REMOTE PRINCIPAL SOFTWARE ENGINEER

4 weeks ago


City of London Greater London, United Kingdom Primis Full time

Principal Software Engineer .NET £90,000-£100,000
Remote (UK)

Are you passionate about writing clean, scalable code and ready to shape a platform used by merchants across the globe?

We're working with a fast-growing global payment processing platform that’s scaling rapidly after a major acquisition. They are building a high-performance, merchant-first ecosystem that prioritises quality, resilience, and scalability - and they are searching for .Net Software Engineers to join them on their growth journey.

Elevate performance and reliability using smart, efficient engineering.
Instill best practices in system design, quality, and delivery.
Collaborate across engineering, product, and architecture teams to solve real problems the right way.

Languages & Frameworks : C#, .NET Core
Azure (or AWS), Infrastructure-as-Code
Data & Integration : SQL, caching, message brokers (e.g., Front-End : HTML, CSS, JavaScript
Engineering Practices : CI/CD, Behaviour-Driven Development, modern agile workflows

10+ years of hands-on coding and architectural leadership; Remote-first within the UK & Ireland
~45 days holiday , plus bank holidays
~ Private family healthcare
~ Annual learning & certification allowance
~ Clear career growth path, with or without stepping into management


Disclaimer: Research indicates that men will apply to a role when they only meet 50-60% of the descriptions, however, when looking at women and other minority groups, they can look for up to a 99% match in order to apply to a role. We encourage underrepresented talent to apply to all our roles & support accessibility needs.



  • London, United Kingdom Software Development & Engineering Full time

    🔥 Principal Software Engineer - Lead the Future of UK GovTech Innovation💰 Up to £100,000 + Premium Benefits Package 🏡 Remote-First | Just 1 Day Onsite Every 2 Weeks 🔐 SC Clearable | British Citizens Only 🚀 Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and...


  • London, United Kingdom Oho Group Ltd Full time

    Principal Software Engineer - Python - Fully Remote Experienced Python Engineer needed for an early-stage Start-Up that is already profitable and looking to expand the founding team. You will be looking to work for a Start-Up and be trusted to take responsibility on the development. Looking for a world class Python Engineer, with experience with Typescript...


  • London, United Kingdom Harnham Full time

    **Principal Python Engineer (start up)** **Up to £130,000 + equity + pension** **LONDON - HYBRID / MOSTLY REMOTE** **TECH STACK: Python, Kubernetes, Docker, Microservices, GCP** An extremely successful machine learning based start-up is hiring a Principal python engineer to join their expanding London-based team. They are seeking a motivated and...


  • City Of London, United Kingdom Bright Purple Resourcing Full time

    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. This is a unique opportunity to play a key role in the development of next-generation patient monitoring and connectivity solutions that make a real...


  • London, United Kingdom eFinancialCareers Full time

    REMOTE Principal Data Engineer (Architect Data Architecture Engineering Principal Lead Manager Java Python GCP AWS Cloud Trading Front Office Finance Financial Services Spark Kafka Agile Remote Data Lake Datalake Investment Banking Asset Management Manager)required by our fixed income trading software client in London. You MUST have the following: - Good...


  • City Of London, United Kingdom Perforce Software Full time

    Principal Professional Services EngineerJoin to apply for the Principal Professional Services Engineer role at Perforce SoftwarePerforce is a community of collaborative experts, problem solvers, and possibility seekers who believe work should be both challenging and fun. We are proud to inspire creativity, foster belonging, support collaboration, and...


  • City Of London, England, United Kingdom Fruition Group Full time £1,140,000 - £1,440,000 per year

    Principal Software EngineerLocation: London - 1x a monthSalary: £95,000 - £120,000 + equity + benefitsAn established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects...


  • City Of London, United Kingdom 8th Light Full time

    At 8th Light, we bring life to the best ideas. Founded in 2006 and headquartered in Chicago, we are a technology solutions provider that partners with organisations to solve meaningful challenges and drive sustainable growth. From early‑stage startups to global enterprises, we work across industries to optimise our clients’ digital products through...


  • Greater London, United Kingdom Free-Work UK Full time

    Principal Software Engineer – Free-Work UK Join to apply for the Principal Software Engineer role at Free-Work UK. Base pay range Job Title: Principal Software Engineer Location: Great Baddow – We offer flexible working arrangements, part time & accruing hours available. Please let us know if you would like to discuss these options. Salary: Up to...


  • Greater London, United Kingdom TPXImpact Holdings Plc Careers Full time

    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 use technology to create impactful, human-centred solutions that make a difference to users and organisations. We believe great...