I build scalable, secure, and high-performance web applications using modern technologies and clean architecture.
Technologies I Work With
An interview — Q3 2026
— Hassan Javed, Sr. Full-Stack & Blockchain Engineer
The brief
Senior engineer based in Islamabad, working across React / Next.js, Node.js on AWS, audited Solidity, and AI agents. Available for Q3 2026 engagements.
Q.01
I take product ideas and ship them as production software — usually React or Next.js on the front, Node.js on AWS at the back, and audited Solidity when the project needs on-chain rails. Lately a lot of AI agent work too.
Q.02
Founders who have a clear problem and need someone to own delivery. CTOs scaling past their first engineer. Web3 teams that need a contract + frontend + deploy pipeline from one person.
Q.03
Ship what was promised, on the timeline that was agreed. Honest milestone estimates with a 1.5× buffer. Reputation built on under-promise, over-deliver — not on hero work that wrecks the next sprint.
Q.04
Claude tool-use agents for ticket triage, a multi-tenant SaaS on Next.js 14, and a launchpad audit for a token going live in Q3. I write about each of these in the blog.
Freelance — first paid project
Joined Relymer · Full-Stack Engineer
Head of Development
CTO @ Axilaan
Sr. Full-Stack & Blockchain Engineer
Current6 roles, 6 years. Scroll horizontally to walk through the journey — newest first.
→ Seven domains across the modern stack — every technology listed is used in production work today.
IT Services, Software Development, Web Development, Mobile App Development
A complete full-stack journey — from your first HTML tag to deploying real-world web applications.
Presale, Swap, add Liquidity Launchpad UI with admin panel to fianalize presale
Working on something similar? Let's talk specifics.
Get in touch→ Verified recommendations from clients, managers, and teammates I've shipped with across the years.
“I have worked with Hassan Javed as a Full Stack Developer and found him technically strong and reliable. He has experience in React, Node.js, and blockchain-based development including smart contract integration. He delivers work on time and handles tasks with good understanding and ownership. I would recommend him for roles in full-stack and blockchain development. He is a valuable addition to any technical team.”
Hassan is an exceptional developer who delivered our project ahead of schedule. His attention to detail and problem-solving skills are truly impressive. The final product exceeded all our expectations.
I am pleased to recommend Hassan for his exceptional proficiency in React JS, React Native, and Next JS. Hassan collaborated with me on designing and developing my website, delivering remarkable results. His technical skills, attention to detail, and dedication were evident throughout.
Hassan is a very good programmer and he is a hardworking person. He makes sure all the deadlines meet and gave the best quality. Highly recommended.
Hassan is an excellent resource, and a master at embedded programming. He makes sure all the deadlines meet and that also with the highest standards. He is a hardworking and dedicated person. I would recommend and endorse Hassan.
You are a gem of #RelymerGroups — you always do your best and a problem solver. Keep it up with the same motivation.
Hassan consistently demonstrated a strong work ethic and a drive for excellence. Always eager to take on new challenges and go the extra mile to deliver high-quality work within tight deadlines. Attention to detail and precision in coding is truly exceptional.
I have had the privilege of working closely with Hassan as a full stack developer, and I am consistently impressed by his exceptional skills and dedication. His collaborative spirit and willingness to share knowledge have made him a valuable part of our team.
It was a great pleasure working with Hassan. He is not only a nice colleague but also an exceptional team leader — humble, dedicated, and a fantastic team player. His commitment and creativity brought joy to our projects.
Practical write-ups across Web3, React, Next.js, Node.js, MongoDB, and AI automation — distilled from real production work for clients.
Real patterns I use to wire Stripe Billing into multi-tenant SaaS — checkout, webhooks, customer portal, plan changes, dunning, and the gotchas that break apps in production.
What I actually test end-to-end vs unit, how to structure a Playwright suite for a SaaS app, and the patterns that prevent the slow flaky test trap most teams fall into.
When Server Actions are enough, when you need a WebSocket layer, and how to wire Pusher / Soketi / Ably into a Next.js 14 App Router project without breaking SSR.
The 6 generic patterns I use weekly on React + Next.js codebases — typed hooks, polymorphic components, discriminated unions, infer, constraints — without the academic noise.
Real Drizzle patterns from shipping it on 6 production apps in the last year — schema design, type safety, migrations, query patterns, and where Drizzle still falls short of Prisma.
After building RAG pipelines on 4 production apps with three different vector stores, here is the framework I use to decide between pgvector, Pinecone, and the new wave of dedicated vector DBs.
Anthropic Academy · Learn how to use Claude Code effectively in your daily development workflow.
Anthropic Academy · Practical walkthrough of using Claude Code to accelerate your development workflow
Coursera · Blockchain fundamentals & distributed systems
→ Got a project, audit, or hiring brief? Pick any channel below — I respond within 2 hours during work hours.