GHULAM.DEV
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● AVAILABLE FOR SENIOR ENGINEERING ROLES

Product-Minded Senior Software Engineer.

Architecting production-grade applications across the full stack. I specialize in shipping high-performance React Native mobile apps, scalable Node.js backends, and integrating LLMs into real-world SaaS products.

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Ghulam Mustafa — Senior Full-Stack & Mobile Engineer

0 rollbacks

6+ consecutive sprints — Lumida Wealth

100K+

Active users — Udhaar Book

40%

App startup speed — Udhaar Book

50%

API latency cut — Dastgyr

SYSTEM_STACK_v4.0 · 5+ yrs production · React · React Native · Node.js · AI

Key Achievements & Production Metrics

Zero rollbacks

Delivered optimised investor features on a fast monthly sprint cadence — zero production rollbacks across 6+ consecutive releases on a live high-net-worth investor platform.

Lumida Wealth

100K+ users impacted

Built and maintained critical ledger, payment, and credit features used daily by 100K+ SMB users — while cutting app startup by 40% through Hermes tuning, FlatList virtualisation, and strategic memoisation.

Udhaar Book

30% more engagement

Grew user engagement on Unilever's nationwide B2B retail app through targeted UX redesigns and onboarding flow optimisation.

Unilever 'Roll'

End-to-end delivery

Acted as a critical individual contributor on Roll — owning full sprint cycles end-to-end and consistently shipping fast, impactful features that kept the platform responsive to distributor demands.

Unilever 'Roll'

50% faster APIs

Contributed to backend optimisations that halved API response times and enabled the platform to handle 3× the order volume with no additional infrastructure.

Dastgyr

5% → 2% crash rate

Halved mobile crash rate across three React Native apps through Crashlytics monitoring, structured error handling, and native module fixes.

Dastgyr

⬡ SELECTED_PROJECTS

Production case studies

AUTONOMOUS AI AGENT

DevFix 🛠️

DevFix 🛠️

PROBLEM

The dreaded 'It works on my machine' syndrome. Existing AI tools guess fixes instead of verifying them.

SOLUTION

Built an open-source agentic workflow that executes fixes in a secure Docker sandbox and actively verifies build success.

RESULT

Achieved an 80% autonomous recovery rate on severely broken local development environments.
80% autonomous recovery rate10-case rigorous benchmarkDocker SandboxingSelf-Verifying Agent
TypeScriptNode.jsDockerOpenAI APIBash/Shell Automation
AI PIPELINE & SAAS

OmniBid Intelligence Engine

OmniBid Intelligence Engine

PROBLEM

Finding freelance jobs is exhausting. Many jobs are scams, have bad budgets, and standard LLMs hallucinate missing job details.

SOLUTION

Built an autonomous AI pipeline with strict deterministic gates to block scams and an anti-hallucination claim verifier.

RESULT

Achieved 96.4% decision accuracy on a 28-job Golden Benchmark Suite with 100% scam rejection.
96.4% Decision Accuracy100% Scam Rejection7.9s Average Run TimeZero Hallucinations
Next.js 16TypeScriptPrismaSQLiteMCP
FULL-STACK RAG PRODUCT

Borderless AI Copilot

Borderless AI Copilot

PROBLEM

Immigration rules are overly complex, constantly changing, and finding qualified visa pathways often requires expensive legal consultation.

SOLUTION

Built a full-stack Next.js product combining deterministic mathematical scoring with a pgvector-powered RAG chatbot.

RESULT

Successfully modeled 1,454 distinct visa pathways across 70+ countries into a highly accurate rules engine.
1,454 Visa Pathways Modeled70+ CountriesDeterministic + RAG HybridFull SaaS Architecture
Next.js 14Neon (pgvector)ClerkStripeOpenAI
AI + FINTECH SAAS

Lumida Wealth Investor Platform

Lumida Wealth Investor Platform

PROBLEM

High-net-worth investors needed reliable portfolio visibility, secure access, and faster decision support across web and mobile.

SOLUTION

Shipped OAuth2-secured investor workflows, real-time portfolio sync, and LLM-powered insight experiences using OpenAI API across iOS, Android, and web.

RESULT

Zero production rollbacks across 6+ consecutive sprints with a consistent monthly release cadence. Reduced UI bug reports by 35% through WCAG 2.1 enforcement.
0 rollbacks in 6+ sprints35% fewer UI bugsMonthly release cadence
ReactReact NativeNode.jsPostgreSQLOpenAI APIOAuth2
B2B MOBILE PRODUCT

Udhaar Book Ledger & Payment Flows

Udhaar Book Ledger & Payment Flows

PROBLEM

SMB users faced slow app startup and unstable sessions while handling daily credit and payment operations on low-bandwidth networks.

SOLUTION

Built offline-first sync with Firebase Realtime Database and optimised the React Native runtime via FlatList virtualisation, Hermes engine tuning, and strategic memoisation — profiled with Flipper.

RESULT

Delivered a 40% faster startup, 25% drop-off reduction, and consistent monthly releases for 3 years across 100K+ active users.
100K+ active users40% faster load times25% drop-off reductionsub-200ms UI response
React NativeFirebaseHermesFlipperNode.js
ENTERPRISE MOBILE

Unilever 'Roll' Retail Platform

Unilever 'Roll' Retail Platform

PROBLEM

Distributor ordering operations needed reliability and better UX to drive retailer engagement across Pakistan.

SOLUTION

Maintained and scaled the app with targeted UX redesigns, onboarding optimisations, and Sentry-based proactive error monitoring with structured incident response.

RESULT

30% engagement growth and 99.9% uptime across thousands of daily B2B distributor transactions nationwide.
30% engagement growth99.9% uptimeThousands of daily transactions
React NativeSentryMobile Performance Tuning
OPERATIONAL COMMERCE INFRASTRUCTURE

Dastgyr Multi-App Commerce Engine

Dastgyr Multi-App Commerce Engine

PROBLEM

High-order-volume operations needed faster APIs and stable app performance across retailer, picker, and driver experiences.

SOLUTION

Built the picker app from scratch as sole developer. Contributed to driver and retailer app features alongside the engineering team. Collaborated on Node.js/PostgreSQL service optimisations and owned Crashlytics crash monitoring across all three apps.

RESULT

Cut API latency 50%, scaled 3× traffic with zero infrastructure changes, and reduced crash rate from 5% to 2% — all while processing 10K+ daily orders.
10K+ daily orders50% faster API response3× traffic scaledCrash rate 5%→2%sub-200ms UI
Node.jsPostgreSQLReact NativeCrashlyticsAWS
EDTECH · WEB3 · BLOCKCHAIN

Satolearn — Bitcoin Education Platform

Satolearn — Bitcoin Education Platform

PROBLEM

Blockchain engineers are in critical global shortage, yet most learning resources are passive and theory-heavy — disconnected from real development environments and impossible to act on without external tooling.

SOLUTION

Contributed to the React frontend of an interactive Bitcoin/blockchain learning platform — working alongside the Vaionex engineering team to build and maintain course interfaces, mentor booking flows, and the in-browser coding environment.

RESULT

Platform grew into the leading Bitcoin education resource — integrated into the University of Exeter's official curriculum for 2+ consecutive years, showcased at BSV Global Blockchain Convention, and backed by Vaionex Corporation with a global developer community.
University of Exeter curriculum partnerShowcased at BSV Global Blockchain ConventionIn-browser blockchain coding IDEFreemium + mentor marketplace
ReactNode.jsBitcoin SVBlockchain SDKGoogle Analytics
B2B E-COMMERCE · MARKETPLACE

Saddar — B2B Wholesale Marketplace

Saddar — B2B Wholesale Marketplace

PROBLEM

Pakistan's retail supply chain was fragmented across opaque wholesale channels — retailers had no reliable way to verify supplier authenticity, compare prices transparently, or place bulk orders without physically visiting wholesale markets.

SOLUTION

Built the Next.js storefront for Pakistan's largest B2B wholesale marketplace, connecting verified suppliers with retailers across 8+ product categories. Delivered wholesale pricing (up to 30% below retail), flexible MOQs, and a Sentry-monitored checkout experience with 3-day delivery across major cities.

RESULT

A high-traffic B2B marketplace serving retail shop owners across Karachi, Lahore, and Islamabad — thousands of SKUs, a verified supplier network, and a performant Next.js frontend handling daily wholesale ordering volume at scale.
8+ product categoriesUp to 30% below retail pricing3-day nationwide delivery SLASentry-monitored reliability
Next.jsReactTypeScriptSentrySEO Optimisation

⬡ SERVICES

What I build for clients

Available for freelance engagements, contract work, and product collaborations — fixed-scope or ongoing.

SaaS & Web Apps

Full-stack web products — dashboards, multi-tenant SaaS, and landing pages built to ship fast and scale further.

ReactNext.jsNode.jsPostgreSQLTypeScriptTailwindCSSPrismaVercelStripeGraphQL

Mobile Apps

Cross-platform iOS & Android apps in React Native. Production-grade UX, offline support, and App Store delivery.

React NativeExpoFirebaseiOSAndroidHermesWatermelonDBFastlaneReduxPush Notifications

AI Feature Integration

Add LLM-powered capabilities to your product — chat interfaces, document summarisation, data extraction, and AI workflows.

OpenAI APIGPT-4Node.jsStreamingPrompt EngineeringLangChainVercel AI SDKpgvectorRAGFunction Calling

API & Backend

REST APIs, third-party integrations, database design, and backend architecture for web and mobile products.

Node.jsTypeScriptPostgreSQLFirebaseRESTGraphQLNestJSDockerPrismaRedis

⬡ TECH_STACK

Technical proficiencies

Frontend

10 ITEMS
React.jsNext.jsTypeScriptJavaScript ES6+HTML5CSS3TailwindCSSReduxZustandMaterial UI

Mobile

07 ITEMS
React Native (iOS & Android)ExpoReact NavigationNative ModulesOffline-First ArchitectureHermesFlipper

Backend + Databases

13 ITEMS
Node.jsNestJSExpress.jsKoa.jsGraphQLRESTful APIsPrisma ORMJWTOAuth2PostgreSQLMongoDBFirebaseSupabase

AI + SaaS

07 ITEMS
OpenAI APIFunction CallingStreaming APIs (SSE)Prompt EngineeringLLM IntegrationReal-time AI dashboardsSaaS Architecture

Cloud, QA & Tools

12 ITEMS
AWS (EC2, S3, Lambda)DockerGitHub ActionsVercelFastlaneJest & CypressSystem DesignWCAG 2.1SentryCrashlyticsFigmaGit & Postman

⬡ EXPERIENCE

Professional history

Senior Software Engineer (Contract/Consulting)

Early-Stage Startups · Contract / Consulting · Remote

Jun 2026 – Present

Architecting web apps, SaaS products, and AI integrations for growth businesses

  • Developing scalable web and mobile solutions using React, Next.js, Node.js, NestJS, TypeScript, and AWS.
  • Integrating LLMs, RAG workflows, and custom AI APIs into existing product ecosystems.
  • Partnering with founders and engineering teams on architecture, performance optimization, and product roadmaps.

Senior Software Engineer

Lumida Wealth · Remote · Full-time

Aug 2025 – Jun 2026

AI-powered wealth management SaaS · High-net-worth US investor platform

  • Shipped investor-facing features — portfolio tracking, real-time data sync, and OAuth2 authentication — across iOS, Android, and web, collaborating cross-functionally to maintain zero production rollbacks across 6+ consecutive sprints.
  • Integrated LLM-powered insights and AI-driven data visualisations using OpenAI API, accelerating investor decision workflows and increasing feature adoption.
  • Contributed to a consistent monthly release cadence through disciplined CI/CD, cross-functional QA, and proactive issue resolution.
  • Improved UI/UX consistency and responsiveness across devices, reducing UI bug reports by 35% through WCAG 2.1 accessibility enforcement.

Software Engineer

Udhaar Book · Full-time

Jun 2022 – Jul 2025

Pakistan's #1 digital ledger & B2B payments app · 100K+ active SMB users

  • Owned end-to-end delivery of core ledger, credit management, and digital payment flows serving 100K+ SMBs — directly impacting company revenue and user retention.
  • Cut app load times by 40% through React Native lazy loading, FlatList virtualisation, Hermes engine tuning, and strategic memoisation — measured via Flipper profiling.
  • Contributed to a full refactor of the app's data layer to WatermelonDB, migrating core ledger and credit flows to improve offline reliability and reduce session drop-off by 25% for users on low-bandwidth mobile networks.
  • Drove a consistent monthly release cadence across iOS and Android for 3 years, improving customer retention quarter-over-quarter.

Mobile App Developer

Unilever Pakistan · Contract

Aug 2022 – Dec 2024

Enterprise B2B retail platform 'Roll' · Pakistan-wide distributor network

  • Maintained and scaled Roll, Unilever's mission-critical retail ordering app processing thousands of B2B transactions daily across Pakistan's distributor network.
  • Increased user engagement by 30% through targeted UX redesigns, onboarding flow optimisation, and performance-focused feature rollouts.
  • Sustained 99.9% app uptime via Sentry-based error monitoring, proactive error boundary implementation, and a structured incident response process.

Full-Stack Engineer

Dastgyr · Contract

Jun 2021 – May 2022

B2B e-commerce marketplace · 10K+ daily orders · Retailer, picker & driver apps

  • Built the picker app from scratch as sole developer; contributed to retailer and driver app features alongside the engineering team — collectively processing 10K+ daily orders with sub-200ms UI response times.
  • Collaborated on optimising Node.js and PostgreSQL backend services, contributing to a 50% reduction in API response times and enabling 3× traffic growth without infrastructure changes.
  • Reduced mobile crash rate from 5% to 2% by integrating Crashlytics, implementing structured error handling, and resolving critical native module issues.

Software Engineer

Inaequo Solutions · Full-time

Jun 2021 – May 2022

International client-facing product delivery

  • Delivered React Native and Node.js solutions across multiple international client engagements, building interactive UIs that drove a 25% increase in user engagement.
  • Operated in Agile sprints with cross-functional, globally distributed teams — improving code reusability and consistently meeting delivery milestones.

Software Engineer

Quanrio · Full-time

Nov 2019 – Aug 2020

Consumer web and mobile product development

  • Built and deployed React and React Native applications used by thousands of users; improved backend data processing efficiency by 40% via Koa.js and PostgreSQL API redesign.
  • Introduced Swagger API documentation and sprint tracking workflows, significantly reducing cross-team integration overhead.

⬡ EDUCATION

Academic foundation

Computer science degree with a strong focus on software engineering fundamentals.

DHA Suffa University

B.S. Computer Science

2015 – 2020

⬡ CLIENT TESTIMONIALS

What clients say after working together

Feedback highlights delivery reliability, responsiveness, and quality under real project constraints.

“Ghulam showed strong senior-level expertise in React Native and JavaScript. He maintained our code standards, handled edge cases, and ensured the module worked seamlessly with our backend APIs. Professional communication.”

React Native Dev Needed to Build Small App Module
Upwork
5.0

“Fixed critical React/Node issues and improved app performance significantly! Code quality and problem-solving were top-notch. Delivered on time and exceeded expectations.”

Full-Stack Dev to Fix & Improve Part of React/Node App
Upwork
5.0

“Very responsive to communication. Delivery was well within expectations. He made prudent suggestions that improved the app. Quality was excellent.”

sheppardta — US Client
Fiverr
5.0

“After a pleasant previous experience I returned with more work. Delivery was quick and quality was good. Recommend.”

harrycollin — UK Client
Fiverr
5.0

⬡ AI DIRECTION

Current direction: AI-integrated product engineering

AI features already in production at Lumida Wealth, plus ongoing investment in patterns for building reliable AI-native SaaS systems.

shipping

AI Product Engineering

Building production-ready, autonomous AI pipelines and RAG workflows. Focused on deterministic gating, anti-hallucination layers, and verifiable outputs rather than thin API wrappers.

active

SaaS Architecture & Integration

Integrating LLMs deeply into Next.js and Node.js ecosystems. Architecting data sync, vector databases (pgvector), and seamless client-side streaming for B2B and B2C products.

building

Agentic Workflows

Developing tools and systems that allow AI agents to safely execute code, self-verify results, and automate complex developer workflows within sandboxed environments.

Frequently Asked Questions

⬡ CONTACT

Let's build something extraordinary together.

Available for remote senior roles and high-impact product builds. I work best where performance, reliability, and outcomes are non-negotiable.

EMAIL

hello@ghulam-mustafa.com

WHATSAPP (MY)

+60 14-813 0908

WHATSAPP (PK)

+92 308-701 5957

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