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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 Embedded Software Engineer. TalentEdge Technology are looking to hire a Senior Embedded Engineering Leader to take ownership of the firmware stack for a next-generation, AI-enhanced connected music hardware platform. This role is hands-on and deeply technical, suited to an engineer who enj

Principal Software Engineer Edinburgh An innovative and well-established med tech company are seeking a proven technical leader to join its R&D team basedin central Edinburgh as a Principal Software Engineer.

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 is an opportunity to make a significant impact in a dynamic engineering environment. This role entails coaching engineering teams, supportin

Principal Software Engineer (Docker Agents). Staff/Principal level or equivalent scope). Integrate into our AI engineering team building containerized agent infrastructure.

As a Principal Engineer in our Product Engineering team, you will be both the. You’ll mentor senior engineers, shape key technical decisions, and ensure our products meet the highest standards of quality, performance, and innovation. We’re seeking a deeply technical, product-minded engineer who

We are seeking a Principal Engineer (Platform) to lead the technical vision, strategy, and execution of our core platform systems. SRE, DevOps, or infrastructure engineering. Bachelor’s or Master’s in Computer Science, Engineering, or related field.

As a Principal Engineer in the Boost team, you’ll be part of a group of principal engineers who champion technical excellence. Introduction to loveholidays Engineering with our VP of Engineering (60 mins). Embed in mission teams to solve hard tech problems, coaching engineers hands‑on to instill

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. You will play a key role in architecting and developing hardware‑dependent software, ensuring seamless integration with custom hardware platforms, and contributing to medical‑grade syste

Principal Software Engineer, AI Platform Team - Europe Remote. Principal Software Engineer, AI Platform Team - Europe Remote. Create and influence engineering‑wide standards for GenAI, partnering with existing Engineering teams to promote adoption.

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.

London – I'm HIRING a Principal Software Engineer (Full-Stack Java & React) 🏅. Mentoring engineers and leading technical discussions. Confident mentoring engineers and leading technical decisions.

Principal Software Engineer / Developer (Rust Golang) London / WFH to £110k. As a Principal Software Engineer / Developer you will earn a competitive package:. Principal Software Engineer / Developer (Rust Golang Low Latency) opportunity.

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.

Principal Software Engineer (London Only). Our pay ranges for our Principal Engineer position within London is: £92-818-£116-122 GBP. Built high‑quality, maintainable software collaboratively, incrementally, and through an approach tailored towards the unique needs of the clients you’ve served

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

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

As a Principal Software Engineer, you will lead the architecture and development of highly advanced software systems. You will provide strategic technical direction, mentor senior engineers, and ensure that software solutions meet business and technical requirements. Define architectural standards a

We're looking for an exceptional, product-minded full-stack software engineer to join our engineering team & help scale Omnea with us. Sign in to set job alerts for “Principal Software Engineer” roles. Principal Generative AI Software Engineer - SVP.

You will have the opportunity to shape the direction of our projects while mentoring junior engineers and preparing for a future lead position. Strong background in software design patterns and architectural principles.

We are looking for a Principal Software Engineer who will play a defining role in shaping our platform, our teams, and our technical future. We design and operate a software platform that orchestrates robots, instruments, data pipelines, and increasingly AI-driven workflows — helping labs move fro

A leading tech firm based in London seeks a Principal Software Engineer to drive the development of scalable applications.

Champions quality and security, embedding testing and scanning into CI/CD pipelines and engineering workflows. Passionate about mentoring engineers, conducting code reviews, and driving technical excellence across teams. You will work with like-minded people from business, product and engineering fu

Member of Technical Staff - Principal Software Engineer. Profession: Software Engineering. Discipline: Software Engineering.

Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. At least 10 years of commercial software engineering experience, with a proven track record of leading the design and delivery of large‑scale, c

Principal Engineer – Join a profitable FinTech Scale-Up. As they continue to grow, they are looking for a Principal Engineer to lead the next phase of innovation across their most critical product. Lead the re-architecture of the team’s code, collaborating with principal engineers in other teams

They’re now looking for a Principal Software Engineer to provide senior technical leadership across multiple delivery engagements and to help shape how modern software is built, evolved, and maintained. We (SR2) have partnered with this highly regarded cloud and software engineering consultancy th

A leading software development firm in London is seeking a Principal Software Engineer to lead the architectural evolution of their platform. The ideal candidate has over 12 years of software engineering experience, deep expertise in distributed systems, and exceptional leadership skills.

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 technology company is looking for a talented principal engineer in Greater London. The ideal candidate will be responsible for managing complex technical problems, leading engineering teams, and developing innovative products that enhance user experience.

A leading crypto platform in London seeks a Principal Software Engineer to define technical direction and tackle complex architectural challenges. The ideal candidate has 8-10 years of software development experience, primarily in Python. Responsibilities include influencing software architecture, m

As a Principal Software Engineer, you will play a senior technical leadership role across Appvia’s software delivery engagements. We partner with customers across public and private sectors to reduce technical debt, improve engineering practices, and support long-term system evolution using modern

Salary: Circa £65k + Up to 15% Bonus Sponsorship:**Unfortunately, we are unable to offer sponsorship for this role If you're a Principal Software Engineer, who enjoys architecting complex systems, owning technical decisions, and crafting Python‑powered solutions that make a real impac

A leading technology company is seeking a Principal Software Engineer in London to collaborate with AI researchers and bring innovative health solutions to market. The ideal candidate will have a background in software engineering, knowledge of distributed systems, and a passion for user experience.

Principal Software Development Engineer - CAD/Geometry page is loaded## Principal Software Development Engineer - CAD/Geometrylocations: EMEA - United Kingdom - London - Agar St: EMEA - United Kingdom - Birmingham: EMEA - United Kingdom - Offsite/Home: EMEA - United Kingdom - Cambridge - Aut

They are looking for a Principal Software Engineer to help shape the future of digital services. Setting the technical direction of software engineering and helping to define best practice. You'll join a forward-thinking Head of Engineering who is transforming the team to deliver smarter, more effic

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

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

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

This 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 delivery. The position sits within a fast‑growing software and data science consultancy delivering e

As our Principal Software Engineer, you ll be a technical authority across our digital platforms, combining architectural vision with practical delivery. Mentor and influence engineers at all levels, raising the bar for technical excellence. This is a senior, hands‑on technical leadership role whe

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. A strong understanding of software engineering best practices such as version control, CI/CD, au

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

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

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.