12+ years · Enterprise & SaaS
Khalid Ahmad
Senior Software Engineer
Senior Software Engineer focused on scalable enterprise and SaaS systems.
Building reliable platforms for global products - from architecture and APIs to cloud and performance at scale.
Remote-ready
Open to international opportunities
Contract or full-time
12+ years shipping production software
International SaaS and enterprise platforms
Search, data, and high-traffic systems
Remote-first collaboration with agile teams
Proof of work
Featured production systems
Real platforms shipped to users — not tutorial demos. Each card links to the live product where available.
AI-powered comic generation app
Turn your daily story into a shareable anime/webtoon comic starring your recurring character.
Role
Technical Founder & Solo Developer
Tech
Expo
React Native
Next.js
Supabase
Inngest
Google Gemini
fal.ai
Vercel
- Built a cross-platform mobile app with Expo and Expo Router
- Designed an async AI generation pipeline with Inngest background jobs
- Integrated Google Gemini with fal.ai fallback for image generation
Pre-Order platform for Indonesian UMKM
A PWA that streamlines the Pre-Order workflow for Indonesian catering and food businesses — secure QRIS upfront payments, automated WhatsApp order handoff, and a merchant revenue dashboard.
Role
Technical Founder & Solo Developer
Tech
React
Vite
TypeScript
Tailwind CSS
Node.js
Express
Prisma
PostgreSQL
Supabase
Midtrans QRIS
WhatsApp Cloud API
React Query
Recharts
PWA
- Secure upfront QRIS payments via Midtrans to lock in customer commitment before prep
- Automated WhatsApp order handoff to the merchant once payment is validated
- Merchant dashboard with daily revenue and top-selling product charts
SaaS for built-environment professionals
The all-in-one platform that supports architects & designers with product & material specs, educational resources & project inspiration.
Role
Software Engineer
Tech
PHP
Codeigniter
MySQL
REST
Mailchimp
AWS S3
AWS Cloudfront
- Migrated from Codeigniter 3 to Codeigniter 4
- Partnered on API contracts with frontend and QA
- Optimized database queries for performance and scalability
Stack
Technologies I ship with
Grouped the way hiring managers scan CVs: backend, frontend, data, and cloud.
Backend
.NET / ASP.NET Core
Node.js
NestJS
GraphQL
REST APIs
Frontend
React
Angular
ASP.NET Core Razor Pages
Data
PostgreSQL
SQL Server
Elasticsearch
Oracle
MySQL
DevOps & Cloud
AWS
Azure
Docker
Jenkins
Kafka
Logos are representative of the ecosystem; exact versions vary by product and team standards.