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Hariharan

Hariharan

Software Engineer

Chennai, India 2+ yrs exp 85 · Excellent

About

Full-Stack Software Engineer with 2+ years of production experience in Java and Spring Boot backend systems. Built Vectora, a hybrid search engine combining inverted indexing, vector search, and LLM/MCP integration. Experienced in REST API design, microservices, SQL optimization, AWS-backed cloud workflows, and end-to-end backend delivery. Proficient in React and Next.js for frontend development.

Skills & Expertise (40)

RESTful API Development Advanced
7.8/10
2
Years Exp
Spring Boot Intermediate
7.5/10
2
Years Exp
Java Intermediate
7.3/10
2
Years Exp
SQL Intermediate
7.2/10
2
Years Exp
Production Deployment Indexing Data Migration Backup & Restore AWS S3 LINUX Git GitHub Shell Scripting Postgresql Monitoring Release Support Webhooks OAuth2 cURL Postman Third-Party API Integration MCP integration Data Structures & Algorithms Core Java Spring Framework React Next.js component-driven UI development System Design OOP Design Patterns Query Optimization Distributed Systems Fundamentals Scalability Performance Optimization Reliability Debugging Troubleshooting MySql Schema Design

Work Experience

Software Engineer

Wehaul Logistics Private Limited

May 2024 - Present

Built and owned Java / Spring Boot backend services and REST APIs powering core production logistics workflows, with focus on scalability, microservices-style service design, and operational reliability. Integrated 6+ third-party APIs — Meta WhatsApp, Justdial, Indiamart, Intutrack, OAuthKey, and BuzzDial — with webhook consumers, retry logic, and OAuth2 token lifecycle management, reducing manual intervention in lead and notification workflows. Reduced SQL query latency and database CPU load by ~40% through targeted index creation, schema cleanup, and query rewrites across production MySQL and PostgreSQL instances. Eliminated recurring external API failures by implementing input validation, retry handling, and failure-isolation patterns across notification and live-tracking integrations. Owned Linux deployment pipeline — Git workflows, shell scripting, cron automation, AWS S3 storage — including production migration to DigitalOcean with full data integrity validation.

Software Development Intern

Acceleron Labs Private Limited

Nov 2023 - Apr 2024

Delivered backend features, bug fixes, and release-cycle support across Java application modules in an Agile team. Diagnosed and resolved production issues during deployment cycles, improving service reliability across multiple releases.

Education

Bachelor of Engineering - Computer Science - The Oxford College of Engineering

2020 - 2024 · Afghanistan

Certifications

No certifications added yet

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Profile Score Breakdown

📷 Photo 10/10
📄 Resume 10/10
💼 Job Title 10/10
✍️ Bio 10/10
🛠️ Skills 20/20
🎓 Education 10/10
⏱️ Experience 10/15
💰 Rate 0/5
🏆 Certs 0/5
Verified 5/5
Total Score 85/100

Profile Overview

Member sinceMay 2026

Availability Details

Visa Status

Citizen

Relocation

Open to Relocation