Junior .NET/React Developer

About the role

We are looking for a motivated Junior .NET/React Developer to join Planet Mark’s technology team in London. You will work on a greenfield sustainability platform, building back‑end services and front‑end components while learning from senior engineers.

Key responsibilities

• Develop back‑end services using .NET Core/.NET 6+ and front‑end features with React.
• Collaborate with senior engineers and the architecture team to follow technical direction.
• Leverage GitHub Copilot for AI‑assisted coding, improving speed and quality.
• Use Azure DevOps for pull requests, code reviews and CI/CD pipeline contributions.
• Assist in designing and maintaining MongoDB schemas and queries.
• Support integration with Microsoft Dynamics CRM and other APIs.
• Write clean, testable code and participate in code reviews.

Required profile

• Good understanding of C# and the .NET framework (commercial, academic or personal project experience).
• Interest or basic experience in building modern web applications with React.
• Eagerness to learn from senior engineers and work in an agile team.
• Enthusiasm for AI‑assisted development tools such as GitHub Copilot.
• Basic knowledge of RESTful APIs and NoSQL databases, preferably MongoDB.
• Strong communication and teamwork skills.

Required skills

• C#
• .NET Core / .NET 6+
• React
• GitHub Copilot
• Azure DevOps
• MongoDB
• RESTful APIs
• Microsoft Dynamics CRM (nice‑to‑have)