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toseef434

Toseef Hasan

@toseef434

Senior Full Stack Developer NodeJS NestJS React SaaS Architect

Pakistan
English
About me
Hi, I’m Toseef Hasan, a Senior Full-Stack Engineer & Tech Lead with 7+ years of experience building scalable SaaS platforms, marketplaces, and backend-heavy systems for startups and international clients. I specialize in Node.js, NestJS, React, and Next.js, with a strong focus on clean architecture, performance, and long-term scalability. I’ve led development teams, designed microservices-based systems, integrated secure payment flows (Stripe & subscriptions), and delivered production-grade applications across fintech, healthcare, and Web3-enabled platforms.... Read more

Skills

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toseef434
Toseef Hasan
Offline • 
Average response time: 1 hour

See my services

API & Integrations
I will integrate stripe, paypal or payment gateway on your website
From$100 / projectMore details
Bug Fixes
I will fix bugs and errors in your react nextjs, nodejs app fast
From$50 / projectMore details

Portfolio

Work experience

Senior Tech Lead & CTO

Code Encoders • Full-time

May 2023 - Present • 3 yrs

Led architecture, development, and delivery of complex web, mobile, SaaS, and Web3 platforms. Owned system design, technical decisions, team leadership, and client communication across multiple high-impact products. 𝗞𝗲𝘆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀 ● Led cross-functional frontend, backend, and mobile teams. ● Designed scalable systems using Node.js, NestJS, PostgreSQL, MongoDB, and Redis. ● Architected microservices-based platforms (10+ services) with API Gateway and event- driven patterns. ● Integrated Stripe, Stripe Connect, Persona KYC, Web3Auth, IPFS, and blockchain smart contracts. ● Deployed and maintained production systems on AWS with CI/CD pipelines.

Senior Frontend Lead

Digital Aimz Limited • Full-time

Apr 2019 - May 2023 • 4 yrs 1 mo

Progressed from intern to frontend lead, contributing to and leading development of high-traffic, SEO-driven platforms and full-stack applications. 𝗞𝗲𝘆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀 ● Led frontend development using React.js, Next.js, WordPress, and modern UI frameworks. ● Redesigned legacy systems for improved UX, performance, and SEO. ● Mentored junior developers and led small frontend teams. ● Built admin dashboards and collaborated closely with backend teams.