Agile Coach

Test-Driven Development (TDD) Coach – .NET & React Applications

About the Role

The TDD Coach will be responsible for coaching and enabling development teams to adopt test-driven development practices across backend (.NET) and frontend (React) applications. The role requires hands-on expertise in designing, implementing, and guiding teams on unit testing, mocking, and contract testing frameworks, ensuring code quality, maintainability, and continuous feedback as part of the shift-left quality transformation.

Responsibilities

• Coach and Mentor Developers on TDD principles, unit test design patterns, and refactoring techniques across both backend (.NET) and frontend (React) codebases.
• Establish and enforce TDD discipline within development sprints to ensure code quality and test coverage goals are met before integration.
• Develop and standardize unit testing frameworks and templates using NUnit (for .NET) and Jest (for React), integrating them into the CI/CD pipelines.
• Guide teams on effective mocking strategies using Moq or NSubstitute (.NET) and Axios mocking (React) to isolate dependencies and validate code behavior.
• Enable Contract Testing adoption using suitable frameworks (e.g., Pact, WireMock) to ensure reliable integration between microservices and APIs.
• Collaborate with Solution Architects and DevOps Engineers to embed quality gates and TDD compliance within automated build and deployment workflows.
• Review existing unit and integration test suites, identify technical debt, and provide actionable refactoring recommendations.
• Provide hands-on support to developers during pairing sessions to implement test-first approaches and build a quality-first engineering culture.
• Track TDD adoption metrics (e.g., test coverage, defect leakage, build quality) and present progress to engineering leadership.
• Continuously research and recommend emerging tools and frameworks in the testing ecosystem to enhance productivity and maintainability.

Qualifications

• 10+ years of experience in software engineering or test automation with deep understanding of TDD and unit testing practices.
• Strong command of C#, .NET Core, and React frameworks, including modern application architectures (microservices, RESTful APIs).
• Proven experience in establishing TDD adoption frameworks, conducting workshops, and mentoring developers on test-first design.
• Hands-on experience in contract testing and API mocking for service-level validation.
• Ability to analyze and refactor legacy applications to become testable and maintainable under modern design principles.
• Excellent communication, facilitation, and leadership skills to drive cultural and technical transformation.
• Familiarity with DevSecOps and CI/CD practices, ensuring early and automated validation of code quality.

Required Skills

• Backend (.NET)
• .NET Framework (for legacy apps) and .NET 8 (LTS)
• Language: C#
• API Development: ASP.NET Core Web API
• ORM: Entity Framework Core 8
• NoSQL Databases: MongoDB, Redis (for caching)
• Architecture: Clean Architecture and Microservices
• Dependency Injection: Built-in with .NET Core
• Frontend (UI)
• Frameworks: React (preferred) / Angular / Blazor
• UI Libraries: Material UI
• Testing Frameworks: Jest, React Testing Library
• Testing & Quality Engineering
• Unit Testing: NUnit (for .NET), Jest (for React)
• Contract Testing: Pact, WireMock (preferred)
• Test Management: Azure DevOps Test Plans / Zephyr for Jira
• CI/CD Integration: GitHub Actions, Azure Pipelines, or Jenkins

Preferred Skills

• Experience in agile development environments with in-sprint testing and continuous integration practices.
• Prior exposure to Clean Code, SOLID principles, and refactoring techniques.
• Knowledge of cloud-native architectures (Azure / OCI) and containerization (Docker, Kubernetes).