Adityam Srivastava

Junior Java Developer

New Delhi, India 0+ yrs exp 81 · Excellent

About

Junior Java Developer with hands-on Core Java, OOP, Spring Boot, and SQL experience — built 4 production-style REST API projects independently, end-to-end. Strong debugger: diagnosed and fixed a concurrency race condition (optimistic locking) and N+1 query performance issues in real applications. Remote-ready and self-driven: completed structured online programs (ZTM SQL & Databases, Telusko Spring Boot) and delivered solo projects without supervision. Proven collaborator: co-developed the FarmYukti Android app in a 2-person team, working across frontend and backend layers. Maintains technical documentation on every project — Swagger/OpenAPI reference, Postman collections, and Git version control. 150+ DSA problems solved (GeeksforGeeks). Available immediately; comfortable with remote, asynchronous work.

Skills & Expertise (38)

OOP Intermediate

6.0/10

Years Exp

Troubleshooting Intermediate

6.0/10

Years Exp

Debugging Intermediate

6.0/10

Years Exp

VS Code Intermediate

6.0/10

Years Exp

IntelliJ IDEA Intermediate

6.0/10

Years Exp

Postman Intermediate

6.0/10

Years Exp

Maven Intermediate

6.0/10

Years Exp

GitHub Intermediate

6.0/10

Years Exp

Git Intermediate

6.0/10

Years Exp

Openapi Intermediate

6.0/10

Years Exp

Swagger Intermediate

6.0/10

Years Exp

JSON Intermediate

6.0/10

Years Exp

RESTful Web Services Intermediate

6.0/10

Years Exp

SQL Intermediate

6.0/10

Years Exp

Hibernate Intermediate

6.0/10

Years Exp

Core Java Intermediate

6.0/10

Years Exp

Collections Framework Intermediate

6.0/10

Years Exp

Multithreading Intermediate

6.0/10

Years Exp

Concurrency Intermediate

6.0/10

Years Exp

Exception Handling Intermediate

6.0/10

Years Exp

Java 8+ Streams Intermediate

6.0/10

Years Exp

Lambdas Intermediate

6.0/10

Years Exp

JDBC Intermediate

6.0/10

Years Exp

Spring Boot 3 Intermediate

6.0/10

Years Exp

Spring MVC Intermediate

6.0/10

Years Exp

Spring Security Intermediate

6.0/10

Years Exp

Spring Data JPA Intermediate

6.0/10

Years Exp

Postgresql Intermediate

6.0/10

Years Exp

CSS Intermediate

5.0/10

Years Exp

HTML Intermediate

5.0/10

Years Exp

Firebase Firestore Intermediate

5.0/10

Years Exp

LINUX Intermediate

5.0/10

Years Exp

Data Structures Intermediate

5.0/10

Years Exp

Algorithms Intermediate

5.0/10

Years Exp

Design Patterns Intermediate

5.0/10

Years Exp

MongoDb Intermediate

5.0/10

Years Exp

kotlin Intermediate

5.0/10

Years Exp

Python Intermediate

5.0/10

Years Exp

Work Experience

Developer

TransitBooking

Jan 2026 - Apr 2026

Developed and maintained a production-style ticketing REST API using Spring Boot and Spring MVC, following layered N-Tier architecture (Controller → Service → Repository), built and managed with Maven. Debugging highlight: diagnosed and fixed a double-booking race condition under concurrent requests using @Version optimistic locking — applying Core Java concurrency concepts to real-world failure mode. Secured the application with Spring Security: database-backed authentication, BCrypt password hashing, and role-based access control (ADMIN/USER). Optimized SQL performance: eliminated N+1 queries using JOIN FETCH and @EntityGraph; implemented pagination and sorting via Pageable. Applied the DTO pattern with Jakarta Bean Validation (@Valid) and centralized exception handling via @RestControllerAdvice for clean JSON error responses. Technical documentation: maintained Swagger/OpenAPI API reference, Postman collections for endpoint testing, and Git/GitHub version control with structured commits.

Developer

Customer Relationship Management (CRM) API

Nov 2025 - Dec 2025

Built a production-grade REST API following Domain-Driven Design with strict N-Tier layering and @Transactional boundaries. Implemented stateless JWT authentication with BCrypt hashing and method-level security (@PreAuthorize), restricting destructive endpoints to ADMIN roles. Enforced the DTO pattern to prevent over-posting vulnerabilities; added Jakarta Bean Validation and centralized error handling via @ControllerAdvice. Modeled real sales workflows: paginated and searchable customer endpoints, interaction logging (calls, emails, meetings), deal-stage transitions.

Developer

FarmYukti

Oct 2025 - Jan 2026

Architected a secure farmer-buyer marketplace backend on a normalized 6-table PostgreSQL schema: 15+ REST API endpoints with JWT authentication and role-based access (Farmer/Buyer), average response under 250ms. Built atomic inventory transactions preventing overselling; documented all endpoints with OpenAPI 3.0/Swagger. Engineered proximity-based crop discovery using PostGIS spatial queries (ST_DWithin) with Hibernate Spatial. Cross-team collaboration: co-developed the FarmYukti Android app (Kotlin, Jetpack Compose, Firebase) with a teammate in a 2-person team; later built this backend as its production-grade successor — designing API contracts, DTOs, and authentication flows for mobile clients.