1 to 25 of 40 Permanent Software Engineer Jobs in South Wales

critical to support and grow Roku's rapidly expanding ad business. It is the mission of the Ad Engineering Team to build this platform. We are hiring a Senior Software Engineer, Advertising Platform, to be a vital part of this mission. If you bring extensive experience building complex systems, love great technology at scale, enjoy mentoring, jumping in … non-technical audiences Be an evangelist for best practices across all functions - developers, QA, and infrastructure/ops Be an evangelist for platform innovation and reuse Deliver top-quality software in a timely fashion We're excited if you have 10+ years of experience building large scale and low latency distributed systems Command of Java, C++ or Go/ More ❯

several industries. Technical Leadership: Display your technical leadership skills by guiding and collaborating with both onshore and offshore developer team members during client projects, ensuring successful outcomes. As a Software Engineer, you will: Develop traditional and serverless applications and services in an agile and collaborative environment using source control that integrate with data storage services/message buses More ❯

Senior Software Engineer - (UK Remote) Our client, an innovative SaaS company, is looking for a Senior Software Engineer to join their remote team. This is an exciting opportunity to help shape a fully serverless platform built on AWS and Azure, using cutting-edge technologies such as React, TypeScript, and Node.js. You’ll play a key role More ❯

Senior Software Engineer - (UK Remote) Our client, an innovative SaaS company, is looking for a Senior Software Engineer to join their remote team. This is an exciting opportunity to help shape a fully serverless platform built on AWS and Azure, using cutting-edge technologies such as React, TypeScript, and Node.js. You’ll play a key role More ❯

Please Note: Any offer of employment is subject to satisfactory BPSS and SC security clearance which requires 5 years continuous UK address history at the point of application. Accenture is a leading global professional services company, providing a broad range More ❯

Lead Software Engineer Location: Wales - Hybrid - 1 day/week onsite Salary: Up to 65,000 per annum Job Type: Permanent We're hiring a Lead Software Engineer to join an innovative company that's leading the way in network infrastructure monitoring through IoT technology. You'll play a key role in developing and maintaining a … ll not only write high-quality code but also lead a cross-functional team, shape product direction in collaboration with the Head of Digital Products, and contribute to broader software architecture decisions. This is an excellent opportunity for someone who enjoys mentoring others while staying deeply involved in technical problem-solving. Key Responsibilities Lead and mentor a cross-functional … software development team, enhancing processes and supporting team success. Collaborate closely with the Head of Digital Products, Senior Tech Lead, and stakeholders to prioritise product features and ensure successful technical delivery. Design, develop, and maintain high-quality web and mobile applications using C# .NET, React, Azure, Git, and .NET MAUI. Continuously look for ways to improve the reliability, simplicity More ❯

Lead Software Engineer Location: Wales - Hybrid - 1 day/week onsite Salary: Up to £65,000 per annum Job Type: Permanent We're hiring a Lead Software Engineer to join an innovative company that's leading the way in network infrastructure monitoring through IoT technology. You'll play a key role in developing and maintaining a … ll not only write high-quality code but also lead a cross-functional team, shape product direction in collaboration with the Head of Digital Products, and contribute to broader software architecture decisions. This is an excellent opportunity for someone who enjoys mentoring others while staying deeply involved in technical problem-solving. Key Responsibilities Lead and mentor a cross-functional … software development team, enhancing processes and supporting team success. Collaborate closely with the Head of Digital Products, Senior Tech Lead, and stakeholders to prioritise product features and ensure successful technical delivery. Design, develop, and maintain high-quality web and mobile applications using C# .NET, React, Azure, Git, and .NET MAUI. Continuously look for ways to improve the reliability, simplicity More ❯

office a couple of times a month Are you passionate about using technology for social good? I'm helping a mission-driven AI start-up find a Full-Stack Software Engineer, well-versed in C# .Net & React.js, along with exposure to Azure. They're tackling one of the most urgent challenges of the digital age: identifying and mitigating … a team and not be afraid to take initiative. Be eager to learn and continuously improve their skills and processes. What You'll Be Doing As a Full-Stack Software Engineer, you'll work across the product lifecycle, from idea to deployment, contributing to both greenfield projects and the evolution of their core platform. You'll also help More ❯

An exciting opportunity has arisen with our client, for a Full Stack Software Developer - for an exciting cutting edge Technology company in Cardiff. The Opportunity: You will play a critical role in ensuring the continued performance, security, and scalability of the platform, and you'll own the system’s evolution, from bug fixes and feature development to proactively identifying More ❯

X20 Senior Software Engineers Needed – Tech Start Up – Fully Remote - GO, Golang, PHP, GraphQL, GRPC, AWS, API, Microservices, Next.JS, React - Offices based in London but all roles are fully remote Areti has partnered with a rapidly growing tech-led organization who are seeking multiple Software Engineers ranging from junior to senior and looking to grow their team by … a further 20 Software Engineers this year. They are one of the most exciting START-UPS in the UK! As a Software Engineer, you will enjoy working on a variety of interesting and challenging projects and can work with various programming languages. On the other hand, if you are happy working in your niche and the software languages you are most comfortable with then this is fine also. Culture, Fun, and self-development are words often heard in this organization so if you are a software engineer looking for a company with clear career and development opportunities then please reach out today. You will ideally have exposure to as many of these languages, but More ❯

X20 Senior Software Engineers Needed – Tech Start Up – Fully Remote - GO, Golang, PHP, GraphQL, GRPC, AWS, API, Microservices, Next.JS, React - Offices based in London but all roles are fully remote Areti has partnered with a rapidly growing tech-led organization who are seeking multiple Software Engineers ranging from junior to senior and looking to grow their team by … a further 20 Software Engineers this year. They are one of the most exciting START-UPS in the UK! As a Software Engineer, you will enjoy working on a variety of interesting and challenging projects and can work with various programming languages. On the other hand, if you are happy working in your niche and the software languages you are most comfortable with then this is fine also. Culture, Fun, and self-development are words often heard in this organization so if you are a software engineer looking for a company with clear career and development opportunities then please reach out today. You will ideally have exposure to as many of these languages, but More ❯

Contract Software Engineer – C#/.NET | AWS | Terraform | Docker Remote (UK-based) £450-£500 per day (Outside IR35) 6 months Overview: We’re looking for an experienced Contract Software Engineer to join a fast-paced, high-performing engineering team on a fully remote basis. You’ll be working on the design, development, and deployment of scalable More ❯

Contract Software Engineer – C#/.NET | AWS | Terraform | Docker Remote (UK-based) £450-£500 per day (Outside IR35) 6 months Overview: We’re looking for an experienced Contract Software Engineer to join a fast-paced, high-performing engineering team on a fully remote basis. You’ll be working on the design, development, and deployment of scalable More ❯

buy things, but the way we live with more useful and relevant experiences. We believe it's what makes us different from other payment providers. Senior Back End Platform Engineer at Banked We're looking for someone who shares our vision, who identifies with our desire to reinvent payments. You'll participate in the direction of the company and … products, you'll be part of a small team where everyone has a voice. As a Senior Back-End Platform Engineer at Banked you'll be building our core API products,back-end services and SDKs. You'll use Go and its ecosystem to deliver event driven, composable and distributed systems that can be consumed either directly by our … for building internal products for other engineering teams within Banked as well as our merchants/partners and consumers on top of our new payment network Build services and software that's fast, resilient and and meets our challenging scale, integrity and security needs Build event based, REST based or RPC based interfaces that are consumed by engineers on More ❯

buy things, but the way we live with more useful and relevant experiences. We believe it's what makes us different from other payment providers. Senior Back End Platform Engineer at Banked We're looking for someone who shares our vision, who identifies with our desire to reinvent payments. You'll participate in the direction of the company and … products, you'll be part of a small team where everyone has a voice. As a Senior Back-End Platform Engineer at Banked you'll be building our core API products,back-end services and SDKs. You'll use Go and its ecosystem to deliver event driven, composable and distributed systems that can be consumed either directly by our … for building internal products for other engineering teams within Banked as well as our merchants/partners and consumers on top of our new payment network Build services and software that's fast, resilient and and meets our challenging scale, integrity and security needs Build event based, REST based or RPC based interfaces that are consumed by engineers on More ❯

React, Typescript, Node Fast-growing Climate Tech startup. Exciting projects, collaborative mission-driven team. We’re looking for a senior full-stack engineer with React, Typescript skills to join one of the region’s most exciting Climate Tech companies. They’ve built a platform which helps to drive the transition away from fossil fuel heating in people’s homes More ❯

Starling is the UK's first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in More ❯

Description Starling is the UK's first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money More ❯

engineers and digital specialists across 30 countries in North America, EMEA, and APAC. Our teams bring extensive cross-sector knowledge in critical technology areas such as mobility, software services, robotics, simulations, cybersecurity, AI, and data analytics, enabling clients to tackle complex challenges in today’s rapidly evolving markets. With a comprehensive solution portfolio across four service lines Consulting, Solutions … learning and global collaboration, where you can make a meaningful impact through innovative projects that shape the future of technology. About the Role We are seeking a self-motivated Software Engineer to join our agile software development team working on the largest radio telescope in the world. An interest in science, technology and astronomy or radioastronomy is … to providing training and support to help the candidate develop the skills and knowledge required to excel and grow in this role. We believe that a strong foundation in software engineering principles, analytical and problem-solving skills, and a willingness to learn and collaborate are essential for success in this position. Responsibilities Work closely with senior software engineers More ❯

engineers and digital specialists across 30 countries in North America, EMEA, and APAC. Our teams bring extensive cross-sector knowledge in critical technology areas such as mobility, software services, robotics, simulations, cybersecurity, AI, and data analytics, enabling clients to tackle complex challenges in today’s rapidly evolving markets. With a comprehensive solution portfolio across four service lines Consulting, Solutions … learning and global collaboration, where you can make a meaningful impact through innovative projects that shape the future of technology. About the Role We are seeking a self-motivated Software Engineer to join our agile software development team working on the largest radio telescope in the world. An interest in science, technology and astronomy or radioastronomy is … to providing training and support to help the candidate develop the skills and knowledge required to excel and grow in this role. We believe that a strong foundation in software engineering principles, analytical and problem-solving skills, and a willingness to learn and collaborate are essential for success in this position. Responsibilities Work closely with senior software engineers More ❯

Principal Engineer - Healthtech Scaleup What if your next role wasn’t just about code but about legacy? You’ve probably been the go-to person for solving technical chaos more than once. You’ve steadied shaky architectures. Made sense of complex systems. Calmed down product teams with confident decisions made under pressure. But maybe now, you’re looking for … people globally Take a strategic seat at the table, working alongside engineering and product leaders Guide multiple squads through architectural decisions and technical challenges Leave your mark on how software is built — and on who builds it The mission? To make healthcare simpler and more accessible through beautifully designed SaaS products. You’ll help shape the platform and its … decisions Design systems with scale, reliability, and security in mind Champion engineering excellence - from architecture to AI experimentation Who you are: You’re already a Principal, Staff, or Lead Engineer working on complex SaaS platforms. You don’t just understand architecture — you roll up your sleeves and build. You’ve guided squads, influenced strategy, and bridged the gap between More ❯

Principal Engineer - Healthtech Scaleup What if your next role wasn’t just about code but about legacy? You’ve probably been the go-to person for solving technical chaos more than once. You’ve steadied shaky architectures. Made sense of complex systems. Calmed down product teams with confident decisions made under pressure. But maybe now, you’re looking for … people globally Take a strategic seat at the table, working alongside engineering and product leaders Guide multiple squads through architectural decisions and technical challenges Leave your mark on how software is built — and on who builds it The mission? To make healthcare simpler and more accessible through beautifully designed SaaS products. You’ll help shape the platform and its … decisions Design systems with scale, reliability, and security in mind Champion engineering excellence - from architecture to AI experimentation Who you are: You’re already a Principal, Staff, or Lead Engineer working on complex SaaS platforms. You don’t just understand architecture — you roll up your sleeves and build. You’ve guided squads, influenced strategy, and bridged the gap between More ❯

Staff Software Engineer - Data Department: Engineering Employment Type: Full Time Location: Cardiff Description is the UK's first comparison platform for car insurance. We've been helping customers since 2002 by empowering them to make better decisions around insurance and financial services. Our mission is simple: take away the confusion when comparing financial products and services to help … in you Understand, assess and effectively apply modern data architectures (dimensional model, data mesh, data lake). Experience in applying and using data observability methods effectively. Experience in modern software development practices (agile, CI/CD, DevOps, infrastructure as code, observability). Experience applying DORA metrics to Data Products. Experience with Domain driven design, Event driven architecture and Contract More ❯

Software Engineer (C#/Azure) - Must be eligible for SC Clearance Location: Newport - Hybrid 1 day a week onsite minimum - flexible hours Salary: £50,000 - £57,000 (DOE) Holidays: 25 days + 8 bank holidays Benefits: Fantastic benefits and pension Do you love solving complex problems, building modern cloud-based systems and working on services that make a … real difference? Our client is offering a fantastic opportunity for a software development professional who enjoys hands-on coding and contributing to technical strategy within a flexible and supportive work environment. This role involves working with a wide range of technologies and services from secure APIs to scalable cloud applications while gaining valuable experience in agile delivery, DevOps and … re Looking For Strong experience with C# Hands-on experience working with Microsoft Azure Proficiency with Git, Azure DevOps and modern DevOps practices Understanding of APIs, microservices and secure software design Bonus if you have experience working in a regulated or high-security environment If you have a passion for software engineering and an innovative, delivery-focused mindset More ❯

algorithmic tools and intuitive interactive editing components. Esri has a Relocation Assistance Program and can provide support with relocating to the Cardiff area for this position. Responsibilities Build C++ software components that follow industry and team-standard design patterns, development methodologies, and deployment models Develop excellent software for use in field mapping, data collection, sensor networks, street navigation … and more, with the initial focus being on geometry, geometry editors and text related components Collaborate with other software and product engineers throughout the development process Discuss user requirements; design and develop library APIs and implementations Articulate and solve complex problems with design, development, testing and documentation Learn and collaborate in SDK environments (e.g. Kotlin, Qt, .Net, Swift, Flutter … when required, for testing, investigation and prototyping Requirements 2+ years of commercial/academic software development experience, including debugging algorithms, and designing functions and class structures Experience with IDEs, compilers, and development tools for Linux, Windows or MacOS Fluent in, and passionate about, modern C++ (14/17/20) and STL, including smart pointers, optional, variant, lambda expressions More ❯