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JAVA BACKEND DEVELOPER · 3+ YEARS

Building systems that scale.

I'm Abhisek Kumar Panda, a Java Backend Developer focused on building reliable APIs, microservices, distributed systems and real-time applications.

My work spans Spring Boot, Kafka, RabbitMQ, Redis, databases, security, JVM performance and production engineering.

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abhisek@backend ~
01 class BackendEngineer {
02    String role = "Java Developer";
03    String[] stack = {
04      "Java",
05      "Spring Boot",
06      "Kafka",
07      "Redis",
08      "Microservices"
09   };
10    boolean learning = true;
11    boolean building = true;
12 }
EXPERIENCE 3+ Years
REAL-TIME SYSTEM 1000+ Devices
3+ YEARS EXPERIENCE
1000+ DEVICES TRACKED
28% RELIABILITY IMPROVEMENT
20% LATENCY REDUCTION

01 / ABOUT

Engineer first. Problem solver always.

I'm a Java Backend Developer with 3+ years of professional experience developing production systems using Java, Spring Boot, Spring Cloud and Microservices.

My primary focus is backend engineering — designing APIs, asynchronous workflows, distributed services and real-time systems that remain reliable under production workloads.

I've worked with technologies such as Kafka, RabbitMQ, Redis, WebSocket, SSE, PostgreSQL, MongoDB, Docker and Linux.

Alongside backend development, I've explored JVM performance engineering, observability, RAG systems and AI-powered semantic search.

ENGINEERING FOCUS
01 Backend Architecture
02 Distributed Systems
03 Real-Time Applications
04 Performance Engineering
05 Production Reliability
06 System Design

02 / EXPERIENCE

Building systems in production.

JUN 2023 — PRESENT

ASICZEN TECHNOLOGIES

Software Developer

Working primarily on backend engineering, production systems, distributed services, device management and real-time applications.

01 AZTRACK

GPS Tracking & Real-Time Systems

Developed production backend services using Java 17, Spring Boot, Spring Cloud, Microservices and Eureka. Built asynchronous and real-time workflows for GPS and device management.

Java 17 Spring Boot Microservices Kafka RabbitMQ Redis WebSocket SSE
02 PERFORMANCE

Reliability & Performance Engineering

Applied multithreading, caching and JVM optimization techniques, contributing to a 28% improvement in system reliability and 20% reduction in latency.

JVM Multithreading Redis JMeter Performance Tuning
03 DEVICE MANAGEMENT

System Design & Production Engineering

Prepared FSDs, translated business requirements into technical workflows and coordinated a 7-member team across backend, frontend, QA and deployment activities.

FSD Docker Jenkins NGINX SSL/TLS Linux SonarQube
04 DOCUMENT MANAGEMENT

Document Management & RAG

Built backend services using Python, FastAPI, SQLModel, PostgreSQL, Celery and Redis. Integrated a RAG-based chatbot using Qdrant and MinIO.

Python FastAPI PostgreSQL Celery Redis Qdrant MinIO Docker

03 / PROJECTS

Things I've built & explored.

PROJECT / 01 ENGINEERING LAB

PERFORMANCE ENGINEERING

JVM Performance Lab

A performance engineering environment designed to understand JVM behavior, garbage collection, memory utilization, thread contention and application throughput.

Java Spring Boot G1GC Docker Prometheus Grafana JMeter
Spring Boot
→
JVM
→
G1GC
→
Metrics
→
Grafana
PROJECT / 02

AI / BACKEND

Document Management System

Document processing platform with RAG-based semantic search and chatbot capabilities.

FastAPI PostgreSQL Qdrant MinIO Celery Redis
PROJECT / 03

REAL-TIME SYSTEM

AZTRACK

GPS tracking platform supporting real-time device communication and scalable backend processing.

Spring Boot Kafka RabbitMQ Redis WebSocket SSE

ENGINEERING MINDSET

I don't just ask "does it work?"

01 Can it scale?
02 What happens under load?
03 What happens when a service fails?
04 Can we observe the system?
05 Can the design be simplified?

04 / SKILLS

My engineering toolbox.

01 Languages
Java Python SQL Data Structures Algorithms
02 Backend
Spring Boot Spring Cloud Microservices REST APIs Maven
03 Distributed Systems
Kafka RabbitMQ Redis WebSocket SSE Event Driven Architecture
04 Databases
PostgreSQL MySQL MongoDB Elasticsearch
05 DevOps & Infrastructure
Docker Jenkins NGINX Linux SSL/TLS AWS
06 Security & Testing
Spring Security JWT Keycloak OAuth JUnit Mockito Playwright SonarQube
07 AI & Data
RAG Qdrant MinIO FastAPI Celery
08 Engineering
System Design HLD LLD Design Patterns Observability Performance Engineering

05 / JOURNEY

From fundamentals to production systems.

2016 — 2020

Engineering Foundation

B.Tech in Electrical and Electronics Engineering at Gandhi Engineering College.

2020 — 2023

Software Engineering

Built the foundation in programming, Java, problem solving and software development.

2023 — PRESENT

Production Engineering

Working with backend systems, microservices, distributed architecture and production workloads.

DSA 150+ LeetCode Problems Continuous algorithmic problem solving
RECOGNITION Google Crowdsource Contributor Certified contributor — 2020
COMPETITION State-Level C-MARATHON 2019 participant
FOCUS Product Engineering Backend · Systems · Performance

06 / EDUCATION

Gandhi Engineering College

B.Tech. in Electrical and Electronics Engineering

PERIOD Jul 2016 — Jun 2020
CGPA 8.27
LOCATION Bengaluru, Karnataka

07 / CONTACT

Let's build something useful.

I'm interested in backend engineering, distributed systems, product development and challenging technical problems.

abhitz1234@gmail.com
LinkedIn LeetCode Bitbucket Resume