Sr Backend Developer

2 weeks ago

Kolkata, West Bengal, India RECEX Full time ₹ 12,00,000 - ₹ 36,00,000 per year


Job Description:

Roles and responsibilities

A. Develop, enhance and manage an array of technology applications Such activities will encompass managing a number of in-house applications with the support of an internal technology team:

● 6+ Years of experience
● Assisting in development and enhancement of the websites 
● Responsible for testing and running an error free website
● Management and development of Mobile Apps

● Build campaign landing pages for the various digital marketing campaigns
● Periodic modification of each of the application for performance augmentation
● Build preparedness for future application tests (performance tests) and IT security audits
● Build necessary documentation standards and ensure that the team follows the same

B. Coordination with external technology partners
● Technology team works with multiple external technology partners. The Deputy manager will work closely with them and ensure that the timelines are met
● Periodic calls and action items will be driven by the role with the Tech partners

Eligibility Skills
Must Have
.NET & C# Expertise

• Deep understanding of C# (latest features up to C# 12)

• Strong knowledge of .NET 6/7/8 (ASP.NET Core, .NET API)

• Experience with asynchronous programming (async/await, Task Parallel Library)

• Solid understanding of OOP, SOLID principles, and design patterns

• Strong in exception handling, logging, and debugging

Web Development

• Hands-on experience with ASP.NET Core Web API

• Experience with MVC and Razor pages

• Strong understanding of RESTful API design, versioning, and documentation

• (Swagger/OpenAPI)

• Knowledge of dependency injection, middleware, and filters

Database & ORM

• Strong in SQL Server (stored procedures, indexing, query optimization)

• Experience with Entity Framework Core

• Understanding of database normalization and performance tuning

Architecture & Design

• Experience designing scalable, modular architectures (Clean Architecture, Onion,

• Layered)

• Good understanding of microservices and modular monoliths

• Ability to review and refactor legacy code for performance and maintainability

Testing & Quality

• Experience with unit testing frameworks (xUnit, NUnit, MSTest)

• Knowledge of integration testing and test-driven development (TDD)

DevOps & CI/CD

• Understanding of Git, branching strategies, pull requests

• Experience with CI/CD pipelines

• Security

• Knowledge of authentication/authorization (JWT, OAuth2, OpenID Connect)

• Familiar with API security, and input validation

• Secure configuration of CORS, HTTPS, and sensitive data protection

Soft Skills

• Strong analytical and debugging skills

• Ability to mentor juniors and conduct code reviews

• Clear communication with technical and non-technical stakeholders

• Problem-solving and ownership mindset
Nice to have
Frontend / Client-Side

• Familiar with Angular, or Next Js

• Understanding of TypeScript, HTML5, CSS3
Cloud & Infrastructure

• Familiarity with AWS or GCP
Advanced Concepts

• Message queues (RabbitMQ, Azure Service Bus, Kafka)

• Caching (Redis, MemoryCache)

• Background jobs (Hangfire, Quartz.NET)

• Event-driven architecture
Other Tools & Practices

• CI/CD pipeline optimization

• API Gateway and Load Balancer understanding

• Performance monitoring

• Familiar with GitFlow

• Experience in Agile / Scrum environments


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