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Principal Software Engineer United Kingdom Jobs

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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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Until further notice
Principal Software and Controls Engineer
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Lead motor inverter projects as a Principal Software and Controls Engineer in Milton Keynes. You will drive PMSM control system development for automotive, aerospace, and defence applications. This role requires expertise in motor physics, control algorithms, and software strategies. Provide tech...
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United Kingdom , Milton Keynes
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Not provided
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T2M Resourcing
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Until further notice
Principal Software Engineer - Data
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Lead the evolution of a critical data platform as a Principal Software Engineer in London. You will provide technical leadership using C#/.NET and TypeScript, designing resilient data flows and scalable cloud infrastructure. This hybrid role offers significant benefits including private healthcar...
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United Kingdom , London
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Not provided
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Oxford Economics
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Until further notice
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
Principal Software Engineer
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Join a Manchester eCommerce leader as a Principal Software Engineer. Drive a large-scale digital re-platform to MACH and Event-Driven Architecture. Utilize JavaScript/TypeScript, React, Next.js, and AWS serverless. Enjoy a bonus, enhanced pension, and private healthcare.
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United Kingdom , Manchester
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80000.00 - 90000.00 GBP / Year
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Morson Talent
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Until further notice
Senior Principal Software Engineer
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Lead architectural development for cybersecurity products as a Senior Principal Software Engineer at Rapid7 in Belfast. This role requires 12+ years of Java experience and expertise in designing complex, scalable enterprise software. You will drive technical strategy, foster innovation, and champ...
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United Kingdom , Belfast
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Not provided
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Rapid7
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Until further notice
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.

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