Available for freelance & startup collaborations
Saad Hassan Razi — Full Stack Developer

Saad Hassan Razi

Full Stack Engineer  ·  AI Integration Specialist  ·  Automation Architect

I design and build scalable web applications, AI-powered products, and intelligent automation systems that solve real business problems — from prototype to production.

4+
Years Experience
12+
Projects Delivered
3
Tech Stacks
View Case Studies

Professional Summary

Senior full-stack engineer with a focus on scalable systems, AI integration, and business automation

Who I Am

I'm a full-stack engineer with 4+ years of professional experience delivering web applications, AI-integrated products, and complex automation systems for startups and enterprise clients. My technical foundation spans the full stack — from architecting PostgreSQL schemas and REST/GraphQL APIs to building pixel-perfect React and Angular frontends.

Over the past year I've expanded into AI product development — building RAG pipelines, integrating OpenAI and LangChain into production systems, and designing intelligent dashboards that turn raw business data into actionable insights.

I work closely with clients, founders, and product teams to ship reliable software on time. Clean architecture, readable code, and zero technical debt are non-negotiable for me.

React / Next.jsAngularNode.jsFastAPILangChainPostgreSQLReact Native

Full-Stack Systems

End-to-end architecture from database schema to UI — React, Angular, Next.js on the front; Node.js, FastAPI, and PostgreSQL on the back.

AI-Powered Products

RAG pipelines, LangChain integrations, OpenAI API, and semantic search — turning LLM capabilities into production-grade features with real business value.

Automation Architecture

Multi-system automation using Zapier, n8n, Make, and Google Apps Script — eliminating manual workflows and connecting SaaS tools at scale.

Startup & Client Work

Built for speed and reliability. I understand that startups need pragmatic solutions fast — without sacrificing code quality or scalability.

Tech Stack

A battle-tested toolkit for modern web apps, AI integrations, and automation systems

Frontend

React.jsNext.jsAngular 17TypeScriptTailwind CSSRxJS

Backend

Node.jsExpress.jsFastAPIPostgreSQLMongoDBRedis

AI & ML

LangChainOpenAI APIRAG ArchitecturePineconeEmbeddingsPrompt Engineering

Cloud & DevOps

AWSDockerCI/CDVercelFirebaseSupabase

Automation

n8nZapierMakeGoogle Apps ScriptWebhooksGo High Level

Mobile

React NativeExpoFlutterFirebaseFCMRedux Toolkit

Engineering Case Studies

Production-grade systems designed and built to solve real business problems at scale

Enterprise ApplicationCase StudyFeatured

Enterprise Workflow Management Platform

Problem:Organizations operating across multiple departments struggled with fragmented approval processes, manual task routing, and zero auditability — creating compliance risks, operational bottlenecks, and costly human errors at scale.

Angular 17TypeScriptRxJSNgRxNode.jsExpress.jsPostgreSQLRedisWebSockets
AI / Full-StackCase Study

AI Document Knowledge Assistant

Problem:Enterprise teams spent hours manually searching through hundreds of internal documents, PDFs, and wikis. Critical institutional knowledge was effectively inaccessible, causing repeated research cycles and slow onboarding for new team members.

Next.js 14FastAPILangChainOpenAI APIPineconePostgreSQLTypeScriptTailwind CSS
AI / AnalyticsCase Study

AI Business Insights Dashboard

Problem:Non-technical stakeholders at SMBs lacked the ability to extract actionable insights from raw sales data, spreadsheets, and reports — creating a bottleneck dependency on data analysts for every business question and delaying strategic decisions.

Next.js 14FastAPIOpenAI APIPostgreSQLLangChainChart.jsTypeScriptPython
Full-Stack / Real-TimeCase Study

Real-Time Collaborative Messaging Platform

Problem:Distributed teams required a reliable, low-latency communication platform that persisted message history, supported structured channels, and scaled horizontally beyond a single server instance — without vendor lock-in.

ReactNext.jsSocket.ioNode.jsFastifyRedisPostgreSQLTypeScriptJWT
Mobile / Cross-PlatformCase Study

Cross-Platform Mobile Productivity App

Problem:Field teams and remote workers lacked a reliable mobile productivity tool that functioned seamlessly offline, synchronized data across devices in real time, and integrated with existing cloud workflows — without requiring separate iOS and Android codebases.

React NativeExpoTypeScriptRedux ToolkitFirebaseFirestoreFCMReanimated 2

Work Experience

Professional history and key engineering accomplishments

Full Stack & Automation Engineer

Code In Bracket
Remote
Freelance
Oct 2021 – Present

Lead engineer for client-facing automation systems and full-stack web applications. Responsible for end-to-end architecture, API integration strategy, and delivery of complex multi-system workflows for international clients.

Key Achievements
Architected an automation system integrating Zapier, Oura API, and Trainerize API — reducing manual data entry by 85% across 40+ client accounts
Built Google Apps Script solutions consolidating fitness and health data from multiple APIs into structured Google Sheets dashboards for real-time client reporting
Delivered 12+ client projects spanning React, Node.js, and API integrations with a 100% on-time delivery record

React Developer

Enigmatix
On-Site
Full-Time
Jun 2023 – Oct 2024

Front-end engineer on a product team building data-driven web applications. Delivered feature work in React and TypeScript while collaborating closely with designers and backend engineers across agile sprints.

Key Achievements
Built responsive React/TypeScript applications serving thousands of daily active users with sub-100ms interaction times
Improved application Lighthouse performance score by 40% through code-splitting, lazy loading, and image optimization strategies
Established a reusable component library and design token system adopted across 3 product teams, reducing front-end delivery time by 25%

Angular Developer

Enigmatix
On-Site
Full-Time
Nov 2024 – Present

Engineer on enterprise Angular applications handling complex business logic, NgRx state management, and multi-module architecture for B2B SaaS products serving 50+ organizations.

Key Achievements
Developed enterprise Angular modules with NgRx entity-based state management for a B2B SaaS platform used by 50+ organizations
Implemented complex role-based access control systems with route-level and component-level permission guards and dynamic menu rendering
Mentored two junior developers on Angular architecture patterns, RxJS operators, and performance optimization best practices

Data Annotator

Voxel
Remote
Part-Time
Aug 2021 – May 2024

Contributed to AI model training pipelines by labeling, reviewing, and quality-assuring structured and unstructured datasets for computer vision and NLP model development.

Key Achievements
Labeled and quality-checked 10,000+ annotated data points across computer vision and NLP training datasets
Collaborated with the data science team to identify systemic labeling inconsistencies, improving dataset accuracy by 15%
Delivered structured feedback on annotation edge cases, accelerating the data collection pipeline efficiency

Certifications & Learning

Continuous learning and professional development across the full-stack spectrum

Frontend Development

Meta Front-End Developer

Meta / Coursera · 2023

View Certificate
Cloud & Infrastructure

AWS Certified Cloud Practitioner

Amazon Web Services · 2023

View Certificate
Automation & Scripting

Google IT Automation with Python

Google / Coursera · 2022

View Certificate
Frontend Development

React — The Complete Guide

Udemy · 2022

View Certificate

Let's Work Together

Available for freelance projects, startup collaborations, and full-time opportunities

Currently available for new projects

Ready to Build Something?

Whether you're a startup founder who needs a full-stack MVP, an Upwork client with a complex integration challenge, or an enterprise team looking for a senior engineer — I'm here to deliver production-quality work on time.

Phone / WhatsApp

+(92) 311-7697319

Location

Pakistan · Remote Worldwide

Send a Message