About Me
A brief introduction of my journey as a software engineer.
Who Am I?
Alex Sirait
I am a senior software engineer and indie maker based in Batam, Indonesia. I don’t just write code — I build businesses, with a focus on high-performance architecture and product-market fit. A graduate of State Polytechnic of Batam (A.Md.Kom, GPA 3.96), I have bootstrapped platforms serving 300,000+ users without outside funding.
Today I lead my own studio, SIRAIT Tech, and engineer web solutions in the Digital Transformation team at PT Sat Nusapersada (PTSN). My track record includes CekCV.site, an AI CV/ATS analyzer used by 300,000+ job seekers, and Django WsapTo, an open-source framework trusted by 2,000+ developers. I’ve also mentored 50+ developers and help startups launch secure, scalable MVPs fast.
Beyond the Code
Skills & Expertise
Explore my technical skills across different domains. Click on any category to see the specific technologies and tools I work with.
Backend & API
Designing robust, secure and scalable server-side systems
Web Development
Building modern, responsive web applications
DevOps & Cloud
Shipping and operating systems reliably in production
AI & Machine Learning
Putting LLMs and ML to work inside real products
Web3 & Blockchain
Smart contracts and dApps, with a focus on Sui Move
Technology Stack
Python
Django
Laravel
PHP
Go
Node.js
FastAPI
Express
GraphQLREST APIsWebSocketsgRPCInfrastructure & Tools
PostgreSQL
MySQL
MongoDB
Redis
ElasticSearch
Supabase
Firebase
Postman
SwaggerProfessional Experience
SIRAIT Tech
Lead Software Engineer• Freelance
Lead engineer at my own software studio, working with a team of experts on project management and systems analysis to ship elite software for clients.
TribrataNews Polri
DevOps Engineer• Full-time
Manage and maintain the web infrastructure for TribrataNews Polri and regional Polda sites — ensuring 24/7 availability, optimizing performance, hardening security and scaling for high traffic.
Cryptocium
Lead Developer – Tools Cryptocium• Part-time
Build a suite of crypto trading tools — real-time screener, AI market intelligence, whale/liquidation/price alert bots, portfolio tracking and AI-driven future signals for traders and investors.
PT Sat Nusapersada Tbk (PTSN)
Software Engineer• Full-time
Engineer web-based solutions in the Digital Transformation (DOT) team using Laravel and Django, integrating PostgreSQL/MySQL and APIs to boost efficiency across company operations.
Indie Developer
Indie Maker, CekCV.site• Self-employed
Founded and built CekCV.site, a free AI CV/ATS analyzer that gives job seekers instant scoring, HR-perspective insights and career recommendations — serving 300,000+ users.
Open Source
Initiator, Framework WsapTO• Open Source
Created WsapTO (pip install wsapto), an open-source Python/Django framework that streamlines direct query execution, CRUD and atomic transactions for faster, high-performance applications.
Cladtek
Software Engineer• Full-time
Independently designed and built internal systems (Performance Management, Maintenance, Visitor Management, Training, Internship) with Next.js/TypeScript and CodeIgniter/PHP over PostgreSQL/MySQL.
Self Employed
Indie Software Engineer• Self-employed
Built a diverse range of web-based software solutions as an indie engineer, continuously learning new technologies and documenting every project on GitHub.
Belajarlagi Cohort Bootcamp
Technical Trainer Software Developer• Contract
Trained 25+ aspiring engineers across frontend, backend and databases, building advanced modules on microservices, APIs and Docker while keeping a 90%+ satisfaction rate.
Enigma Camp
Software Engineer Facilitator• Contract
Mentored 50+ bootcamp participants across frontend, backend and databases, guiding capstone projects with detailed code reviews and CI/CD best practices (90%+ satisfaction).
State Polytechnic of Batam
Tech Lead – Project Tracer Study• Project
Led a cross-functional team building the Polibatam Tracer Study platform (tracer.polibatam.ac.id) — React.js/Tailwind front end, Laravel/Node.js back end and MySQL handling large alumni datasets.
State Polytechnic of Batam
Senior Full Stack Web Engineer• Project
Built the Polibatam Tracer Study application front-to-back — responsive React.js/TypeScript UI, Laravel/Node.js back end and MySQL — with dynamic questionnaires and CSV/Excel import-export.
Schneider Electric
Software Developer (Digital Transformation Officer)• Internship
Developed and maintained internal web apps supporting business functions using PHP and C#/ASP.NET Core with Bootstrap/jQuery front ends and SQL Server.
Digital Talent Scholarship
Junior Mobile Programmer• Scholarship
Assisted in designing and building high-performance Android apps with Java and Kotlin, using SQLite for local storage and Figma for intuitive UI/UX.
Pacific Palace Hotel
IT Support (Seasonal - Intern)• Seasonal
Provided technical support to staff — troubleshooting hardware/software, managing service tickets and maintaining IT infrastructure to keep hotel operations running smoothly.
Education & Certifications
State Polytechnic of Batam
Associate's degree (A.Md.Kom), Computer Engineering — GPA 3.96 • 2020 - 2022
Graduated with an A.Md.Kom in Computer Engineering (GPA 3.96). Led the development of the Polibatam alumni Tracer Study web application and was an active volunteer across the ReactJS, Laravel and Web Developer Indonesia communities.
CCNAv7: Introduction to Networks
Cisco Networking Academy • Dec 2021
ASEAN Data Science Explorers 2021
ASEAN Foundation • Nov 2021
Introduction to Data Science
Microsoft • Nov 2021
NDG Linux Essentials
Cisco Networking Academy • Sep 2021
Junior Mobile Programmer (VSGA)
Digital Talent Scholarship — Kominfo • Jul 2021
Soft Skills — Personal Branding
Digital Talent Scholarship — Kominfo • Oct 2021
“Innovate fearlessly, secure meticulously, mentor generously.”
— Alex Sirait