Open to opportunities

Arvind Kumar

@arvindkumar8

Software Engineer with 3+ years building scalable Java/Spring Boot backend systems, microservices, and secure enterprise integrations.

India

Message

What I'm looking for

I’m looking for a backend/microservices role where I can build scalable Java/Spring Boot systems, strengthen security and performance, and ship production-ready features—while also growing into Spring AI/RAG work for LLM-powered capabilities.

I’m a Software Engineer with 3+ years of experience building scalable backend systems and enterprise applications using Java and Spring Boot. I focus on REST APIs, OAuth2/JWT security, and event-driven microservices that improve reliability and deployment speed for real B2B platforms.

In my recent role, I built microservices for a B2B integration platform serving 50+ clients, improving modularity and deployment. I delivered measurable impact—OpenSearch full-text search accuracy from 60% to 100% with a 45% latency reduction, added Redis caching to cut MySQL load by 70% and reduce response time from 200ms to under 20ms, and migrated a service to a more cost-efficient setup saving 40% monthly AWS costs.

I’m also hands-on with production excellence: I implemented OAuth2/JWT authentication to improve security by 40%, resolved 3 critical production issues within SLA while maintaining 99.9%+ uptime, and upgraded a codebase from JDK 8 to JDK 24. I’m currently exploring Spring AI and RAG architectures to build LLM-powered features on Spring Boot.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

JusTransform

Feb 2024 - Present (2 years 4 months)

Built Java/Spring Boot microservices for a B2B integration platform serving 50+ clients, improving modularity and deployment. Implemented OpenSearch search (60% to 100% accuracy, 45% lower latency), Redis caching (70% less MySQL load, 200ms to <20ms), OAuth2/JWT security (40% security improvement), and resolved 3 critical production issues to maintain 99.9%+ uptime.

Java Spring Boot Microservices REST APIs Apache Kafka OpenSearch Redis OAUTH2 AWS

Software Engineer

Alignbits LLC

Jan 2023 - Jan 2024 (1 year)

Developed backend microservices for a B2B integration platform using Java and Spring Boot, building REST APIs for client onboarding and partner/internal integration flows. Created Groovy-based data transformation services, implemented event-driven messaging with Kafka, maintained MongoDB/MySQL persistence, and improved stability via production debugging and slow-query tuning with JUnit 5/Mockito-b

Java Spring Boot REST APIs Groovy Apache Kafka MongoDB MySQL Junit Mockito

Education

Degrees, certifications, and relevant coursework

Indian Institute of Information Technology (IIIT) Manipur

Bachelor of Technology, Electronics and Communication Engineering

2018 - 2022

Bachelor of Technology in Electronics and Communication Engineering with coursework in data structures & algorithms, object-oriented programming, operating systems, DBMS, and computer networks.