Open to opportunities

krishna bsr

@krishnabsr

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Senior Full Stack JavaScript engineer specializing in Node.js and AWS.

India

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What I'm looking for

I seek a senior engineering role where I can build scalable Node.js and AWS-based systems, work in agile teams, mentor others, and deliver measurable performance and UX improvements.

I am a Senior Full Stack JavaScript engineer with extensive experience building scalable backend systems and modern front-end applications using Node.js, TypeScript, and React.

I have led high-impact projects across top-tier companies, improving API performance, refactoring codebases, and introducing microservice architectures that improved responsiveness and developer onboarding.

My hands-on experience spans AWS (Lambda, S3, DynamoDB, CDK), databases (MongoDB, PostgreSQL), messaging (RabbitMQ), and strong TDD practices with high unit-test coverage.

I thrive in agile teams, prioritize clean code and reusable components, and focus on delivering measurable business value through performance improvements and robust engineering practices.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-stack Engineer

Current

TekSystems

Jan 2025 - Present (9 months)

Enhanced API services for SAMS Pharmacy by adding refactored endpoints with rate limiting and caching, decreasing API response time by 2.5x and migrated portions of the web UI to React.

React JavaScript API Design AWS Caching API Rate Limiting RESTful APIs

Senior Full-stack Engineer

InfoGain

Jan 2023 - Dec 2024 (1 year 11 months)

Built backend microservices using Node.js and AWS for Neighborly, adding 5+ API endpoints and S3 file storage, implemented RabbitMQ async communication and achieved ~90% unit test coverage.

Node TypeScript React MongoDB AWS S3 RabbitMQ Unit Testing Microservices

Senior Backend Engineer

L&T Technology Services

Jan 2023 - Dec 2023 (11 months)

Developed a microservice-based API data platform on AWS with 50+ REST endpoints using Node.js and TypeScript, and implemented an API visualization Lambda (CDK + Swagger) to improve stakeholder understanding.

Node TypeScript MongoDB AWS Lambda AWS CDK Swagger Microservices API Development

Senior Systems Engineer

Infosys

Feb 2021 - Feb 2023 (2 years)

Built backend architecture for ExxonMobil well downtime tracker using Node.js, Express and PostgreSQL, delivered 10+ APIs, S3 image upload, and webhooks that increased customer satisfaction by 50%.

Node Express PostgreSQL MongoDB AWS S3 Webhooks Sendgrid Authentication

Senior Software Engineer

ESoft Labs

Jan 2019 - Jan 2021 (2 years)

Delivered backend architecture for a Malaysian electricity app using Node.js and MongoDB to track consumption and grievances, and implemented JWT authentication reducing auth latency/errors by 50%.

Node MongoDB JWT React API Development Authentication Backend

Software Engineer

NotNul

Oct 2017 - Mar 2019 (1 year 5 months)

Developed 10+ API endpoints and integrated third-party services for a multi-language ebook reader app using Node.js and PostgreSQL.

Node PostgreSQL API Development Third Party Integrations Backend Engineering JavaScript

Software Engineer

Schemax Expert Techno Crafts

Implemented Node.js APIs and services for an ERP tracking apparel manufacturing processes, improving application performance for raw material and employee tracking.

Node MongoDB API Development ERP Backend Services Performance Optimization React

Software Engineer

Contify

Migrated backend from monolith to microservices (Node.js, Python), developed authentication and reporting microservices that reduced response time by 60% and migrated UI from AngularJS to React.

Node Python Microservices Authentication Reporting React Performance Optimization

Education

Degrees, certifications, and relevant coursework

GMR Institute of Technology

Bachelor of Technology, Information Technology

2012 - 2016

Completed a Bachelor of Technology in Information Technology with coursework and projects focused on backend and web development using modern JavaScript technologies.