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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 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

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 believe great engineering happens when teams collaborate,.

We are seeking an experienced, hands-on Principal Software Engineer to lead the architecture, development, and adoption of our Backstage platform. Good years of professional software engineering experience, including leadership of complex, multi-team initiatives. BS in Engineering/Computer Science o

A leading software development company in the United Kingdom seeks a Principal Engineer to drive best practices in cloud-native technologies and AI tools. This role entails coaching engineering teams, supporting complex problem-solving, and influencing technical strategies across the organization. I

Principal Software Engineer (Docker Agents). You’ll define the technical vision, lead architecture decisions, and partner with engineers and leaders across Docker to bring containerized agent capabilities into Docker’s developer experience. Mentorship & Enablement: Mentor senior engineers, raise

A leading cloud engineering consultancy based in Greater London is seeking a Principal Software Engineer to provide technical leadership and direction in software delivery. Applicants should possess a solid background in software engineering, particularly with React and microservice architectures.

As a Principal Engineer in the Boost team, you’ll be part of a group of principal engineers who champion technical excellence. Experience with AI‑powered feature development and leveraging AI tooling for software delivery, with enthusiasm for transforming how we build and deliver software. Embed

Principal Software Engineer, Load Balancer - Isovalent. Cisco Isovalent is seeking a skilled and experienced Software Engineer to develop its next generation Load Balancer leveraging the technology developed with Cilium. Cisco Isovalent builds open‑source software and enterprise solutions solving

With more demand for their product than they can currently meet, we're looking for a Principal Engineer to grow their engineering team, with strong experience in:. Software Development and IT Services and IT Consulting.

We are seeking an experienced Embedded Linux Software Engineer to join our client’s multidisciplinary team. Architect, develop, test, and debug embedded software for custom computing and medical devices. Conduct code reviews and contribute to software infrastructure for smooth deployments.

As a Principal Software Engineer you will split your time between architecture, design, hands‑on coding and mentoring, team leadership and strategy. As a Principal Software Engineer / Developer you will earn a competitive package:. Principal Software Engineer / Developer (Rust Golang Low Latency)

London – I'm HIRING a Principal Software Engineer (Full-Stack Java & React) 🏅. Leading the design and delivery of modern, scalable software systems. Improving engineering practices around testing, automation, and developer productivity.

We are seeking a Principal Engineer (Platform) to lead the technical vision, strategy, and execution of our core platform systems. As a senior technical leader, you’ll shape our platform architecture, drive automation and observability initiatives, and mentor engineering teams in building robust,

Principal Software Engineer (London Only). Our pay ranges for our Principal Engineer position within London is: £92-818-£116-122 GBP. From early‑stage startups to global enterprises, we work across industries to optimize our clients’ digital products through product strategy innovation, experi

A leading UK Challenger Bank is seeking Mid-Senior Software Engineers to contribute to their growth. This contract role, based in Liverpool, requires collaboration and mentoring within the engineering team. If you have experience with TDD, CI/CD and value engineering maturity, apply to join a dynami

Our Software Engineers don't just implement solutions—they discover new patterns of working with AI that. Represent the engineering organisation externally — at conferences, client meetings, and community events. Track record of mentoring senior engineers and leading technical communities.

A technology company is seeking a Principal Software Engineer II specializing in the storage engine for Elasticsearch.

We re seeking a Principal Embedded Software Engineer to take a leading role in the development and evolution of our embedded software across both new products and established designs. This position is ideal for an experienced engineer who enjoys guiding technical direction, mentoring others, and dri

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

A leading consultancy firm is seeking a Technical Lead - Principal Software Engineer to join their team in London or Cambridge. Ideal candidates will have over 8 years of experience in software engineering, a relevant degree, and strong leadership skills.

A leading electronics manufacturer based in Southampton is seeking a Principal Embedded Software Engineer to spearhead development and maintenance of a new system. This role requires a candidate with a strong background in embedded software, particularly in processor design and communication interfa

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 software e

Principal Software Engineer (DevOps)OracleUnited KingdomJoin 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 ro

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

Oliver Wyman is seeking a Principal Software Engineer (Cloud) to join our Retail Solutions team in the UK, with London or Newcastle being our preferred office locations but we can offer some flexibility. This is a hands‑on role that requires a strong SW engineering and cloud engineering foundation

Our Principal Software Engineers are members of the Software Engineering Practice leadership team with the responsibility to develop the capability of the practice to meet business needs and to accelerate the growth of the practice, their account and the wider business. Our Principal Software Engine

An innovative tech consultancy in the UK seeks a Principal Software Engineer to lead high-profile projects and influence technology strategy. You will manage a small group of engineers, mentor cross-functional teams, and advocate for modern engineering practices. Ideal candidates will have extensive

A leading biopharmaceutical firm in London seeks a Senior Principal Software Engineer to design cloud-native applications and maintain data pipelines. The ideal candidate will have a Bachelor's degree in Computer Science, extensive experience with full-stack development, and strong skills in Python,

A global healthcare leader in London is seeking a skilled software engineer to join our R&D Technology team. The ideal candidate will have significant experience in Python programming, cloud-native application architecture, and data engineering.

Principal Systems Engineer, R2 Storage. Senior/Principal Systems Engineer (4 positions). Software Engineering Manager - Systems Generalist.

Senior Principal Software Engineer. Software Engineering & Application Development. You will interact with architects, software and data engineers, AI/ML modelers, product owners as well as other team members across R&D.

Proven experience mentoring engineers, influencing large‑scale technical decisions, and driving cross‑team initiatives. As a hands‑on technical leader, you will set the engineering vision, drive technical excellence, and mentor teams to deliver exceptional web experiences that serve thousands

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.

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

Share knowledge with the wider engineering community, mentoring and developing those around you to improve the organisation. Experience across large engineering organisations.

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 looking for a Principal Software Engineer who will play a defining role in shaping our platform, our teams, and our technical future. Prior CTO (at a startup), Principal Engineer, or equivalent senior technical leadership experience is a strong plus. We design and operate a software platform

Our pay ranges for our Principal Engineer position within London is: £92-818-£116-122 GBP. From early-stage startups to global enterprises, we work across industries to optimize our clients’ digital products through product strategy innovation, experiential design, AI solutions, and deep enginee

Technical Lead - Principal Software Engineer. We are looking for a highly motivated individual to become a Software Engineering Technical team lead within our Project Delivery Model team. Degree in computer science or software engineering, with at least 8 years of relevant work experience, including

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

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

Principal Software Engineer - Data. 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. Mentoring and supporting other engineers through pairing, feedback, and knowledge sharin

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

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

As a Principal Systems Engineer, you’ll lead a team of talented, collaborative engineers working across Cloudflare’s ecosystem. Principal Systems Engineer - Billing. We are looking for an energetic, team‑focused engineer who is growth‑mindset oriented and able to drive their work from incept

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

We are looking for a Principal Engineer to serve as the technical anchor for our organization. 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, e