Senior Full Stack Engineer

Muhammad Mohsin Ali

I build enterprise SaaS platforms, payment systems, and multi-tenant architectures with Laravel & Python/FastAPI & Vue.js — engineered to scale under real-world load.

  • 📍 Lahore, Pakistan
  • 🌐 Open to Remote (US / UK / EU / ME)
  • 🧭 6+ years experience
View Case Studies Get In Touch
6+Years Experience
~40%API Perf. Gains
5Enterprise Platforms
3Payment Gateways Integrated

About

Backend-first, built for scale

I'm a Senior Full Stack Engineer with 6+ years of experience building enterprise SaaS platforms, payment systems, and multi-repo microservice architectures. I currently lead backend development of Debtia, a multi-tenant debt collection platform built on Lucid Architecture with Stripe, Chargify, and Farpay payment integrations, Laravel Horizon queue systems, and Microsoft Business Central ERP sync.

I have a proven record of delivering ~40% API performance improvements, automating high-volume operational workflows, and integrating complex third-party systems — CRMs, ERPs, and payment gateways. I architect solutions that reduce operational overhead and hold up under real production load. I'm actively seeking Senior Full Stack or Backend Engineer roles, remote (US / UK / EU / Middle East) or on-site in Pakistan.

Skills

Technical toolkit

Backend

PHP 8.xLaravel 9/10CodeIgniter PythonFastAPI RESTful APIsLaravel HorizonQueue Workers Scheduled JobsTask Scheduler

Frontend

Vue.js 3JavaScript (ES6+)HTML5 CSS3BootstrapjQuery / Ajax Blade Templating

Database

MySQLPostgreSQLRedis Query OptimizationDatabase Architecture

Cloud & DevOps

AWS (EC2, S3, RDS)DockerGit CI/CDLinuxNginx

Architecture

Lucid ArchitectureMicroservicesMulti-tenancy API DesignEvent-drivenMVC Caching Strategies

Integrations

StripeChargifyFarpay SendGridHubSpotSphereMAIL MS Business Central

Experience

Where I've worked

  1. Senior Full Stack Developer · TechScale (Debtia)

    Feb 2021 — Present

    Lahore, PK · Enterprise Debt Collection SaaS

    • Led full-stack development of a multi-repo, multi-tenant platform built on Lucid Architecture, serving creditors, debtors, and government-level institutions.
    • Built the Payments repository unifying Stripe, Chargify, and Farpay behind one abstraction layer, with automated retry logic on failed payments.
    • Designed queue-driven communication workflows (SendGrid, Laravel Horizon) processing thousands of jobs independently per queue.
    • Cut API response times by ~40% through Redis caching, N+1 elimination, and Eloquent eager loading.
    • Reduced manual operational overhead by ~60% with a Laravel Task Scheduler driving reminders, reconciliation, and case updates.

  2. Full Stack Developer · Yumyapps (Family Time)

    Apr 2020 — Feb 2021

    Lahore, PK · Parental Control SaaS

    • Contributed to a multi-repo platform (CRM, marketplace, parent/child mobile apps) on Laravel + Vue.js, hosted on AWS EC2/S3.
    • Built subscription billing with automated feature provisioning on successful payment.
    • Developed the RESTful API backend powering both mobile apps, with documented contracts for parallel development.

  3. Full Stack Developer · VolgoPoint International

    Aug 2019 — Mar 2020

    Lahore, PK · B2B Classified Marketplace

    • Co-developed a B2B classifieds platform from scratch (team of 4), delivered on schedule in 6 months.
    • Improved page load speed ~50% under traffic spikes via server-side caching and query optimization.
    • Established a feature-flagging/release workflow that cut production incidents by 35%.

  4. Full Stack Developer · Upgenics International

    Apr 2018 — Jun 2019

    Lahore, PK

    • Automated 80% of manual client onboarding on the PhoneCheck Marketplace Implementation Portal (Laravel).
    • Shipped 8+ internal modules and resolved 30+ change requests within SLA at 99%+ uptime.
    • Built web service integrations enabling real-time device verification for 500+ partners.

  5. Junior Web Developer · Innovative IT Solution

    Oct 2017 — Feb 2018

    Lahore, PK

    • Built a multi-branch POS system (CodeIgniter) across 3 retail locations.
    • Developed custom WordPress plugins for eCommerce clients.

Projects

Case studies

These platforms are proprietary enterprise products, so code isn't public — the summaries below focus on the problem, my role, and measurable outcomes.

Debtia

Enterprise SaaS

Senior Full Stack Developer — Feb 2021–Present

Problem: Government and enterprise creditors needed a configurable, multi-tenant debt collection system spanning onboarding, negotiation, payments, and legal correspondence.

Solution: Built the platform on Lucid Architecture across independently deployable repos — Debt Cases, Payments (Stripe/Chargify/Farpay), Communication (Horizon queues), Print & Letter automation, and ERP/CRM sync (MS Business Central, HubSpot, SphereMAIL).

Impact: ~40% faster APIs, ~70% faster letter processing, ~60% less manual operational overhead.

LaravelLucid ArchitectureStripeHorizon

Family Time

Consumer SaaS

Full Stack Developer — Apr 2020–Feb 2021

Problem: A parental-control product needed a CRM, marketplace, and REST API backend supporting separate parent and child mobile apps.

Solution: Built tiered subscription billing with automated feature provisioning, a documented API contract for parallel mobile/web development, and an admin CRM for support workflows.

Impact: Reduced support ticket resolution time; increased ARPU through marketplace upsell flows.

LaravelVue.jsAWSREST API

VolgoPoint Marketplace

B2B Platform

Full Stack Developer — Aug 2019–Mar 2020

Problem: Launch a B2B classifieds marketplace from zero, on a fixed 6-month timeline, with a small 4-person team.

Solution: Implemented server-side caching and query optimization for traffic spikes, plus a feature-flagging and release process to de-risk deploys.

Impact: Shipped on schedule; ~50% faster page loads under load; 35% fewer production incidents.

LaravelCachingFeature Flags

PhoneCheck Portal

Enterprise Portal

Full Stack Developer — Apr 2018–Jun 2019

Problem: Manual client onboarding was slow and error-prone; the implementation portal needed automation and a real-time device verification API for partners.

Solution: Automated onboarding requests, shipped 8+ internal modules, and built the integration layer for the PhoneCheck mobile app.

Impact: Automated 80% of onboarding; enabled real-time verification for 500+ partners at 99%+ uptime.

LaravelWeb ServicesAPI Integration

Education

Academic background

B.S. (Hons.) Computer Science

Lahore Garrison University · 2012 — 2016

Contact

Let's build something reliable

Open to Senior Full Stack / Backend Engineer roles — remote (US / UK / EU / ME) or on-site in Pakistan.

amohisn980@gmail.com LinkedIn GitHub +92 316 465 2024