software services landscape, where your work in cutting-edge technology empowers our customers to manage, share, and exploit data more effectively: Influence significant digital and data transformation projects within the UK public sector. … to make a real impact, grow with a supportive team, and help shape the future of data solutions in trusted sectors. The Role The Principal Java Engineer has a critical role within the Engineering function, tasked with setting technical standards and influencing the architectural decisions that shape the … company's software solutions. This position is suited for a seasoned expert who not only technically leads projects within their domain of expertise but also supports business development efforts through pre-sales engagements. The Principal Engineer will guide the technology strategy, collaborate with cross-functional teams and More ❯

Principal Embedded Software Engineer Milton Keynes Full time, permanent position Onsite 5 days per week Our client designs and develops innovative communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms click apply for full job details More ❯

Equity options: 0.25% - 0.5% Hybrid working policy: Minimum three days a week in our Holborn office Experience level: At least seven years in commercial software engineering If you're looking to join an exceptional, fast-paced, and growing team building innovative products in FinTech, check out the full job … product that may not be suitable for every investor. The role As we approach the launch of our product, we are looking for a Principal Software Engineer to strengthen our engineering team. You will have extensive commercial experience designing, building and maintaining systems used in critical services … Ensure best practice through example and continual team feedback Root causing real-time production issues in a timely manner Taking a pragmatic approach to software development Your background Extensive experience in software engineering, with a focus on designing, building, and maintaining large-scale systems Proven track record of More ❯

We are seeking a highly skilled and experienced Principal Software Engineer to join our team full time. This is a hands-on role where you will be deeply involved in the development of drone related backend systems, contributing across the entire stack. You will also have the … for building a data lake/warehouse and the foundation of business intelligence. Support the creation of a Network Operating Center (NOC) on the software & system side and other strategic initiatives such as design and development of digital twin infrastructure. Own the definition of done, performance, security, and usability. … and guide external consultants and freelancers to deliver high-quality results. Requirements Required Qualifications and Skills At minimum 10 years of work experience in software development roles Strong programming skills in Go, React and JavaScript Great understanding of PostgreSQL, MongoDB and data streaming pipelines Proven experience designing and implementing More ❯

handle the complexity of modern cruising — all while keeping things collaborative and fun. What you will be doing and why it matters As a Principal Engineer at IgluCruise.com, you’ll take technical ownership of the CRM and operations domains , helping to shape the evolution of our enterprise platforms … drive engineering strategy and team growth The Head of QA to ensure high standards of quality, automation, and release confidence The Lead Engineers and Software Engineers in the CRM and operations Product Teams Business stakeholders as a technical consultant for new idea submissions Collaboration will be at the heart … What we are looking for Contribute to sprint planning while providing architectural guidance to product teams. Shape the long-term technical vision for bespoke software, looking beyond immediate delivery needs. Serve as a technical advisor to business units aligned with product teams, with a primary focus on Sales and More ❯

Senior & Principal Software Engineers - Aerospace & Defence East London/Kent (3 days on client side - travel and accommodation expenses covered) Senior: up to £65,000 | Principal: up to £75,000 Safety-Critical Embedded Software | Defence & Aerospace Projects An industry-leading consultancy in the aerospace and defence … East London/Kent region - and this is a fantastic opportunity to get in at the ground level. We're looking for Senior and Principal Software Engineers with proven experience in safety-critical embedded systems . You'll join a growing team working on a wide variety of … high-impact projects across mission-critical domains. Key Requirements: Strong background in safety-critical embedded software engineering Experience in the defence or aerospace sectors Willingness to work 3 days per week on client site UK eligibility for security clearance is a plus What's on Offer: Competitive salaries: up More ❯

passionate, collaborative, energetic, and forward-thinking individuals to join our team. In this position, you will be responsible for low-level and high-level software in Cesium's products through all phases of the development process. Key projects will include Linux-based single-board computers and high-reliability microcontroller … systems. Cesium's goal is to create an out-of-the-box hardware and software experience which enhances our customers' ability to rapidly integrate our products into their systems. As a Cesium software team member, you will be responsible for software designs from concept through production, including … detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack, including microcontrollers, low-level drivers, board support packages (BSP), end-use applications, and user interfaces. Additionally, the ideal candidate will have experience in More ❯

will have a deep understanding of market microstructure, a strong background in multi-threaded programming, and experience with performance optimisation at the hardware and software level. Duties: Design, develop, and optimize low-latency, high-throughput trading algorithms for equities. Implement and fine-tune high-performance C++ code for electronic More ❯