// backend engineer · Spring Boot · Java

Sanjaithun S builds backend systems that hold up under load.

B.Tech Information Technology student (9.1 CGPA) writing dependable REST APIs with Java, Spring Boot, and SQL — from IoC containers to CNNs on the side.

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Dindigul, TN +91-78679-18197

GET /api/profile

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{
  "name": "Sanjaithun S",
  "role": "Java Developer",
  "education": {
    "degree": "B.Tech IT",
    "cgpa": 9.1,
    "years": "2023–2027"
  },
  "stack": [
    "Java", "Spring Boot",
    "SQL", "Firebase"
  ],
  "status": "open_to_work"
}

01 / About

Strong fundamentals in Java, Spring Boot, and SQL — applied to real, scalable web applications and REST APIs, backed by CS coursework and hands-on internship work.

Currently pursuing a B.Tech in Information Technology at Nandha College of Technology with a 9.1 CGPA. Seeking a Java Developer role focused on building efficient backend systems and full-stack applications — with a parallel interest in applied machine learning.

9.1

CGPA / 10

25%

latency reduced

300+

students led

NPTEL Elite certs

02 / Experience

Spring Backend Intern

Zebra Web Solutions

Apr 2025 – Jun 2025

01 Applied core Spring IoC and Dependency Injection to design modular RESTful APIs, reducing latency by 25% through loose coupling and response DTO optimization.
02 Implemented Low-Level Design principles and design patterns (Strategy, Factory) for role-based access control (RBAC) via Spring Security.
03 Designed data persistence layers with Spring Data JPA/Hibernate, applying SOLID principles to decouple domain entities from DAO interfaces, and configured connection pooling for high-concurrency workloads.

03 / Projects

Neuro Vision

ML / CV

Custom Convolutional Neural Network built with TensorFlow/Keras for automated, high-accuracy leaf disease classification. Uses data augmentation, batch normalization, and dropout regularization to prevent overfitting.

TensorFlow Keras CNN

SpicyCode

EdTech / API

Modular EdTech backend built with Spring Boot, applying SOLID principles and design patterns (Factory, Strategy) to handle course enrollments and payment processing flows, with a custom JPQL-optimized DAO layer.

Spring Boot Spring Data JPA SQL

04 / Skills

application.yml

# core stack
languages:    [Java, JavaScript, Python]
frameworks:   [Spring Boot, Scikit-learn, TensorFlow]
database:     [SQL, Firebase]
tools:        [Git, GitHub, Linux]

# concepts
concepts:
  - Data Structures & Algorithms
  - Object-Oriented Programming
  - System Design (LLD / HLD)
  - Multithreading
  - Convolutional Neural Networks

05 / Leadership

Organized a National-Level Hackathon and co-organized the TechSprint Hackathon as GDG Lead.

GDG OnCampus Data Science Lead — spearheaded community initiatives, driving the Google Cloud Campaign for 300+ students.

Winner, Power BI Hackathon at KPR. NPTEL Elite Certifications in Java, DBMS, Data Structures, and Data Science.

06 / Education

B.Tech, Information Technology

Nandha College of Technology

2023 – 2027 · 9.1 CGPA

Higher Secondary, Class XII

Tamil Nadu State Board

2021 – 2023 · 80%

07 / Contact

Let's build something that scales.

Open to Java Developer roles and backend engineering work. Reach out any time.

sanjaithunhema@gmail.com +91-78679-18197

LinkedIn GitHub LeetCode Portfolio