76 to 100 of 158 Principal Software Engineer Jobs in England

Principal Java Software Engineer London (Hybrid – 1–2 days/week onsite) 🚀 Join a FinTech Powering the Future of Payments Are you an experienced Senior/Principal Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core …/week in a London office 🌍 Opportunity to collaborate with major global banks 🚀 Fast-paced, product-led environment where your voice matters If you're a motivated Senior/Principal Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us. More ❯

Principal Software Engineer | Node | TypeScript | APIs | AI | Greenfield | AWS | Microservices | £110,000-£115,000 + 15% Discretionary Bonus + Benefits Method Resourcing is thrilled to be partnering with a global leader in the travel services and benefits sector. They're looking for a Principal Software Engineer to drive innovation and drive forward greenfield functionality … as the company dives into AI. The role: As a Principal Engineer, you will take charge of a newly launched greenfield project, leading its technical development from the ground up. This is a rare opportunity to create a modern, scalable system using the latest technology. Your role will involve defining the architecture, making crucial technical decisions, and supporting … apply today or send your CV to . Please note: My client cannot offer sponsorship and can only accept candidates with the right to work in the UK . Principal Software Engineer | Node | TypeScript | APIs | AI | Greenfield | AWS | Microservices | £110,000-£115,000 + 15% Discretionary Bonus + Benefits RSG Plc is acting as an Employment Agency More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

T24 Principal Software Engineer Location: London - Hybrid 3 days a week in the office Duration: Initially 6 months Rate: £market rate The company: Global Technology company delivering digital transformation to a financial services end client. The knowledge, experience and qualifications you need Wide, detailed, and up-to-date experience of the technologies and tools in your area. … Plenty of experience in the full lifecycle of developing software from the first idea to the final execution Mandatory to have L3 code development skills with hands-on experience. TAFJ knowledge and code library management experience. Local code development skill using Info Basic and TAFJ componentized codes. In-depth Technical knowledge of T24 Customization and OFS processing. Linux basics. … Agile delivery experience, especially around discovering requirements and preparing user stories. A good understanding of testing approaches and putting testability at the heart of software design and development. The ability to establish relationships with stakeholders at all levels A good understanding of system integration patterns and associated technologies. Excellent written and spoken English, and communication skills to help manage More ❯

with your recruiter to learn more. Base pay range Direct message the job poster from Fynity Senior Delivery Consultant @ Fynity, placing highly skilled talent within the cloud technology sector ️ Principal Java Software Engineer London (Hybrid – 1–2 days/week onsite) Join a FinTech Powering the Future of Payments Are you an experienced Senior/Principal Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of the world’s largest financial institutions. We’re hiring on behalf of a leading payments consultancy, delivering cutting-edge solutions that integrate …/week in a London office Opportunity to collaborate with major global banks Fast-paced, product-led environment where your voice matters If you're a motivated Senior/Principal Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us. Seniority level Seniority level Mid-Senior level Employment More ❯

Principal Software Engineer, Amazon Cross Border Tech The Amazon Cross Border Core Technology team is seeking a seasoned Principal Engineer to drive the development of innovative technologies that will shape platforms and products impacting a multi-billion-dollar business and enhancing the global customer experience. Our team is focused on building next-generation services that … technologies to support shoppers worldwide. Innovating strategies for global expansion and developing solutions that will sustain the continued rapid growth of this thriving business. Key job responsibilities As a Principal Engineer you will be expected to serve as a technical lead on our most demanding, cross-functional projects. Ensure the quality of architecture and design of systems. Functionally … for the benefit of our region. Collaborate with the business teams to identify opportunities and innovate on behalf of our customers. BASIC QUALIFICATIONS Bachelor's degree 10+ years of software engineering with a proven track record of leading large-scale projects experience Experience in complex software development and knowledge of emerging platforms, Java, operating system principles, and programming More ❯

something much more ambitious: a smart, intuitive app that removes the stress from travel and enhances every step of the journey. To support this mission, theyre looking for a Principal Software Engineer who can lead from the front, shape architectural decisions, and mentor across teams. This is a high-impact, high-autonomy role where your technical vision … React Native (a bonus) Theyre looking for someone who brings deep technical insight, but also pragmatism someone who builds for impact, not complexity. What youll bring: Experience operating at Principal or Staff Engineer level within modern product-led teams Expertise in scalable systems design and cloud architecture (ideally AWS) A track record of shaping engineering direction across teams More ❯

Python Engineer - (Front Office) £800-£900/day (Inside IR35) | 6-month rolling contract | Hybrid (3 days in office) | London A major financial player is hiring a hands-on Python engineer to support one of their front office quant focused investment teams. This is a front-office aligned role within technology, partnering directly with quants and traders to … libraries like pandas and NumPy Experience working in front office environments Familiarity with data pipelines and cloud infrastructure Pragmatic, detail-oriented, and able to work independently Experienced Python-focused Software/Data Engineer with a front office background and experience working with quants? Apply now for a fast turnaround. This is an initial 6-month contract with strong More ❯

Python Engineer - (Front Office) £800-£900/day (Inside IR35) | 6-month rolling contract | Hybrid (3 days in office) | London A major financial player is hiring a hands-on Python engineer to support one of their front office quant focused investment teams. This is a front-office aligned role within technology, partnering directly with quants and traders to … libraries like pandas and NumPy Experience working in front office environments Familiarity with data pipelines and cloud infrastructure Pragmatic, detail-oriented, and able to work independently Experienced Python-focused Software/Data Engineer with a front office background and experience working with quants? Apply now for a fast turnaround. This is an initial 6-month contract with strong More ❯

This role is pivotal in leading the development of user-facing Ground Control Station (GCS) software designed to enable operators to remotely control and monitor autonomous vehicles beyond visual line-of-sight. This involves creating robust, intuitive interfaces using C++, Qt, QML, and JavaScript, alongside incorporating modern UX principles and rigorous testing methodologies. Key Responsibilities: Lead the design and … development of user-facing GCS software for autonomous vehicle monitoring and control. Build and maintain user interface software using C++ and Qt - QML and JavaScript experience would be useful here too. Engage with operators to gather requirements, validate usability, and refine user experience. Develop prototypes and storyboards to capture user requirements and iterate on design concepts. Ensure software robustness through rigorous testing, validation, and performance optimisation. Collaborate with cross-functional teams, including autonomy and hardware engineers, to integrate software solutions. Document and maintain codebases with a focus on readability, scalability, and maintainability. Provide technical leadership and mentorship to junior developers. Job Requirements: Extensive experience in C++ and Qt, ideally including QML and JavaScript. Strong understanding of More ❯

Principal/Senior Java Developer – Full Stack | Leeds (Hybrid) | £70,000 We're working with one of Yorkshire’s most exciting and innovative tech companies – a fast-growing SaaS business that's making waves globally with its cutting-edge BI and AI platform. As their exclusive recruitment partner, we’re now looking for a Full Stack Java Developer to More ❯

Job Title: Principal Software Engineer-Core Java Location: Vaishnavi Tech Park, Bellandur, Bengaluru, KA About Us smartShift is an industry leader in providing automation solutions for the modernization of SAP custom ABAP code. We are a 300 person, Boston-based company with operations in Germany, UK, Nordics, and India, and are experiencing profitable growth of over More ❯

Tech Principal Location: London, United Kingdom Type: Full-Time (hybrid working – home and central office) This is a hands-on leadership role with significant influence across DevOps, architecture design, database integration, team management, and product direction. You will coordinate a rapidly growing engineering team and play a pivotal role in enabling scalable, high-performance solutions that support the firm … frontend (e.g., TypeScript, React) technologies. Strong understanding of modern database technologies and integration patterns. Familiarity with CI/CD pipelines, containerization, and serverless architecture. Professional Experience 6+ years in software engineering, including leadership and architectural responsibilities. Experience managing agile cross-functional teams. Background in SaaS platform development; experience in sustainability or ESG domains is a plus. Soft Skills Strong More ❯

Tech Principal Location: London, United Kingdom Type: Full-Time (hybrid working – home and central office) This is a hands-on leadership role with significant influence across DevOps, architecture design, database integration, team management, and product direction. You will coordinate a rapidly growing engineering team and play a pivotal role in enabling scalable, high-performance solutions that support the firm … frontend (e.g., TypeScript, React) technologies. Strong understanding of modern database technologies and integration patterns. Familiarity with CI/CD pipelines, containerization, and serverless architecture. Professional Experience 6+ years in software engineering, including leadership and architectural responsibilities. Experience managing agile cross-functional teams. Background in SaaS platform development; experience in sustainability or ESG domains is a plus. Soft Skills Strong More ❯

levels to better scout, recruit, teach, and win. WE WANT PEOPLE WHO ARE PASSIONATE ABOUT BUILDING STATE OF THE ART TECHNOLOGY We are looking for a talented and inquisitive Principal Software Engineer - Team Lead whose drive for learning and determination for continuous improvement aligns with our ambitious, fast-growing and transforming company. Based in London, you will … team. We believe that our customers deserve the best platform and we are on a mission to maximise and enhance their performance through delivering a high-quality experience. Our software engineers match this ethos by taking responsibility for constantly improving productivity and development of self and be able to excel in a fast-paced environment with your short project … and designing successful C++ products, with 5+ years as a senior or lead. Strong experience with Qt/QML for multi-platform development Proven experience utilising and advocating for software engineering best practices such as agile software development methodologies, test-driven development, CI/CD, and DevOps Strong understanding object-oriented design skills and of design for scalability More ❯

businesses. Our central services teams work with ventures to help them achieve success; including early stage prototyping and initial product development where this role sits. Your Mission As a Principal Full Stack Engineer at Improbable, you will work with Ventures to help them get to market faster. You will work with their leadership team, to design, prototype and More ❯

Innovation: We develop groundbreaking products and techniques that shape industry norms and enhance audience experiences in sports, entertainment, and news. Job Summary: The Hulu Client Engineering team seeks a Principal Engineer to design and build our next-generation Client Platform, which will power Hulu across various living room devices. This role offers a unique opportunity to set the … long-term technical vision for pushing the boundaries on some of the most advanced 10-foot devices in the market. We seek an engineer skilled in cross-platform coding, experienced with supporting multiple client platforms, and passionate about enhancing UX on our custom in-house runtime for optimal viewer experiences across diverse devices, from set-top boxes to modern More ❯