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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer (Mid-level) - **Company:** Sewell Group - **Location:** Hessle, UK (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, HTML5, Unit Testing, Microsoft Azure, C Sharp (Programming Language), Cascading Style Sheets (CSS), Software Quality, Code Review, Databases, Relational Databases, Cursor (Graphical User Interface Elements), Programming Tools, Entity Framework, PostgreSQL, Microsoft SQL Server, MongoDB, NoSQL, Object-Oriented Software Development, Scrum Methodology, SQL Databases, Systems Integration, TypeScript, Web Application Frameworks, Data Processing, GitHub Copilot, ReactJS, Large Language Models, Prompt Engineering, Backend, Git, Vue.js, AngularJS, Integration Tests, Bicep, Cosmos DB, Front End Software Development, Restful APIs, Terraform, Software Version Control, Docker, Web Api - **Published:** September 9, 2026 - **Apply:** https://www.collegerecruiter.com/job/2842869737-software-engineer-mid-level ## About the Role We are seeking a full stack Software Engineer to play an integral part in the technical delivery of the company's products. The successful candidate will have relevant commercial development experience, have great attention to detail and be a team player. This is the perfect opportunity to work in a growing business and highly motivated team, where the exposure to multiple technologies, unique products and concurrent projects provides a continuous learning and personal development opportunity. If you are a positive, well organised, people person, looking for an opportunity to make your mark on national products, with the backing of a nationally recognised top employer, we'd love to hear from you., As well as exhibiting our company behaviours of being Positive, Professional, Customer Focused, a Team Player and Doing the Right Thing, the successful candidates will have the following, * A minimum of 2 years' commercial experience in full stack software development. * Hands-on experience building and running applications on Microsoft Azure or AWS. * Practical experience using AI coding agents and assistants (e.g. Claude Code, Cursor, GitHub Copilot) as part of day-to-day development. * Solid grounding in software engineering fundamentals: OO design, clean code, version control with Git, and code review * Solid experience building backend services with .NET. * Strong front-end development skills with modern JavaScript frameworks (e.g. Vue typescript, Angular, React). * Strong experience with relational databases (e.g. MS SQL, Postgres SQL) and exposure to NoSQL stores (e.g. Cosmos DB, MongoDB) * Good working knowledge of ORM (e.g. Entity Framework, Dapper) with database (e.g. MS SQL, Postgres) * Experience working with RESTful APIs and integrating front-end and back-end components * Proficient in use of HTML5, CSS/SCSS, and modern JavaScript/TypeScript standards * Experience writing and maintaining unit tests for backend and frontend. * Passion for technology, ongoing learning and client satisfaction * Awareness of the importance of security, data protection and confidentiality * Have good attention to detail and a high level of accuracy, * Experience in data manipulation and analysis * Experience of geo-mapping formats, approaches or tools * Experience with vector databases, embeddings, or building Retrieval-Augmented Generation (RAG) systems * Experience with CI/CD pipelines, infrastructure as code (e.g. Bicep, Terraform), or containerisation (Docker) * Experience building agentic workflows or working with the Model Context Protocol (MCP), tool use, or function calling * Experience integrating LLMs or AI APIs into applications (e.g. OpenAI, Anthropic, Azure OpenAI) - including prompt design and structured outputs * Possess a positive approach to problem solving, with a process driven method to approach design solutions and a keen eye for user experience All candidates will need to be able to demonstrate their technical ability as part of our selection process. Sewell Group and its subsidiary businesses are equal opportunities employers, recruiting within the guidelines of the Equality Act 2010. We are committed to the promotion of diversity and equal opportunity, as an employer and in the delivery of our products and services. As a committed safe employer, an enhanced DBS (criminal record) check will be carried out for the successful candidate of this role. ## Description The Software Engineer will work alongside the Head of Software and the wider development team to deliver a series of software and data projects, to help modernise existing technology platforms and develop new products for new markets., * Design, build, and integrate AI-powered features into our products, including LLM integrations, retrieval pipelines, and agentic workflows. * Build responsive, accessible, user-friendly interfaces using Vue 3 with TypeScript, integrating with backend APIs and modern frontend tooling. * Use AI coding agents and developer tooling effectively to accelerate delivery, while maintaining a high bar for code quality, review, and security. * Collaborate with stakeholders to gather requirements and translate them into technical specifications and solutions. * Develop backend services and APIs using .NET (C#), ensuring scalability, performance, and security. * Integrate front-end and back-end components using RESTful APIs and modern JavaScript frameworks (e.g., Vue with TypeScript). * Model and manage data across MS SQL, Postgres. * Write and maintain unit and integration tests for both front-end and back-end components to ensure code quality. * Participate in Agile development practices including sprint planning, daily stand-ups, and retrospectives. * Ensure adherence to data protection, security standards, and confidentiality requirements in all development activities. ## Related Videos - [Slopquatting, API Keys, Fun with Fonts, Recruiters vs AI and more - The Best of LIVE 2025 - Part 2](https://www.wearedevelopers.com/videos/1765-slopquatting-api-keys-fun-with-fonts-recruiters-vs-ai-and-more-the-best-of-live-2025-part-2) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Can SVG be fast? 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