Freelance · Razz Security
Tech 2 Tots
A static marketing website for a software service — lets visitors download the software and view service details, pricing and contact information.
HTML/CSS/JSStatic Site
< hello world />
Vishnu R N
Backend Software Developer
3.5+ years building and maintaining backend systems with Node.js, TypeScript and PostgreSQL — from API design to deployment on AWS.
01. About
Summary
Backend Software Developer with 3.5 years of experience developing and maintaining web products. Skilled in PostgreSQL, Node.js, TypeScript, Git and JavaScript, with practical experience in API design, testing, and debugging using Postman. Proven track record of delivering robust backend solutions and quickly adapting to new technologies and complex problem-solving challenges. Based in Chennai, India.
02. Skills
Core Qualifications
TypeScript
JavaScript
Node.js
React JS
PostgreSQL
Database Management
Axios
Postman API
Git / GitHub
AWS (S3, CloudWatch)
Manual Testing
Regression Testing
Jira
Agile / Scrum
03. Experience
Where I've Worked
Software Developer
07/2022 – 07/2026Knetworks Innovative Solution
React JS · AWS · TypeScript · Axios · PostgreSQL · Node.js · Jira · Git
- Worked with applications deployed on AWS cloud infrastructure, including Amazon S3 and CloudWatch — gaining hands-on exposure to deployment, environment configuration, monitoring and troubleshooting.
- Wrote and maintained unit and integration tests; performed API testing with Postman and debugged issues across backend and database layers.
- Followed Git/GitHub branching, pull-request and code-review practices as part of Agile/Scrum ceremonies with cross-functional teams.
- Contributed to improving development processes, documenting technical decisions, and following security and access-control best practices.
Senior Full Stack Developer (Freelancer)
05/2025 – 06/2026Razz Security
- Built and shipped two client static websites end-to-end (see Projects below).
- Led team management — onboarded and trained three new candidates in JavaScript fundamentals, website development basics, and AI-assisted ("vibe") coding, then deployed the finished sites.
04. Projects
Things I've Built
Freelance · Razz Security
A1 Application Repair Services
A website for a home appliance repair service that captures and stores customer data in a database, with WhatsApp integration for direct customer contact.
JavaScriptDatabaseWhatsApp API
More projects and case studies coming soon — check GitHub for the latest.
05. Education
Academic Background
Master of Business Administration
Logistics and Supply Chain Management
Thangavelu Engineering College, Chennai
05/2021Bachelor of Science
Mathematics
Agurchand Manmull Jain College, Chennai
05/2017Higher Secondary
Sacred Heart Matriculation Higher Secondary School, Chennai
06/2014SSLC
Sacred Heart Matriculation Higher Secondary School, Chennai
06/2012
Languages
Tamil
English
Malayalam
06. Contact
Let's Connect
Open to new opportunities and interesting backend/full-stack projects. Reach out any time.
Chennai, 600119