Java Full Stack Developer · Builder · Founder

Engineering ideas into products.

I’m Jai Sai Ram Challapalli — a Java Full Stack Developer focused on Spring Boot, microservices, Angular, Kafka, SQL and scalable digital products. I also build ManaCoding.

Explore my work ↗Start a conversation

JSR

Visakhapatnam · India / 01

3+ yrsSoftware engineering

2000+Users supported

Java

Spring Boot

Microservices

Angular

Kafka

MySQL

Oracle SQL

Docker

Kubernetes

REST APIs

ManaCoding

Product Engineering

Java

Spring Boot

Microservices

Angular

Kafka

MySQL

Oracle SQL

Docker

Kubernetes

REST APIs

ManaCoding

Product Engineering

01 / About

A portfolio designed around clarity, craft and the details that make software feel trustworthy.

I build systems that connect business workflows, people and technology.

My work sits at the intersection of backend engineering and product experience. I enjoy turning complicated business requirements into clean APIs, dependable services and interfaces that people can actually use.

From HRMS and payroll workflows to developer education and product platforms, my focus is practical engineering with a strong bias toward shipping.

Years engineering

Users supported

Reported query improvement

Target availability

02 / Experience

From enterprise workflows to production APIs.

A career story told through responsibilities, systems and outcomes.

Junior Software Developer

Integrated Information Solutions LLP

NOV 2024 — MAY 2026

Worked on enterprise HRMS and Payroll systems with a focus on backend services, integrations, databases and production stability.

Engineered HRMS and Payroll modules supporting 2,000+ employees.
Built RESTful APIs using Spring Boot and microservice patterns.
Integrated Apache Kafka for asynchronous service communication.
Built responsive Angular interfaces for business workflows.
Tuned Oracle SQL and MySQL queries with reported performance improvement.
Resolved production issues while targeting high application availability.

Full Stack Developer

Enterprise & Product Development

PREVIOUS PROJECTS

Built business applications across Java, PHP and modern web stacks, working across requirements, implementation, testing and deployment.

Developed reusable modules for ERP and HRMS workflows.
Worked with authentication, role-based access and data-heavy screens.
Designed relational schemas and optimized queries.
Collaborated through Agile SDLC practices.
Used Git, Bitbucket, Maven, Postman and container tooling.
Connected frontend experiences to production-ready APIs.

YEARS EXPERIENCE

EMPLOYEES / USERS SUPPORTED

REPORTED QUERY TIME REDUCTION

TARGET APPLICATION AVAILABILITY

03 / Selected work

Products, platforms and systems built to move work forward.

01Enterprise ERP

Bizionix ERP

Enterprise operations across sales, purchase, HRMS, payroll, production, warehouse and finance.

Spring Boot Angular SQL REST

02Business Platform

HRMS & Payroll

High-volume employee and payroll workflows with reporting, approvals and service integrations.

Java Spring Boot Oracle Kafka

03Developer Platform

ManaCoding

A learning and developer ecosystem bringing tutorials, coding practice, education and digital products together.

HTML CSS JavaScript PHP AI

04SaaS & Internal Tools

MyERP / Product Systems

Reusable business modules designed for real-world operational workflows and scalable maintenance.

Java PHP MySQL Angular

“Good software should feel simple on the surface — even when the engineering underneath is complex.”

— Jai Sai Ram Challapalli

04 / Skills

A practical stack for building full-stack applications, services and production workflows.

Strong in backend engineering. Comfortable across the entire product surface.

Java 21 Spring Boot Microservices REST APIs Angular TypeScript JavaScript Apache Kafka Hibernate/JPA MySQL Oracle SQL Docker Kubernetes Git Bitbucket Maven Postman PHP Laravel HTML5 CSS3 Bootstrap 5 OOP System Design Agile Design Patterns AI Tools

Java / Spring Boot94%

REST & Microservices92%

SQL / Databases90%

Angular / TypeScript84%

Kafka / Messaging80%

Docker / Kubernetes70%

Git / CI workflows84%

System Design78%

PHP / Laravel76%

AI-assisted development82%

05 / Education

A mechanical-engineering beginning with a software-engineering direction.

2021

CGPA 7.26

B.Tech — Mechanical Engineering

Chaitanya Engineering College

2018

65.39%

Diploma — Mechanical Engineering

Chaitanya Engineering College

SSC

CGPA 7.7

Secondary School

The Presidential School

06 / What I build

Open to engineering roles, product collaborations, workshops and digital platform work.

Backend Engineering

Spring Boot APIs, microservices, authentication, data access and production workflows.

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Full Stack Applications

Angular interfaces connected to robust backend services and relational databases.

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Developer Education

Full Stack workshops, Java, Spring Boot, Angular, SQL and deployment-focused learning.

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07 / Contact

Let’s build something worth shipping.

For Java backend work, full-stack projects, developer education, ManaCoding collaborations or product development, reach out directly.

Send an email ↗

Email01 ↗Phone02 ↗LinkedIn03 ↗GitHub04 ↗ManaCoding05 ↗