Open to opportunities

Athis J

@athisj

Message

Backend/Platform Engineer specializing in multi-tenant API platforms and production ownership.

India

Message

What I'm looking for

I’m looking for backend or platform engineering roles focused on system design, scalability, and production ownership—where I can own multi-tenant APIs, improve latency with caching, and build AI-enabled processing pipelines using OpenAI.

I’m a Backend / Platform Engineer with 5+ years of experience building high-scale API platforms and SaaS systems, with proven ownership of multi-tenant architectures and performance-critical services (100k+ requests/day). I focus on system design, scalability, and operational excellence—using strong API design, caching strategies, and production-ready admin tooling to measurably improve latency.

My work includes AI-assisted backend automation, integrating OpenAI APIs to transform unstructured documents into structured, confidence-scored backend workflows. From owning multi-tenant logistics systems to shipping payment-enabled platforms and OAuth2-secured admin flows, I consistently lead backend development, define API contracts, and coordinate with frontend and business stakeholders to enable parallel delivery.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Developer

Current

Orange Office Technologies Pvt Ltd

Apr 2025 - Present (1 year 2 months)

Owned end-to-end backend architecture for Shipsoft v2, a multi-tenant logistics CRM, defining tenant isolation strategies and API contracts to enable parallel frontend development. Built and optimized large-scale REST APIs with caching and documentation standards, and implemented OpenAI-powered document processing for logistics rate sheet automation with confidence-based validation.

Django REST Framework REST APIs Python OpenAI API Docker MySQL

PHP Laravel Developer

Fusion Innovative

Aug 2024 - Mar 2025 (7 months)

Built modular Laravel applications and APIs with Vue.js and Slim PHP, including integrations for multiple third-party payment gateways and subscription workflows. Contributed to a React-based QR payment system to support consumer payment flows.

PHP Laravel Vue.Js REST APIs Payment Gateways React API Integration API Development

Web Developer

Gopadma Technologies Pvt Ltd

Jun 2022 - Jul 2024 (2 years 1 month)

Built and scaled Laravel APIs for mobile and consumer platforms, including development of authentication flows and admin systems. Improved backend performance through targeted optimizations to support production platform workloads.

Laravel API Development Authentication Performance Optimization REST APIs OAUTH2 SQL MySQL Redis

Backend Developer

Freelance

Jan 2021 - Apr 2022 (1 year 3 months)

Delivered paid backend and web solutions remotely, including secure payment flows and dynamic content systems for small organizations. Owned implementation from requirements through delivery to meet client integration needs.

Backend Development Payment Integration REST APIs Web Development Content Systems API Integration Database Design

AI-Ready Document API

Personal Project

Jan 2026 - Present (5 months)

Building a B2B AI-powered document processing API with FastAPI to extract structured data from PDFs, emails, and spreadsheets. Designed async APIs and a validation pipeline that integrates OpenAI to generate API-ready formats with confidence scoring for downstream automation.

fastAPI Python OpenAI API Data Extraction API Design