26 to 50 of 80 Principal Software Engineer Jobs in the UK excluding London

Principal Software Engineer My client is undergoing an exciting digital transformation, re-platforming its technology stack. They are seeking a Principal Software Engineer to play a key role in shaping the future of their digital platforms. You will lead the design, execution, and integration of cutting-edge solutions across eCommerce, Order Management, and Business … solutions in line with the company's digital strategy Ensure security, governance, and quality standards across development processes Oversee engineering execution, measuring productivity through KPIs Maintain high standards in software architecture, testing, and performance optimisation Collaborate with stakeholders, including Architects, Product Owners, and DevOps teams Support, mentor, and coach engineering teams Provide hands-on coding support when required, ensuring … best practices and modern development techniques What We're Looking For: Proven experience in software architecture, design, and development execution Technical leadership in engineering teams, driving innovation and best practices Expertise in at least one domain: eCommerce, Order Management, BI, Mobile Apps, or Fulfilment Strong technical skills in: AWS/cloud computing (API development, Serverless, NoSQL, containers) JavaScript, React.js More ❯

Principal Software Engineer My client is undergoing an exciting digital transformation, re-platforming its technology stack. They are seeking a Principal Software Engineer to play a key role in shaping the future of their digital platforms. You will lead the design, execution, and integration of cutting-edge solutions across eCommerce, Order Management, and Business … technology solutions in line with the companys digital strategy Ensure security, governance, and quality standards across development processes Oversee engineering execution, measuring productivity through KPIs Maintain high standards in software architecture, testing, and performance optimisation Collaborate with stakeholders, including Architects, Product Owners, and DevOps teams Support, mentor, and coach engineering teams Provide hands-on coding support when required, ensuring … best practices and modern development techniques What Were Looking For: Proven experience in software architecture, design, and development execution Technical leadership in engineering teams, driving innovation and best practices Expertise in at least one domain: eCommerce, Order Management, BI, Mobile Apps, or Fulfilment Strong technical skills in: AWS/cloud computing (API development, Serverless, NoSQL, containers) JavaScript, React.js, Node.js More ❯

Principal Software Engineer II (Fully Remote) Location: 100% Remote (UK & Ireland-based candidates preferred) Recruitment Partner: VANRATH Job Type: Full-time Permanent Industry: Fintech/SaaS/Payments VANRATH is proud to be partnering with an innovative and rapidly scaling fintech company to recruit a Principal Software Engineer II . This is a rare … building a modern, merchant-focused ecosystem while remaining hands-on in engineering. You'll help shape the future of the company's technical direction while contributing directly to the software that powers a nationwide payment infrastructure. This role is fully remote , offering you flexibility while working alongside a passionate, pragmatic, and forward-thinking engineering team. The Opportunity: As a … Principal Software Engineer II , you'll lead the design, development, and strategic direction of key platform capabilities-such as APIs, Billing, Settlement, and more. This is a hands-on technical leadership role with significant influence across architecture, engineering culture, and delivery practices. You'll guide feature teams, set standards, and participate in delivering real-world solutions that More ❯

Principal Software Development Engineer (C++) St. Neots, Cambridge, UK Software Engineering Full Time - Permanent Key information Full time - 40 hours a week St Neots, Cambridgeshire - hybrid working optional (2-3 days a week in the office) Your role As a Principal Software Development Engineer, you will work within a multi-disciplinary team, embracing … agile methodologies while mentoring Engineers. You'll create high-quality software solutions that meet the needs of our internal and external customers, always delivered on time and to an exceptional standard. This role allows you to dive into resolving technical challenges, addressing technical debt, and continually improving your skills with dedicated "blue sky" time for professional development. You'll … have the opportunity to lead key projects, contribute to feature design, and help shape the architectural direction of our products. Main Areas of Responsibility: The Principal Software Development Engineer will work to design and refine required features, proposing alternative solutions to improve both customer and developer experience. They will acquire and maintain a solid understanding of the More ❯

Principal Software Development Engineer (C++) St. Neots, Cambridge, UK Software Engineering Full Time - Permanent Key information Full time - 40 hours a week St Neots, Cambridgeshire - hybrid working optional (2-3 days a week in the office) Your role As a Principal Software Development Engineer, you will work within a multi-disciplinary team, embracing … agile methodologies while mentoring Engineers. You'll create high-quality software solutions that meet the needs of our internal and external customers, always delivered on time and to an exceptional standard. This role allows you to dive into resolving technical challenges, addressing technical debt, and continually improving your skills with dedicated "blue sky" time for professional development. You'll … have the opportunity to lead key projects, contribute to feature design, and help shape the architectural direction of our products. Main Areas of Responsibility: The Principal Software Development Engineer will work to design and refine required features, proposing alternative solutions to improve both customer and developer experience. They will acquire and maintain a solid understanding of the More ❯

Principal Robotics Software Engineer | AUV’s | ROV’s | Harwell – Hybrid | £70,000pa plus share scheme & benefits: A once in a lifetime opportunity has arisen for a passionate robotics Software Engineer to join a game changing company who has a pipeline of robotic AUV, ROV & UAV products which are going to be brought into existence and … robotics and the autonomous vehicle and unmanned vehicle industry, you honestly need to make contact with us, this one is not to be missed. MARS is recruiting an experienced Principal Software Engineer to lead the design, development, and integration of advanced software for next-generation underwater unmanned platforms. This role will play a pivotal part in … driving autonomy, perception, and mission-critical software for submersible robotic systems. Candidates must be British Citizens or lived in the UK for 10 years, due to needing SC clearance. Key Responsibilities: Lead the architecture, design, and development of software for autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs), leveraging ROS/ROS 2 and other robotic middleware. More ❯

Principal Robotics Software Engineer | AUV’s | ROV’s | Harwell – Hybrid | £70,000pa plus share scheme & benefits: A once in a lifetime opportunity has arisen for a passionate robotics Software Engineer to join a game changing company who has a pipeline of robotic AUV, ROV & UAV products which are going to be brought into existence and … robotics and the autonomous vehicle and unmanned vehicle industry, you honestly need to make contact with us, this one is not to be missed. MARS is recruiting an experienced Principal Software Engineer to lead the design, development, and integration of advanced software for next-generation underwater unmanned platforms. This role will play a pivotal part in … driving autonomy, perception, and mission-critical software for submersible robotic systems. Candidates must be British Citizens or lived in the UK for 10 years, due to needing SC clearance. Key Responsibilities: Lead the architecture, design, and development of software for autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs), leveraging ROS/ROS 2 and other robotic middleware. More ❯

work is impactful and varied, often at the leading edge of technology. Our clients choose Instil because we are seen as a cut above. We are looking for a Principal Software Engineer to join our growing business and play a pivotal role in leading the development of next-generation products that shift the dial for our global … customers. As a Principal Engineer, you will care about your craft and the success of our customers and their users. Most of your time will be spent writing code and leading teams to deliver business-critical outcomes successfully. You will also be a team player who enjoys contributing to company culture and fostering the best from your colleagues. … how we work. Proactively contribute to a team culture that values quality, robustness, and knowledge sharing. Need to have: A minimum of 8 years post-graduate experience in the software industry. Expertise in Java, Kotlin, Typescript, or C#. Expertise in React or Angular. Experience developing cloud-native solutions and modern frontend applications. Experience developing secure and robust architectures. Experience More ❯

Principal Software Engineer (Rates & FX) page is loaded Principal Software Engineer (Rates & FX) Apply locations Belfast time type Full time posted on Posted 4 Days Ago job requisition id R3782 Role Overview As a Principal Software Engineer at TP ICAP you will be part of a talented team delivering business critical … software for the internal broking division and their external customer base. You will work within an Agile environment, from design through to implementation, with a strong focus on continuous improvement whilst working collaboratively as part of self-organising, cross-functional team with a focus on continuous integration and deployment. Role Responsibilities Lead and manage a cross-functional team of … engineers working on innovative Front Office solutions for our Rates & FX business lines Work closely with principal engineers in other regions to set and implement standards for engineering excellence Work closely with Solution Architects and Enterprise Architecture to build solutions that align to the IT strategy/vision Take ownership of, and be accountable for, the delivery and quality More ❯

We are a technology-driven company building high-performing, scalable, and resilient software solutions. Our teams work with a modern tech stack including .NET, MongoDB, AWS, Jenkins, SQL Server, and streaming technologies. We’re looking for a hands-on Principal Engineer who can code, design scalable systems, manage Staff Engineers, and drive technical excellence across multiple teams. … This role is perfect for a technical leader who still enjoys writing code while shaping architecture and mentoring engineers. About the role As a Principal Engineer, you will play a critical role in: Architecting scalable, high-performance systems Coding and reviewing mission-critical features (at-least 60% hands-on) Managing and mentoring Staff Engineers & Senior Developers Driving best … practices in software development and AI-powered engineering Owning non-functional requirements (NFRs) such as security, scalability, and reliability Optimising cloud infrastructure and CI/CD pipelines If you thrive on solving complex technical challenges, leading by example, and empowering teams, this is the role for you! Key responsibilities Hands-on coding (at least 60% of the time), working More ❯

the engineering of Disney Entertainment & ESPN digital and streaming products and platforms. This includes product engineering, media engineering, quality assurance, engineering behind personalization, commerce, lifecycle, and identity. As a Principal Software Engineer, you will be part of a diverse and talented organization focused on building and maintaining complex sports platform services and applications for ESPN. You will … Document architectural platform frameworks for shared solutions across teams. Lead code and architectural reviews. Conduct competitive backend industry research. Basic Qualifications Bachelor's degree in Computer Science, Information Systems, Software, Electrical or Electronics Engineering, or comparable field of study, and/or equivalent work experience. 10+ years relevant industry experience. Mastery of backend platform development technologies and principles. Mastery … of software architectural patterns. Extensive experience with Cloud-based architecture. Extensive experience with Java, Kotlin, Rust, Go or other system level languages. Experience with task Automation (GitLab Pipelines, GitHub Actions, TeamCity). Experience with multiple database technologies such as MySQL, Postgresql, RDS, Cassandra, Mongo, etc. Experience using enterprise-grade frameworks such as Spring Boot. Strong communication skills and attention More ❯

Principal Software Engineer - TS, React, Node, AWS - £105k 2 days p/month in the Manchester area Would you like the opportunity to work for a leading retailer in the automotive sector who are currently looking for a Principal Software Engineer to join their growing tech team. The company is committed to providing a … and internal teams. Driven by innovation and a passion for the industry, the company continually evolves its digital infrastructure to remain at the forefront of the market. As a Principal Software Engineer, you will be working across their stack using JavaScript, TypeScript, React, Next.js, Node.js, and cloud-native technologies. This role is hands-on! Core requirements: Commercial … Strong expertise in designing and maintaining scalable, high-performance web applications Deep understanding of Unit Testing frameworks and a commitment to writing clean, testable code If you’re a Principal Software Engineer (React, Node.js, AWS) who enjoys the idea of working in the automotive sector, please apply. More ❯

Principal Software Engineer | Node | TypeScript | APIs | AI | Greenfield | AWS | Microservices | £110,000-£115,000 + 15% Discretionary Bonus + Benefits Method Resourcing is thrilled to be partnering with a global leader in the travel services and benefits sector. They're looking for a Principal Software Engineer to drive innovation and drive forward greenfield functionality … as the company dives into AI. The role: As a Principal Engineer, you will take charge of a newly launched greenfield project, leading its technical development from the ground up. This is a rare opportunity to create a modern, scalable system using the latest technology. Your role will involve defining the architecture, making crucial technical decisions, and supporting … apply today or send your CV to . Please note: My client cannot offer sponsorship and can only accept candidates with the right to work in the UK . Principal Software Engineer | Node | TypeScript | APIs | AI | Greenfield | AWS | Microservices | £110,000-£115,000 + 15% Discretionary Bonus + Benefits RSG Plc is acting as an Employment Agency More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

something much more ambitious: a smart, intuitive app that removes the stress from travel and enhances every step of the journey. To support this mission, theyre looking for a Principal Software Engineer who can lead from the front, shape architectural decisions, and mentor across teams. This is a high-impact, high-autonomy role where your technical vision … React Native (a bonus) Theyre looking for someone who brings deep technical insight, but also pragmatism someone who builds for impact, not complexity. What youll bring: Experience operating at Principal or Staff Engineer level within modern product-led teams Expertise in scalable systems design and cloud architecture (ideally AWS) A track record of shaping engineering direction across teams More ❯

This role is pivotal in leading the development of user-facing Ground Control Station (GCS) software designed to enable operators to remotely control and monitor autonomous vehicles beyond visual line-of-sight. This involves creating robust, intuitive interfaces using C++, Qt, QML, and JavaScript, alongside incorporating modern UX principles and rigorous testing methodologies. Key Responsibilities: Lead the design and … development of user-facing GCS software for autonomous vehicle monitoring and control. Build and maintain user interface software using C++ and Qt - QML and JavaScript experience would be useful here too. Engage with operators to gather requirements, validate usability, and refine user experience. Develop prototypes and storyboards to capture user requirements and iterate on design concepts. Ensure software robustness through rigorous testing, validation, and performance optimisation. Collaborate with cross-functional teams, including autonomy and hardware engineers, to integrate software solutions. Document and maintain codebases with a focus on readability, scalability, and maintainability. Provide technical leadership and mentorship to junior developers. Job Requirements: Extensive experience in C++ and Qt, ideally including QML and JavaScript. Strong understanding of More ❯

Principal/Senior Java Developer – Full Stack | Leeds (Hybrid) | £70,000 We're working with one of Yorkshire’s most exciting and innovative tech companies – a fast-growing SaaS business that's making waves globally with its cutting-edge BI and AI platform. As their exclusive recruitment partner, we’re now looking for a Full Stack Java Developer to More ❯

Job Title: Principal Software Engineer-Core Java Location: Vaishnavi Tech Park, Bellandur, Bengaluru, KA About Us smartShift is an industry leader in providing automation solutions for the modernization of SAP custom ABAP code. We are a 300 person, Boston-based company with operations in Germany, UK, Nordics, and India, and are experiencing profitable growth of over More ❯

Title: LEAD/PRINCIPLE/SENIOR .NET DEVELOPER (4.5 day week only with flexi and wfh options) INDUSTRY: GLOBAL MEDICAL SOFTWARE SOLUTIONS ORG - Technology that saves/supports peoples lives Benefits: Salary: £45,000 to £55,000 + dependent on experience 25 days holidays + bank holidays Flexible working including Fridays afternoons off 4.5 Day week only Training to … MCSD and TOGAF an option Location: Leeds (EAST) You can pick and choose hardware/software Very strong team atmosphere Company nights out Events Free parking Fruit baskets/cakes Fully subsidised canteen Up to 9% combined pension contribution Private Healthcare for the employee Free eye tests Cycle to work scheme Retail discounts Possibly latest windows phone - depending on … and as such also have roles at junior, mid and senior levels; please feel free to recommend people you'd like to work with. Your role as a principle engineer is to design, develop and deliver robust and reliable software within suite of applications that enable and support independent living. Through your role you will use a range More ❯

Principal Software Engineer – Manchester – eCommerce - 90k+10% Bonus Great opportunity for a Principal Software Engineer to join a Manchester based eCommerce giant as they work on a large-scale digital re-platform across the estate to MACH and Event-Driven Architecture. Key Technical Skills JavaScript/Typescript React, Next.js, GraphQL Node AWS, Lambdas, Serverless Event More ❯