
Web Developer & SEO Specialist | Fast, Mobile-Ready Websites, SaaS Apps & AI-Powered Solutions
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Khairan | High-Speed Web, Super SEO & Sales GrowthはZinn Hubにそのスキルセットを証明し、実績を提出しました。すべての認証済みZinnerは実践的な品質保証レビューに合格しているため、安心して採用できます。
🛡️ 認証済み: October 2026
Are you looking for a modern, high-performance website that loads quickly, supports conversions, and strengthens your brand's online presence?
In modern web business, page load delays and confusing user flows directly hurt conversion rates, while outdated site structures can keep your brand buried beneath competitors in search engine results. When mobile experiences feel clunky or slow, prospective clients quickly move on to competing services.
I work with growing businesses, startups, and digital brands to build fast, reliable, and search-optimised web platforms designed to support long-term growth.
WHAT I DELIVER FOR YOUR DIGITAL PRESENCE:
1. Search Engine Optimisation & High-Speed Web Architecture:
I build websites using clean semantic markup, structured metadata, and performance-first coding practices. By targeting modern Core Web Vitals standards and integrating Google Analytics tracking, your platform gains the speed, measurable data, and technical foundation search engines prioritise.
2. AI Automation, Intelligent Chatbots & API Integrations:
To streamline business operations, I build practical AI solutions including customer support chatbots, automated text and data parsers, and intelligent workflow automations. These are built using robust LLM APIs including the OpenAI API (GPT-4o), Google Gemini API, and Anthropic Claude models, integrated via Python and FastAPI.
3. Secure Cloud Infrastructure & Database Deployment:
Drawing on certified cloud architecture knowledge, I configure Linux server environments, structured PostgreSQL databases, and containerized Docker deployments across platforms like Oracle Cloud to support high uptime, secure data handling, and reliable backend performance.
4. Responsive Web Applications & SaaS Client Portals:
Because mobile traffic represents a critical share of modern digital interactions, every project is built mobile-first. Beyond landing pages, I build custom web systems, SaaS dashboards, and client portals using Next.js on the frontend and high-concurrency Golang or Python microservices on the backend.
PORTFOLIO HIGHLIGHTS & MEASURED OUTCOMES:
The following platforms in my portfolio illustrate the range of technical approaches I apply:
• Tranvas: A comprehensive personal growth ecosystem and web platform unifying habit tracking and financial planning, achieving sub-50ms backend query response times across daily user workflows.
• HandleMyFile: A privacy-first, browser-native document workstation utilising WebAssembly to merge, split, compress, and OCR files directly in the client's browser without server uploads, eliminating 100% of cloud processing overhead.
• SolveMyMedia: A browser-based media processing tool for audio and video, enabling users to convert, compress, and optimise media files locally without uploading to a server, avoiding third-party compute fees.
• Visit Banjarmasin: A digital tourism and cultural exploration web portal built with a mobile-first layout and optimised for high-speed content delivery, achieving sub-200ms page load speeds on mobile networks.
VERIFIED TECHNICAL CREDENTIALS:
• CS50's Introduction to Artificial Intelligence with Python (Harvard CS50)
• Google Analytics Certification (Google)
• Oracle Cloud Infrastructure Certified Architect Associate (Oracle)
• Software Engineer Certificate (HackerRank)
HOW WE WORK TOGETHER:
• Location & Timezone: Based in Jakarta (GMT+7 / UTC+7), with flexible overlapping availability for US, European, and Asian business hours.
• Target Clients: Experienced working with early-stage tech startups, B2B SaaS founders, e-commerce stores, and boutique digital agencies.
• Pricing & Turnaround: Offering both fixed-scope milestone packages (typically 1 to 2 weeks for standard deliverables with 2 included revision rounds) as well as custom-scoped full-stack development and ongoing monthly maintenance.
Send me a message with a brief overview of your project requirements, and I'll outline how we can build the right solution for your business.
このフリーランサーが専門とするテクノロジーと専門知識。
このフリーランサーが利用可能なサービス領域。

Tranvas is a comprehensive personal growth ecosystem designed to eliminate "app switching fatigue." By unifying finance tracking, atomic habits, and daily planning into a single "Modern App," it provides users with a cohesive workspace to manage their lives and maintain long-term focus.
詳細を見る →
HandleMyFile is a privacy-first, browser-native document processing workstation. It allows users to merge, split, compress, convert Office files, and perform OCR text extraction 100% locally in their browser without ever uploading sensitive documents to external servers.
詳細を見る →
SolveMyMedia is an edge-based media processing laboratory for audio and video. It empowers users to convert, compress, trim, and optimize multimedia assets directly in the browser with zero cloud server upload requirements.
詳細を見る →
Visit Banjarmasin is the premier digital tourism and cultural exploration portal for the iconic City of a Thousand Rivers. It offers visitors an immersive guide to river tourism, Banjar cultural heritage, culinary journeys, and Smart City public services.
詳細を見る →すぐに購入できる既製サービス。閲覧、購入、すぐに開始してください。
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