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Senior Full-Stack Engineer / Senior Software Engineer

Senior Full-Stack Engineer/ Senior Software Engineer

React, Next.js, TypeScript, Node.js, NestJS, PostgreSQL and AWS

SaaS, payments, integrations, production ownership and technical leadership

Mubashir Hussain wearing a charcoal shirt, seated at a desk beside a laptop
Production software
5+ years
Full-stack delivery
React / Node
Remote-ready
Islamabad, Pakistan

About

Production experience with architecture in the foreground.

Mubashir Hussain wearing a grey jacket, standing on an outdoor terrace

I am a senior full-stack engineer and senior software engineer with 5+ years of production ownership across React, Next.js, TypeScript, Node.js, NestJS, PostgreSQL, MongoDB, and AWS. My work tends to sit where product logic, billing, background jobs, vendor APIs, data integrity, and user experience meet.

I focus on SaaS, payments, integrations, and systems with real operational pressure: multi-tenant boundaries, provider failures, security controls, production releases, and codebases that teams must understand and evolve after the first launch.

SaaS platforms

API integrations

Data-backed products

Featured Projects

Software engineering case studies grounded in product problems, architecture, and outcomes.

View full software engineering resume

Flagship case studies

Architecture, decisions, constraints, and verified engineering results.

Integration topology

Domain, email, billing, and provisioning workflow

Bounded vendor workflowsReact / Node.js

Domain commerce and email automation

Custom Name Domain

Challenge

Extend an existing GoDaddy-based product with a new registrar and automate payment, DNS, and mailbox workflows without overstating ownership of the original platform.

Solution

Added Name.com commerce operations, Stripe subscription lifecycles, staged Zoho Mail provisioning, mailbox administration, and supporting account notifications.

Impact

Delivered the central commerce and branded-email workflows needed to move multi-vendor setup into a repeatable self-service product path.

ReactNode.jsMongoDBStripeName.comZoho Mail
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Product system

Membership billing, email, and AWS delivery pipeline

Reliable recurring workflowNext.js / NestJS

Aviation weather briefing SaaS

EZWxBrief

Challenge

Align frontend membership flows, backend schemas, operational billing jobs, and cloud delivery without claiming unsupported outcomes or complete original authorship.

Solution

Worked across PayPal Payflow recurring profiles, account and payment UX, NestJS data changes, AWS SES delivery, and versioned deployment tooling.

Impact

Implemented the recurring-billing and communication capabilities needed to support trial, renewal, cancellation, reactivation, and payment maintenance workflows.

Next.jsNestJSTypeScriptPostgreSQLPayPal PayflowAWS SES
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Commerce flow

Trust, verification, payment, and delivery lifecycle

From discovery to deliveryVue 3 / Node.js

Peer-to-peer courier marketplace

Be My Courier

Challenge

Modernize and extend an existing marketplace while making high-risk provider and business transitions auditable, idempotent, and recoverable.

Solution

Built AI-assisted intake, compliance operations, flight verification, Stripe trust/payment flows, verified handoffs, staff security, and durable background processing.

Impact

Added the trust, compliance, payment, and operational tooling needed to support more complete courier-marketplace lifecycles.

Vue 3Node.jsMongoDBStripe ConnectGeminiSocket.IO
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Selected production work

Additional systems across SaaS, data, integrations, and commerce.

Data product

GTFS ingestion, live alerts, rewards, and marketplace flow

Decision-ready informationReact / Node.js

Transit data and rewards platform

Transit Rewards

Challenge

Majorly extend an existing transit and rewards architecture while preserving agency-aware data and preventing duplicate alerts or rewards.

Solution

Refactored GTFS ingestion, built the real-time disruption worker, delivered the newer vendor marketplace, and extended commuter and reward workflows.

Impact

Connected schedule ingestion, live service information, commuter preferences, reward calculations, and marketplace redemption into a stronger operating flow.

ReactNode.jsMongoDBGTFS-RealtimeFirebase FCMGoogle Maps
Read project notes

Integration topology

Trust accounting, legal data, and identity result workflows

Bounded vendor workflowsReact / Node.js

Legal and productivity integrations

Elite Tech SaaS

Challenge

Extend several vendor-facing workflows while keeping the verified contribution scope precise and provider responses observable.

Solution

Extended Soluno trust workflows, created a Carpe Diem backend integration prototype, and enhanced Folio identity-report interfaces.

Impact

Added practical trust-accounting surfaces, a reusable backend integration layer, and clearer identity-verification presentation.

ReactNode.jsMongoDBSoluno APIsCarpe Diem APIsFolio
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Product system

Multi-tenant operations, finance, and analytics architecture

Reliable recurring workflowReact / Node.js

Portfolio and operations management

CEPRA

Challenge

Coordinate organization-specific databases, financial rules, capacity calculations, and executive analytics across a broad full-stack product.

Solution

Built multi-tenancy foundations and substantial invoicing, analytics, scheduling, lifecycle, authentication, and responsive UI workflows.

Impact

Established organization-safe operations and connected delivery, billing, capacity, and executive reporting across the web platform.

ReactNode.jsMongoDBReact QueryChart.jsAG Grid
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Product system

Assessment, Strapi content, learning, and AI workflow

Reliable recurring workflowNext.js 15 / React 19

Assessment and learning platform

Tech Career Assessment

Challenge

Extend a broad Next.js and Strapi product across authenticated roles, external candidates, SCORM content, AI providers, and migration-heavy backend operations.

Solution

Built assessment and candidate workflows, extended the Strapi 4 backend and admin dashboard, developed AI learning and recruiter tools, and delivered SCORM and program operations.

Impact

Connected assessment results to administration, learning delivery, program reporting, and assisted career workflows for internal and external users.

Next.js 15React 19TypeScriptStrapi 4PostgreSQLOpenAI
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Data product

Wearable ingestion, live gameplay, timers, and analytics

Decision-ready informationTypeScript / Node.js

Wearable basketball analytics

JSleeve

Challenge

Extend existing session, socket, and job foundations with idempotent ingestion and concurrency-safe gameplay without implying broad frontend ownership.

Solution

Built the newer ingestion, calibration, game lifecycle, Redis timer, analytics, notification, and cross-module account-consistency behavior.

Impact

Established reusable real-time services for personalized shot analysis and reliable competitive game progression.

TypeScriptNode.jsMongoDBSocket.IORedisAgenda
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Commerce flow

Booking, payment, delivery, payout, and review lifecycle

From discovery to deliveryNext.js 15 / React 19

Mining services marketplace

Mining Access

Challenge

Build the core booking and payment domains while integrating them into an existing collaborative Next.js frontend and several external services.

Solution

Built the listing and booking backend, payment-aware delivery lifecycle, Stripe Connect flows, dashboards, moderation, reviews, media, and mapping integrations.

Impact

Delivered the core marketplace domains and integration paths needed for buyer, provider, and administrator workflows.

Next.js 15React 19Express 5MongoDBStripe ConnectGoogle Maps
Read project notes

Project archive

Earlier work

Additional products spanning commerce, company platforms, and Web3 experiments.

Digital asset discovery

RareFnd

Built React interfaces for public-facing discovery and blockchain-adjacent product flows.

ReactWeb3Cryptocurrency
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Corporate platform

Netrosol

Built Laravel and MySQL-backed pages with responsive Bootstrap interfaces.

PHPLaravelMySQLBootstrap
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Crowdfunding platform

Netrocrowd

Built Laravel-backed crowdfunding flows with payment gateway integration.

PHPLaravelMySQLPayment Gateway
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Seller commerce system

GuildSt

Built a Next.js and Node.js integration layer for Etsy listing import, digital closet management, and Stripe-powered commerce flows.

TypeScriptNext.jsNode.jsMongoDB
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Franchise operations platform

Anfa E-Franchise

Delivered MERN stack interfaces and APIs for business process workflows.

ReactNode.jsExpress.jsMongoDB
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Decentralized exchange

Dex Noonswap

Built React and Web3 interfaces around token swapping and wallet-connected transaction flows.

ReactSolidityWeb3.jsEthereum
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Template commerce marketplace

Get Landing View

Built browsing, selection, purchase, and wallet-connected flows across React, Node.js, and MongoDB.

ReactNode.jsMongoDBCrypto
Read project notes

Engineering Principles

How I think when the system has to last.

Start with the failure mode

I like to understand what can break first: billing retries, vendor downtime, tenant isolation, data drift, and unclear operational ownership.

Make integrations boring

Third-party APIs should be wrapped with predictable states, retries, logs, and boundaries so product teams are not debugging vendor behavior every week.

Design for the next maintainer

Clear data models, named responsibilities, and small interfaces matter more than clever code when a system has to survive real users.

Protect the product loop

Architecture is useful when it helps the business ship faster, observe issues sooner, and make changes without risking the whole product.

Experience

From implementation details to production ownership.

Ropstam Solutions Inc.

Lahore, Pakistan

Assistant Team Lead MERN

Dec 2024 - Present

MERN Stack Developer

Mar 2024 - Dec 2024

Owns production features across SaaS, integrations, and cloud-backed delivery while coordinating closely with stakeholders and engineers.

  • Planned requirements with stakeholders and translated ambiguous product needs into buildable implementation paths.
  • Built React and Redux interfaces, Node/NestJS services, MongoDB models, and third-party API integrations.
  • Improved deployment and email infrastructure by moving product mail flows toward AWS SES.

Netrosol

Lahore, Pakistan

Team Lead (MERN Stack)

Sep 2022 - Feb 2024

MERN Stack Developer

May 2021 - Sep 2022

Delivered MERN and Laravel systems across commerce, crowdfunding, company platforms, and Web3 product surfaces.

  • Designed REST APIs, database models, and responsive application interfaces across multiple client products.
  • Established maintainable implementation patterns through reviews, standards, and developer mentoring.
  • Resolved integration and delivery issues across cross-functional project teams.

Zen of Ruby

Lahore, Pakistan

React Developer Intern

Nov 2019 - Mar 2020

Built early production discipline through React application work, code reviews, Git workflows, and agile delivery practice.

  • Worked with senior engineers on React interfaces and application testing.
  • Practiced Redux, npm, Git, Scrum, and Kanban workflows in a professional development environment.

Tech Stack

Tools grouped by the systems they help ship.

Product UI

ReactNext.jsTypeScriptVue.jsReduxTailwind CSSAnt Design

API & Platform

Node.jsExpress.jsNestJSStrapiREST APIsSocket.IOLaravel

Data

MongoDBPostgreSQLMySQLRedisFirebase

Integrations

StripePayPalName.comZoho MailGTFSOpenAIAnthropic

Cloud & Delivery

AWSAWS SESDockerFirebase FCMGitHubCI/CD

Writing

Engineering notes from integration-heavy product work.

Note 01

Reliable integrations are product infrastructure

A vendor API is not just an endpoint. It is a contract, a queue of failure states, and a support surface your users eventually feel.

Note 02

Multi-tenant systems need boring boundaries

The best tenant architecture is the one that makes the unsafe path hard to express in code and easy to catch in review.

Note 03

Senior delivery is reducing ambiguity

The work is not only writing the feature. It is finding the hidden decisions, naming tradeoffs, and turning a fuzzy goal into a path the team can trust.

Contact

Have a product or role where senior ownership matters?

I am open to remote senior full-stack software engineering opportunities with global teams building scalable SaaS platforms, APIs, integrations, and data-backed products.

Mubashir Hussain wearing a light suit, seated in a lounge chair
mubashir@mubashirhussain.dev

Islamabad, Pakistan

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