1 to 25 of 26 Principal Software Engineer Jobs in Berkshire

Social network you want to login/join with: We’re looking for a Senior or Principal Software Engineer to join a growing and dedicated Software function who are pushing to be the best at what they deliver. Are you experienced with being a hands on … Senior Software Engineer who can provide and contextualise the why and the how to other members of your team? This role could be for you! The Principal Software Engineer is a key member of an Agile squad, who is able to put together highly scalable … experience SQL Benefits Package 7% Annual Bonus Yearly L&D Budget specific to you Private Healthcare with family cover Opportunities to progress into management Principal Software Engineer, Senior Software Engineer, Lead Software Engineer, C#, .NET, OOP, SOLID, RabbitMQ #J-18808-Ljbffr More ❯

Social network you want to login/join with: Principal Software Engineer (Payments), reading col-narrow-left Client: Ocho Location: reading, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: Principal Software Engineer II Are you a senior engineer who wants to stay hands-on while shaping the technical direction of a growing team? Do you enjoy designing and delivering complex systems that have real impact? If so, read on. We’re building the next generation of … Growth mindset – Encouraging innovation, skill development, and cross-team learning. Solving real problems – Focused on delivering value through practical, scalable solutions. The Role: As Principal Software Engineer II, you’ll lead technical direction across a range of platform capabilities (e.g., APIs, billing, settlement). You’ll be More ❯

Social network you want to login/join with: Principal Software Engineer (Payments), slough col-narrow-left Client: Ocho Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: Principal Software Engineer II Are you a senior engineer who wants to stay hands-on while shaping the technical direction of a growing team? Do you enjoy designing and delivering complex systems that have real impact? If so, read on. We’re building the next generation of … Growth mindset – Encouraging innovation, skill development, and cross-team learning. Solving real problems – Focused on delivering value through practical, scalable solutions. The Role: As Principal Software Engineer II, you’ll lead technical direction across a range of platform capabilities (e.g., APIs, billing, settlement). You’ll be More ❯

Social network you want to login/join with: Principal Software Engineer (React, Node, AWS), Slough Client: Oliver Bernard Location: Slough, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 3 Posted: 31.05.2025 Expiry Date: 15.07.2025 Job Description: Principal Software Engineer (TypeScript) Location: 3 days p/week in London Join a startup that recently raised Series A funding as a Principal Engineer. You'll be part of a passionate technology team focused on innovation, collaboration, and excellent customer service, embracing new ideas and technologies. As a Principal Engineer, you'll work alongside experienced full-stack product engineers, using TypeScript, React, Material UI, Postgres, and AWS Services, taking end-to-end ownership of your projects. Requirements: Full-stack TypeScript and AWS experience, ideally 6+ years commercially. Enjoy working in a fast-paced startup environment. Focus on More ❯

Principal Software Engineer – London/Winchester (Hybrid Remote) - £83k plus 10% Bonus 10% Bonus | 6% Pension | Private Medical | Flexible Hours | 2dpw in office | Enterprise-grade Projects Ada Meher is currently resourcing for a Principal Software Engineer to join the one of the country’s … solutions and see great reward from the standard of the work they produce for their clients. We are expecting a strong response to this Principal Software Engineer role, so please apply with or send a CV to matthew.coney@adameher.com ASAP to be considered More ❯

Principal Software Engineer – Cards & Credit (Python, Java, Clojure, AWS) 💰 Up to £135,000 + bonus (15-22%) + annual equity 🖥️ Python, Distributed Systems, High-Scale Architecture 📍 London, hybrid working (2 days/week) 🤝 Leading business lending platform I'm partnered with one of the UK’s most … new product line which has become the company’s highest-growth area, with its own dedicated leadership and roadmap. They’re now hiring a Principal Engineer to become the technical lead across two core engineering teams working in the card and credit space. This is a critical hands … their London office (no fixed days) Be part of a high-ownership role with real scope to shape the success of a growing product Principal Software Engineer – Cards & Credit (Python, Java, Clojure, AWS More ❯

Principal Software Engineer London (Bank – Three days a week in the office) £90k-£100k We’ve partnered with a global insurance company as they continue to grow their Engineering team – they’re seeking a Principal Software Engineer to lead & drive innovation & quality across the … software development lifecycle. The company are working on several new products, so an opportunity to work on multiple greenfield projects. This is a hands-on position with the expectation of technical leadership & excellence, where you will take on a leading role in mentoring, architecture & software design. You’ll … become a subject matter expert & will champion software development best practices across the wider business. It’s essential to have had a background that has included leadership previously. The right candidate will need extensive experience with the below: Microsoft Stack – C#, .NET Azure Cloud experience CI/CD Pipelines More ❯

Social network you want to login/join with: Principal Java Software Engineer, slough col-narrow-left Client: Fynity Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 3 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: 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 … 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. #J-18808-Ljbffr More ❯

Our Principal Software Engineers are responsible for leading and delivering strategically significant, complex client engagements across our portfolio of clients. We believe that great delivery stems from a thorough understanding of our clients and their needs, strong discipline skills and subject matter expertise, excellent leadership and a clear … vision of lasting and effective change in a public sector environment. We expect our Principal Software Engineers to bring all of that and enthuse our delivery teams with the same passion. The successful candidate will lead the Software Engineering aspects of our client engagements while overseeing the … wider delivery within the account (or industry) when appropriate. In addition, our Principal Software Engineers are responsible for engaging with our clients to understand their challenges and build lasting, trusted advisor relationships. They will also oversee multiple, concurrent client deliveries to help ensure quality and drive the sharing More ❯

components for a wide range of industries, leveraging advanced 3D printing techniques. As they continue to grow, they are looking to bring on a Principal Software Engineer to lead the development of their state-of-the-art metal printing systems. As a Principal Software Engineer, you will play a pivotal role in the development of embedded software for the company's next-generation 3D metal printing machines. These machines are designed to deliver high-volume, precision printing for large-scale industrial parts, with an emphasis on sustainability and green manufacturing. You will be … responsible for architecting and implementing software solutions that integrate motion control systems, real-time operating systems (RTOS), and other critical embedded components to ensure the efficient and reliable performance of the printing systems. In this senior role, you will lead and mentor a team of junior engineers, providing guidance More ❯

Role Title: Principal Software Engineer (JavaScript) Location: Remote (occasional onsite near Reading – likely 3-4 times per month TBC) Engagement: Statement of Work (Outside IR35) Rate: Up to £550 per day Overview: We are looking for a highly skilled Principal Software Engineer to contribute … focused on modernising and engineering high-quality digital products for a data-driven platform. This is a hands-on leadership role ideal for an engineer who thrives in delivering complex, enterprise-grade solutions to high standards. You will be working with a multi-disciplinary product team to build scalable … build full-stack solutions with an emphasis on quality, performance, and scalability. Apply cloud-native design patterns to build distributed systems aligned with modern software architecture principles. Implement CI/CD, automated testing, and engineering best practices across the SDLC. Ensure compliance with security, privacy, and data protection standards. More ❯

Role Title: Principal Software Engineer (JavaScript) Location: Remote (occasional onsite near Reading – likely 3-4 times per month TBC) Engagement: Statement of Work (Outside IR35) Rate: Up to £550 per day Overview: We are looking for a highly skilled Principal Software Engineer to contribute … focused on modernising and engineering high-quality digital products for a data-driven platform. This is a hands-on leadership role ideal for an engineer who thrives in delivering complex, enterprise-grade solutions to high standards. You will be working with a multi-disciplinary product team to build scalable … build full-stack solutions with an emphasis on quality, performance, and scalability. Apply cloud-native design patterns to build distributed systems aligned with modern software architecture principles. Implement CI/CD, automated testing, and engineering best practices across the SDLC. Ensure compliance with security, privacy, and data protection standards. More ❯

Role Title: Principal Software Engineer (JavaScript) Location: Remote (occasional onsite near Reading – likely 3-4 times per month TBC) Engagement: Statement of Work (Outside IR35) Rate: Up to £550 per day Overview: We are looking for a highly skilled Principal Software Engineer to contribute … focused on modernising and engineering high-quality digital products for a data-driven platform. This is a hands-on leadership role ideal for an engineer who thrives in delivering complex, enterprise-grade solutions to high standards. You will be working with a multi-disciplinary product team to build scalable … build full-stack solutions with an emphasis on quality, performance, and scalability. Apply cloud-native design patterns to build distributed systems aligned with modern software architecture principles. Implement CI/CD, automated testing, and engineering best practices across the SDLC. Ensure compliance with security, privacy, and data protection standards. More ❯

Principal Software Engineer - C, C++, Python Location: Reading, United Kingdom Client: Spectrum IT Recruitment Job Category: Other EU work permit required: Yes Job Views: 2 Posted: 06.06.2025 Expiry Date: 21.07.2025 Job Description: Join a pioneering company in cutting-edge radiation detection solutions, where your work will protect … and empower communities worldwide. As a Principal Software Engineer, you will work on high-stakes projects, collaborate with an experienced team, and use your expertise in C, C++, and Python to drive product excellence. Responsibilities: Design and develop software solutions for radiation detection systems. Collaborate with More ❯

Principal Software Engineer - C, C++, Python Location: Slough, United Kingdom Client: Spectrum IT Recruitment Job Category: Other EU work permit required: Yes Posted: 06.06.2025 Expiry Date: 21.07.2025 Job Description We are seeking a Principal Software Engineer with expertise in C, C++, and Python to … in radiation detection solutions. This role offers an opportunity to work on impactful projects that protect and empower communities worldwide. Responsibilities Design and develop software solutions in C, C++, and Python. Collaborate with cross-functional teams to deliver high-quality products. Contribute to the development of radiation detection technologies More ❯

Principal Embedded Software Engineer £70-90k Reading Remote, with occasional visits My client is an elite company providing media content solutions. Due to sustained success, they are expanding their R&D team. They're seeking a Principal Software Engineer with a strong background … in embedded systems and a passion for solving complex technical challenges in a high-performance environment. Key Responsibilities: Lead software architecture across the full stack, from UI and services to kernel-level development. Collaborate with hardware and FPGA teams to deliver tightly integrated, high-speed embedded systems. Mentor engineers … drive best practices, and contribute to recruitment and technical leadership. Essential Experience: 10+ years in C++ software development in a Linux environment Experience building complex software for custom hardware, including device interfacing. Strong foundation in data structures, algorithms, and object-oriented design. Desirable Skills: Exposure to Qt, Yocto More ❯

Principal Embedded Software Engineer | £70-90k | Reading | Remote, with occasional visits My client is an elite company providing media content solutions. Due to sustained success, they are expanding their R&D team. They're seeking a Principal Software Engineer with a strong background … in embedded systems and a passion for solving complex technical challenges in a high-performance environment. Key Responsibilities: Lead software architecture across the full stack, from UI and services to kernel-level development. Collaborate with hardware and FPGA teams to deliver tightly integrated, high-speed embedded systems. Mentor engineers … drive best practices, and contribute to recruitment and technical leadership. Essential Experience: 10+ years in C++ software development in a Linux environment Experience building complex software for custom hardware, including device interfacing. Strong foundation in data structures, algorithms, and object-oriented design. Desirable Skills: Exposure to Qt, Yocto More ❯

Principal Software Engineer – London/Winchester (Hybrid Remote) - £83k plus 10% Bonus Benefits: 10% Bonus | 6% Pension | Private Medical | Flexible Hours | 2 days per week in office | Enterprise-grade Projects Ada Meher is recruiting for a Principal Software Engineer to join a leading broadcasting More ❯

We’re hiring: Principal Software Engineer @ IRIS Software! 🚀 📍 UK-based | 💻 Hybrid working | 🧠 High-impact role We’re growing fast and looking for an inspiring Principal Engineer to join our thriving Engineering team. This isn’t just a technical role — it’s your chance to … large-scale systems 💡 An innovative mindset, excited by new tools and new ways of thinking 🎉 Why join IRIS? We’re more than just a software company — we’re a community of curious minds , supportive leaders, and bold thinkers. We care about our people, and we’re building a tech More ❯

We’re hiring: Principal Software Engineer @ IRIS Software! UK-based | Hybrid working | High-impact role We’re growing fast and looking for an inspiring Principal Engineer to join our thriving Engineering team. This isn’t just a technical role — it’s your chance to … large-scale systems An innovative mindset, excited by new tools and new ways of thinking Why join IRIS? We’re more than just a software company — we’re a community of curious minds , supportive leaders, and bold thinkers. We care about our people, and we’re building a tech More ❯

Job Title: Principal Software Engineer X2 Entity: Aventum Department: Technology Location: London/Hybrid Who We Are Since its inception, Aventum Group has sought a different approach to insurance. We are on a mission to be the ‘most inspiring specialty (re)insurance group in the world’. … goals and ambitions. Role Summary You will assume a pivotal role, leveraging your extensive expertise to drive innovation and excellence across all facets of software development. In addition to spearheading the design, development, and maintenance of sophisticated software solutions, you will take a lead role in mentorship, software design and architecture, and championing secure software development practices throughout the software development lifecycle. Drawing from your wealth of experience with multiple programming languages, advanced software development methodologies, and industry best practices, you will serve as a beacon of knowledge and inspiration, guiding and mentoring both More ❯

Principal Software Engineer with strong problem solving skills and deep technical expertise is required to join high calibre Product Engineering Team and lead the end-to-end design, implementation and delivery of future architecture for highly scalable, low latency systems within the Banking sector. Key Skills/… Experience: Clear understanding of data structures, algorithms, software design, design patterns & core programming concepts. Strong Computer Science skills including hands-on expertise in Java, Python, Apache Kafka, SQL, Databases, etc Cloud native solutions and public cloud platforms – GCP preferred Microservices, Containers (Docker, Kubernetes) Designing, building and supporting distributed systems … Preferred Skills/Experience: Master's degree or PhD in computer science or related field Certification in GCP “Cloud Architect”, “Cloud Developer”, “Professional Data Engineer”, or similar Certification in Apache Kafka (CCDAK) Team-leading Main Responsibilities: Lead end-to-end design, implementation and delivery of future architecture for highly More ❯

As a Principal Software Engineer, you will lead a full-stack engineering squad within the Audit Technology team. You will play a critical role in architecting, developing, and scaling cloud-native platforms and applications that embed automation, analytics, and intelligence directly into audit workflows. You will be … stack engineers. Provide architectural direction, set development standards, and guide the team in delivering high-quality, scalable software. Solution Architecture: Design end-to-end software solutions across the stack, from front-end interfaces to backend services and cloud infrastructure, ensuring they are robust, secure, and scalable. Hands-On Development … maintainable technical solutions. Governance & Compliance: Ensure adherence to secure development practices, regulatory requirements, and engineering standards. Innovation & Best Practice: Stay ahead of trends in software engineering, AI engineering, and cloud development. Contribute to reusable components, promote engineering excellence, and share best practices across the team. Requirements Degree in Computer More ❯

Social network you want to login/join with: Lead Principal Software Engineer, slough col-narrow-left Client: Harrington Starr Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 3 Posted: 10.06.2025 Expiry Date: 25.07.2025 col-wide Job Description … Principal Front Office Developer - Trade Capture, Pricing, Risk, and STP You will be: Accountable for the successful software delivery from inception to deployment for the complete Front Office Derivatives Technology Stack Deliver key strategic business goals by identifying systems changes that support revenue generation and regulatory reporting for … and ensure that the Front Office desks are fully supported with a global system architecture. Responsibilities: Design, develop, and maintain high-quality Java-based software components for trade capture, pricing, risk calculation, payments, settlements, and regulatory reporting Develop scalable and accurate solutions to meet the evolving needs of our More ❯

still sees itself as a 25 year old startup that needs to move quickly to cater for rapidly changing customer habits and needs. As Principal Software Engineer for our Ski business, you’ll take full ownership of the Ski tech platform—ensuring its stable, scalable, and ready More ❯