1 to 25 of 40 Principal Engineer Jobs in London

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 solutions. This … successful? Degree in Computer Science or equivalent hands-on experience. 7+ years' experience in backend software development, including several years in a senior or principal-level engineering role. Expertise in Python (or a similar backend language), with proven experience designing distributed systems, APIs, and microservices at scale. Deep understanding ...

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-generation digital … successful? Degree in Computer Science or equivalent hands-on experience. 7+ years' experience in backend software development, including several years in a senior or principal-level engineering role. Expertise in Python (or a similar backend language), with proven experience designing distributed systems, APIs, and microservices at scale. Deep understanding ...

Principal Software Engineer | Front End (React) | London, Hybrid Our client is a forward-thinking global firm redefining the future of finance through technology. They are looking for a Principal React Engineer who can set the technical direction for the front-end, champion best practices, and still … without ego. Curious, always learning, and keen to improve both the codebase and the way the team works. If you are interested in this Principal Software Engineering Role, please respond to this advert directly with your updated CV or email it to chantelle.smith@sourcegroupinternational.com ...

Principal Azure Engineer Location: London Start Date: 5th January Clearance Required: Active SC and NPPV3 We are seeking an experienced Principal Azure Engineer to join a high-profile central government project. This is a fantastic opportunity for a seasoned professional with strong technical expertise and proven ...

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 solutions click ...

Opportunity - Principal Telecoms Engineer - Initial 12 Month Outside IR35 Contract Our Client has a requirement for a Principal Telecom Engineer , who will be required to work on a contract basis in Woking. Location : Central London, SW1V 1PX Contract Length: Initially 12 Months IR35 Status: Outside IR35 … detail and offer sound advice to both clients and candidates. We actively recruit at all levels and this is a superb opportunity for a Principal Telecom Engineer looking for new employment. As part of putting people first, we strive to be an equal opportunities employer ...

maintain our professional, supportive and entrepreneurial working culture that we all enjoy. What You'll Do We're looking for a highly skilled Principal Engineer with a passion for data, cloud technologies, and building robust, scalable solutions - who also brings strategic product thinking and cross-functional leadership . ...

international organisation in the aviation sector is seeking a Principal Engineer to lead the design and delivery of enterprise-scale engineering solutions supporting AI-driven platforms. This is a senior, hands-on role embedded within a major airline environment, with responsibility for setting technical direction and ensuring solutions … Responsibilities Design and own architecture across all layers of the technology stack. Write production-grade code and deliver enterprise-ready solutions at pace. Engineer scalable, modular platforms capable of deployment across multiple operating companies. Collaborate closely with product, data engineering, data science, analytics, and frontend teams to deliver cohesive ...

international organisation in the aviation sector is seeking a Principal Engineer to lead the design and delivery of enterprise-scale engineering solutions supporting AI-driven platforms. This is a senior, hands-on role embedded within a major airline environment, with responsibility for setting technical direction and ensuring solutions … Responsibilities Design and own architecture across all layers of the technology stack. Write production-grade code and deliver enterprise-ready solutions at pace. Engineer scalable, modular platforms capable of deployment across multiple operating companies. Collaborate closely with product, data engineering, data science, analytics, and frontend teams to deliver cohesive ...

Principal Engineers provide technical leadership at Amazon.com. They help establish technical standards and drive Amazons overall technical architecture, engineering practices, and engineering methodologies. They work on our hardest problems, building high quality, architecturally sound systems that are aligned with our business needs. They think globally when building systems, ensuring … Amazon.com builds high performing, scalable systems that fit well together. Principal Engineers are pragmatic visionaries who can translate business needs into workable technology solutions. Their expertise is deep and broad. They are hands on, producing both detailed technical work and high-level architectural designs. Basic Experience Knowledge of object ...

Principal Mechanical Engineer - Data Centres Leading Global Consultancy Do you have the following skills, experience and drive to succeed in this role Find out below. London | Hybrid Working Excellent Salary + Bonus + Career Progression Are you an experienced Mechanical Engineer with data centre expertise This ...

Principal Engineers provide technical leadership at They help establish technical standards and drive Amazons overall technical architecture, engineering practices, and engineering methodologies. They work on our hardest problems, building high quality, architecturally sound systems that are aligned with our business needs click apply for full job details ...

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 solutions. This … 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, performance optimisation). Strong understanding of cloud-based infrastructures ...

Principal Full Stack Engineer – React, Typescript, C#, .NET Core, MySQL, AWS Services (serverless) Outstanding permanent opportunity to join this global, market leading, B2B SaaS tech business as a Principal Engineer (Full Stack)/Lead Full Stack Developer with deep expertise in React, Typescript, C#, .Net Core … quality. Drive modernisation: sunset legacy code, reduce tech debt, and improve performance, reliability, and observability. Who We're Looking For: Highly experienced full stack engineer with strong proficiency in C# .NET Core and/or Node.js, plus React + TypeScript expertise. Proven experience designing event-driven, microservices architectures ...

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 solutions click ...

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 … complex technical challenges. About You Professional knowledge and experience Essential Extensive experience in software engineering, with a focus on large-scale, complex systems. Polyglot engineer comfortable working across multiple languages and frameworks (weve used Python, Java, Kotlin, Node.js, C#, JavaScript, Express, React and Next.js to name a few). ...

Principle Engineer This is a role for engineers who like big systems, hard problems, and meaningful ownership. You'll be joining a team operating at the intersection of software, hardware, and AI. The engineering team is small, ambitious, and deeply technical, building the orchestration systems that keep thousands ...

Urgent 12-month Hybrid AI/Machine Learning (ML) engineer role paying £400 a day inside IR35 in central London with 2-3 days in the office a week. Start before Christmas, I need to send candidates today for this to be possible. Interviews next week apply asap/ ...

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 ...

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 ...

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 ...

Generative and Applied AI adoption — guiding clients from uncertainty to confident, delivering production-grade AI implementation. The Role We're looking for a Principal Applied AI Engineer to shape and build AI systems that make a tangible impact. You'll work closely with clients and cross-functional teams … trusted technical advisor, communicating complex AI concepts clearly to non-technical audiences. Skills, Knowledge and Expertise: Proven experience in a senior or principal engineering role within an AI technology consultancy or AI-driven product organisation, delivering AI models, systems and products to production. Strong foundation in software engineering with ...

Urgent 12-month Hybrid AI/Machine Learning (ML) engineer role paying £400 a day inside IR35 in central London with 2-3 days in the office a week. Start before Christmas, I need to send candidates today for this to be possible. Interviews next week apply asap/ ...

bring humanity, connection, and empathy back to business. Join over 5,000 people across the globe who think that's work worth doing. Principal Solution Engineer Why We Have This Role Our presales organization is a group of highly driven individuals dedicated to closing experience gaps. The Solution … Engineer team specializes in working with large, global customers to architect world-class experience management (XM) programs that drive a culture of action and create tangible business value. Solution Engineers work hand in hand with our sales and GTM organisation. This person will dive deep on key deals ...

10+ years in enterprise engineering, ideally in AI-driven environments. Expertise in a range of programming languages, tools, and technologies. Hands-on experience with cloud platforms (AWS preferred). Strong knowledge of API integration. Track ...