Rohit Kadiyan

Project: Payroll and TDS System.

• Developed and implemented payroll features where salary calculation is directly linked to attendance and dynamic components.
• Designed and integrated Tax Deduction at Source (TDS) functionality to ensure accurate tax calculations per government guidelines.
• Led a small development team, overseeing task distribution and project timelines.
• Collaborated with product and design teams to ensure the system aligned with user needs and business goals.
• Conducted database modelling and migration, successfully transferring active user data to the newly optimized database structure.

Project: Attendance Management.

• Developed multiple methods for marking attendance, including manual entry, selfie-based verification, location tracking, and facial biometric recognition.
• Integrated the system with hardware devices from multiple vendors, ensuring smooth data management and synchronization.
• Implemented robust consistency and concurrency controls to handle simultaneous user interactions and ensure accurate attendance records.

Project: Payments Service.

• Designed and implemented an event-driven payment system as a new microservice to handle staff salary payments efficiently.
• Built a dynamic and extensible payment system, enabling easy plug-and-play integration with any payment gateway.
• Integrated with multiple banks and supported various payment modes for flexibility in processing payments.
• Developed robust mechanisms for handling payment failures, processing refunds, and implementing cashback algorithms.

Project: Subscription Management.

• Designed and implemented a flexible subscription architecture to support multiple plans and manage user subscriptions efficiently.
• Developed internal systems to handle subscription lifecycle management and issue tracking.
• Led the codebase migration from Node.js to NestJS, leveraging its support for dependency injection and the benefits of a more opinionated framework for improved scalability and maintainability.
• Integrated with various payment gateways to manage subscription payments, ensuring seamless transactions and data security.

Tools: NestJS, Node.js, JavaScript, TypeScript, Java, PostgreSQL, TypeORM, Sequelize, RabbitMQ, Redis, AWS Services, GitHub, JIRA, Datadog, and Docker.

• Designed and developed a system architecture for a scalable suite of travel services.
• Collaborated with vendors such as Yappay, Hyperverge, Exotel, etc. For system integrations.
• Architected event-driven microservices and test-driven development to deliver optimal functionality.

Tools: NestJS, NodeJs, Javascript, Typescript, PostgreSQL, TypeORM, Sequelize, RabbitMQ, Redis, AWS Services, GitHub, JIRA, Docker, Kubernetes.

• Led the development of a document management application, automating and simplifying the verification process.
• Developed the 'Direct Selling Agent' platform.
• Built a 'Lead Acquisition' platform for a hackathon that progressed to production.

Tools: Java, Spring Boot, PostgreSQL, Hibernate ORM, GitHub, Jira.

• Migrated the 'Direct Debit' payment service from a single-node server to a multi-node cluster.
• Created scheduled jobs to generate metrics for monitoring and alerting purposes.

Tools: Java, AWS Services (SQS, SNS, etc.).