Talha Mansoor

Talha Mansoor

Senior Frontend Engineer specializing in React, Next.js, and React Native with a focus on security and AI-assisted development.

Based in: Karachi, PakistanCurrently: Freelance Frontend Engineer, TrulernExperience: 7 years

Hire me

Frontend engineer with over 6 years of experience building scalable web and mobile applications across SaaS, e-commerce, and blockchain sectors. He has a proven track record of owning entire frontend architectures, leading security remediations for enterprise reviews, and optimizing performance using modern AI-driven workflows.

Experience

Freelance Frontend Engineer

TrulernRemotefreelanceMay 2026 – Present

Summary

White-labelled a commercial MERN LMS into an Arabic-first training platform: RTL support built in from the ground up, a scoped design system that rebrands the public site without touching the portals, and three role-separated dashboards.

What I did

  • Created a white-labeling site for Trulern.
  • Tested the course LMS flow for a prebuilt feature that lacked existing test cases.
  • Developed a platform for a private schooling system transitioning to a full online model.

Results

  • Conducted a two-part assessment to test existing code and verify that new changes did not introduce bugs or side effects.
  • Developed platform for a private schooling system with more than 1,000 students enrolled across different programs.
ReactTypeScriptTailwind CSSMERNJest

Senior Frontend Engineer

Grantful (via Optimyse)RemoteworkSep 2023 – May 2026

Summary

SaaS platform for managing grants and funding programs. Five-person company, two engineers.

What I did

  • Owned the entire frontend, working directly with the CEO and PM with no senior engineer above.
  • Shipped 20+ features across the customer-facing platform.
  • Led frontend remediation for a third-party penetration test, clearing the product for enterprise security review: eliminated XSS across six components rendering user-submitted content via allowlist-based HTML sanitisation, defined the application's first Content Security Policy at the Next.js layer, implemented HSTS and security headers, and closed a session-token cache-leakage issue.
  • Improved page performance by 30%, measured via Lighthouse and real page-load timings before and after, through code splitting and caching.
  • Accelerated feature delivery by approximately 30% using AI-assisted development workflows (Cursor, Claude Code).
  • Created most features and pages without existing designs, effectively building a design system without external tools.
React.jsNext.jsTypeScriptTailwind CSSMUIGraphQLCursorClaude Code

Software Engineer

Cooperative ComputingKarachi, PakistanworkApr 2022 – Sep 2023
Key Responsibilities: • Book.io (iOS/Android) - built the initial production release end to end as sole engineer and handed it over to the client's in-house team, who have built on that foundation since. Web3 ebook reader with crypto wallet integration for on-chain book ownership, customisable reading themes and typography, and bookmarking with reading-position sync. Now rated 4.8 with 1,000+ downloads on Google Play. • Lilli Health (iOS/Android) - led development of a cross-platform app for managing PCOS and insulin resistance, handling sensitive user health data. Live on Google Play and the App Store. • Leaf'Em (iOS/Android) - led development of a two-sided plant-sitting marketplace connecting plant owners with vetted sitters, with separate flows for each side. Live on Google Play and the App Store. • Led delivery on both Lilli Health and Leaf'Em, directing outsourced engineers who reported to me. Achievements: • Book.io now rated 4.8 with 1,000+ downloads on Google Play. • Successfully handed over Book.io production release to client's in-house team.
React NativeReact.jsTypeScriptREST APIsWeb3 wallet integration

Skills

Technical

JavaScript (ES6+)JavaScript (ES6+)
HTML5HTML5
CSS3CSS3
React.jsReact.js
TypeScriptTypeScript
React NativeReact Native
REST APIs
Responsive Design
Tailwind CSSTailwind CSS
AI-assisted development
Next.jsNext.js
Context API
Material UIMaterial UI
Cursor
Claude Code
GitGit
Agile/Scrum
TanStack Query
Accessibility
Prompt engineering
Content Security Policy
XSS remediation
Security headers
Zustand
Internationalisation
ViteVite
Redux ToolkitRedux Toolkit
Agentic workflows
Web Performance Optimisation
LLM integration
WebRTC
Real-time video streaming
OWASP
GraphQLGraphQL
JestJest
React Testing LibraryReact Testing Library
Unit testing
CI/CD
WebpackWebpack
SQLSQL
Keychain
FigmaFigma
Keystore

Projects

Book.io

Sole Engineerprofessional
Web3 ebook reader with crypto wallet integration for on-chain book ownership, customisable reading themes and typography, and bookmarking with reading-position sync. Built the initial production release end to end as sole engineer.
React NativeWeb3Crypto wallet integration
Visit the site

Lilli Health

Lead Developerprofessional
Cross-platform app for managing PCOS and insulin resistance, handling sensitive user health data. Live on Google Play and the App Store.
React NativeKeychainKeystore

Leaf'Em

Lead Developerprofessional
Two-sided plant-sitting marketplace connecting plant owners with vetted sitters, with separate flows for each side. Live on Google Play and the App Store.
React Native

Winner Winner (Playtertainment)

Frontend Engineerprofessional
React Native client for a live online arcade that streams real physical claw machines with real-time user control. Built a vertical short-form video feed over WebRTC, managing peer connection lifecycle across scroll; shipped the favourites feature; owned UI defect resolution.
React NativeWebRTC

Education

Bachelor of Software Engineering

University of Karachi (UBIT)Software Engineering2017 – 2021

Recognition

Awards

NYX Award

NYX Game Awards

Awarded for the Winner Winner (Playtertainment) project.

MUSE Award

MUSE Creative Awards

Awarded for the Winner Winner (Playtertainment) project.

Hire TalhaReach out about a role, a contract or a conversation.For recruiters

Talha's twin is AI, it can make mistakes.

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