Daniel.
Open to backend & Python roles

Python backend engineer for systems that hold up under real load.

4+ years designing and shipping backend services with Python & FastAPI. I've independently built and run a production ERP handling fuel, payroll, and live GPS tracking for a fleet of 50–150 trucks — the kind of system where a rounding error costs someone real money.

View my work Get in touch

4+

Years experience

150

Trucks managed live

5+

Systems shipped

system_overview.svg

live
React Client HTTPS Razorpay / Maps webhooks FastAPI JWT · RBAC · REST MySQL reconciliation data Docker containers GPS Feed live tracking

01 · ABOUT

Summary

I'm a Python backend developer with 4+ years of professional experience, working mainly in FastAPI alongside Node.js/Express.js where a project calls for it. My focus is services that don't quietly get things wrong — fuel numbers that reconcile, payroll that locks correctly, APIs that fail loudly instead of silently.

My flagship project is a Transport ERP I designed and built independently, running the full trip-to-payroll lifecycle for a fleet of 50–150 trucks: diesel reconciliation, driver payroll, live GPS tracking, and audit-safe month-end corrections. Beyond that I've shipped a multi-role job portal, a POS system, and a hospital payment platform with Razorpay integration.

Day to day: MySQL schema design, JWT/RBAC auth, Docker for consistent deployment, and REST APIs built to be boring in the best way.

02 · SKILLS

What I work with

Languages & Frameworks

Python, FastAPI, Node.js, Express.js, JavaScript (ES6+), React.js

APIs & Auth

REST APIs, JWT Authentication, RBAC, OAuth 2.0, Webhooks

Data & Infrastructure

MySQL, Database Design, Docker, Git & GitHub

Integrations

Razorpay, Google Maps JS/Directions/Geocoding APIs, GPS Tracking

Systems & Practices

ERP & Payroll Systems, Python Automation, MVC, Agile, SDLC

Frontend (working knowledge)

React.js, HTML5, CSS3, Tailwind CSS, Bootstrap, Material UI

03 · EXPERIENCE

Where I've built

Software Engineer

May 2022 — Present

Jorim Technology Solutions Pvt. Ltd, Chennai

  • ▸ Independently designed and built a Transport ERP managing 50–150 trucks end to end — trip lifecycle, diesel reconciliation, and driver payroll — with Python powering the entire backend.
  • ▸ Built backend services and automation scripts in Python for data validation and reconciliation; developed RESTful APIs with FastAPI and Node.js/Express.js.
  • ▸ Implemented JWT authentication and RBAC; optimized MySQL queries and schemas for API performance and data consistency.
  • ▸ Integrated Razorpay (signature verification, webhooks) and Google Maps JavaScript, Directions, and Geocoding APIs for GPS tracking and routing.
  • ▸ Built reusable middleware for validation, error handling, logging, and rate limiting; containerized services with Docker in an Agile workflow alongside React.js frontend teams.

04 · PROJECTS

Selected work

Flagship Solo-built

Transport ERP System

End-to-end ERP for a fleet of 50–150 trucks. Python-based full-to-full tank measurement, odometer-based fuel allocation, month-end validation, and payroll locking, with live GPS tracking and a finance reporting module.

Python FastAPI React.js MySQL Docker
Web app

Job Portal Application

Multi-role job portal with secure JWT-based login, role-based route protection, and REST APIs for postings, applications, and user management.

React.js Node.js
Web app

POS System

Sales and inventory management system with real-time billing, stock tracking, and automated sales reporting through backend APIs.

React.js Node.js MySQL
Web app

Hospital Payment Management System

Razorpay integration with signature verification and webhooks, API rate limiting, and Google Sheets sync via OAuth 2.0.

React.js Node.js

05 · CONTACT

Let's build something reliable.

Open to backend and full-stack roles where Python and FastAPI do the heavy lifting. Fastest way to reach me is email — I'll reply from there.

Emaildani17elc@gmail.com

Phone+91 87549 73205

LinkedIn/in/daniel-elcin

LocationChennai, India