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What are the opportunities for a Principal Software Engineer at Gearset?. As a product-driven company founded by engineers, we know the value of a great engineering culture, teamwork and tight feedback loops. Our small engineering teams start from a few core principles but evolve over time.

We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals.Beyond client work, we operate our own high-revenue web product with a website, mobi

PhysicsX in Greater London is looking for a Principal Software Engineer to lead a team in developing innovative software solutions.

C&D Talent Advisory is looking for a Principal Software Engineer to innovate and build next-generation healthcare AI products. Candidates should have substantial backend engineering experience, predominantly in Python, and a strong background in system design.

This is a hands‑on engineering role focused on embedded Linux systems, hardware integration, and low‑level software development within a multidisciplinary environment spanning embedded systems, cloud platforms, computer vision, and application software. Planet Pharma are looking for a highly ski

We need a Principal Engineer who is both an architect of engineering principles and a hands‑on build engineer. Retained Search: Principal Software Engineer (Platform) | London (Hybrid). Creatively integrating controls and compliance into the SDLC so they empower engineers to ship multiple times a

Consulting/Principal Software Engineer. About 7+ years of experience in Software Engineering, Quality Engineering, or related roles, contributing to complex systems in production. The SciVal Development Team is a cross-functional group comprising Frontend, Backend, and Quality Engineers who work clo

You’ll also mentor engineers, foster best practices in test automation, and help shape our quality engineering capability. Principal Software Developer in Test (SDET). Location: London (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent.

Mentor and support senior engineers, helping to raise the overall engineering capability. As a Principal Engineer at M&S, you’ll play a critical role in shaping our technical direction and delivering against our strategic goals. Acting as a senior technical leader, you’ll drive engineering excel

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

Principal Software Engineer with UK Security Clearance eligibility to lead software engineering efforts. This role involves hands-on technical leadership, shaping architecture, and mentoring engineers.

Following significant growth within their trading practice, they are looking to hire a Principal Software Engineer to lead complex, high-impact client engagements across data, AI, and software engineering initiatives. Strong software engineering experience with Python and modern cloud technologies.

Solid understanding of software engineering best practices, including testing, code review, and documentation. Experience in the energy sector or with computational modelling/simulation software. We provide electricity grid modelling software to accelerate energy planning in emerging markets and dev

Our pay ranges for our Principal Engineer position within London are: £92,818‑£116,122 GBP. Used context‑appropriate automated testing to inform software design choices and catch bugs. Coaching client engineering teams, transferring knowledge and leveling up practices.

We’re looking for a Principal Software Engineer to play a key role in shaping and evolving a scalable technology platform within a highly collaborative engineering environment. Principal Software Engineer (C#) | London | £110,000-£130,000. This is an opportunity to combine hands-on technical lea

Hold formal training or certification in software engineering concepts. Promote best practices in software engineering. As a Director of Software Engineering in the AI/ML & Data Platforms group, you will lead a technical area and drive impact across teams, technologies, and projects.

Senior/Principal Software Engineer. Department: Software Engineering. We’re looking for Senior and Principal Engineers who want to shape meaningful systems, influence technical direction, and work alongside capable people who care about doing the job properly.

Experience with containerization and orchestration technologies (Kubernetes).Ground Floor, Verse Building, 18 Brunswick Place, London, N1 6DZ.

Appvia in London is seeking a Principal Software Engineer to provide technical leadership in modern software systems. The role involves collaboration with delivery managers and engineers to enhance engineering standards and practices.

Mentor and support senior engineers, helping to raise the overall engineering capability. As a Principal Engineer at M&S, you'll play a critical role in shaping our technical direction and delivering against our strategic goals. Working within highly cross-functional teams spanning engineering, data

Our Software Engineers don't just implement solutions—they discover new patterns of working with AI that. Provide deep technical guidance to multiple engineering teams across projects. Collaborate with product and AI leadership to align software strategy with company goals.

Accenture Software & Platform Engineering is over 1,000 people strong and provides end-to-end product engineering solutions which deliver tangible value, fast. As part of our Software & Platform Engineering team, you’ll work with cutting-edge technologies and develop a wide range of new skills on

Join Mastercard’s Operations Automation Program as a Principal Engineer for our DevOps team that powers infrastructure automation across on‑prem data centers and the cloud using Terraform, Chef, Ansible, and other tools. Software Engineering and DevOps roles, including at least 2 years in a tech

A global financial services leader in the UK is seeking a Principal Software Engineer to enhance and deliver market-leading technology products.

Cross Border Talents is seeking a Principal Software Engineer to help architect next-generation healthcare AI products. The ideal candidate has over 5 years of experience in backend engineering, preferably with Python, and strong skills in systems design.

Principal Software Engineer role within the Engineering - Server division at MariaDB plc. Principal Software Engineer - Distributed. This position is open for remote work in India, focusing on high-level software engineering contributions.

MPI Limited is seeking a Principal Control Engineer to lead control system activities based in Lincoln, England. The role focuses on developing software engineering control solutions for retrofit projects, involves direct customer interaction, and oversight of system integration and testing. Candida

Understanding Recruitment is partnering with a rapidly growing start-up in London seeking Senior/Principal Software Engineers. Offering up to £150,000 plus equity, they welcome backend or full-stack engineers regardless of experience in Rust, Typescript, or React.

Work closely with other Senior Principal Engineers to further the agent patterns and ecosystem across Toast as a whole. Beyond being on the forefront of agent development, your scope will also include enablement and leadership for how software is developed at Toast through adoption of bleeding edge

We are now looking for a visionary Principal Engineer to help define the next generation of our platform. A passion for software craftsmanship, clean architecture, and scalable design. You’ll work hands-on with modern engineering tools and practices, partnering with talented squads to solve comple

Our Software Engineers don't just implement solutions—they discover new patterns of working with AI that. Track record of mentoring senior engineers and leading technical communities. We work with enterprise organisations on a global stage, reinventing how they design, build, and operate AI powere

We’re looking for a Principal Software Engineer to join the Elasticsearch - Search Scaling team. This is a principal software engineering role that entails using your vast knowledge in this space to define, direct, and build the next generation of Elasticsearch capabilities. Experience leading tec

The Principal Engineer is the most senior engineer in the company and plays a crucial role in delivering our business goals. Mentor and coach engineering managers, staff, and key engineers to develop technical and leadership skills. This role is aligned with Store Operations in Retail Domain and wil

Senior and Principal Engineers. You’ll help design and build modern cloud‑native services, guide engineering standards, and solve genuinely hard problems with our customers.

As a Principal Engineer you will act as a technical authority and role model for engineers across engineering teams / Agile Squads, helping them with design, problem solving and complex technical decisions. Principal Software Engineer Full Stack TypeScript. Principal Engineer / Developer (Full Stack

Seeking Principal Software Engineer with experience in the following areas:. Sony Music’s Product, Design, Engineering & Global Operations (PDEGO) team is seeking a Lead Software Engineer within our Pub Admin product team in our London King’s Cross office. Mentor more junior engineers and contri

Apply engineering expertise to deliver high‑value solutions across full development lifecycle. Play an active role in internal and regional engineering communities to shape conversations around technology. Solid full‑stack engineering experience across React, XJS, Node.

Are you passionate about building large-scale backend systems that power experiences for millions of players worldwide? Do you thrive on solving complex engineering challenges, influencing technical direction across teams, and mentoring other engineers? We are looking for a Principal Backend Softwar

A leading global professional services company is seeking a Manager for their Software & Platform Engineering team in Greater London. The role requires proven leadership and client-facing skills, with solid full-stack engineering experience, including React, Node.

Our client - a global automotive systems industry leader - is looking to hire an Principal AI Software Engineer (Java) to join them on an initial 6-month contract, with a view to transition to permanent employment. Exceptional problem-solving and engineering judgment. Customer facing software/platfo

You will be a key advocate for thoughtful, low‑complexity engineering solutions within the team, and a contributor to internal and regional engineering communities. Solid full‑stack engineering experience, working across the full development lifecycle.

I’m hiring multiple Principal Software Engineers for a Series A Scale Up in Central London that is moving quickly, building with AI as a real part of the product, and led by people who know how to scale. Interest in AI-enabled software development and modern engineering workflows. Strong experienc

This growing team of experts in flight and aviation is building a new platform and seeks senior engineers to join them.

Principal Software Engineer - Personalisation. As a Principal Engineer at M&S, you’ll play a critical role in shaping our technical direction and delivering against our strategic goals. Job Category Software Engineering.

As a Principal Software Engineer, you will play a hands‑on technical leadership role across Appvia’s software engineering engagements, helping lead the design, delivery, and evolution of modern software systems. Principal Software Engineer - UK Security Clearance eligibility required. You are a

As a Staff+ Software Engineer at Seeq, you will play a critical role in shaping the technical direction and architecture of our software platform. You will lead the design and development of complex software systems, working closely with cross‑functional teams including product managers, designers

Trust In SODA is seeking a Principal Software Engineer in Greater London to lead the development of a cloud security platform.