Open to opportunities

Lana User

@lanauser

Message

Full stack developer building high-security Web3 payments and AI-driven automation.

Vietnam

Message

What I'm looking for

I’m looking for a remote or B2B role where I can architect end-to-end high-security Web3 payments, Telegram Mini Apps, and AI integrations—building secure production systems with modern headless architecture.

I’m a full stack developer specializing in high-security web applications, Web3 payment systems, and AI-driven automation. I architect and ship production systems end-to-end—from Telegram Mini Apps to multi-chain crypto and LLM pipelines—with a focus on correctness, security, and measurable business impact.

I have 5+ years shipping production systems, with senior-level depth in security, payments (Web3 + fiat), and AI integration. As the sole engineer at FreeSEO, I scaled SEO automation across 23+ active sites, integrated LLM models for automated competitive analysis and content scoring, and built an asynchronous link-building agent with Playwright that cut manual outreach overhead by 70%.

Across roles, I’ve delivered reliable platforms using Python (FastAPI/Flask), React/Next.js, SQLAlchemy/Celery/Redis, and production-minded DevOps practices. My work includes secure Telegram commerce architecture with encryption and signed access, plus SEO intelligence and lead generation systems that combine async pipelines, data processing, and AI content operations.

Experience

Work history, roles, and key accomplishments

Current

Lead Full Stack Developer

Current

FreeSEO

Aug 2025 - Present (11 months)

Acted as the sole engineer across the full software lifecycle for an SEO automation and analytics ecosystem, scaling PBN infrastructure across 23+ active sites. Built SaaS tools integrating LLMs for competitive analysis/content scoring and implemented an asynchronous Playwright-based link-building agent that reduced manual outreach overhead by 70%.

LLM Integrations OpenAI Anthropic Gemini Playwright Asynchronous Docker WordPress PHP

Full Stack Developer

Lobster Lab

Jun 2025 - Nov 2025 (5 months)

Maintained, audited, and optimized legacy e-commerce systems on PrestaShop 1.6 and PHP 7.1. Improved frontend stability and user experience with JavaScript and Smarty templates, and redesigned product filtering, secure checkout gateways, and local payment integrations.

PrestaShop JavaScript Smarty Multilingual Routing Filtering Payment Integration

Web Developer

Hdcart PTE (Singapore)

Oct 2021 - Jul 2025 (3 years 9 months)

Developed and deployed responsive WordPress themes and high-performance WooCommerce architectures. Transitioned legacy monolithic blogs to headless WordPress with Next.js and Gatsby.js to improve Core Web Vitals to green scores, collaborating in Agile/Scrum sprints and building reusable frontend component libraries.

WordPress WooCommerce Next.js Gatsby Agile Scrum Component Libraries

Webmaster

Rush-Agency

Aug 2023 - Aug 2024 (1 year)

Developed and launched 50+ SEO-friendly landing pages with cross-browser layout compliance. Configured technical SEO tooling, Nginx servers, spam protection layers, and Cloudflare CDN caching rules for high-traffic environments.

Landing Page Development Technical SEO Nginx