Let's Build Together

Selim Faiyaz

Full Stack AI Engineer  ·  Next.js  ·  TypeScript  ·  OpenAI AI-First

I build intelligent systems that make your business impossible to ignore.

Most developers build features. I build leverage. Every system I ship is engineered to reduce your costs, accelerate your revenue, and scale without breaking — powered by modern AI where it creates real business value.

Available — 2 project slots open
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Years Delivering
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Products Shipped
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Currently Building
Shipping an AI-powered legal document intelligence platform — Next.js + OpenAI + RAG pipeline. Demo in 2 weeks.
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01 — About

Most developers write code.
I engineer outcomes.

You've felt it before — a developer who was technically impressive but completely missed the point. They built what you asked for, not what you needed. On-spec. Strategically useless.

I work at the intersection of engineering, AI, and business strategy. Before a single line of code, I understand your users, your revenue model, and your growth bottleneck. The result isn't just a product — it's a system designed to perform from day one, with AI embedded where it multiplies value, not just where it's trendy.

I partner with startup founders, SaaS companies, and agencies across the US, UK, Germany, Australia, and Canada — remote, async, and zero hand-holding required.

The question I ask before every project: what does your user need to do to pay you — and how do we make that inevitable?
— Selim Faiyaz, before every engagement
✦
02 — Services

What I build —
framed as what it solves.

01
MVP & Product Launch
From concept to deployed product in weeks, not months. Architecture, build, QA, and launch — so you can focus on users and growth, not DevOps.
Idea → Deployed Product → First Revenue
02
SaaS Platform Engineering
Full-featured, subscription-ready platforms. Auth, billing, dashboards, role management, APIs, admin panels — built on a foundation that handles 10 or 100,000 users without breaking.
Ship once. Scale forever.
03
AI Product Integration
LLM features, GPT-powered workflows, RAG pipelines, intelligent automation, AI agents — capabilities that genuinely reduce operational cost and create defensible product moats.
Features your competitors haven't shipped yet.
04
Performance Rescue
Deep audit, refactor, and architectural rebuild for speed and reliability. Apps that don't collapse the moment real success arrives.
4.8s → 0.9s load. Zero downtime.
05
E-Commerce Engineering
Headless storefronts, optimized checkout flows, custom pricing logic, loyalty systems — engineering more revenue from your existing traffic.
More sales. Same visitors.
06
API & Integration Systems
Stripe, Paddle, CRMs, ERPs, third-party APIs, webhooks, and automation pipelines — your entire stack becomes one cohesive, reliable system.
No more data silos or manual workarounds.
03 — Case Studies

Real problems.
Measurable results.

Case Study 01
B2B SaaS Analytics Dashboard
SaaS · B2B · Data
The Problem
A B2B data startup was generating client reports manually in spreadsheets — 20+ hours per week of error-prone, unscalable work. Clients were frustrated. The business couldn't grow without hiring more people just to run reports.
Next.jsTypeScriptPostgreSQLPrismaStripeTailwind CSS
0 hrs
Weekly reporting time (down from 20+ hrs — fully automated)
100%
Report accuracy (from ~87% manual error rate)
$3k+
New MRR per Enterprise client unlocked via new tier
Case Study 02
Headless E-Commerce Rebuild
DTC · E-Commerce · Shopify
The Problem
Stuck on a slow Shopify template with 4.8s load time. Custom pricing logic was impossible to implement. Flash sale traffic caused repeated crashes. Customers were abandoning at checkout.
Next.jsTypeScriptShopify APITailwind CSSNode.jsMongoDB
0.9s
Page load time (down from 4.8s — 81% faster)
+22%
Conversion rate improvement post-launch
8,000
Concurrent flash-sale users handled — zero downtime
Case Study 03
AI-Powered Legal Document Intelligence
Legal-Tech · AI · SaaS
The Problem
A legal-tech startup needed clients to upload contracts and instantly receive clause extractions, red flags, risk scoring, and plain-English summaries — eliminating $500/hr lawyer review for routine documents.
Next.jsTypeScriptOpenAI APIRAG PipelinePostgreSQLAWS S3
<30s
40-page contract fully analyzed — clause extraction + risk scoring
200+
SMB clients acquired in first 3 months post-launch
Seed
Core AI feature used to secure the startup's funding round
✦
04 — Technology

Every tool chosen
to serve your business.

Next.js + React
Fast, SEO-optimized frontends that load instantly, rank on Google, and convert visitors into customers.
Frontend Excellence
TypeScript
Fewer production bugs. Codebases that scale from 1 developer to 10 without collapsing under their own weight.
Reliability at Scale
Node.js + Express
High-performance APIs and backend services that handle real traffic without performance degradation.
Backend Power
PostgreSQL + MongoDB
The right data architecture — relational integrity or document flexibility, chosen deliberately for your use case.
Data Foundation
OpenAI + LLMs + RAG
AI features that genuinely reduce cost and create user value — not AI for the press release.
Intelligent Features
Stripe + Paddle
Complete revenue infrastructure — subscriptions, one-time payments, billing portals, usage-based billing.
Revenue Infrastructure
Tailwind CSS
Pixel-perfect UI in half the time, fully consistent across every device and screen size.
Design System
AWS + Vercel
Infrastructure that stays live, scales automatically, and doesn't need a 3am incident response call.
Always-On Deployment
05 — Process

How we'll work together —
no surprises, ever.

01
Discovery Call
Free 30-min conversation about your goals, constraints, and what success actually looks like. No pitch.
02
Proposal & Scope
Detailed written proposal within 48 hrs: scope, architecture, timeline, milestones, fixed cost.
03
Build Phase
Weekly staging demos. Daily async updates. You're never left wondering what's happening with your money.
04
QA & Refinement
You test on staging. You give feedback. I refine. Nothing ships until you're confident it performs.
05
Launch & Beyond
Deployed, documented, clean handoff. Then you choose: full handoff, retainer, or as-needed support.
✦
06 — Client Voice

What clients
actually say.

We interviewed 12 developers before working with Selim. Most talked about frameworks. He talked about our users, our revenue model, and our deployment timeline. That's why we hired him — and we haven't looked back.
Sarah M.
Founder, B2B SaaS Startup · 🇺🇸 USA
He took our half-baked idea and shipped a working MVP in 6 weeks. We used it to close our first 3 paying clients before we officially launched. Exceptional communicator. Exceptional engineer.
James K.
Co-Founder, PropTech Startup · 🇬🇧 UK
Our site went from 6 seconds to under 1 second. Bounce rate dropped 38% and form submissions doubled in the first month. The ROI was immediate and completely undeniable.
Laura T.
Marketing Director, E-Commerce · 🇩🇪 Germany
07 — Difference

What you get vs.
what you usually get.

❌   Typical Developer
✗
Asks: "What features do you want?" — builds to spec, misses the point
✗
Disappears for weeks, then sends a Loom at midnight
✗
Works on their machine. Production server? Good luck.
✗
Scope creep shows up as a surprise invoice
✗
Code only they can understand or maintain
✗
Technically correct. Strategically irrelevant.
✦   Working With Selim
✦
Asks: "What does your user need to do to pay you?" — strategy first, always
✦
Weekly demos, staging previews, async daily updates
✦
Deployed, production-tested, monitored from day 1
✦
Detailed scope document upfront — zero surprises, ever
✦
Clean, documented code your next developer will thank you for
✦
Every technical decision tied directly to a business outcome
✦
08 — Let's Build

Ready to build
something real?

2 project slots currently available.

The best way to start is simple — tell me what you're building, your rough timeline, and a budget range. No lengthy RFPs. No NDAs before hello. Just a real conversation between two professionals.

→ Send a Message Book Free 30-Min Call
✉
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