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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. This role requires deep expertise in Linux networking data path

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.

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.

Systems / Regulatory Software Engineer. Senior Systems & Regulatory Software Engineer. You will work at the heart of a multidisciplinary engineering team, helping to.

Touchstone Advisory, a leading UK independent valuation advisory firm, is seeking an exceptional Principal Software Engineer to lead the evolution of our proprietary valuation platform—from a proven proof of concept to a robust, market-ready product. As the technical leader of our software functio

Senior, Staff & Principal Engineers. Senior: 90-115k | Staff: 120-135k | Principal: 140-160k.

Principal Software EngineerSalary: Negotiableplus benefits, pension (7% contribution), 25 days holiday & life insuranceWe are looking for principal software engineers with diverse experience.

Principal Software Engineer Location: Edinburgh, United Kingdom Contract Duration: 12 months Rate: £63. Role OverviewAn experienced Principal Software Engineer is required to join a. UmbrellaWe seek an engineer with recent high-integrity or safety-critical industry experience (defence, aerospace, o

This is a hands-on, Principal-level Individual Contributor (IC) role designed for a technical pioneer. You will operate with significant autonomy, influencing the technical strategy for our key products and mentoring senior engineers. Mentor and guide senior and mid-level engineers on modern, sustai

About The RoleDeadline for applications: 11:59pm on 31st October 2025Were 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,.

This is a hands-on, Principal-level Individual Contributor (IC) role designed for a technical pioneer. You will operate with significant autonomy, influencing the technical strategy for our key products and mentoring senior engineers. Mentor and guide senior and mid-level engineers on modern, sustai

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

Touchstone Advisory, a leading UK independent valuation advisory firm, is seeking an exceptional Principal Software Engineer to lead the evolution of our proprietary valuation platform—from a proven proof of concept to a robust, market-ready product. You will be both the hands-on technical lead an

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. This role requires deep expertise in Linux networking data path

Touchstone Advisory, a leading UK independent valuation advisory firm, is seeking an exceptional Principal Software Engineer to lead the evolution of our proprietary valuation platform—from a proven proof of concept to a robust, market-ready product. You will be both the hands-on technical lead an

We are looking for principal software engineers with diverse experience.

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. We expect our Principal Softw

London – I'm HIRING a Principal Software Engineer (Full-Stack Java & React) 🏅. Connecting the best software professionals with top-tier opportunities within tech for impact businesses. Mentoring engineers and leading technical discussions.

Touchstone Advisory, a leading UK independent valuation advisory firm, is seeking an exceptional Principal Software Engineer to lead the evolution of our proprietary valuation platform—from a proven proof of concept to a robust, market‑ready product. You will be both the hands‑on technical lea

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

We’re looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. You’ll provide hands‑on technical leadership, working closely with senior stakeholders, mentoring engineers across multiple teams, and l

Principal Software Engineer (Frontend). As a Principal Frontend Engineer at Teya you will play a pivotal role in shaping our web platform that empowers merchants in the retail industry. Teya is a payment and software service provider headquartered in London serving small, local businesses across Eur

Creates / Maintains applications (utilities) for the project to improve team efficiency, such as hardware control for other engineering disciplines or automated data analyzers for software test. Under minimal supervision, leads software development activities including software requirements, archite

AS A PRINCIPAL SOFTWARE ENGINEER - METADATA, YOU WILL:. OUR IDEAL PRINCIPAL SOFTWARE ENGINEER WILL HAVE:. Solve real business needs at large scale by applying your software engineering and analytical problem solving skills.

A technology recruitment partner is seeking a Principal Software Engineer to lead technical direction in client projects in the United Kingdom.

You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment. Building and deploying scalable, secure, and compliant software at

Principal Software Engineer (16580). We are looking for a Senior Software Engineer to lead complex projects and innovate our architectural practices. This role involves steering the technical direction, mentoring junior engineers, and enhancing our software development lifecycle to maintain our edge

Software Engineer, Principal - Multi-Tenant Cloud. Software Engineer, Principal - Multi-Tenant Cloud. As a Principal Engineer in the MES Cloud team at Infor, you will lead the architecture, design, and implementation of the transition of Infor MES from an existing on-premises software solution to a

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

To you, a tech lead, staff, or principal engineer is someone who spends most of their time project managing or doing architecture reviews. While they lead product and technical areas and help other engineers plan their most challenging work, it’s not a requirement, nor do engineers need their sign

As our Principal Software Engineer, you ll be a technical authority across our digital platforms, combining architectural vision with practical delivery. This is a senior, hands‑on technical leadership role where you ll influence architecture, guide engineering standards, and deliver enterprise‑

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

A leading foreign exchange provider in the UK is looking for a Principal Software Engineer to shape their technology platforms.

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 independent valuation advisory firm in the UK is seeking a Principal Software Engineer who will guide the evolution of their proprietary valuation platform. This role involves taking ownership of a core product, leading a software team, and setting the technical direction. Ideal candidates

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,

Produce high-integrity, mission-critical software to defined engineering and quality standards. Contract Software Engineer (Ada) Real-Time Embedded. You’ll be trusted with complex problems, work closely with systems, hardware, and firmware teams, and play a key role across the full software lifecy

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

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.

Sign in to set job alerts for “Principal System Engineer” roles. Principal Systems Engineer, R2 Storage. Principal Systems Engineer (6 positions).

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. Principal SW Engineering or SW Architect roles. This is a hands‑on role that requires a strong

About the role:We are seeking an experienced, hands-on Principal Software Engineer to lead the architecture, development, and adoption of our Backstage platform. Principal Software EngineerElsevier is a global leader in advanced information and decision support for science and healthcare. Requir

We are looking for a Principal Software Engineer (we call them Principal Software Craftspeople) who shares the same values of pragmatism, professionalism and transparency as us to join our team. You bring deep hands-on experience in software engineering, particularly modernisation, with a track reco

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

Act as a trusted advisor to engineering teams, providing hands‑on guidance in design, implementation, and code reviews. Coach and develop senior engineers, fostering a culture of excellence, ownership, and continuous learning. Drive adoption of engineering best practices — testing, CI/CD, observ

A leading software company is seeking a Principal Software Development Engineer to work on CAD/Geometry products. Applicants should have a Bachelor's in engineering or Computer Science, with over 8 years in software engineering, particularly in CAD or 3D applications. This role involves developing s

Senior Systems & Regulatory Software Engineer. Systems / Regulatory Software Engineer. Safety-critical, regulated medical software.

We’re looking for a Principal Software Engineer to shape the technical direction of high‑profile projects and lead the delivery of modern, scalable software. You’ll provide hands‑on technical leadership, working closely with senior stakeholders, mentoring engineers across multiple teams, and