Software Engineer • Open to Opportunities

Hi, I'm Nilesh Kotkar

Software Engineer & DevOps Engineer

Creating fast, secure and scalable enterprise applications with clean architecture and exceptional user experience.

Java 17+Spring Boot 3PythonFlutterReact.jsReact NativeFrappeSQL
Microservices

Java 17 & Spring Boot 3

API Security

JWT & Spring Security

DevOps & Cloud

Docker & CI/CD Pipelines

Full Stack

React.js & Mobile Apps

Nilesh Kotkar - Software Engineer & DevOps Engineer
Nilesh Kotkar
Software Engineer & DevOps Engineer
2+ Yrs Exp
About Me

Engineered for Performance & Scalability

Passionate Software Engineer dedicated to crafting robust backend architectures and seamless digital experiences.

Software Developer at iQSys Technologies Pvt. Ltd.

I am a Software Engineer at iQSys Technologies with hands-on experience across full-stack web development, backend engineering, mobile app delivery, server deployment, and IT infrastructure support. I enjoy working across the entire application lifecycle — transforming business requirements into secure, high-performance code, integrating optimized databases, automating CI/CD build pipelines, and troubleshooting complex production server environments. Driven by technical curiosity, I am constantly exploring modern software tools and engineering practices to build reliable applications, solve real-world problems, and deliver impactful software solutions.
Microservices Architecture
Full SDLC Ownership
DevOps & Docker

Scalable Enterprise Backends

2+ years building production-grade microservices and REST APIs using Java 17, Spring Boot 3, JPA, and Hibernate.

Query & Database Optimization

Slashing API response times by up to 60% with PostgreSQL/MySQL query tuning, indexing, and HikariCP pool optimization.

Security & Authentication

Implementing stateless JWT security, Spring Security RBAC authorization, password encryption, and audited API workflows.

End-to-End Delivery

From database design to React/React Native frontend integration, containerization with Docker, and CI/CD deployment.

Work History

Professional Experience

Delivering high-impact enterprise backends and full-stack software solutions.

Full-time

Software Engineer

iQSys Technologies Pvt. Ltd.
Oct 2025 - Present
Pune, India
10+
Backend Services Delivered
-40%
Deployment Dependencies
-60%
API Response Time

Key Responsibilities & Accomplishments

  • Designed & developed 10+ production-grade backend services and microservices using Java, Spring Boot, Spring Data JPA, Hibernate, and REST APIs for enterprise applications.
  • Configured and maintained CI/CD build & deployment pipelines using Docker, Jenkins, and Git, automating containerized application deployment to live Linux/Windows servers.
  • Customized enterprise modules, business workflows, forms, notifications, and custom logic in Frappe Framework and ERPNext (CRM & Helpdesk).
  • Optimized complex SQL queries and database indexing in PostgreSQL and MySQL, reducing API response times by up to 60%.
  • Implemented Spring Security and role-based stateless JWT authentication to secure enterprise REST endpoints.
  • Engineered cross-platform mobile apps (such as Basketly & NexPlay) and integrated secure REST APIs, successfully publishing them to the Google Play Store.
  • Provided end-to-end server administration, environment setup, application installation, hardware/networking troubleshooting, and L2/L3 production IT support.
JavaSpring BootSpring Data JPAHibernateREST APIsMicroservicesSpring SecurityPostgreSQLMySQLDockerJenkinsCI/CDFrappe FrameworkERPNextReact NativeLinux / Windows AdminGit
Self Project / Freelance

Software Developer

Freelance
2022 - Present
Remote
5+
Projects Completed
100%
Client Satisfaction

Key Responsibilities & Accomplishments

  • Full Stack Java & Mobile Developer specializing in Java, Spring Boot, React.js, React Native, Frappe, and RESTful API development.
  • Built and deployed secure, scalable full-stack applications and mobile apps from scratch, overseeing complete lifecycle from coding to server hosting and Play Store deployment.
  • Provided IT support, system configuration, and database administration for client applications.
JavaSpring BootReact NativeReact.jsFrappeDockerJenkinsPythonPostgreSQLMySQL
Academic Foundation

Education & Qualifications

Degrees and education background.

2025

MCA

Pirens Institute of Business Management and Administration, Loni

Completed my MCA from Pirens Institute of Business Management and Administration, Loni in 2025.

2021–2023

BCA

Sangamner College, Sangamner

Completed my BCA from Sangamner College, Sangamner (2021–2023).

2020

HSC

Sahyadri Jr. College, Sangamner

Completed my HSC from Sahyadri Jr. College, Sangamner.

2018

SSC

B.G.P Sahyadri School, Sangamner

Completed my schooling from B.G.P Sahyadri School, Sangamner.

Featured Work

Flagship Projects

Production-grade full stack applications, microservices, and backend APIs.

Basketly – Daily Dairy & Grocery Delivery Platform
Full StackFeatured

Basketly – Daily Dairy & Grocery Delivery Platform

A modern cross-platform delivery & subscription platform delivering farm-fresh dairy and daily essentials with flexible recurring subscriptions, real-time tracking, and automated doorstep delivery.

•Flexible daily & custom recurring subscription models with pause/resume automation
•Real-time order lifecycle tracking from farm processing to apartment doorstep delivery
JavaSpring BootReact NativePostgreSQL+3 more
NexPlay – Sports Academy & Club Management App
MobileFeatured

NexPlay – Sports Academy & Club Management App

An all-in-one sports management ecosystem designed to streamline academy, club, and team operations with role-based access (Admin, Coach, Player), training session planning, automated attendance, match scheduling, and equipment inventory.

•Role-Based Access Control — Dedicated panels and workflows for Admins, Coaches, and Players
•Player Profiles & Progress Metrics — End-to-end athlete management tracking performance metrics, evaluations, and growth
React NativeJavaSpring BootREST APIs+3 more
Enterprise Employee Management & RBAC System
BackendFeatured

Enterprise Employee Management & RBAC System

A secure enterprise backend system for managing employee records, department structures, audit logs, and granular role-based authorization.

•Stateless JWT-based authentication and role-based access control (Admin, Manager, Employee)
•CRUD REST APIs with database-level pagination, filtering, and multi-field sorting
Java 17Spring Boot 3Spring SecurityJWT+3 more
Event-Driven Microservices E-Commerce Core
BackendFeatured

Event-Driven Microservices E-Commerce Core

Distributed microservices architecture featuring Spring Cloud API Gateway, Eureka discovery server, Resilience4j circuit breaker, and Kafka event stream processing.

•Spring Cloud Gateway with Rate Limiting and Centralized JWT validation
•Resilience4j Circuit Breakers to prevent cascading failures across services
Spring Boot 3Spring CloudKafkaDocker+3 more
Technical Expertise

Skills & Technologies

Tools, frameworks, and languages I use daily to build enterprise systems.

Backend Development

Building secure, scalable backend systems

javaJava
springbootSpring Boot
springmvcSpring MVC
springsecuritySpring Security
jpaSpring Data JPA
hibernateHibernate
RESTful APIs
Microservices
pythonPython
Frappe

Frontend Development

Creating modern, responsive user interfaces

reactReactJS
reactnativeReact Native
flutterFlutter
angularAngular
javascriptJavaScript ES6+
html5HTML5
css3CSS3
tailwindTailwind CSS
bootstrapBootstrap

Database

Designing efficient data storage

mysqlMySQL
postgresqlPostgreSQL
mongodbMongoDB
firebaseFirebase

Tools

Building, testing, and shipping reliably

gitGit
mavenMaven
dockerDocker
jenkinsJenkins
postmanPostman
swaggerSwagger
kafkaKafka
Creative Pursuit

Photography & Visual Stories

Beyond writing code, I capture moments through studio portraits, cultural heritage, and festival celebrations.

Engineering & Workspace Portrait
Portrait / Tech

Engineering & Workspace Portrait

Studio Portrait Perspective
Portrait

Studio Portrait Perspective

Divine Mandala & Festival Lights
Culture & Festivals

Divine Mandala & Festival Lights

Ganeshotsav & Emerald Backdrop
Culture & Festivals

Ganeshotsav & Emerald Backdrop

Golden Craft & Sacred Traditions
Culture & Festivals

Golden Craft & Sacred Traditions

Engineering Articles

Latest Technical Blog Posts

Deep dives on Java, Spring Security, PostgreSQL query optimization, and Microservices.

View All Articles
Get In Touch

Let's Build Something Scalable Together

Have a project in mind, an opportunity, or a technical discussion? Send me a message!

Contact Information

Email Address
nileshkotkar2002@gmail.com
Location
Pune, India
Current Status: Open for Full-Time Roles & Projects
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