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Ajay Dhiman

@ajaydhiman1

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I build scalable Node.js backends, APIs, microservices, and payment-integrated platforms.

India

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What I'm looking for

I'm looking to lead backend architecture and delivery for scalable web and mobile products, solving performance, API, database, microservices, and third-party integration challenges.

I've led end-to-end backend development at Segwitz Sdn Bhd, translating business requirements into scalable technical solutions for web and mobile products.

I build Node.js, NestJS, and Express.js services, including REST and GraphQL APIs, microservices, database architectures, and high-availability production systems.

My recent work includes Pineapple's eCommerce and food-ordering microservices, UNGC MYB / RantaiX ESG assessment workflows and analytics, AdIgnis brand-review and subscription features, and Tavis live-session EdTech flows.

Across nine years in backend development, I've delivered payment integrations, reporting, role-based APIs, performance optimizations, production support, and reliable systems using PostgreSQL, MongoDB, MySQL, Redis, AWS, and modern ORMs.

Experience

Work history, roles, and key accomplishments

Current

Lead Backend Developer

Current

Segwitz Sdn Bhd

Jan 2022 - Present (4 years 8 months)

Led end-to-end backend development across multiple products, designing microservices and monolithic architectures, and owning system architecture, API contracts, and database design. Managed concurrent projects, integrated third-party services, and collaborated with stakeholders using Agile Scrum.

NodeJS ExpressJS NestJS Sequelize Prisma Mongoose PostgreSQL MySQL MongoDB REST APIs GraphQL Microservices Redis AWS Agile Scrum Code Review Production Support

Junior Programmer

State Election Commission, Haryana

Apr 2019 - Sep 2021 (2 years 5 months)

Developed web applications using CodeIgniter and MySQL, built REST APIs in Node.js with Express and Sequelize, and created dynamic web pages. Managed multiple projects and performed debugging and testing.

CodeIgniter PHP MySQL NodeJS ExpressJS Sequelize REST APIs Debugging Testing

PHP Developer

Cqlsys Technologies Pvt. Ltd.

Feb 2017 - Mar 2019 (2 years 1 month)

Worked on Core PHP, OOP, and Google Maps API, designed admin panels and web applications, and developed mobile app backends using CakePHP and MySQL. Integrated payment gateways, email services, and SMS gateways.