01 — About
The person behind the code.
I'm Nisar Ahmad, a Senior Full Stack Laravel Developer based in Rawalpindi, Pakistan, with 4+ years building production SaaS platforms, multi-tenant applications, and enterprise integrations. I work across Laravel, PHP, Livewire, Filament, and Vue.js — and I care as much about the queue architecture and Redis tuning behind the scenes as I do about the interface in front of a user. I've resolved production incidents at scale, load-tested systems to 4,000 concurrent requests, and shipped payment integrations across four gateways. Outside of shipping code, I'm usually deep in a performance benchmark or writing the Artisan command that saves the next engineer an afternoon.
Experience
Senior Full Stack Developer
Apr 2024 – PresentExcelorithm LLC · Rawalpindi, Pakistan
Leading architecture on a multi-tenant SaaS invoicing platform — tenant isolation, Zoho CRM/Books integrations, and production performance engineering at scale.
- Led architecture and development of a multi-tenant SaaS invoicing platform in Laravel/Livewire with tenant isolation, RBAC, and a horizontally scalable backend supporting hundreds of client invoices.
- Owned end-to-end Zoho CRM/Books integration using REST APIs, Deluge script, webhooks, and fault-tolerant synchronization for clients, taxes, invoices, credit notes, and payments.
- Designed async processing with Laravel queues, background jobs, Redis caching, and Rappasoft Livewire Tables dashboards to improve throughput and API performance under production load.
- Resolved critical production incidents including MySQL error 1615, and cut DomPDF invoice output from 300KB to 30KB (~90%), improving delivery speed.
- Established performance benchmarks with K6/Grafana, validating platform stability at 4,000 concurrent requests before production releases.
- Owned Linux server operations, CI/CD pipelines, deployment automation, and observability (Sentry, GlitchTip, Open Replay, Clarity, ntfy).
PHP & Laravel Developer
Jan 2022 – Apr 2024ITLinked · Dera Ismail Khan, Pakistan
Delivered production Laravel/Vue.js applications across fintech, e-commerce, and healthcare, including a payment layer spanning four gateways and a solo-built Dental Lab Management System.
- Delivered production Laravel/Vue.js applications across fintech, e-commerce, and healthcare with secure REST APIs, MVC architecture, and maintainable codebases.
- Architected a payment integration layer across four gateways (SADAD, PayTabs, Tabby, Stripe) with reconciliation, error handling, and transaction security controls.
- Led solo development of the Dental Lab Management System from requirements to deployment, including RBAC, workflow automation, audit trails, and ZATCA e-invoicing compliance.
- Implemented Google Maps API logistics tracking and real-time processing for high-availability fintech workflows; managed production hosting on Hostinger, SiteGround, and GoDaddy.
Education
Bachelor of Science, Computer Science
Gomal University
Master of Science, Computer Science
Gomal University
Skills
Languages
PHP, JavaScript, HTML5, CSS3, SQL
Laravel Stack
Laravel, Eloquent ORM, Blade, Artisan, Middleware, Queues, Jobs, Events
Frameworks
Livewire, Filament, Vue.js, Inertia.js, Laravel Permission, Laravel Tenancy
Architecture
Multi-Tenant SaaS, RBAC, RESTful APIs, Webhooks, System Design
Databases
MySQL, Redis, Query Optimization, Indexing, Prepared Statements
Integrations
Zoho CRM/Books, Deluge Script, Google Maps API, Twilio, Msegat
Payments
Stripe, PayPal, PayTabs, SADAD, Tabby
DevOps & Tools
Linux, SSH, CI/CD, Docker, Git, Jira, DomPDF
Testing & Monitoring
K6, Grafana, Postman, Sentry, GlitchTip, Open Replay, Clarity