SAHIL KUMAR
Senior Software Engineer | Java Spring Boot
📧 dev001.sahil@gmail.com | 📞 +91-6239687412
GitHub: https://github.com/sahildev001 | LinkedIn: https://www.linkedin.com/in/sahil-kumar-44563321b
Professional Summary
Senior Software Engineer with 4+ years of specialized experience in Java Spring Boot backend development and AI-powered enterprise solutions. Proven expertise in building scalable microservices, Apache Kafka messaging, AI chatbot platforms, and multi-channel communication systems. Cross-platform development experience in Android and Flutter enables full-stack solution delivery in resource-constrained startup environments.
Technical Skills
Backend Development:
Java, Spring Boot, Spring Security, Spring Data JPA, Hibernate, RESTful APIs, GraphQL, AI/ML Integration
Mobile Development:
Android SDK, Kotlin, Flutter, Dart
Database Technologies:
MySQL, MongoDB, SQLite, Room, Redis
Architecture & Design:
Microservices, Event-Driven Architecture, MVC, MVP, MVVM, BLoC
Message Brokers:
Apache Kafka, Kafka Streams, RabbitMQ, ActiveMQ
Tools & Platforms:
Docker, Git, Jira, Maven, Gradle, IntelliJ, GCP, Firebase, Analytics Dashboards
Professional Experience
Ezeiatech Systems Pvt Ltd
Senior Software Engineer
August 2023 – Present
  • Architected AI-powered chatbot platform with multiple interaction channels including web, phone, and messaging interfaces
  • Developed AI Node configuration system enabling intelligent agent behavior and automated decision-making workflows
  • Built Phone AI system with voice call automation processing 1000+ daily voice interactions with natural language processing
  • Created universal website chatbot integration serving 100+ client websites with customizable AI responses
  • Implemented comprehensive analytics dashboard tracking user interactions, conversion rates, and AI performance metrics
  • Integrated Meta Developer APIs and WhatsApp Business API serving 10,000+ daily users with 99.9% uptime
  • Optimized backend systems using Apache Kafka achieving 70% performance improvement and 60% response time reduction
Xperge
Software Engineer
September 2021 – August 2023
  • Developed 8+ production Android and Flutter applications with 500,000+ downloads and 4.5-star average rating
  • Implemented clean architecture patterns (MVVM, MVP) improving code maintainability by 30% and reducing bugs by 40%
  • Built robust API integrations and third-party services increasing app functionality by 40%
  • Mentored 3 junior developers improving team productivity by 15% and reducing delivery timelines by 20%
Key Projects
OdioBot - Enterprise Chatbot Platform (Java Spring Boot)
Senior Software Engineer | 2023-Present
Built comprehensive AI-powered chatbot platform processing 1M+ interactions monthly for 100+ organizations. Developed AI Node configuration system for intelligent agents, Phone AI for voice call automation, website chatbot integration, and analytics dashboard for performance insights.
Technologies: Java, Spring Boot, Apache Kafka, MySQL, Redis, WhatsApp API, AI/ML Integration, Docker
Live: https://bot.odioiq.com
Kwot Music - Music Streaming Platform (Flutter)
Mobile Developer | 2022
Cross-platform music streaming application serving 50,000+ users. Implemented offline streaming improving retention by 30% in low-connectivity regions and VIP features increasing engagement by 50%.
Technologies: Flutter, Dart, Firebase, SQLite, RESTful APIs
Live: https://play.google.com/store/apps/details?id=com.kwot.music.android
Odio - Educational Platform Backend (Java Spring Boot)
Backend Developer | 2023
Developed question bank APIs with advanced search capabilities. Implemented event-driven messaging using Kafka and ActiveMQ for real-time notifications achieving 20% response time improvement.
Technologies: Java, Spring Boot, MySQL, ActiveMQ, Apache Kafka, Spring Data JPA
Kaily - Medical ECG Monitor (Android/Kotlin)
Android Developer | 2021-2022
Medical-grade ECG monitoring application for healthcare professionals with 500+ active users. Integrated AliveCor SDK for clinical-quality ECG data capture ensuring HIPAA compliance.
Technologies: Android, Kotlin, AliveCor SDK, Room Database, Retrofit
Live: https://play.google.com/store/apps/details?id=com.synex2.alivecor.android
Education
Bachelor of Engineering - Computer Science & Engineering
Chandigarh University, Punjab
2017-2021
Certifications
HackerRank Java Certificate (2021)
https://www.hackerrank.com/certificates/d18c41a56186
HackerRank Problem Solving Certificate (2021)
https://www.hackerrank.com/certificates/6f7dc24f88a5