Backend · Systems · India

Abhishek Tyagi

Associate Tech Lead | Backend Developer | Software Architect

From monoliths to microservices, payments to healthcare—I design backends that scale and ship without breaking.

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What I've shipped

From contributing to leading and designing—here's what I've shipped.

Fintech & Digital Wallet

Toki – Super App (Mongolia)

Toki is a fintech super app that enables users to perform digital financial activities such as peer-to-peer payments, merchant payments, in-store QR transactions, mobile recharge, and wallet-based financial services within a unified ecosystem.

Node.jsExpressAWS S3AWS RekognitionAWS Secret ManagerAWS API GatewayKafkaMongoDBScyllaDBMicroservicesREST APIgRPCAWS LambdaSocket
PropTech

Henry Exchange – Real Estate Investment Platform (US)

A digital investment platform enabling users to invest in real estate through fractional property ownership, allowing investors to buy, sell, and trade property shares in a secure marketplace.

Node.jsExpressAWS S3AWS Secret ManagerAWS API GatewayKafkaMongoDBPostgreSQLMicroservicesREST APIgRPCSocket
HealthTech

Thrizer – Healthcare Appointment Platform (US)

A healthcare platform that connects patients with doctors by enabling appointment booking, telehealth consultations, and secure management of clinical scheduling.

Node.jsExpressAWS S3RabbitMQMongoDBMonolithicREST APIgRPCGoogle Meet
Fintech

Amex Sadad – Payment Integration (Middle East)

Developed wrapper APIs for the SADAD electronic payment system, enabling seamless integration between merchant platforms and American Express payment infrastructure.

MicroservicesNestJSOracle DBREST APIgRPC
E-Commerce

Multi-Vendor Marketplace (Shopify Integration)

A platform enabling merchants on Shopify to operate a multi-vendor marketplace, allowing multiple sellers to list and sell products through a single storefront while providing centralized control to the main merchant.

Node.jsMonolithicRabbitMQShopify
Location-Based E-Commerce

Hyperlocal Marketplace (Shopify Integration)

A location-based commerce solution designed for food and local product marketplaces, enabling users to discover and purchase products available near their geographic location.

Node.jsMonolithicGeolocationShopify
Real-Time Bidding System

Auction Platform (Shopify Integration)

An e-commerce auction system that enables sellers to list products for bidding, allowing buyers to place bids in real time, with the highest bidder winning the right to purchase the product.

Node.jsSocketMonolithicShopify

What I work with

Languages, frameworks, and tools I use to build and ship backend systems.

Languages

  • Node.js
  • TypeScript
  • JavaScript
  • Python

Frameworks

  • Express.js
  • FastAPI
  • NestJS

Databases

  • PostgreSQL
  • MongoDB
  • Redis
  • ScyllaDB
  • InfluxDB

Messaging & Queues

  • Apache Kafka
  • RabbitMQ

Architecture & Cloud

  • Microservices
  • REST
  • gRPC
  • AWS (Lambda, S3, API Gateway)
  • Docker

Security & Tools

  • CI/CD
  • JWT
  • OAuth2
  • TLS/SSL
  • AES Encryption
  • Agile/Scrum
  • Git

My journey

Get in touch

Open to new opportunities, freelance work, or a chat about backend and systems. Say hi.

Email meCall me

abhishektyagi199816@gmail.com · +91-8376075056

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