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Karthik 3489

Karthik 3489

Systems Engineer

Bangalore $40/hr Remote Hourly 1+ yrs exp 94 · Outstanding

About

Java Backend Developer with experience building scalable backend systems using Java, Spring Boot, and microservices. Worked on enterprise applications at Tata Consultancy Services, contributing to backend development, security improvements, testing, and deployment optimization. Passionate about system design, real-time architectures, and building personal projects involving distributed systems, WebSockets, OAuth2 security, and AI-powered applications. Strong problem-solving background with 700+ DSA problems solved and active interest in learning modern backend and AI engineering technologies.

Skills & Expertise (29)

Spring Boot Advanced
8.3/10
2
Years Exp
Microservices Advanced
8.0/10
2
Years Exp
REST APIs Advanced
8.0/10
2
Years Exp
AWS Intermediate
7.8/10
2
Years Exp
Agile Advanced
7.5/10
2
Years Exp
Unit Testing Java (Spring Boot) RAG Gradio HuggingFace Gemini API ChromaDB LangChain Design Patterns OpenTelemetry WebSockets OAuth2 JWT Spring Security Java LINUX Docker IntelliJ IDEA Maven Git Hibernate JPA MySql DSA

Work Experience

Systems Engineer

Tata Consultancy Services

Aug 2024 - Present

Developed and maintained features across Spring Boot microservices and Spring MVC applications, contributing to backend logic, REST APIs, and UI components. Optimized deployment workflow by migrating email templates from code to a database-driven configuration, reducing rebuild dependency and cutting deployment effort by 30%. Designed and implemented end-to-end unit and integration tests across repository, service, and controller layers, while migrating 4 Spring Boot applications from 3.x.x to 4.x.x and stabilizing test suites during the upgrade. Identified and resolved security vulnerabilities reported by Checkmarx, including SQL Injection and reflected XSS, improving application security and code quality. Refactored legacy UI by replacing custom CSS with a standardized client design system, improving consistency, maintainability, and alignment with UI best practices. Collaborated in an Agile environment, actively participating in sprint planning, code reviews, and iterative feature delivery.

Education

Bachelor’s Degree - Sree Vidyanikethan Engineering College

2020 - 2024 · India

Certifications

Salesforce AI Associate

Salesforce · 2024

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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 9/15
💰 Rate 5/5
🏆 Certs 5/5
Verified 5/5
Total Score 94/100

Profile Overview

Member sinceMay 2026
Work ModeRemote
AvailabilityHourly

Availability Details

Visa Status

Citizen

Relocation

Open to Relocation