Bristol, Stoke Gifford, Gloucestershire, United Kingdom Hybrid / WFH Options
Synoptix
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
Bristol, Avon, South West, United Kingdom Hybrid / WFH Options
Synoptix Limited
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Computer Futures
Principal Software Engineer - Lead the Future of UK GovTech Innovation Up to £100,000 + Premium Benefits Package Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and digital transformation across the UK? This is … more than just a job-it's a chance to build technology that matters , in a space where innovation meets mission-critical delivery. We're looking for a Principal Software Engineer to join a high-performing team at the forefront of UK GovTech. You'll architect secure, scalable platforms, mentor elite engineers, and shape technical strategy across programmes … that serve millions of citizens and protect national interests. Your Mission As a PrincipalEngineer, you'll be a technical leader, strategic thinker, and hands-on problem solver. You'll work closely with delivery teams, stakeholders, and government partners to ensure solutions are robust, secure, and future-proof. What You'll Be Doing: Architect cloud-native platforms using More ❯
Principal Software Engineer/Architect (C# .Net AWS) Remote/Bristol to £100k Are you a highly technical Principal Software Engineer with strong architecture and design skills? You could be progressing your career at a financial services tech consultancy that specialise in solutions for Pensions and Investment Managers. As a Principal Software Engineer/… collaborative with great communication skills and experience of coaching and mentoring You're comfortable working as part of a leadership team What's in it for you: As a Principal Software Engineer/Architect you will earn a competitive package: Salary to £100k 25 days holiday plus an extra day off for your birthday and additional three days … Illness Cover Paid maternity, paternity, adoption or shared parental leave Mostly remote/work from home Subsidised gym membership and more Apply now to find out more about this Principal Software Engineer/Architect (C# .Net AWS CQRS Event Sourcing) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths More ❯
Oxfordshire, Milton Hill, United Kingdom Hybrid / WFH Options
Mars Recruitment
Principal Software Engineer | C++ | Python | Linux Oxfordshire | Hybrid £65,000pa plus benefits: Do you enjoy technically leading and mentoring a team of Software Engineers utilising C++ & Python on Linux, passing on your knowledge and experience to help nurture and develop future Engineers? If so, this Principal Software Engineer role will be perfect for you. Our client … has seen rapid growth over the last few years, and to help develop their talented team of Software Engineers, they now seek a Principal Software Engineer who can technically lead, mentor and develop during an exciting period of innovation. On a day-to-day basis you will develop and support software applications and drivers for a range of … products. You will be technically responsible for ensuring projects meet internal and external customer requirements and completing concept designs through to production. The successful Principal Software Engineer will need the following qualification, experience and skills: A degree in a Software Engineering, Mathematics or Science/Materials subject Experience in ARM based software developments using C/C++ Experience More ❯
Nottingham, Nottinghamshire, England, United Kingdom Hybrid / WFH Options
Digital Waffle
Principal SecOps Engineer - Hybrid - Nottinghamshire - Up to £75000 + Bonus We're seeking an experienced Principal SecOps Engineer to take a leading role in strengthening our clients' security operations. This is a hands-on, strategic position within the Technical Operations team, where you'll set the direction for security practices, guide incident response, and support the … Healthcare cash plan, company pension, life assurance, and recognition schemes Flexible hybrid working model, with ongoing training and career development A vibrant culture with regular team socials and events Principal SecOps Engineer - Hybrid - Nottinghamshire - Up to £75000 + Bonus More ❯
Bracknell, Bracknell Forest, Berkshire, United Kingdom Hybrid / WFH Options
Comoro
Principal Sales Engineer Location: Remote (UK-based) – with travel to customer sites Salary: circa £140k +20% bonus + car allowance + extensive benefits package (DV cleared) Clearance Requirement: DV (Developed Vetting) or SC if willing to go through DV process Our client is at the forefront of digital transformation, supporting the world’s most essential organisations through their … visibility and insight at an unparalleled scale they help clients solve problems faster, secure what matters, and drive continuous innovation across their digital ecosystems. We are now seeking a Principal Sales Engineer to support the growth of UK public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a … with tools like Wireshark, Zeek, or similar platforms. Awareness of cybersecurity frameworks and best practices (e.g., NIST, ISO 27001) and how they apply to network assurance. Role & Responsibilities As Principal Sales Engineer, you will play a vital role in driving revenue by delivering technical presales support, demonstrating product value, and shaping best-fit solutions. Reporting to the Regional More ❯
Employment Type: Permanent
Salary: £130000 - £140000/annum 20% Bonus and Benefits
london, south east england, united kingdom Hybrid / WFH Options
Wave Talent
Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding PrincipalEngineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Wave Talent
Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding PrincipalEngineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
Principal Platform Engineer London/WFH to £150k Are you a technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently … in stealth mode. As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer … of Technology. Location/WFH: You'll be based in Central London, with flexibility to work from home twice a week. About you: You have experience in a similar Principal Platform Engineer role within start-up/scale-up environments with strong commercial acumen You have achieved a 2.1 or above BSc from a well renowned top world More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Client Server
Principal Platform Engineer London/WFH to £150k Are you a technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently … in stealth mode. As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer … of Technology. Location/WFH: You'll be based in Central London, with flexibility to work from home twice a week. About you: You have experience in a similar Principal Platform Engineer role within start-up/scale-up environments with strong commercial acumen You have achieved a 2.1 or above BSc from a well renowned top world More ❯
Manchester, Lancashire, England, United Kingdom Hybrid / WFH Options
Robert Walters
delivery of complex programmes and risk management. Due to continued growth and acquisition, they are now keen to expand their cyber security offering and will be appointing an experienced Principal Cyber Security Engineer, to join their UK cyber team. This role will pay a range up to £90,000 plus benefits with a home-based working model. As … an experienced Principal Cyber Security Engineer, you will design, implement and manage security measures to protect the Azure & M365 estates. Principal Cyber Security Engineer: Duties Implement/Manage security measures to protect Azure, M365, Cloud Infrastructure & Data Deep knowledge of Azure & M365 security services Ensure security of cloud infrastructure Identify & implement automation opportunities Coordinate/Manage … engineering projects Design/Develop/Maintain security architecture Mentor the engineering function, provide technical leadership Principal Cyber Security Engineer: Duties Proven experience with Azure & M365 security tools and technologies Deep knowledge of security frameworks and standards (NIST, CIS, ISO27001) Knowledge of scripting & automation tools (PowerShell, Azure CLI, Azure Logic Apps) Principal Cyber Security Engineer: Relevant More ❯
Birmingham, West Midlands, England, United Kingdom Hybrid / WFH Options
Robert Walters
delivery of complex programmes and risk management. Due to continued growth and acquisition, they are now keen to expand their cyber security offering and will be appointing an experienced Principal Cyber Security Engineer, to join their UK cyber team. This role will pay a range up to £90,000 plus benefits with a home-based working model. As … an experienced Principal Cyber Security Engineer, you will design, implement and manage security measures to protect the Azure & M365 estates. Principal Cyber Security Engineer: Duties Implement/Manage security measures to protect Azure, M365, Cloud Infrastructure & Data Deep knowledge of Azure & M365 security services Ensure security of cloud infrastructure Identify & implement automation opportunities Coordinate/Manage … engineering projects Design/Develop/Maintain security architecture Mentor the engineering function, provide technical leadership Principal Cyber Security Engineer: Duties Proven experience with Azure & M365 security tools and technologies Deep knowledge of security frameworks and standards (NIST, CIS, ISO27001) Knowledge of scripting & automation tools (PowerShell, Azure CLI, Azure Logic Apps) Principal Cyber Security Engineer: Relevant More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Computer Futures
Principal Software Engineer - Shape the Future of UK GovTech Up to £95,000 + Premium Benefits Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Lead Innovation. Drive Transformation. Make an Impact. Ready to take the reins on projects that power national security and digital transformation This is your chance to lead at … the intersection of technology and purpose . As a Principal Software Engineer , you'll architect cloud-native platforms , mentor elite engineering teams, and influence technical strategy across mission-critical government programmes . Your work won't just be code-it will shape the future of UK GovTech . Your Role in Action Architect secure, scalable, resilient systems using More ❯
Camberley, Surrey, South East, United Kingdom Hybrid / WFH Options
Morson Talent
PrincipalEngineer – Product Security Location: Frimley (hybrid – average of 2–3 days onsite per week) Rate: £85.40 per hour/umbrella (inside IR35), approx. £632 per day Contract: 6-months initially (potential for extension or to go permanent) Hours: 37 per week Clearance: Active SC Clearance required Restrictions: ITAR and “UK Eyes Only”, please note only sole British … citizens can apply About the Role We're seeking a highly experienced Principal Product Security Engineer to join one of our clients Product Security Engineering teams, supporting the delivery and through-life management of secure submarine systems and products. As a key focal point for security and information risk, you'll apply deep technical expertise to ensure that More ❯
Camberley, Surrey, South East, United Kingdom Hybrid / WFH Options
Telent Technology Services Ltd
team doing complex and critical work. Help build and keep the nation's critical infrastructure connected and protected 24/7. Reporting into the Head of Focal Engineering, the PrincipalEngineer will work on a number of exciting Wireless Design and Implementation projects for customers across England in the Education and Government sectors as well as others. This … design and implementation of enterprise-grade wireless network solutions across universities in England, leveraging Cisco and Juniper technologies to deliver secure, scalable, and high-performance connectivity. Act as the principal design authority, setting technical direction, standards, and best practices for campus wireless and wired infrastructure, ensuring alignment with university digital transformation objectives. Develop and review detailed low-level designs … focused discussions. Maintain active CCIE certification (Wireless or Enterprise Infrastructure) and ensure ongoing professional development to sustain expert-level technical credibility. Who you are: You're a CCIE level Principal Wireless Engineer with deep expertise in Cisco and Juniper technologies, driven by a passion for delivering world-class wireless connectivity. Key Requirements: Expert-level knowledge of Cisco and More ❯
Basingstoke, Hampshire, England, United Kingdom Hybrid / WFH Options
Roc Search Limited
Role: Principal Automation Engineer Location: Basingstoke, Hybrid working Salary: £75,000-£90,000 + car allowance + 16% Bonus Are you passionate about driving automation at scale? We're looking for a Principal Automation Engineer to lead the design and delivery of cutting-edge automation solutions across a global technology environment. In this senior role, you More ❯
Manchester, Lancashire, United Kingdom Hybrid / WFH Options
Robert Walters UK
expand its cyber security offering. They operate across multiple industries, including Energy, Utilities, Financial Services and Media, and provide solutions across strategy, delivery of complex programmes and risk management. Principal Cyber Security Engineer: Overview This role offers a salary up to £90,000 plus benefits with a home-based working model. As an experienced Principal Cyber Security … Engineer, you will design, implement and manage security measures to protect the Azure & M365 estates. Principal Cyber Security Engineer: Duties Implement/Manage security measures to protect Azure, M365, Cloud Infrastructure & Data Deep knowledge of Azure & M365 security services Ensure security of cloud infrastructure Identify & implement automation opportunities Design/Develop/Maintain security architecture Mentor the … experience with Azure & M365 security tools and technologies Deep knowledge of security frameworks and standards (NIST, CIS, ISO27001) Knowledge of scripting & automation tools (PowerShell, Azure CLI, Azure Logic Apps) Principal Cyber Security Engineer: Relevant Certifications Microsoft Cert: Azure Security Engineer Associate Microsoft Cert: Cyber Security Architect Expert certification Microsoft 365 Cert: Security Administrator Associate CISSP/CCSP More ❯
Winchester, Hampshire, England, United Kingdom Hybrid / WFH Options
Ada Meher
Principal Data Engineer – Winchester/London (Hybrid) - £84,000 + 10% bonus 1-2dpw in office | Greenfield Enterprise Data Platform Build | Flexible Working | Private Medical Ada Meher are working with the market leader in Digital Telecommunication & Broadcasting technology solutions as they recruit for a Principal Data Engineer to join them on their migration project from … business also has an extremely competitive benefits package including, but not limited to, Private Medical, enhanced pension contributions & wellness/gymflex programmes.We are expecting a strong response to this Principal Data Engineer role, so please apply send a CV in to today to avoid missing out More ❯
Rhosneigr, Gwynedd, United Kingdom Hybrid / WFH Options
BAE Systems
Job title: Principal Systems Engineer Location: Cowes, Broad Oak, Great Baddow - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence … green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Radar Systems Engineering team: You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging More ❯
Lossiemouth, Morayshire, United Kingdom Hybrid / WFH Options
BAE Systems
Job title: Principal Systems Engineer Location: Cowes, Broad Oak, Great Baddow - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence … green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Radar Systems Engineering team: You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging More ❯
Lincoln, Lincolnshire, United Kingdom Hybrid / WFH Options
BAE Systems
Job title: Principal Systems Engineer Location: Cowes, Broad Oak, Great Baddow - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence … green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Radar Systems Engineering team: You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging More ❯
Bedale, Yorkshire, United Kingdom Hybrid / WFH Options
BAE Systems
Job title: Principal Systems Engineer Location: Cowes, Broad Oak, Great Baddow - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence … green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Radar Systems Engineering team: You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging More ❯
Penwortham, Lancashire, United Kingdom Hybrid / WFH Options
BAE Systems
Job title: Principal Systems Engineer Location: Cowes, Broad Oak, Great Baddow - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) Put yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence … green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Radar Systems Engineering team: You will be working as a Principal Systems Engineer within our close-knit multi-function radar team of inter-disciplinary engineers, evolving our radar portfolio of existing and brand-new radar products to address emerging More ❯
Bristol, Avon, South West, United Kingdom Hybrid / WFH Options
MBDA
As a Future Products Principal Systems Engineer within the newly formed Future Products department; part of Missile Design UK: Emerging Portfolio & Capability function, you will be assigned to take on a variety of roles in support of MBDA's Vision 2040. Salary : Circa £55,000 depending on experience Dynamic (hybrid) working : 3-4 days per week on-site … for paternity leave, neonatal leave and fertility testing and treatments Facilities : Fantastic site facilities including subsidised meals, free car parking and much more... The opportunity: As a Future Products Principal Systems Engineer within the newly formed Future Products department; part of Missile Design UK: Emerging Portfolio & Capability function, you will be assigned to take on a variety of More ❯