About Once For All Once For All is a high-growth, cloud-based SaaS subscription business helping customers manage supply chain governance, risk, and compliance. We serve 250k customers across the UK in 20 sectors, including construction, transport, retail, hospitality, education, property management, manufacturing, and government. Role Summary Join our rapidly growing Development team (10 Agile SCRUM teams) building and scaling a suite of microservices-based applications on Microsoft Azure. You’ll play a critical role in the design, implementation, and innovation of Once For All’s next-generation Supplier Risk Assessment platform, ensuring scalability, security, and reliability. Key Responsibilities Design, build, and maintain cloud-native microservices and APIs using C#, .NET, and SQL Server. Lead the design and implementation of high-availability, high-scalability systems hosted on Azure. Collaborate with product owners and stakeholders to translate requirements into technical solutions. Champion clean code, object-oriented design, and software engineering best practices. Contribute to a DevOps culture: CI/CD pipelines, Git workflows, Docker, and Kubernetes. Mentor and support developers through code reviews and technical guidance. Stay ahead of emerging technologies (Cloud, Open Source, DevOps, API economy, Big Data) and bring innovation to the team. Required Skills & Experience Strong C# and SQL Server expertise with proven track record of delivering robust applications. Solid experience with REST APIs and modern API design. Proven background in scalable system design and high-availability architectures. Hands-on experience with Microsoft Azure and cloud-based infrastructure. Strong problem-solving and analytical skills with the ability to deliver under Agile methodologies. Deep knowledge of object-oriented programming, microservices, and message bus technologies. Familiarity with DevOps practices: Git, build pipelines, Docker, Kubernetes. 5 years commercial development experience (Computer Science/Engineering degree preferred). What We Offer Health & Wellbeing: Private Medical Insurance or wellness fund, 24/7 Employee Assistance Programme. Financial Benefits: Pension, Life Assurance (3x salary). Time Off: 25 days holiday 8 bank holidays, holiday purchase scheme (5 days), paid & unpaid volunteering days. Growth & Development: Ongoing CPD, team offsites, and company events. Everyday Perks: Specsavers eye-care voucher, free tea/coffee/fruit in Basingstoke office. Tech Stack You’ll Work With C#, .NET, SQL Server, REST APIs, Microsoft Azure, Docker, Kubernetes, Git, CI/CD, Microservices, Message Bus