Mustufa Aijaz - Web Developer

Overview

Fullstack web developer (senior-level, score 4.0) focused on building practical e-commerce backends and integrated React frontends with a clear emphasis on correctness and security. The strongest proven skill is backend transactional and domain logic as evidenced by ecommerce-api/src/services/order.service.ts which implements mongoose transactions, stock adjustments, and guarded order-status transitions. The codebase lacks visible automated test suites, CI-based a11y or performance measurement, and few frontend component files are present to evaluate component-level architecture or keyboard/ARIA behavior.

Phone

Timeline

Founder & Full-Stack Web Developer (Freelance) · Head+

Tech Web Studio · Freelance

Jan 2025 to Present 1 Year 10 Months Karachi In office

Designed and built responsive client websites end to end, covering frontend, backend APIs, databases, and deployment. Developed a salon booking platform using an ASP.NET Core Web API with SQL Server, including an admin dashboard, and deployed it on Azure App Service. Created the agency React/Vite/Tailwind marketing site and deployed it on Cloudflare, and automated outreach using n8n with OpenStreetMap data and LLM-generated pitches.

ASP.NET Core

SQL

Azure

React.js

Cloudflare

Tailwind CSS

Vite

n8n

LLM

Junior .NET Developer · Junior

eCreatorz · Full-Time

Feb 2025 to Jun 2026 1 Year 4 Months Karachi In office

Maintained production ERP modules for seizure tracking, accommodation, and HR payroll using ASP.NET WebForms, VB.NET, and SQL Server. Built data-driven UI using Telerik controls, backed by a stored-procedure based data access layer. Diagnosed and resolved bugs and technical issues in live systems used by business teams.

SQL

.NET

Visual Basic

ClickUp

Usman Institute of Technology

Bachelor's Degree · Bachelor of Computer Science (BS-CS)

2024 Karachi, Pakistan

Government Dehli College

High School Diploma · Pre-Engineering (Intermediate)

Karachi, Pakistan

Metropolitan College

High School Diploma · Matriculation, Science (Biology)

Athens, Greece

Projects

Stitch&Scan Tex

Produced a company website and a 15-page PDF profile for a textile inspection business. Organized business information into a structured online presence and a downloadable document format. Concentrated on presenting services and company details clearly to potential customers.

Tech Web Studio Agency Site

Created a React/Vite/Tailwind marketing website for the agency with portfolio and pricing pages. Focused on responsive, SEO-friendly page structure and clear presentation of services. Deployed the site to Cloudflare for public access.

Maison Élégance Salon

Built a full-stack salon booking platform with an ASP.NET Core Web API and SQL Server, including an admin dashboard. Managed the deployment setup and ensured the service ran on both Azure App Service and Cloudflare. Owned the workflow from page structure and design to a live production website.

Technical skills

Languages

6

TypeScript

SQL

Node JS

Python

JavaScript

C#

Node JS

6

Axios

Express

Mongoose

Bcrypt

Morgan

Helmet

C#

3

ASP.NET Core

Blazor

Entity Framework Core

Frontend

7

React.js

Tailwind CSS

Vite

Zod

React Router

Framer Motion

Next.js

DevOps

4

Azure

Cloudflare

GitHub

Git

Other

5

LLM

PostgreSQL

Figma

PostCSS

Adobe XD

Senior Frontend Developer Confidence: Medium Fullstack

Fullstack web developer (senior-level, score 4.0) focused on building practical e-commerce backends and integrated React frontends with a clear emphasis on correctness and security. The strongest proven skill is backend transactional and domain logic as evidenced by ecommerce-api/src/services/order.service.ts which implements mongoose transactions, stock adjustments, and guarded order-status transitions. The codebase lacks visible automated test suites, CI-based a11y or performance measurement, and few frontend component files are present to evaluate component-level architecture or keyboard/ARIA behavior.

UI Component Architecture

2/10

How interface parts are built

UI component architecture is thin in the human-authored frontend artifacts provided; there is strong styling and tokenization but few component files or custom hook boundaries to evaluate composition or component-level state design.

Evidence

agency-website/src/index.css: extensive design tokens and utility classes indicating a design system

ecommerce-frontend/src/types/index.ts: typed UI/domain models used by frontend code (Product, Order, AuthState)

Responsive & Cross-browser

3/10

Works on all screens and browsers

Responsive and cross-browser concerns are addressed at a stylesheet and HTML level (viewport, font preconnect, prefers-reduced-motion) but there is limited evidence of advanced responsive strategies like container queries, RTL readiness, or feature detection beyond standard meta and CSS rules.

Evidence

agency-website/index.html: meta viewport and font preconnects

agency-website/src/index.css: prefers-reduced-motion handling and CSS logical styles

Performance Optimization

4/10

Speed of the interface

Some practical performance considerations are present - backend uses lean() and parallel Promise.all queries, and frontend preconnects fonts; however there is no CI-integrated bundle analysis, RUM metrics, or advanced code-splitting evidence in the human-authored frontend files.

Evidence

ecommerce-api/src/services/product.service.ts: Product.find(...).lean() and Promise.all for parallel DB operations

agency-website/index.html: rel=preconnect for Google fonts

Accessibility & Semantics

3/10

Usable for everyone

Accessibility and semantics are partially considered: HTML lang attribute, reduced-motion preference, and utility focus styles exist, but there is no evidence of keyboard focus management in interactive components, ARIA on custom widgets, or automated a11y checks in CI.

Evidence

agency-website/index.html: <html lang="en"> and meta tags

agency-website/src/index.css: @media (prefers-reduced-motion: reduce) and .focus-ring utility

State Management & Data Flow

5/10

Managing data in the app

State and data-flow discipline is a strong area: typed frontend models, a centralized axios API with auth interceptors and global 401 handling, and a backend with Zod validation, AppError, and transactional order creation demonstrate deliberate server-state and error handling patterns.

Evidence

ecommerce-frontend/src/services/api.ts: axios instance with request/response interceptors handling JWT and global 401 behavior

ecommerce-api/src/validators/schemas.ts: Zod schemas for auth, products, orders and payments

ecommerce-api/src/services/order.service.ts: mongoose sessions/transactions and guarded status transitions

UX & Visual Polish

4/10

Look and feel quality

Visual polish and perceived-UX are high in the CSS work with skeletons, shimmer, gradients and animations, but UX flow artifacts (comprehensive loading/error/empty states across components, undo patterns, measured perceived performance) are not present in the human-authored frontend code provided.

Evidence

agency-website/src/index.css: skeleton, shimmer, animated-gradient-text and many motion utilities

ecommerce-frontend/src/index.css: skeleton loader and animation utilities

Expertise

HTML & CSS· Middle

React· Middle

Frontend Architecture & Build Tools· Middle

Industries

Commerce· Middle

Technologies

JavaScript· since 2026

TypeScript· Senior

Tailwind CSS· since 2025

Next.js

Azure· since 2025

Figma

Git

Cloudflare· since 2025

React.js· since 2025

Vite· since 2025

Adobe XD

PostCSS

Zod

Framer Motion

React Router

GitHub

Frontend· mentioned only

Recommendations

Lead development of e-commerce APIs and transactional order systems that require atomicity, inventory consistency and role-based access control.
Build end-to-end small-to-medium web applications that include React frontends and Node/Mongo backends where security and input validation matter.
Implement and maintain production-grade backend services (rate limiting, sanitization, structured error handling) and integrate them with typed frontend API clients.
Improve delivery of frontend UX by adding component-level architecture, comprehensive loading/error/empty states, and automated a11y and performance checks.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

agency-website ecommerce-api ecommerce-frontend

Middle Backend Developer Confidence: High API Engineer

Backend API engineer focused on building RESTful Node.js and MongoDB services with solid validation and transactional correctness. The strongest proven skill is transactional order processing and stock management implemented in src/services/order.service.ts using mongoose sessions to ensure atomic updates. There is limited evidence of advanced production concerns such as distributed systems patterns, caching layers, observability/metrics or explicit deployment/migration histories.

API Design

5/10

How well APIs are designed

Clear REST API design with versioned routes, request validation and consistent error contract handling, but no explicit idempotency keys or advanced API evolution strategy.

Evidence

ecommerce-api/src/app.ts: routes mounted under /api/v1 (app.use('/api/v1/auth', ...))

ecommerce-api/src/validators/schemas.ts: comprehensive zod schemas for auth, products, orders and payment queries

ecommerce-frontend/src/services/api.ts: axios wrapper with interceptors and centralized error handling

Data Layer & Database

5/10

Working with databases

Thoughtful data-layer decisions including mongoose transactions for atomic operations, query optimization with .lean() and counted pagination, and explicit DB error handling, but no migration history or explicit isolation-level controls.

Evidence

ecommerce-api/src/services/order.service.ts: mongoose.startSession() transaction for stock decrement + order creation

ecommerce-api/src/services/product.service.ts: Product.find(...).sort(...).skip(...).limit(...).lean() and countDocuments for pagination

ecommerce-api/src/middleware/error.middleware.ts: handlers for CastError, duplicate key (11000) and validation errors

Scalability & Performance

4/10

Handling load and speed

Basic scalability and performance practices present (rate limiting, pagination limits, concurrent updates via Promise.all), but lacks caching, queue-based decoupling or documented load-testing and advanced optimizations.

Evidence

ecommerce-api/src/app.ts: express-rate-limit configured for /api

ecommerce-api/src/product.service.ts: limit cap and skip/limit pagination with countDocuments

ecommerce-api/src/services/order.service.ts: Promise.all for parallel stock updates

System Architecture

4/10

Overall system structure

Reasonable modular structure (routes, services, models, middleware, validators) and versioned APIs that show deliberate separation of concerns, but no evidence of multi-service contracts, service discovery or complex decomposition trade-offs.

Evidence

ecommerce-api/src/app.ts: clear module boundaries with imports for auth, product, order and payment routes

ecommerce-api/src/validators/schemas.ts: centralized validation module

project structure (routes, services, models, middleware) visible across ecommerce-api files

Security & Auth

5/10

Protecting data and access

Good security hygiene at input and transport boundaries with helmet, mongo-sanitize, rate limiting, zod validation and JWT usage; however lifecycle concerns like token revocation, refresh flows and secrets rotation are not shown.

Evidence

ecommerce-api/src/app.ts: app.use(helmet()), app.use(mongoSanitize()), rate limiting middleware

ecommerce-api/package.json: dependencies include express-mongo-sanitize, helmet, express-rate-limit, jsonwebtoken

ecommerce-api/src/validators/schemas.ts: strict input validation with zod for payments, orders and products

Reliability & Observability

4/10

Stability and monitoring

Robust error handling with environment-aware responses and transactional safeguards are present, plus dev logging, but there is little evidence of observability (metrics/alerts), retry/backoff strategies, or graceful process shutdown handling.

Evidence

ecommerce-api/src/middleware/error.middleware.ts: dev vs prod error responses and handlers for common DB and JWT errors

ecommerce-api/src/services/order.service.ts: transaction commit/abort and session.endSession() usage

ecommerce-api/src/app.ts: morgan logging enabled in development

Expertise

Microservices & API Architecture· Middle

Node.js· Middle

Industries

Commerce· Middle

Technologies

Node JS· Senior

Express

Bcrypt

Mongoose

Axios

Helmet

Morgan

Recommendations

Develop a production-grade checkout service with idempotency keys, payment gateway integration, and documented failure/retry semantics.
Add observability: expose metrics (Prometheus), structured logs with correlation ids, and alerting for key SLOs.
Introduce caching (Redis) for read-heavy product queries and design cache invalidation for stock changes.
Introduce migration tooling and explicit schema migration history for reliable schema evolution across environments.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

agency-website ecommerce-api ecommerce-frontend

Job preferences

Work permits: Pakistan
Employment type: Full-Time