Service
Powerful Backend Engineering
Secure, scalable systems tailored for business-critical operations.
Backend Developer
Hello World, I’m Ohansyah.
I build high-performance backend systems and scalable APIs that bridge complex business logic with smooth user experiences.
Available for freelance and collaboration opportunities
Ready To Tackle Your Challenges
From bug fixing to launching complex API architecture, every solution is optimized for performance, security, and long-term growth.
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Web Development
Responsive and modern web experiences that support real business outcomes.
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Seamless API Integration
Reliable integration between platforms with secure and efficient API flows.
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Custom Software Solutions
Tailored systems built around your unique process and product needs.
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Performance Optimization
Refactoring and architecture improvements to speed up APIs and reduce load.
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Bug Fixing & Troubleshooting
Fast diagnosis and pragmatic fixes for production and development issues.
Projects
Showcasing Excellence and Innovation
Project 01
eDot eShop
eDOT/eSHOP is a B2B2C e-commerce application designed to streamline and enhance the FMCG activities between distributors and their network of outlets, extending all the way to end customers.
- Scalable Order Processing System
Built a robust system for managing orders, invoicing, and payments with high scalability. - Secure API Integration
Integrated payment gateways and logistics services with secure, efficient API endpoints. - Elasticsearch-Powered Search Functionality
Integrated Elasticsearch to enable lightning-fast, full-text search capabilities across product catalogs, improving user experience with accurate and quick search results.
Project 02
SRC: MyAYO & AYO Kasir
AYO Kasir is a comprehensive digital ecosystem connecting wholesale partners, convenience stores, and customers. I contributed as a backend engineer to modernize store operations and build reliable services for both seller and customer workflows.
- Advanced Point-of-Sale (POS) System
Built core backend services for efficient in-store transactions, inventory tracking, and sales reporting. - Secure & Scalable Infrastructure
Built and maintained high-concurrency POS APIs for peak transactions, and integrated payment and delivery providers through robust RESTful endpoints. - Inventory & Downline Management
Developed multi-tier stock transfer flows and owner/store stock-switch logic with real-time supervisory inventory visibility. - Digital Store Operations
Digitized manual daily closing and built historical tracking for stock and payment discrepancies at national scale. - Automated Replenishment
Developed order recommendation and approval workflow logic to automate inventory requests and improve stock availability.
Project 03
Online Store (Open Source)
Lightweight online storefront built with the modern TALL stack (TailwindCSS, Alpine.js, Laravel, and Livewire) to deliver an elegant, responsive shopping experience with a user-friendly admin CMS. I contributed on the backend side to build reliable catalog, content, and inventory workflows for both customer and admin operations.
End User Experience
- Intuitive product search with category filters.
- Engaging banner slider for promotions.
- Dynamic product displays for popular and discounted items.
- Organized category and product listing.
Admin CMS Capabilities
- Dashboard with real-time overview of banners, products, categories, and sections.
- Fully manageable product catalog and customizable product sections.
- Category management for organized browsing.
- Banner control with dynamic carousel updates.
Project 04
Cashier Simple POS (Open Source)
Web-based POS system built with Laravel TALL stack and Jetstream, designed for simple but powerful order and product management with multiuser support in a single store.
- Transactional Backend
Implemented checkout, order summary, detailed order lifecycle, and receipt generation (print/PDF/image). - Store Management Modules
Built master product/category services and dashboard metrics for operational visibility. - Analytics & Multiuser Support
Added order charts and role-based multiuser flows to support daily store operations.
Project 05
Telegram Healthy Assistant Bot
A simple and extensible Telegram bot written in Go to assist users with nutrition insights, packaging OCR, and healthy-living utilities. Built with clean architecture and modular components for easy deployment and maintenance.
- Image OCR + AI Pipeline
Integrated OCR flow with Gemini-powered interpretation for packaging and nutrition insights. - Telegram Bot Integration
Implemented command and message workflows with modular bot handlers. - Resilient Runner
Added self-restarting execution and clean project structure for reliable operations.
Project 06
YouTube Audio Proxy
A lightweight, high-performance Go web application that proxies YouTube audio streams for mobile-friendly background listening without ads and without storing files on the server.
- Direct Stream Proxying
Pipes audio from source to client using efficient stream copy with minimal memory overhead. - Background Playback
Implemented Media Session API support for seamless mobile background audio. - Privacy & Production Readiness
No persistent file/log storage, with template caching and timeout handling for stable runtime behavior.
My Story and Approach
Home Lab: Android TV Box to Gemini AI Server
A practical experiment in cross-compilation, ARM constraints, and API efficiency.
Reinventing the Wheel Isn’t Always Bad
Why rebuilding in your lab can sharpen architecture instincts and engineering depth.
Improving API Performance in Laravel
Using Guzzle concurrent request patterns to reduce latency across service calls.
Handling Race Conditions in Laravel
Applying pessimistic locking to protect transactional consistency in production.
How We Build Together
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1Initial Consultation
Understand your goals, constraints, and timeline.
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2Tailored Proposal
A focused technical plan with transparent scope.
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3Project Kickoff
Milestones, delivery rhythm, and communication channel setup.
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4Development
Implementation with regular updates and iterative feedback.
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5QA & Review
Testing, validation, and refinements before release.
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6Launch & Support
Go-live support and practical post-launch improvements.