Abhishek Tiwari

Software Development Engineer

Bengaluru, India 2+ yrs exp 84 · Excellent

About

Results-driven Software Development Engineer with 1+ year of production experience designing, building, and operating distributed backend systems and RESTful microservices using Java and Spring Boot. Proven ability to architect scalable distributed platforms, automate CI/CD pipelines, and solve complex, ambiguous problems through data-driven approaches and rigorous metric monitoring. Experienced with relational and NoSQL data modeling, event-driven streaming, and cross-functional software delivery at scale. Expanding expertise in cloud-native services and AI/ML integration, aligned with Amazon’s mission to build globally scalable, mission-critical technology platforms.

Skills & Expertise (46)

Spring Boot Intermediate

6.5/10

Years Exp

Spring Core Intermediate

6.5/10

Years Exp

RESTful API Design Intermediate

6.5/10

Years Exp

Java Intermediate

6.5/10

Years Exp

JSON Intermediate

6.0/10

Years Exp

JPA Intermediate

6.0/10

Years Exp

Hibernate Intermediate

6.0/10

Years Exp

Git Intermediate

6.0/10

Years Exp

Postgresql Intermediate

6.0/10

Years Exp

Spring MVC Beginner

5.5/10

Years Exp

Microservices Beginner

5.5/10

Years Exp

REST Beginner

5.5/10

Years Exp

Relational schema design Beginner

5.5/10

Years Exp

Query Optimisation Beginner

5.5/10

Years Exp

HTTP Beginner

5.5/10

Years Exp

Openapi Beginner

5.0/10

Years Exp

Unit Testing Beginner

5.0/10

Years Exp

Postman Beginner

5.0/10

Years Exp

Swagger Beginner

5.0/10

Years Exp

Gradle Beginner

5.0/10

Years Exp

Data Modeling Beginner

5.0/10

Years Exp

ETL Beginner

5.0/10

Years Exp

ELT Beginner

5.0/10

Years Exp

XML Beginner

5.0/10

Years Exp

HTML5 Beginner

5.0/10

Years Exp

CSS Beginner

5.0/10

Years Exp

React.js Beginner

5.0/10

Years Exp

Azure Beginner

5.0/10

Years Exp

Python Beginner

5.0/10

Years Exp

Event-Driven Architecture Beginner

5.0/10

Years Exp

MSSQL Beginner

5.0/10

Years Exp

Docker Beginner

5.0/10

Years Exp

AWS Beginner

5.0/10

Years Exp

Scrum Beginner

5.0/10

Years Exp

GCP Beginner

5.0/10

Years Exp

Jenkins Beginner

5.0/10

Years Exp

Maven Beginner

5.0/10

Years Exp

Agile Beginner

5.0/10

Years Exp

Prompt Engineering Beginner

4.0/10

Years Exp

LLMs Beginner

4.0/10

Years Exp

ELK Stack Beginner

4.0/10

Years Exp

Generative AI Beginner

4.0/10

Years Exp

RAG Beginner

3.0/10

Years Exp

Distributed Systems Kafka J2EE

Work Experience

Java Backend Developer — Freelance

Bharat Krishi Mitra Pvt. Ltd.

Aug 2025 - Present

Designed and shipped a production-grade RESTful API platform using Java and Spring Boot, covering end-to-end workflows for product management, user authentication, cart, orders, and payment processing. Architected a modular, scalable backend with layered service design and centralised error-handling middleware, enforcing consistent API contracts and improving cross-functional integration reliability. Implemented JPA/Hibernate ORM with PostgreSQL, designing normalised relational schemas with optimised indexes and efficient query patterns to support future data-pipeline and ETL integration at scale. Authored complete Swagger/OpenAPI documentation and collaborated with frontend engineers to align API contracts, reducing integration defects and accelerating delivery across cross-functional teams. Modelled domain-specific inventory entities enabling accurate data modeling and future cross-border product catalog expansion.

Software Developer

Rupenet Payments

Aug 2024 - Jul 2025

Built and operated production RESTful APIs for a live UPI payment platform using Java 11 and Spring Boot, handling merchant registration, dynamic QR code generation, and high-concurrency transaction processing. Architected a distributed backend system with Spring Core dependency injection, layered service design, and JPA-managed entities on PostgreSQL, ensuring persistent and fully auditable transaction records. Applied J2EE multithreading and concurrency patterns to optimise API throughput under high load, measurably reducing response latency for concurrent payment transactions. Secured API communication with token-based authentication, header validation, and fintech-grade security standards for sensitive payment data; documented all endpoints in Swagger/OpenAPI. Built and consumed RESTful web services in JSON and XML, maintaining interoperability with third-party payment gateways and internal microservices.