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Join OCI’s Edge Security team as a Principal Engineer to architect and deliver cloud-scale DDoS protection. Mentor engineers, influence cross-org roadmaps, and collaborate with Product, SRE, and Network Engineering from concept to GA. This role requires deep expertise in Linux networking data path

Principal Software Engineer / Tech Lead / Founding Engineer opportunity - Tech Start-Up- Remote UK wide - Up to 120k. Morson Edge are delighted to have teamed up with a Tech4Good start up on their search for their first Software Engineering hire. The client are completely open on what the title of t

Principal Software Developer – Manchester (central) 3 days a week in office with flexible start/finish – strong benefits – up to £90,000 (flexible for the right person). I’m working with a high‑growth tech business looking for a Principal Software Developer to take a leading, hands‑on r

Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. Provide leadership and mentorship across multiple engineering teams.

Principal Front End Software Engineer with a passion for code, architecture, best practise, and a huge believer in driving what quality engineering looks like required by health tech success story. Working remotely (within UK only) with in person engineering get togethers quarterly (London), we are

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.

Principal Software EngineerPortsmouth | Hybrid, 3 days onsite£75,000-£85,000 plus bonus and benefitsThis Principal Software Engineer role is designed for a hands-on technical leader with strong C++ and Unreal Engine expertise, working at the forefront of complex, performance-critical software deli

You'd report to the Head of Engineering and would work as part of a team of Principal Software Engineers responsible for collaborating with Architects and Product Owners to lead the re-architecture of existing platforms to a cloud-native, event-driven, microservices architecture. Opportunity for a P

A specialist cloud consultancy in London seeks a Principal Software Engineer to lead software delivery engagements. This hybrid role requires strong experience in modern software architecture and a consulting mindset. Responsibilities include leading design and delivery of scalable systems, mentorin

You'd report to the Head of Engineering and would work as part of a team of Principal Software Engineers responsible for collaborating with Architects and Product Owners to lead the re-architecture of existing platforms to a cloud-native, event-driven, microservices architecture. Great opportunity f

A leading global technology provider is looking for a Software Engineer in London to drive technical excellence and mentor engineering talent. Join a team committed to shaping a best-in-class engineering culture and making a meaningful impact in technology.

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.

A leading technology solutions provider in London is seeking a Principal Software Engineer to guide technical direction and deliver high-quality solutions for clients. The candidate will leverage extensive experience in consulting and software engineering to drive innovation and mentor teams. Respon

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.

At least 7+ years of experience in software engineering. Lead small delivery teams and oversee the line management and performance of engineering staff. Extensive experience with a variety of software modelling and simulation techniques.

Job Description 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.

NET Software Engineers to drive this evolution. They're engineering a robust, merchant-centric ecosystem built on quality, resilience, and scale - and they need exceptional. Drive performance optimisation and system reliability through intelligent engineering.

Job Description 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.

We’re looking for a Staff/Principal level Product Engineer (Individual Contributor) with a focus on frontend development to join our small, highly talented team at Gizmo. While we have a deliberately flat structure, this is a senior, high-impact role for an experienced engineer who can take owners

You’ll provide hands‑on technical leadership, 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. We’re looking for a Prin

A leading staffing agency is seeking a Principal Software Engineer for a remote role in the UK. The ideal candidate will possess expertise in multiple programming languages, including Python and JavaScript, and have a passion for creating high-quality software.

Elasticsearch - Principal Software Engineer II - Distributed Systems. Principal Software Engineer II. Supporting our support engineers with the harder problems.

A mission-led consultancy is seeking an experienced Principal Software Engineer (Java) to lead the design and development of secure software solutions for the UK Government and Defence sectors.

Principal Software Engineer – Experience Engineering Workstream. Anaplan is looking for a Principal Software Engineer to be the technical leader for a critical initiative within our Experience Engineering workstream. We are looking for a visionary and deeply technical leader who can navigate ambig

An exciting opportunity has arisen to join one of the fastest-growing and critical teams within the bank in their API division as a Senior Technical Leader or Principal Software Engineer. Expertise as a full-stack Java engineer, cloud engineering (AWS), database technology, and in particular API dev

Architect and implement new software solutions, leading the overall structural design and fostering engineering best practice within a small team. Join the Software Engineering team where you will play a crucial role in developing, enhancing, and transforming our investment reporting platform, Serpe

Our pay ranges for our Principal Engineer position within London is: £92-818-£116-122 GBP. Led the development and delivery of production-grade software using a variety of languages and frameworks, including but not limited to: Python, Java, JavaScript, TypeScript, React, Ruby, Scala, R, SQL, and

As a senior member of the development team reporting to an Engineering Manager, you will serve as a principal engineer. Your responsibilities will include designing fault‑tolerant microservices, building scalable web and mobile UIs, and fostering an engineering culture that prioritises metrics ove

As part of the M&S Software Engineering team, you’ll be joining a well-loved historic brand, working on solutions that serves millions of loyal customers and thousands of colleagues! With ethical values that run right through the company’s core and technology leaders that truly understand softwa

A global management consulting firm is seeking a Principal Software Engineer (Cloud) to join their Retail Solutions team in the UK. The ideal candidate will have strong cloud engineering skills and experience in software development, especially in JavaScript and Python.

We are seeking an ambitious, self‑motivated Principal Software Engineer to provide technical and strategic leadership for the Data team and shape the platform’s evolution. Principal Software Engineer - Data. Strong experience with cloud infrastructure and modern engineering practices, and the ab

Principal Frontend / Platform Engineer (Contract). Principal-level engineer who can own the frontend end-to-end,. This role goes beyond traditional frontend engineering.

We are looking for a Principal Software Engineer who will be a hands-on engineer responsible for fast development of strategic functionality, AI integrations in the core product, shaping the architecture, driving engineering excellence, and delivering complex features across our platform used by mil

A Fintech going through a huge transformation is looking for Principal Engineers to join the team and play a key role in shaping their future technology and engineering practices. As a Principal Engineer, you will apply your technical expertise and hands-on skills to tackle sophisticated engineering

Mentor engineers, influence cross‑org roadmaps, and collaborate with Product, SRE, and Network Engineering from concept to GA. Join OCI’s Edge Security team as a Principal Engineer to architect and deliver cloud‑scale DDoS protection. Own traffic engineering strategy (anycast, BGP policy, rout

As a Principal Systems Engineer, you’ll lead a team of talented, collaborative engineers working across Cloudflare’s ecosystem. Principal Systems Engineer - Billing. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a li

Principal Software Engineer | Payments | Credit Card Product. The team are hiring a Principal (or Staff) Software Engineer to drive and support the delivery of a new credit card product. They combine a modern, data‑driven approach to product development with software engineering best practices.

A leading eCommerce company in Manchester is looking for a Principal Software Engineer to spearhead a large-scale digital re-platforming effort.

As a Principal Engineer at JPMorgan Chase within the Accelerator, you are the heart of this venture, focused on getting smart ideas into the hands of our customers. Recruit, mentor and lead a lean, high‑impact engineering team. Formal training or certification on React engineering concepts and pro

Being an AI Principal Software Engineer at iManage Means…. Being an AI Principal Software Engineer at iManage Means…. Strong software engineering skills with a track record of building systems that scale in a SaaS environment.

As a Lead / Principal Software Engineer, you will:. Establish and mentor permanent engineering teams within agencies, transferring technical expertise and engineering best practices. Champion engineering excellence by influencing the adoption and continuous improvement of engineering standards and b

We are on the lookout for a Principal Software Engineer I to join our Elasticsearch - Distributed Systems team and focus on how Elasticsearch provides scale, performance, and resilience. Supporting our support engineers with the harder problems. You have experience managing projects involving multip

Get notified about new Principal Software Engineer jobs in London, England, United Kingdom. Join Monolith as a Principal Software Engineer. Establish engineering best practices and architectural patterns.

I am looking for a Principal Software Engineer to join a leading AI cybersecurity startup who recently secured an additional $20 million in Series A funding. This Principal Software Engineer role will pay up to £115,000 (DOE) along with benefits, including career development opportunities, home off

Principal Engineer – Role Overview. We are looking for a Principal Engineer who can bring a depth and breadth of experience to help shape this journey; working in a role with a high level of ownership, empowerment, impact and mentorship. We are looking for a Principal Engineer to serve as the tech

A leading retail technology firm is seeking a Principal Software Engineer for a 6-month contract in Manchester.

Principal Software Engineer - REMOTE. We are currently looking for a Principal Software Engineer. Experience with AI/ML-powered features and understanding new tooling and trends in the software industry.

Software Engineer, Principal - GenAI / ML. As a Principal Engineer, you will lead a high-impact team focused on advancing Infor MES by leveraging Infor OS technologies to design, develop, and deliver cutting-edge Generative AI and Machine Learning solutions. Collaborate closely with cross-functional