Senior Developer, .NET/React

Alcumus

Senior Developer position to shape product architecture and develop solutions in .NET and React at a sustainability certification organization. Collaborate on greenfield projects and utilize AI tools for progressive engineering.

Posted 7/7/2026full-timeLondon • 🇬🇧 United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Full Stack Development with a focus on .NET Core and React, while leveraging AI tools like GitHub Copilot to enhance productivity and code quality. Proficient in DevOps practices using Azure DevOps and experienced in database management with MongoDB.

Highest-signal resume keywords

Full Stack DevelopmentC# ProgrammingReact Application DevelopmentAzure DevOpsMongoDB Management

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Applicant Tracking System Keywords

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Hard Skills

C# ProgrammingFull Stack DevelopmentReact Application DevelopmentAI-Assisted EngineeringDevOps PracticesCI/CD PipelinesDatabase ManagementRESTful API DevelopmentGitHub CopilotAgile Methodologies

Soft Skills

CollaborationCode ReviewTechnical Direction

Tools & Technologies

Azure DevOpsGitHub CopilotMongoDBMicrosoft Dynamics CRM

Industry Keywords

Greenfield ProjectsArchitectural StandardsComponent-Based Web ApplicationsNoSQL DatabasesCode Quality Governance

Tech Stack

Tools & technologies

AzureMongoDB.NETNoSQLReact

About the role

Key responsibilities & impact

Technical Direction & Architecture Collaboration: Work closely with the central architecture team to shape the technical direction of the product, contributing to architectural decisions and ensuring alignment with enterprise standards. Play a key role in delivering a greenfield project
Full Stack Development: Build scalable back-end services using .NET Core and responsive front-end components using React.
AI-Assisted Engineering (Core Expectation): Champion the use of GitHub Copilot as a fundamental part of day-to-day development. Use AI tooling to accelerate delivery, improve code quality, and influence team practices around effective prompting and AI-assisted workflows.
DevOps Practice: Actively utilise Azure DevOps, managing repository pull requests and configuring CI/CD build and release pipelines.
Database Management: Design, optimise, and maintain efficient document schemas and queries in MongoDB.
Integration Support: Integrate with Microsoft Dynamics CRM to streamline business workflows and data synchronisation.
Code Quality & Governance: Write clean, testable code and participate in peer code reviews, ensuring all AI-assisted output meets strict security and architectural standards.

Requirements

What you’ll need

Experience working with architecture functions to influence and implement technical direction, particularly within greenfield or early-stage products.
Strong, hands-on experience using GitHub Copilot (or equivalent) as a core part of development, with the ability to demonstrate how AI can materially improve productivity and code quality.
Strong proficiency in C# and the .NET framework (.NET Core / .NET 6+).
Proven professional experience building modern, component-based web applications with React.
Solid understanding of Azure DevOps (Repos and Pipelines) for agile task tracking and code management.
Hands-on experience working with MongoDB or other NoSQL databases.
Experience building and consuming web services and RESTful APIs.

Benefits

Comp & perks

Enhanced Parental Leave
Generous annual leave, with the option to buy and sell additional days
Healthcare Plan
Annual Giving Day – an extra day to give back to yourself or your community
Cycle-to-work Scheme
Electric Vehicle Scheme
Pension scheme with employer contributions
Life Assurance – 3X base salary
Rewards Program – access to discounts and cashback
LinkedIn Learning License for upskilling & development