You will get a senior full-stack web build with Next.js, Python, and AWS
Project details
I'm a Principal Engineer with 12+ years building production web platforms. 3 years at Apple (London and California) shipping infrastructure for 500M+ users, then founded Setzzy — an AI and real-time SaaS scaled to $1.45M in funding across 20+ countries and exited in Q1 2026.
I build modern, production-grade web apps end-to-end. Not a notebook demo, not a junior learning on your project — a senior engineer who can architect, ship, and harden a real product.
Stack: Next.js (App Router), React, TypeScript, Tailwind, shadcn/ui, tRPC. Node, Python, FastAPI, NestJS for backend. PostgreSQL with partitioning and replication, Redis, pgvector. Stripe Connect, multi-tenant SaaS, full internationalization. AWS, Kubernetes, Docker, Terraform, GitHub Actions.
What sets this apart: I have shipped 40+ SaaS, automation, and e-commerce platforms for clients across retail, fintech, and consumer brands over 7 years of consulting, plus 0-to-1 building a funded AI SaaS that exited. The work is grounded in what survives in production at scale.
Best fit: founders and teams who need a real engineer to deliver a feature or product in 2-8 weeks.
I build modern, production-grade web apps end-to-end. Not a notebook demo, not a junior learning on your project — a senior engineer who can architect, ship, and harden a real product.
Stack: Next.js (App Router), React, TypeScript, Tailwind, shadcn/ui, tRPC. Node, Python, FastAPI, NestJS for backend. PostgreSQL with partitioning and replication, Redis, pgvector. Stripe Connect, multi-tenant SaaS, full internationalization. AWS, Kubernetes, Docker, Terraform, GitHub Actions.
What sets this apart: I have shipped 40+ SaaS, automation, and e-commerce platforms for clients across retail, fintech, and consumer brands over 7 years of consulting, plus 0-to-1 building a funded AI SaaS that exited. The work is grounded in what survives in production at scale.
Best fit: founders and teams who need a real engineer to deliver a feature or product in 2-8 weeks.
Programming Languages
JavaScript, Python, TypeScriptWhat's included
| Service Tiers |
Starter
$3,500
|
Standard
$9,000
|
Advanced
$18,000
|
|---|---|---|---|
| Delivery Time | 14 days | 30 days | 60 days |
Number of Revisions | 0 | 0 | 0 |
Number of Pages | 5 | 15 | 40 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Frequently asked questions
About Yunus
Senior Full-Stack, AI & Mobile Engineer | Ex-Apple | Next.js, LLMs
Izmir, Turkey - 11:19 am local time
What I build
— AI and LLM Systems
Production RAG pipelines with pgvector, Pinecone, and custom re-rankers. Multi-agent workflows with LangChain, LangGraph, AutoGen, CrewAI. OpenAI, Anthropic Claude, Google Gemini, and open-source LLMs. Voice AI pipelines using Whisper, OpenAI Realtime, and ElevenLabs. Agent evaluation, prompt engineering, model routing, cost optimization, and production observability.
— Full-Stack Web
Next js (App Router), React, TypeScript, Tailwind, shadcn ui, tRPC. Node js, Python, FastAPI, NestJS. REST, GraphQL, gRPC. PostgreSQL with partitioning and replication, Redis, MongoDB, pgvector. Multi-tenant SaaS, Stripe Connect, and full internationalization.
— Mobile
Native iOS using Swift, SwiftUI, UIKit, Combine, and Core Data, plus React Native for cross-platform delivery.
— Real-Time and Voice
WebRTC, Socket io, sub-second turn-taking across cross-border sessions. Kafka, Redis Pub/Sub, SQS, BullMQ, and Temporal for async job orchestration.
— Cloud and DevOps
AWS (ECS, RDS, Lambda, S3, Bedrock), Kubernetes, Docker, Terraform, and GitHub Actions. Sustained 99.9% uptime under thousands of concurrent users at Setzzy.
Selected impact
— Setzzy (Founder and CEO): Built 0 to 1, raised $1.45M, scaled to 20+ countries, 2,800+ early-access signups, strategic exit Q1 2026. Reduced expert sourcing from days to under 60 seconds with a proprietary AI matching engine. Cut time-to-payment by 70% with a milestone-based Stripe Connect escrow.
— Apple (Software Development Team Manager, California): Reduced deployment errors 60% and accelerated release cycles 40% across teams serving 500M+ users. Cut system downtime 25% via ML-based telemetry.
— Apple (Engineering Team Lead, London): Cut API latency 45%. Reduced legacy migration risk 60% through phased monolith-to-microservices transition.
— Independent consulting (2013-2019): Delivered 40+ SaaS, automation, and e-commerce platforms for Adidas, Puma, Trendyol, Logitech, Sabanci Holding, MNG Holding, Fenty Beauty, Anastasia Beverly Hills, iRobot, Alo Yoga, Abbott, Sheraton, ELLE, ColourPop, Pernod Ricard. 90%+ client retention over 7 years.
How I work
Direct, async, ownership-first. I treat your codebase like my own. Comfortable with ambiguous briefs. I translate business goals into shipped product, engineering standards, and reliable delivery cycles. Available immediately, 30+ hours per week, remote globally.
Let's talk if you need
— An AI feature or product built end-to-end, not just a prototype
— A senior engineer who can architect and ship, not just write code
— A technical advisor or fractional CTO for early-stage product decisions
— A founder-engineer who has been on your side of the table
Quick to respond. Happy to hop on a short call to scope things out.
Steps for completing your project
After purchasing the project, send requirements so Yunus can start the project.
Delivery time starts when Yunus receives requirements from you.
Yunus works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff and technical scoping
30-min call to align on scope, must-haves, deadlines, and tradeoffs. I write a short architecture doc covering stack, data model, third-party services, and deployment plan. You approve before I write code.
Repo setup, CI/CD, and deploy pipeline
Repo bootstrapped with Next.js, TypeScript, Tailwind, ESLint, Prettier, tests, and GitHub Actions. First deploy to staging on day 2-3 so you have a live URL to follow along.