Lead.Net Core Developer

We are hiring an experienced Lead Backend .NET Core Developer to join a large-scale modernization initiative for a global banking client. In this role, you will act as a technical lead while remaining hands-on with development. Youll be responsible for building and maintaining secure, scalable RESTful APIs, collaborating with cross-functional teams, mentoring junior developers, and contributing to CI/CD and configuration practices. This is a high-impact role for someone who combines strong backend expertise with leadership maturity and a delivery mindset.

Work Model : Hybrid (3 days/week from office)

Client : US-based global banking client

Notice Period : Immediate to 21 Days

Key Responsibilities :

- Lead backend/API development efforts, including sprint planning, task allocation, and pull request reviews.

- Independently design and develop RESTful APIs using .NET Core and C#, ensuring performance, security, and scalability.

- Collaborate closely with frontend developers to ensure seamless integration and consistent API behavior.

- Write clean, efficient, and testable code while ensuring codebase maintainability and readability.

- Support configuration management through appsettings.json, dependency injection, and environment-based setups.

- Conduct integration testing and write unit tests using xUnit/NUnit and Moq.

- Troubleshoot production issues, optimize queries, and ensure stable releases with Git-based workflows.

- Apply relevant design patterns (Repository, Factory, Dependency Injection) to structure code for extensibility and maintainability.

- Participate in discussions on implementation trade-offs, performance decisions, and error-handling strategies.

Technical Skills & Expertise : :

- Strong experience in .NET Core backend development including routing, middleware configuration, and controller lifecycle

management.

- Expertise in C#, especially async/await, LINQ, generics, and performance-oriented code refactoring.

- Experience designing and securing REST APIs, with understanding of JWT-based authentication, versioning strategies, and error handling patterns.

- Hands-on experience with SQL Server, including complex queries, stored procedures, indexing, null handling, and execution plans.

- Proficient in Entity Framework Core, with knowledge of model creation, migrations, eager/lazy loading, and N+1 query mitigation.

- Daily use of Git for branching, PR management, and resolving merge conflicts. Familiar with GitFlow or trunk-based workflows.

- Ability to manage environment configurations via appsettings.json, secrets handling, and dependency injection.

- Familiarity with frontend integration, including Swagger/OpenAPI documentation, CORS, HTTP verbs, and debugging via browser

dev tools.

- Comfortable writing unit and integration tests using xUnit/NUnit and mocking frameworks like Moq.

- Practical application of system design patterns such as Repository, Factory, and Dependency Injection.

- Team leadership experience-allocating tasks, unblocking issues, mentoring junior developers, and coordinating deliverables.

Nice-to-Have :

- Knowledge of Task Parallel Library (TPL) and basic multithreading constructs like task chaining and parallel loops.

- Comfortable with Tuple handling and deconstruction for cleaner multi-value returns.

- Ability to containerize .NET Core applications using Docker and test locally; orchestration knowledge not mandatory.

- Experience deploying APIs to cloud platforms such as Azure or AWS and working with managed DBs, blob storage, and messaging queues.

- Familiarity with Swagger/OpenAPI for contract verification and API debugging.

- Exposure to Windows Services or background job execution patterns.

- Banking domain familiarity, including transactional systems, audit logs, or reconciliation workflows.

- Experience using or triggering CI/CD pipelines via Azure DevOps or GitHub Actions (pipeline authoring not required).

(ref:hirist.tech)

---