Hello 👋

I'm Abhishek Singh

Backend Engineer — Spring Boot · Backend Database Management · API Design

Java Backend Intern at PolicyBazaar — built production-ready microservices for healthcare consultations, integrating JWT-secured REST APIs, Kafka-based logging, and in-memory caching for high-performance data processing.

I'm a backend engineer focused on building reliable, scalable systems. My work spans API design, data modelling, performance optimization, and distributed systems. Below you'll find a short summary of my experience, skills and selected projects — for the full CV download the resume or visit the CV page.

Download Resume (PDF) View CV GitHub

About

Backend engineer focused on Java and Spring Boot, building secure, scalable APIs and microservices with JWT, JPA/Hibernate, and solid data models on PostgreSQL/MySQL. Hands‑on with caching, Kafka‑based logging, Docker, and AWS. At PolicyBazaar (Aug–Nov 2025), shipped a production consultation microservice and implemented AiSHA health‑data APIs (metrics/graphs and authenticated writes).

Experience

Java Backend Intern — PolicyBazaar.com

Aug 2025 – Nov 2025 • On-site Gurugram

Built a Spring Boot microservice for healthcare consultations enabling online/offline doctor bookings, patient profiling, and payment status tracking.
Integrated secure partner REST APIs with JWT, persisted via JPA, and streamed structured logs to Kafka.
Added robust validation, in-memory caching, and date/time utilities for reliable, timezone-aware processing.
Implemented APIs for AiSHA health data (graphs and POST endpoints) with proper JWT authentication and DB persistence.

AI Researcher — Coding Jr

Jan 2025 – Feb 2025 • Remote

Built a custom Copilot using open Large Language Models and fine-tuned it for a domain-specific use case.

Education

Bachelor of Technology (Information Technology), Dr APJ Abdul Kalam Technical University, Lucknow — 2021–2025

Skills

Java · Spring Boot · Git · Docker · SQL · PostgreSQL · MySQL · AWS · Linux · Scikit-learn · Python · C++ · Machine Learning · Flutter · Data Structures & Algorithms

Selected projects

AiSHA — Your Personal Health Assistant
LIVE

Production-grade biometric analysis using rPPG to derive 8+ health metrics (SpO2, HRV, blood pressure, stress). FastAPI microservice with AWS integration, Kafka logging, and JWT-secured REST APIs with robust error handling.

Contact

Email: abhi620548@gmail.com • GitHub: ABHISHEK0S1INGH