Abu Sufyan | Full-Stack Developer & Technical SEO

Profile

Full-stack developer and solo maker from Pakistan with a focus on building fast, privacy-first web tools that rank on Google and serve real professional needs. Founder of WebToolkit Pro — a 150+ tool developer ecosystem — and a growing network of niche calculator sites with verified organic rankings. Specialises in Next.js, technical SEO, and shipping products that work without a team.

Experience

Founder & Lead Engineer

WebToolkit Pro · wtkpro.site

May 2024 — Present

Architected and shipped a 150+ tool developer ecosystem using Next.js 14, TypeScript, and Vercel Edge — all tools run 100% client-side with zero server-side data processing.
Implemented programmatic SEO with dynamic JSON-LD schema, structured data, and topical hub architecture — driving organic rankings across 87 blog posts and 160+ tool pages.
Built and deployed 4 satellite sites (severancecalculator.xyz, tradeconvert.pro, quranhub.xyz, slabreachcalculator.site) — all ranking within weeks of launch using a submodule-based Git architecture.
Achieved position 2.1 on Google for "quran tracker online" and position 4.1 for "quran reading tracker" within 6 weeks of launch with zero paid backlinks.
Designed and implemented a 3-tier pricing model (Free / Team Pro / Air-Gapped Enterprise) and a Tauri v2 desktop app CI/CD pipeline on GitHub Actions.

Lead Engineer

Netizen Labs

2024 — Present

Led full-stack development of client web applications with a focus on performance, Core Web Vitals, and SEO-optimised architecture.
Developed SeveranceCalculator.xyz — a multi-jurisdictional HR tool covering 8 countries with official 2025 labor law formulas, including UAE Federal Decree-Law No. 33 and UK Employment Rights Act 1996.
Built TradeConvert.pro — 17 NIST-verified construction calculators (pressure, voltage drop, conduit fill, concrete estimator) with print-friendly output and zero external dependencies.

Freelance Full-Stack Developer

Independent · Upwork & Fiverr

2023 — Present

Delivered full-stack web applications, SEO audits, and technical consulting for international clients across the US, UK, and UAE markets.
Specialised in Next.js performance optimisation, Core Web Vitals remediation, and structured data implementation for e-commerce and SaaS clients.

Projects

WebToolkit Pro

wtkpro.site

150+ free developer tools — JSON formatter, JWT decoder, regex tester, password generator. Client-side, privacy-first, Next.js 14.

Next.js TypeScript Vercel Technical SEO

Severance Pay Calculator

severancecalculator.xyz

Global HR tool covering 8 countries. Official 2025 labor law formulas. Ranked position 2 on Google within 3 weeks.

HTML/CSS/JS SEO Schema markup

TradeConvert Pro

tradeconvert.pro

17 construction calculators — voltage drop, concrete, lumber, roofing. NIST-verified formulas. NEC 2026 standards.

Static HTML NIST NEC

SLA Breach Calculator

slabreachcalculator.site

Free B2B tool for IT managers and procurement teams to calculate service credits and delivery penalties from SLA breaches.

B2B Niche SEO Vanilla JS

Skills

Frontend

Next.js 14 / React
TypeScript
Tailwind CSS
Vanilla HTML / CSS / JS
Core Web Vitals
PWA / Service Workers

Backend & Infra

Node.js
Supabase / PostgreSQL
Vercel Edge / Serverless
GitHub Actions CI/CD
Tauri v2 (Desktop)
REST API design

SEO & Growth

Technical SEO
JSON-LD / Schema markup
GEO / AI search optimisation
Google Search Console
Programmatic content
Niche site architecture

Education

Associate's Degree, Computer Science

Lahore Leads University — City Campus

Nov 2024 — Jun 2026

Grade: A+ · Activities: Technical Support for faculty · Skills: React.js, Python, full-stack development