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Arnava Kumar SinhaJava Full Stack Developer
Summary

Passionate and solution-driven Full Stack Java Developer with a B.Tech in Electrical Engineering from Bhagalpur College of Engineering. Skilled in backend engineering, scalable architecture design, and secure REST API development using Java, Spring Boot, and SQL. GATE 2024 qualified (AIR 6005) with proven experience across AI, IoT, and competitive programming. Adept at full-cycle software development with hands-on project leadership, and a commitment to clean, maintainable code.

Skills
Programming Languages
  • •Java, Python, C++, C, JavaScript, HTML, CSS, SQL
Backend Development
  • •Spring Boot, Spring Security, Hibernate, Servlets, JSP, JDBC, RESTful APIs, Microservices
Frontend & UI Technologies
  • •Java Swing, ReactJS, Tkinter
  • •Responsive Web Design, DOM Manipulation, Form Validation
Databases
  • •MySQL, MongoDB
  • •Relational Schema Design, Query Optimization, JDBC Integration
Cloud Platforms & DevOps Tools
  • •Google Cloud Platform (GCP), Salesforce Trailhead
  • •GitHub, GitLab, Postman, Swagger, CLI, VS Code, IntelliJ IDEA, Eclipse
Build & CI Tools
  • •Maven, Gradle, Git, GitHub Actions
Software Engineering & Development
  • •Software Architecture & Design, Product Development
  • •Software Troubleshooting, Debugging, Version Control
  • •Agile Methodologies, SDLC Practices, Documentation
Security & Authentication
  • •JWT Authentication, Spring Security
  • •Role-Based Access Control (RBAC), API Security, Secure Coding
Embedded Systems & IoT
  • •Arduino UNO, Sensors (IR, LDR, Ultrasonic), Servo Motors
  • •MATLAB, SIMULINK, Microcontroller Logic & Automation
Artificial Intelligence & NLP
  • •NLP Chatbots, Prompt Engineering
  • •Intent Classification, Rule-Based Logic
Data Analytics
  • •Data cleaning and visualization (from Google Analytics Course),
  • •Google Data Analytics Specialization (Coursera),
  • •Basic knowledge of Excel & Data Studio
Competitive Programming & Problem Solving
  • •CodeChef 4★ (Max Rating: 2002, 1000+ problems solved)
  • •Codeforces Specialist (1667), HackerRank 5★,
  • •700+ LeetCode Problems Solved
  • •Data Structures & Algorithms (DSA), Problem Analysis
Design & Prototyping Tools
  • •Canva, Figma, Basic UX/UI Understanding
  • •Wireframing, Layout Planning, User-Centered Design
Soft Skills
  • •Team Leadership & Mentoring
  • •Technical Communication & Presentation
  • •Problem Solving, Time Management, Self-Motivation
  • •Event Coordination (Hackathons, Tech Clubs)
Projects
VoyageSphere – Travel Platform, MERN + Spring Boot, PostgreSQL
  • •Collaborative travel planner with user authentication.
  • •Used PostgreSQL, Java, Spring Boot, React, Node for development.
  • •Includes itinerary, reviews, and sharing features.
    • Freelance Job Portal, Java, Spring Boot, MySQL
  • •Role-based platform for freelancers and employers with secure login.
  • •REST APIs built using Spring Boot; persistent storage in MySQL.
  • •Includes job posting, user management, and hiring workflows.
    • Fantasy League – Sports Game, Java, JSP, Servlet, JDBC
  • •Fantasy sports app with login, team creation, and matches.
  • •Backend with Servlets and MySQL, frontend via JSP.
  • •Leaderboard and points system implemented.
    • Library Management System, Java, JDBC, MySQL
  • •CLI app to manage books, users, and transactions.
  • •Used JDBC for database operations and validation logic.
  • •Provided admin control and real-time tracking.
    • Player Management System, Java, JDBC, MySQL
  • •CRUD-enabled sports database for player records.
  • •Connected Java backend to MySQL with JDBC.
  • •Supports stats, filters, and team assignment.
    • Snake Game, Java
  • •Classic snake game built for terminal interaction.
  • •Used coordinate logic and real-time updates.
  • •Features include speed control and scoring.
    • Calculator, Java Swing
  • •Developed a basic arithmetic calculator in Java Swing.
  • •Handled user input with validation and error-checking.
  • •GUI optimized for clarity and usability.
    • WordMaster – Vocabulary Builder, (Python, Tkinter)
  • •GUI app to improve vocabulary using word quizzes.
  • •Built with Python logic and a Tkinter-based interface.
  • •Features include score tracking and daily prompts.
    • GenAI Chat Messenger, Python, NLP
  • •Terminal-based chatbot using NLP and rule-based logic.
  • •Simulates real-time conversational flow.
  • •Designed for text-based human interaction.
    • Sun Catcher:Intelligent Dual-Axis Solar Tracker, Arduino, Sensors
  • •Built a dual-axis solar tracker with real-time sun following.
  • •Uses servo motors and LDR sensors with Arduino.
  • •Optimizes solar panel angle for efficiency.
    • Water Level Detector, Arduino UNO, Sensors
  • •Alert system for rising water levels using sensors.
  • •LEDs indicate levels, and the buzzer warns threshold.
  • •Designed for flood warning in homes or farms.
    • Line-Follower Bot and Edge-Detector Bot, Sensors, Arduino UNO
  • •An autonomous bot that follows lines and avoids edges.
  • •Uses IR sensors for navigation and safety.
  • •Used in prototype delivery and automation demos.
    • Professional Experience
    Google, Software Application Development Apprentice
    Apr 2025 – Present | Bengaluru, Karnataka, India
  • •Built secure backend systems using Spring Boot and Java.
  • •Integrated APIs and databases with performance optimization.
  • •Contributed to modular and scalable enterprise solutions.
    • Encodingo, Social Media Manager
    Jun 2021 – Mar 2023 | Bhagalpur, Bihar, India
  • •Scaled LinkedIn and Instagram accounts organically.
  • •Managed content strategies and audience engagement.
  • •Improved branding and user reach through campaigns.
    • LEADERSHIP & CAMPUS INVOLVEMENT
    ESROS Club (Robotics Club), BCE Bhagalpur, Head Coordinator
    Bhagalpur, Bihar, India
  • •Organized robotics workshops and inter-college events.
  • •Mentored juniors in Arduino and automation basics.
  • •Led prototyping and hardware sessions.
    • Debuggerz Club (Coding Club), BCE Bhagalpur, Head Coordinator
    Bhagalpur, Bihar, India
  • •Hosted coding contests and peer-learning sessions.
  • •Promoted DSA practice and collaborative programming.
  • •Guided juniors in problem-solving and project work.
    • Education
    BTech EE, Bhagalpur College OF Engineering
    2020 – 2024 | Bhagalpur, Bihar, India

    CGPA: 7.89

    Intermediate, S K P Vidya Vihar
    2018 – 2020 | Bhagalpur, Bihar, India

    Percentage: 81.6

    Matriculation, Saint Joseph's School
    2006 – 2018 | Bhagalpur, Bihar, India

    Percentage: 83.17

    Courses
    Java Full Stack Development, JSpiders
    Sep 2024 – Present | Bhagalpur, India
    Achievements
    4 Star on Codechef

    Highest rating: 2002

    1000+ problems solved

    LeetCode

    I have solved over 700 DSA Problems

    5 Star on Hackerrank

    I have gained 5 stars in some languages

    Ranger on Salesforce

    100+ Trailhead Badges

    Specialists on CodeForces

    Highest Rating: 1667

    GATE 2024 (EE)

    AIR 6005

    Certificates
    Google Data Analytics Specialization

    Coursera (2022)

    Spring Security & JWT

    Coursera (2023)

    Internships & Training
    Technical Content Engineer Intern, HackerEarth
    Mar 2025 – Mar 2025 | Bengaluru, Karnataka, India
  • •Created competitive coding challenges and test cases.
  • •Authored editorials and improved platform content quality.
  • •Enhanced assessments with logic-based problems.
    • Full Stack Developer Trainee, JSpiders
    Sep 2024 – Feb 2025 | Bengaluru, Karnataka, India
  • •Trained in Java, Spring Boot, Hibernate, and Microservices.
  • •Built real-time web apps and enterprise REST APIs.
  • •Practiced version control and agile workflows.
    • AI Intern, RadicalX AI
    Dec 2023 – Feb 2024 | Remote, USA
  • •Developed a chatbot and crossword solver using NLP.
  • •Built rule-based logic with Python and prompt design.
  • •Focused on enhancing human-like interactions.
    • Electrical Engineer Trainee, Bihar State Power Transmission
    Mar 2023 – Apr 2023 | Naugachia, Bihar, India
  • •Studied substation instrumentation and switchgear systems.
  • •Assisted with SCADA and protective relay maintenance.
  • •Gained insight into operational power systems.
    • Web Development Intern, Encodingo
    Jun 2022 – Oct 2022 | Bhagalpur, Bihar, India
  • •Designed web pages using HTML, CSS, and JS.
  • •Improved responsiveness and performance of the frontend.
  • •Tested features across devices and browsers.
    • Awards
    Runner-Up, Bhagalpur College Of Engineering
    2023

    2nd Prize in Intra-College Coding Competition

    Gold Medal, SOF National Cyber Olympiad (2016)
    2016

    1st Rank (School-Level)

    Bronze Medal, SOF National Cyber Olympiad (2016)
    2016

    3rd Rank (State-Level)

    Workshops
    Applications of Signal Processing for Wearables, IIT Patna – KARYASHALA (SERB Initiative)
    Mar 2024 | Patna, India

    Attended a high-end workshop on Applications of Signal Processing for the Development of Wearables for the Disabled and Elderly at IIT Patna which was hosted under KARYASHALA Scheme a SERB Initiative

    Languages
    English — Fluent|Hindi — Conversational|Bengali — Native
    Interests
    Reading Novels
    Listening Songs