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Principal Software Engineer United Kingdom Jobs (On-site work)

10 Job Offers

Principal Software Engineer
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Principal Software Engineer sought by Mastercard to lead DevOps automation across on-prem and cloud infrastructure. Leverage Terraform, Ansible, Chef, and Kubernetes to build CI/CD pipelines and drive Infrastructure as Code. Requires 10+ years’ experience, strong Linux skills, and cloud expertise...
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United Kingdom , London
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Not provided
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Mastercard
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Principal Software Engineer
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Principal Software Engineer sought for a Luton-based role supporting mission-critical embedded systems. Requires ISTQB knowledge, strong test automation skills (Python, C++), and active SC Clearance. You will create automated test scripts, perform integration and regression testing, and collabora...
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United Kingdom , Luton
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74.00 GBP / Hour
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Morson Talent
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Principal Embedded Software Engineer
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Principal Embedded Software Engineer sought to lead embedded systems architecture and technical delivery in Bradford, UK. This senior, hands-on role demands advanced C/C++, RTOS, and multithreading expertise, plus electrical power systems knowledge. You will own the full software lifecycle, from ...
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United Kingdom , Bradford
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75000.00 GBP / Year
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Zenovo
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Principal Embedded Software Engineer
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Principal Embedded Software Engineer sought to lead architecture, technical delivery, and strategy for advanced embedded systems in Manchester. This senior, hands-on role demands expertise in C/C++, RTOS, real-time systems, and electrical power systems knowledge. You will own end-to-end product d...
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United Kingdom , Manchester
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Not provided
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Zenovo
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Principal Software Engineer
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Principal Software Engineer sought by RX Global in Richmond, UK. Drive domain architecture, mentor senior engineers, and own technical roadmaps for high-impact systems. Requires deep expertise in distributed systems, cloud-native AWS solutions, and legacy modernisation. Lead through influence, ba...
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United Kingdom , Richmond
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Not provided
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RX Global
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Principal Software Engineer
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Join Microsoft AI's health team in London as a Principal Software Engineer. You will translate cutting-edge AI research into transformative products, building a world-class health companion. We seek an expert in scalable systems (C#, Python, etc.) with a passion for robust, user-centric engineeri...
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United Kingdom , London
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Not provided
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Microsoft Corporation
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Principal Software Engineer
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United Kingdom , London
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130000.00 - 155000.00 GBP / Year
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Orbis Consultants
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Principal Software Engineer
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United Kingdom , High Wycombe
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Not provided
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CK Group
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Principal Software Engineer
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Join a high-growth tech firm in London as a Principal Software Engineer. Architect and scale high-throughput, event-driven systems in Golang, handling billions of monthly requests. Leverage your 8+ years of backend expertise in distributed systems, Kafka, and PostgreSQL within a top-tier engineer...
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United Kingdom , London
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170000.00 GBP / Year
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Orbis Consultants
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Principal Software Engineer
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Lead a major digital transformation as a Principal Software Engineer. This initial 6-month contract outside IR35 requires expertise in TypeScript (Node/React), AWS, and event-driven MACH architecture. You will re-architect platforms to cloud-native microservices, providing technical vision and go...
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United Kingdom
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550.00 - 650.00 GBP / Hour
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Morson Talent
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Until further notice

About the Principal Software Engineer role

Explore the pinnacle of a technical career with Principal Software Engineer jobs. This senior-level role represents the apex of individual contributor tracks, where technical mastery converges with strategic leadership. A Principal Software Engineer is not just a senior coder; they are the visionary architects and technical pillars of an organization, responsible for setting long-term technological direction and solving the most complex, large-scale challenges. Their work ensures that engineering efforts align with overarching business goals, creating robust, scalable, and future-proof systems.

Professionals in these roles typically shoulder a broad and impactful set of responsibilities. Central to their function is leading the architectural vision for major systems or entire platforms. They define the technical standards, select core technologies, and make critical decisions on system design with a focus on scalability, reliability, security, and performance. A significant part of their day involves deep collaboration, not only mentoring senior and junior engineers but also partnering with product managers, senior management, and other stakeholders to shape the technology roadmap. They are often the go-to experts for de-risking projects, conducting proof-of-concepts for new technologies, and providing technical guidance across multiple teams. Furthermore, they champion engineering excellence by driving initiatives around agile methodologies, CI/CD pipelines, DevOps practices, and robust quality assurance.

The typical skill set for a Principal Software Engineer is extensive and deep. A common requirement is 10+ years of progressive experience in software development, demonstrating a proven track record of designing, delivering, and maintaining complex, consumer-facing or enterprise-level systems. Expertise in modern technology stacks is essential, often including proficiency in languages like Java, Kotlin, C#, Python, or Go, and familiarity with front-end frameworks like React or Angular. A deep, practical understanding of distributed systems, cloud-native architectures (on platforms like AWS, Azure, or GCP), and containerization technologies like Docker and Kubernetes is standard. They are expected to be experts in API design, data modeling, and often, event-driven architectures using tools like Kafka. Beyond pure technical acumen, exceptional soft skills are non-negotiable. This includes superior communication abilities to articulate complex technical concepts to diverse audiences, strong leadership and mentorship capabilities, and outstanding analytical and problem-solving skills. While a Bachelor's degree in Computer Science is common, equivalent industry experience is often highly valued.

Ultimately, Principal Software Engineer jobs are for those who want to leave a lasting imprint on a company's technology. They are the strategic thinkers and technical pioneers who build the foundations upon which products and services thrive, making them one of the most critical and respected roles in the technology industry. If you are ready to guide technical strategy and mentor the next generation of engineers, exploring Principal Software Engineer jobs is your next career step.