1 to 25 of 373 Principal Engineer Jobs in the UK

Principal Engineer - Python, AWS, React, TypeScript, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, TypeScript, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated … working A Consulting background will be highly advantageous Pays £120k-£135k - + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, TypeScript, Microservices More ❯

Principal Engineer - Python, AWS, React, TypeScript, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, TypeScript, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated … working A Consulting background will be highly advantageous Pays £120k-£135k - + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, TypeScript, Microservices More ❯

Principal Engineer - Python, AWS, React, TypeScript, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, TypeScript, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated … working A Consulting background will be highly advantageous Pays £120k-£135k - + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, TypeScript, Microservices More ❯

Principal Engineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for Principal Engineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a Principal Engineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯

Principal Engineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for Principal Engineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a Principal Engineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯

Principal Engineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for Principal Engineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a Principal Engineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯

Principal Engineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for Principal Engineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a Principal Engineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯

Principal Engineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for Principal Engineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a Principal Engineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯

Principal Engineer - Python, AWS, React, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work on … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated knowledge … working A Consulting background will be highly advantageous Pays £120k-£135k - + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, Microservices More ❯

Principal Engineer - Python, AWS, React, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work on … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated knowledge … working A Consulting background will be highly advantageous Pays £120k-£135k - + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, Microservices More ❯

Principal Engineer - Python, AWS, React, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work on … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated knowledge … working A Consulting background will be highly advantageous Pays £120k-£135k - + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, Microservices More ❯

Principal Engineer - Python, AWS, React, TypeScript, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, TypeScript, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated … working A Consulting background will be highly advantageous Pays £120k-£135k + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, TypeScript, Microservices More ❯

Principal Engineer - Python, AWS, React, TypeScript, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, TypeScript, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated … working A Consulting background will be highly advantageous Pays £120k-£135k + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, TypeScript, Microservices More ❯

Principal Engineer - Python, AWS, React, TypeScript, Microservices OB have exclusively partnered with an AI Consulting firm who work with enterprise scale clients to transform them into AI & Data transformed businesses. Knowing how AI can transform enterprise scale companies, they are looking to bring in a number of highly skilled Principal Level Engineers to their team, to work … many more. The roles will be heavily weighted toward the Backend (80/20), but you will be expected to work across the Frontend and with Cloud-native Architectures. Principal Engineer - Python, AWS, React, TypeScript, Microservices Principal Engineer: 8+ years of commercial experience Experience guiding multiple teams and helping set technical direction My have strong demonstrated … working A Consulting background will be highly advantageous Pays £120k-£135k + discretionary bonus + excellent benefits package Hybrid working with 3-days a week required in London offices Principal Engineer - Python, AWS, React, TypeScript, Microservices More ❯

opportunities for all. We benefit from diversity. That said, we're far from perfect - we want to be more diverse and representative. Join us and help make that happen. Principal Software Engineer - £Excellent London Principal Software Engineer Principal Software Engineer The role We're looking for a Principal Software Engineer to join … our digital product delivery function. Red Badger delivers high quality digital products using a lean delivery process and multidisciplinary, cross-functional teams. The Principal Software Engineer is a senior technical leader with deep expertise in building and operating digital products, particularly within complex client environments and multi-team projects. This role is instrumental in shaping the technical direction … of client engagements and plays a key part in delivering high-quality outcomes through strategic influence, hands-on support, and deep domain knowledge. You will collaborate closely with Principal Product and Delivery roles, as well as Technical and Delivery Leads, to ensure that technology choices align with both client goals and Red Badger's value propositions. You will engage More ❯

LEAD/PRINCIPAL DEVOPS ENGINEER- EDV CLEARED PRINCIPAL DEVOPS ENGINEER- Permanent opportunity for a Lead/Principal DevOps Engineer with active enhanced DV clearance. - Salary up to £100,000 DOE + DV Bonus- Gloucestershire based offices - To apply, please call Laura Jackson on , or email with an up-to-date CV. WHO ARE WE … We're hiring for Lead and Principal DevOps Engineers to join a consultancy delivering cutting-edge solutions for industry-leading National Security clients. You'll have the opportunity to work across multiple high-impact, innovative and mission-critical projects, shaping solutions that make a real difference. Due to the sensitive nature of the work, an active Enhanced DV clearance … is essential. THE PRINCIPAL DEVOPS ENGINEER- Active enhanced DV clearance. - Gloucestershire based, or able to commute.- Experience as a hands-on technical DevOps Engineer and in a leadership role PRINCIPAL DEVOPS ENGINEER ESSENTIAL SKILLS- Strong experience operating in an SRE/DevOps environment - Expertise in containerisation technologies such at Docker or Kubernetes, for example. - Experience More ❯

LEAD/PRINCIPAL DEVOPS ENGINEER- EDV CLEARED PRINCIPAL DEVOPS ENGINEER- Permanent opportunity for a Lead/Principal DevOps Engineer with active enhanced DV clearance. - Salary up to £100,000 DOE - Manchester based offices - To apply, please call Laura Jackson on , or email with an up-to-date CV. WHO ARE WE We're hiring … for Lead and Principal DevOps Engineers to join a consultancy delivering cutting-edge solutions for industry-leading National Security clients. You'll have the opportunity to work across multiple high-impact, innovative and mission-critical projects, shaping solutions that make a real difference. Due to the sensitive nature of the work, an active Enhanced DV clearance is essential. THE … PRINCIPAL DEVOPS ENGINEER- Active enhanced DV clearance. - Manchester based, or able to commute to Manchester.- Experience as a hands-on technical DevOps Engineer and in a leadership role PRINCIPAL DEVOPS ENGINEER ESSENTIAL SKILLS- Strong experience operating in an SRE/DevOps environment - Expertise in containerisation technologies such at Docker or Kubernetes, for example. - Experience with More ❯

Principal Engineer role for one of the most exciting tech companies in the North West has come live. COMPANY: Recognised in the Times100 fastest growing companies, this challenger technology company continues to make a difference to its 5m customers, whilst providing real time data through its unique AI platform to its 600 clients/brands. Intro A key … hire within the engineering team, we're looking for a Principal Engineer to work closely with the Head of Engineering, to shape the technical direction across multiple product teams, ensuring that what we build is reliable, scalable, and impactful. You'll be the bridge between strategic thinking and pragmatic delivery, helping the engineering teams design systems that move … and continuous improvement. Partner with Product and Architecture leads to align technology with strategic goals. What do you need to be successful? We are looking for a high level Principal Engineer who has a passion for building scaleable products and want to join an energetic and passionate team on a mission to change the Financial Services landscape here More ❯

Principal Engineer role for one of the most exciting tech companies in the North West has come live. 🚀🚀 COMPANY: Recognised in the Times100 fastest growing companies, this challenger technology company continues to make a difference to its 5m customers, whilst providing real time data through its unique AI platform to its 600 clients/brands. Intro..... A key … hire within the engineering team, we're looking for a Principal Engineer to work closely with the Head of Engineering, to shape the technical direction across multiple product teams, ensuring that what we build is reliable, scalable, and impactful. You’ll be the bridge between strategic thinking and pragmatic delivery, helping the engineering teams design systems that move … and continuous improvement. Partner with Product and Architecture leads to align technology with strategic goals. What do you need to be successful? We are looking for a high level Principal Engineer who has a passion for building scaleable products and want to join an energetic and passionate team on a mission to change the Financial Services landscape here More ❯

Principal Engineer role for one of the most exciting tech companies in the North West has come live. 🚀🚀 COMPANY: Recognised in the Times100 fastest growing companies, this challenger technology company continues to make a difference to its 5m customers, whilst providing real time data through its unique AI platform to its 600 clients/brands. Intro..... A key … hire within the engineering team, we're looking for a Principal Engineer to work closely with the Head of Engineering, to shape the technical direction across multiple product teams, ensuring that what we build is reliable, scalable, and impactful. You’ll be the bridge between strategic thinking and pragmatic delivery, helping the engineering teams design systems that move … and continuous improvement. Partner with Product and Architecture leads to align technology with strategic goals. What do you need to be successful? We are looking for a high level Principal Engineer who has a passion for building scaleable products and want to join an energetic and passionate team on a mission to change the Financial Services landscape here More ❯

Principal Engineer role for one of the most exciting tech companies in the North West has come live. 🚀🚀 COMPANY: Recognised in the Times100 fastest growing companies, this challenger technology company continues to make a difference to its 5m customers, whilst providing real time data through its unique AI platform to its 600 clients/brands. Intro..... A key … hire within the engineering team, we're looking for a Principal Engineer to work closely with the Head of Engineering, to shape the technical direction across multiple product teams, ensuring that what we build is reliable, scalable, and impactful. You’ll be the bridge between strategic thinking and pragmatic delivery, helping the engineering teams design systems that move … and continuous improvement. Partner with Product and Architecture leads to align technology with strategic goals. What do you need to be successful? We are looking for a high level Principal Engineer who has a passion for building scaleable products and want to join an energetic and passionate team on a mission to change the Financial Services landscape here More ❯

for all. We benefit from diversity. That said, we're far from perfect - we want to be more diverse and representative. Join us and help make that happen. Freelance Principal DevOps Engineer - £day rate (outside IR35) London Principal DevOps Engineer Join a new discovery/greenfield project Project is to build a new payments platform for … of working Experience with multiple programming languages, in web and/or mobile and multiple paradigms (e.g. declarative, functional, object oriented ) Duration 6 months (Likely to extend) Immediate Interviews Principal Software Engineer The role We're looking for a Principal Software Engineer to join our digital product delivery function. Red Badger delivers high quality digital products … using a lean delivery process and multidisciplinary, cross-functional teams. The Principal Software Engineer is a senior technical leader with deep expertise in building and operating digital products, particularly within complex client environments and multi-team projects. This role is instrumental in shaping the technical direction of client engagements and plays a key part in delivering high-quality More ❯

Principal Engineer - Product Security (Product Security Analyst) - 6 month contract - Frimley, Surrey - £85.40 ph UMB or £63.21 ph PAYE (Inside IR35) The Umbrella rate quoted above is the Gross Umbrella rate (i.e. the rate we pay to the Umbrella Company inclusive of ALL employment costs). Please note, the rate paid by the Umbrella will be less, as … will a Limited Deemed rate or Agency PAYE rate. Please get in touch to discuss the rates via these different payment vehicles. The Role The PSA Principal Engineer will be a focal point for security and information risk matters within the Product Security Engineering (PSyE) team and will be able to apply their deep level of subject matter … such as Training Needs Analysis (TNA), Technical Publications, Cyber Incident Plans and Operating Instructions (list is not exhaustive). What are BAE Systems looking for from you? The PSA Principal Engineer will have a good understanding of the applicable regulations, standards, policies and guidance on information risk management, to be able to identify, analyse and evaluate information risks. More ❯

Principal Engineer – Electrical or Mechanical – Data Centres and Missions Critical UK-Wide – (London, Manchester, Birmingham, Newcastle, Glasgow, Cardiff and Bristol) We are a specialist recruitment agency partnering with a prestigious UK-based consultancy renowned for delivering large-scale, mission-critical data centre projects across the UK and Europe. As their project portfolio grows, we are seeking an experienced … Principal Engineer with strong leadership skills in either Electrical or Mechanical disciplines. This is an exceptional opportunity to lead at a strategic level, shaping the delivery of world-class hyperscale, colocation, and bespoke data centre solutions. We want to hear from Principal-level Electrical or Mechanical Engineers with extensive experience driving multi-disciplinary design teams and complex … sharing within the engineering teams Requirements Degree-qualified in Electrical or Mechanical Engineering (or Building Services) 12+ years’ progressive experience in engineering with at least 5 years in a principal or senior leadership role Proven track record of delivering complex hyperscale, colocation, or mission-critical data centre projects across UK and Europe Deep technical expertise in your core discipline More ❯

Principal Engineer Azure & IaC (Terraform, Pulumi) 90,000 95,000 Base Salary. Excellent Company Benefits (including paid technical training). Hybrid or Fully Remote Option Offices in England, Scotland & USA. On-Call Rota 1 week in 3 months. Paid travel to HQ for Product & Engineering meetups (1-2 times per month). Areti are delighted to be partnering … with one of the UKs fastest-growing SaaS businesses in the search for a Principal Engineer with Infrastructure-as-Code experience (Terraform, Pulumi) . This award-winning organisation has achieved over 40% growth in 2025 , expanding rapidly across the UK and North America . With a major multi-million-pound technology investment planned for the year ahead, this … is a rare opportunity to play a pivotal leadership role in shaping a modern, greenfield-style environment that underpins their continued success. The Role As a Principal Engineer , youll take a hands-on and strategic role within the engineering organisation, driving reliability, scalability, and performance across mission-critical systems. Youll guide and mentor platform, SRE, and DevOps teams More ❯