Achal Desai

Mumbai, India

Achal Desai

Senior Backend Engineer

Senior backend engineer with 6+ years building and scaling Node.js microservices, event-driven systems, and cloud infrastructure on AWS.

Stack

Languages & Runtime

JavaScriptTypeScriptNode.js

Backend

Express.jsREST API designMicroservicesAuth & validationJest

Event-Driven & Messaging

KafkaSQSAWS LambdaConfluentRedis

Databases

MongoDBPostgreSQLMySQLFirebase

Cloud & DevOps

AWS (EKS, API Gateway, S3, CloudWatch)DockerGitLab CI/CDIaCDatadog

Also

MentoringAI-assisted engineering (Claude Code, GitHub Copilot, DeepSeek)

Projects

Algo Trade Service
TypeScript backend for algorithmic trading with a REST API for managing stocks, trades, and portfolios, using Angel One SmartAPI for market data and order execution.
TypeScriptNode.jsREST APIDocker
View project
GoInterpreter
A simple interpreter written in Go, covering parsing, variable declarations, arithmetic operations, conditionals, and loop constructs.
Go
View project
lightBulb
A web UI for controlling a Philips Wiz Connected smart bulb by bridging it through the Samsung SmartThings API.
HTMLSmartThings API
View project
nostradamus
TODO: one to two sentence description of the project.
TypeScriptExpressNode.js
View project

Experience

LTIMindtree · Mumbai

Jan 2024 — Present

Senior Software Engineer

  • Architected and managed Node.js microservices for a high-concurrency system supporting 2M+ agents, ensuring 99.9% uptime through optimized API contracts and horizontal scaling.
  • Engineered serverless workflows using AWS Lambda, SQS, and Kafka to handle asynchronous data exchanges, improving system decoupling and fault tolerance for real-time analytics.
  • Reduced end-to-end API latency by 20% by optimizing MongoDB aggregation pipelines, implementing Redis caching, and refining data access patterns for high-volume operational data.
  • Owned the full CI/CD lifecycle using GitLab and AWS (EKS/CloudWatch), implementing automated monitoring and alerting that reduced production incident resolution time (MTTR) by 15%.
  • Spearheaded cross-functional collaboration between Angular frontend and backend teams to define robust RESTful schemas, enforcing strict code quality and release discipline across the microservices ecosystem.

BharatCall (Neeks & Hanks Solutions)

Jul 2020 — Dec 2023

Backend Engineer (Founding)

  • Acted as the sole backend engineer to architect, build, and scale a D2C SaaS platform from inception to 50,000+ production users, using Node.js, Express, and MongoDB.
  • Engineered mission-critical REST APIs and integrated third-party systems, including an in-house SMPP SMS gateway, WhatsApp Business API, Firebase in-app messaging, and major payment processors.
  • Accelerated product launch by developing end-to-end features, pairing high-throughput backend workflows with Angular-based dashboards for real-time e-commerce and campaign performance tracking.
  • Independently managed all production deployments and system reliability, implementing logging, monitoring, and automated pipelines for high availability and rapid incident resolution.

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