Company Description Version 1 has celebrated 30 years in business and continues to be trusted by global brands to deliver technology and transformation solutions that drive customer success. Our deep expertise enables our customers to navigate the rapidly evolving technology landscape. We foster strong partnerships with global technology leaders including Microsoft, AWS, Oracle, Red Hat, OutSystems, Snowflake, ensuring that our customers are provided with the highest quality solutions and services.  We’re an award-winning employer reflecting how our employees are at the very heart of what we do: - UK & Ireland's premier AWS, Microsoft & Oracle partner - 3300+ strong, €350/£300m revenue business - 10+ years as a Great Place to Work in Ireland & UK - Best Workplace for Women in the UK & Ireland by GPTW - Best Workplace for Wellbeing in the UK by GPTW We’re a core values driven company, we hire people who share our values, and we reward those who display and foster them, it’s deeply embedded within our DNA. Invest in us and we’ll invest in you!. Job Description Version 1 is seeking Senior Full Stack Developers with strong expertise in C#.NET and ReactJS technologies. The ideal candidate should have a solid foundation in C#, ReactJS, HTML, CSS, and SQL, with proven experience building scalable, secure, and high-performing applications. A proactive, self-motivated individual with excellent problem-solving, debugging, and communication skills will thrive in this role. Key Responsibilities - Design, develop, and maintain software applications using .NET Core / .NET 6+ and ReactJS. - Build and optimize responsive, high-performance UI components using ReactJS with Hooks, Context API, and functional components etc. - Implement state management solutions (e.g., Redux, or React Query) for complex applications. - Apply design principles and deliver scalable, maintainable, and secure solutions. - Perform low-level design and create technical and functional specifications. - Prepare architectural diagrams, workflow diagrams, prototypes using tools like Visio, Draw.io, Figma, etc. - Integrate front-end React applications with RESTful APIs and Web APIs built on .NET Core. - Implement form handling, validation, routing, and component-based architecture for SPAs. - Ensure cross-browser compatibility, responsive design, accessibility (WCAG/ARIA), and UI performance optimizations. - Write and maintain unit and integration tests for React components using Jest, React Testing Library, or Cypress. - Work with ORM frameworks such as Entity Framework Core and Dapper. - Develop complex Stored Procedures, Triggers, and Views in SQL Server / Azure SQL. - Use Azure DevOps and Git for CI/CD pipelines, source control, and efficient branching/merging strategies. - Participate in Agile ceremonies (sprint planning, daily standups, retrospectives) to ensure successful delivery. - Conduct peer code reviews and secure code reviews, applying SAST/DAST tools to ensure application security. - Manage deployments in Azure environments and perform application performance tuning. - Provide guidance, mentorship, and support to junior developers. Qualifications Required Skills - Bachelor’s degree in Engineering or related field, with 7+ years of professional experience. - Proven experience developing web applications with ASP.NET Core, C#, Web API, Razor Pages, HTML, JavaScript, jQuery, and CSS. - Strong hands-on experience building enterprise-scale ReactJS applications. - In-depth knowledge of React Hooks, Context API, component lifecycle, virtual DOM, JSX, and event handling. - Strong experience with state management tools such as Redux, Redux Toolkit, or React Query. - Proficiency in unit and integration testing of React components (Jest, React Testing Library, Cypress). - Familiarity with SPA architecture, modular component design, and micro frontends. - Knowledge of Webpack, Babel, npm/yarn, and other build tools. - Strong SQL expertise with experience in Stored Procedures, Triggers, and Views. - Hands-on experience with Azure App Services, Azure Functions, Azure Container Apps, cloud deployments, and basic cloud administration. - Experience preparing low-level designs, workflow diagrams, and documentation. - Excellent communication skills with the ability to articulate technical concepts to diverse stakeholders. - Flexibility to work in UK shift hours to collaborate with international teams and clients. Desired Skills - Microsoft Azure Developer Associate certification. - Exposure to other front-end frameworks such as Angular or Blazor. Additional Information Why Version 1?  At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability. - Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits - Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme - Flexible/remote working, Version 1 is tremendously understanding of life events and people’s individual circumstances and offer flexibility to help achieve a healthy work life balance - Financial Wellbeing initiatives including; Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Discount scheme - Employee Wellbeing schemes including Gym Discounts, Bike to Work, Fitness classes, Mindfulness Workshops, Employee Assistance Programme and much more. Generous holiday allowance, enhanced maternity/paternity leave, marriage/civil partnership leave and special leave policies - Educational assistance, incentivised certifications, and accreditations, including AWS, Microsoft, Oracle, and Red Hat - Reward schemes including Version 1’s Annual Excellence Awards & ‘Call-Out’ platform. - Environment, Social and Community First initiatives allow you to get involved in local fundraising and development opportunities as part of fostering our diversity, inclusion and belonging schemes. And many more exciting benefits… drop us a note to find out more.   Version 1 is an equal opportunities employer. We are committed to building a diverse, inclusive and respectful workplace where everyone feels valued and able to thrive. We welcome applications from people of all backgrounds, identities and lived experiences, and we value the different perspectives people bring. We want every candidate to have a positive and accessible recruitment experience. If you need reasonable adjustments at any stage of the process, please contact [email protected] at Version 1. We will consider all requests carefully, respectfully and confidentially. Video links: https://www.youtube.com/watch?v=F_d3ELTH5zo - Department: Digital, Data and Cloud