Neeraj Kumar

Backend Engineer | Python · FastAPI · Celery · PostgreSQL · Docker

Patna, Bihar, India · neerajkr1210@gmail.com · github.com/Ryuk-me · linkedin.com/in/neeraj-kumar-5178281b0

Backend Engineer with 2+ years of production experience building Python REST APIs, asynchronous Celery worker pipelines, and multi-database integration platforms. At Datachecks, optimized data comparison engine performance, resolved Celery execution bottlenecks, integrated 10+ enterprise database and analytics connectors, and delivered a complete air-gapped deployment on bank-owned RHEL infrastructure. Core stack: FastAPI, Celery, PostgreSQL, Redis, SQLAlchemy, Docker, RabbitMQ.

Skills

Languages

Python, TypeScript, SQL, C++

Backend

FastAPI, Celery, SQLAlchemy, REST APIs, aiohttp, Redis Pub/Sub, CLI Tooling

Databases

PostgreSQL, Redis, MongoDB, MSSQL, MySQL, Oracle, Sybase IQ, Sybase ASE

Analytics

Databricks, Presto, Trino, BigQuery, Snowflake

Infrastructure

Docker, Kubernetes, Helm, RabbitMQ, Alembic, GitHub Actions, RHEL

Experience

Software Development Engineer I (SDE-I)

Datachecks (PLOUTOS AI TECHNOLOGIES PRIVATE LIMITED)

India · Remote

Dec 2023 – Present

Engineered database connectors for MSSQL, MySQL, Oracle, Databricks, Sybase IQ, Sybase ASE, Presto, and Trino, expanding platform data source coverage to 10+ targets.
Optimized large-dataset comparison engine by replacing hash-based diffing with memory-efficient in-process diffing, reducing execution time and memory overhead.
Designed per-column diff-threshold logic to maximize data difference detection coverage under constrained compute budgets.
Diagnosed and resolved Celery worker failures in long-running validation and comparison pipelines, significantly improving job completion reliability.
Delivered complete offline deployment on air-gapped RHEL bank infrastructure with zero internet access, enabling isolated enterprise-grade production installation.

Python Developer

9AI

India · Remote

Oct 2023 – Nov 2023

Developed WebSocket API endpoints enabling real-time bidirectional communication between clients and backend services.
Implemented Redis Pub/Sub messaging patterns to support low-latency event-driven data distribution across services.
Authored MongoDB aggregation pipeline queries to power analytics dashboards and backend data reporting.

Projects

Torrent-Api-py

FastAPI · Python · Web Scraping · 400+ GitHub Stars

Built a FastAPI service normalizing torrent search and metadata across 15+ providers; accumulated 400+ GitHub stars with active open-source community adoption.

DogeTheBot

Node.js · WhatsApp Automation · Bot Development

Developed a WhatsApp automation bot with command routing, group management, media processing, and sandboxed code execution.

UMS-Api

FastAPI · Python · API Design · Reverse Engineering

Reverse-engineered a session-based university portal to expose structured FastAPI REST endpoints for student records and placement workflows.

Education

Master of Computer Applications (MCA)

Lovely Professional University · Phagwara, Punjab

Aug 2022 – Jun 2024 · CGPA: 8.30

Bachelor of Computer Applications (BCA)

Lalit Narayan Mishra Institute of ED and SC · Patna, Bihar

Aug 2019 – Jul 2022 · CGPA: 8.21

Neeraj Kumar

Backend Engineer | Python · FastAPI · Celery · PostgreSQL · Docker

Patna, Bihar, India · neerajkr1210@gmail.com · github.com/Ryuk-me · linkedin.com/in/neeraj-kumar-5178281b0