1 to 25 of 37 Principal Software Engineer Jobs in the UK

Principal Software Engineer/Developer (Rust Golang) London/WFH to £110k Are you a senior technologist with leadership skills? You could be progressing your career working on bleeding edge, Machine Learning and AI powered, audio fraud detection software used by all UK banks, the emergency … services and a range of other clients to prevent and detect fraudulent call activities at a market leading SaaS business. As a Principal Software Engineer you will split your time between architecture, design, hands-on coding and mentoring, team leadership and strategy. You'll collaborate with Product ...

Principal Software Engineer (C#, Azure, Event Driven) £90,000 + Bonus + Shares | St Albans (Hybrid) Method is partnering with a technology company that's about to launch a major digital transformation and rebuilding their architecture from the ground up. The company has been in business … also looking to scale massively over the next 5-years as they enter new markets, and as a result, are looking for a Principal Engineer to help deign, build and guide to achieve this. As the Principal Software Engineer, you be a hands-on technical ...

Principal Software Engineer - C#/Azure/React C#, Azure Functions, SQL Server, React, Leadership, Agile Salary up to £80k Manchester city centre For more information, please email me directly at or call on . Who We Are: We're a collaborative and fast-paced tech team … delivering scalable, user-focused software solutions. With growth on the horizon, we're now looking for a Principal Software Engineer to take ownership of a high-performing development team and help shape the future of our products and practices. Who We're Seeking: We're looking ...

Principal Software Engineer - .NET/C#/AWS/CI/CD .NET, C#, AWS, JavaScript, DevOps, Agile, CI/CD Salary up to £75-85k + Bonus scheme Hybrid - 3 days a week on-site (Greater Manchester) For more information, please email me directly … empowered to design, build, and deliver scalable, high-performance systems that shape the future of our business. We're now looking for a Principal Software Engineer to take a leading role in guiding our engineering direction, mentoring talented developers, and driving the adoption of modern technologies ...

Principal Software Engineer Great Baddow(Chelmsford)-Hybrid working role Up to £80k + 10-20% Bonus My client a multinational Aerospace & Defence organisation are looking for a Principal Software Engineer to join their Great Baddow site working on a hybrid basis. What … doing: Derive and maintain a set of software requirements from a baseline set of systems requirements Produce and maintain a software design to meet a set of software requirements Use a software design to produce a deliverable software solution Undertake peer reviews or checking/ ...

title: Principal Software Engineer Location: Oxford - Hybrid Salary: up to £75,000 Job Type: Permanent Organisation Overview Our Client operates within the high-tech instrumentation sector, specialising in advanced measurement solutions for scientific and industrial applications. Recognised for its innovative approach and commitment to excellence, Our Client … culture that encourages professional development and teamwork. Role Summary Due to ongoing growth and strategic development initiatives, Our Client is seeking an experienced Principal Software Engineer to lead the development of sophisticated software applications and drivers for its range of specialised products. This pivotal role ...

Principal Software Engineer Location: London - 1x a month Salary: £95,000 - £120,000 + equity + benefits An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital … with engineering leadership to define best practices, coding standards, and long-term technical strategy. Design, develop, and oversee the delivery of robust, production-grade software built using Python, Django, Cloud Firestore, BigQuery, and Elasticsearch. Mentor and guide engineers at all levels, fostering a culture of technical excellence and continuous ...

Principal Software Engineer Location: Remote first (Occasional travel to London) Salary: £95,000 - £120,000 + equity + benefits An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next … with engineering leadership to define best practices, coding standards, and long-term technical strategy. Design, develop, and oversee the delivery of robust, production-grade software built using Python, Django, Cloud Firestore, BigQuery, and Elasticsearch. Mentor and guide engineers at all levels, fostering a culture of technical excellence and continuous ...

Principal Software Engineer Edinburgh An innovative and well-established med tech company are seeking a proven technical leader to join its R&D team basedin central Edinburgh as a Principal Software Engineer. This is a unique opportunity to play a key role in the development … remain hands on and ship code whilst making key architectural decisions, driving the roadmap, and contributing to building a high performing dev culture ...the Principal role is ideal. You will be part of a cutting-edge company at the forefront of healthcare technology. Contribute to a high-performance culture ...

Principal Software Engineer Location: London - 1x a month Salary: £95,000 - £120,000 + equity + benefits An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital ...

Title: Principal Software Engineer Location: Cambridge Work Setup: Onsite Were partnering with a rapidly growing Cambridgeshire-based company specializing in the development and supply of radio terminals, accessories, and applications for mission-critical and business-critical communications. Due to continued expansion, theyre looking for a Principal Software Engineer to join their growing team. The successful candidate will play a key role in the development, integration, and maintenance of the companys web and communication platforms Key Responsibilities - Lead the design and development of high-performance, secure communication systems in C#.NET - Build low-latency, high ...

Principal Software Engineer - Frontend London (Remote First - Occasional travel) Salary: £95,000 - £120,000 + equity + benefits An established, global technology business within the hospitality-tech industry is seeking a talented Principal Frontend Software Engineer to help build and scale cutting-edge digital … ensure reliable, scalable solutions. What do I need to be successful: Degree in Computer Science or equivalent hands-on experience. 7+ years in frontend software development, including experience in a lead or principal engineering capacity. Deep expertise in React, TypeScript, and modern frontend architecture (state management, component design ...

Principal Software Engineer Edinburgh An innovative and well-established med tech company are seeking a proven technical leader to join its R&D team basedin central Edinburgh as a Principal Software Engineer. This is a unique opportunity to play a key role in the development ...

Principal Software Engineer - Frontend London (Remote First - Occasional travel) Salary: £95,000 - £120,000 + equity + benefits An established, global technology business within the hospitality-tech industry is seeking a talented Principal Frontend Software Engineer to help build and scale cutting-edge digital ...

Title: Lead/Principal Embedded Software Engineer Location: Gloucester (On-Site Working) Salary: Up to £85,000 (Depending on Experience) Summary of Vacancy: We’re currently recruiting for a Principal Embedded Software Engineer on behalf of a cutting-edge Security Research & Development organisation. This … novel and secure solutions that push technical boundaries. You’ll be working in a deeply technical, collaborative environment that prioritises engineering excellence. As a Principal Engineer, you’ll lead development efforts for secure embedded systems, working hands-on with code while also guiding and mentoring others. ...

Principal Software Engineer Edinburgh 12-Month Contract Paying up to £87p/h (Inside IR35) Please note - due to the nature of the work, you will need to hold or be eligible to obtain a high level of UK Security clearance - please only apply if suitable … Responsibilities: Create and deliver software solutions within a defined work package area, ensuring that the package meets all stakeholder requirements Establish and mature stakeholder needs, associating/attributing priority, interest, influence and trading-off needs to determine optimum capability to solve stakeholders? problems Create high-quality and robust code ...

Lead Software Engineer IoT & Full-Stack Location: Hybrid/Bicester Type: Permanent Salary: Competitive, market-based TUAL Technology is an innovative, VC-backed start-up based in Bicester, developing PowerUp a high-power EV charging solution designed for grid-constrained sites. By integrating battery storage, smart energy management … short. Working with enterprise customers across Europe, TUAL is transforming the productivity and profitability of electric commercial vehicle fleets through a portfolio of intelligent, software-defined, cloud and IoT-enabled charging solutions. The RoleWere looking for a hands-on Lead Software Engineer to own the design ...

Lead Software Engineer IoT & Full-Stack Location: Hybrid/Bicester Type: Permanent Salary: Competitive, market-based TUAL Technology is an innovative, VC-backed start-up based in Bicester, developing PowerUp a high-power EV charging solution designed for grid-constrained sites. By integrating battery storage, smart energy management … short. Working with enterprise customers across Europe, TUAL is transforming the productivity and profitability of electric commercial vehicle fleets through a portfolio of intelligent, software-defined, cloud and IoT-enabled charging solutions. The Role Were looking for a hands-on Lead Software Engineer to own the design ...

About The Role Deadline for applications: 11:59pm on 31st October 2025 Were looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. We use technology to create impactful, human-centred solutions that make … working closely with senior stakeholders, mentoring engineers across multiple teams, and line managing a small group of engineers while helping shape our approach to software delivery, architecture, and engineering culture. Responsibilities Lead the design and development of advanced software solutions, ensuring high standards of quality, security and scalability. ...

Requirements Role Overview: Quest Global are hiring for experienced C++ Senior/Principal Software Engineers on a permanent basis to be based in Luton. This position is for embedded software development in an end to end role focused on electronic warfare systems. As a software engineer … programming expertise in C++14 , with extensive experience using Visual Studio for development, debugging , and performance optimisation. Proven ability to design, implement, and maintain embedded software on RTOS platforms such as VxWorks , including target integration and validation. Strong grasp of Object-Oriented Design (OOD) principles. Strong unit test skills using ...

Principal Software Engineer/Developer (Rust Golang) London/WFH to £110k Are you a senior technologist with leadership skills? You could be progressing your career working on bleeding edge, Machine Learning and AI powered, audio fraud detection software used by all UK banks, the emergency ...

Principal Software Engineer/Developer (Rust Golang) London/WFH to £110k Are you a senior technologist with leadership skills? You could be progressing your career working on bleeding edge, Machine Learning and AI powered, audio fraud detection software used by all UK banks, the emergency ...

About the Role We're looking for a Principal Software Engineer to lead the migration and modernisation of a complex legacy application into a modern, scalable architecture. This is a hands-on technical role where you'll shape the design, guide the team, and ensure successful delivery ...

Sapien Engineering are looking for a Principal Software Engineer to join an Aerospace/Defence client on a permanent basis. The role requires on site working, 4 days a week in Warton, Lancashire. The role is paying up to £80,000 plus benefits. Job requirements: C++ Visual ...

About The Role Deadline for applications: 11:59pm on 31st October 2025 Were looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. We use technology to create impactful, human-centred solutions that make ...