Junior Developer jobs in United Kingdom

The Systems Developer will play a critical role in designing, building, and maintaining robust software solutions to support the technology needs of an energy and natural resources organisation. This position, based in Leicester, requires technical expertise to ensure seamless system integration and performance.

This role is with an ambitious, innovative organisation in the exciting Energy sector. The company is passionate about harnessing technology to drive efficiency and innovation across all of its business.

• Understand business processes and design solutions that improve efficiency, reduce manual effort, and create measurable impact.
• Build and maintain web applications using ASP.NET (C#) backend and React/Next.js frontend.
• Connect core systems and external services (e.g., HubSpot, Dataverse) through APIs and low/no-code tools such as Zapier, Make, or Power Automate.
• Deploy, monitor, and optimise solutions on Azure (App Services, Functions, Storage, Authentication).
• Explore opportunities to apply AI agents and intelligent automation to accelerate business workflows beyond CRUD operations.
• Work closely with business stakeholders to capture requirements and translate them into pragmatic technical solutions.
• Apply best practices in testing, security, scalability, and maintainability.
• Participate in code reviews, knowledge sharing, and refining team processes.
• Act as the face of Development, working and collaborating with technical and non-technical colleagues to drive the business forward.

Essential

• Commutable to Leicester and keen to be present in the office.
• Proven experience in ASP.NET (C#) backend and React/Next.js frontend development.
• Strong understanding of business process improvement and ability to think beyond "just building features".
• Experience with Azure cloud services.
• Familiarity with API design, RESTful services, JSON, and data integration patterns.
• Ability to flex across front-end, middleware, backend, and low/no-code development.
• Problem-solving mindset: capable of balancing robust engineering with pragmatic business outcomes.
• Good communication skills to work directly with stakeholders, sometimes in-person.

Desirable

• Experience with HubSpot or other CRM systems.
• Familiar with Dynamics 365 or similar enterprise platforms.
• Experience with AI/ML solutions, particularly in automation and workflow optimisation.
• Knowledge of AWS cloud services.
• DevOps (CI/CD, GitHub Actions, Azure DevOps).
• Database Experience (SQL Server)

• Salary up to 70,000, depending on experience.
• 23 days of annual leave plus bank holidays.
• Up to 4 weeks of sick pay and up to 5 days of compassionate leave.
• Access to a pension scheme with salary sacrifice options.
• Employee benefits hub, including Cycle to Work and Employee Assistance Programme.