Zaryab Ahmed

Full-Stack Software Engineer

Professional Summary

Full-Stack Software Engineer with 20+ years of experience building scalable, high-performance web applications for international companies and global clients. Expertise across backend, frontend, cloud, DevOps, and microservices architecture, with a strong focus on SaaS platforms, Email & SMS marketing systems, and large-scale data processing.

Career Objective

To continue growing as a senior IT professional by applying deep technical expertise to build secure, scalable, and resilient software solutions. I aim to work on impactful products, contribute to architectural decisions, mentor teams, and continuously adapt to evolving technologies and business needs.

Experience

Lightfoot Global — Senior Software Engineer (Remote)

May 2019 – July 2025

Developed and supported SaaS Email and SMS Marketing platforms and a high-performance Lead Generation system handling billions of records. Served as Product Owner for SMS and LeadGen platforms, led feature roadmaps, mentored engineers, and managed production infrastructure and DevOps operations.

Eagle6 — Full-Stack Developer (Remote)

Feb 2018 – May 2019

Collaborated closely with designers and product owners to convert business requirements into epics, user stories, and production-ready features. Implemented responsive, high-performance applications using Angular and Java, ensuring usability and scalability.

Worked with Neo4j graph databases, developed business process modules, and contributed to workflow-engine-like components that enhanced system flexibility and performance.

Lightfoot Media — Senior Software Engineer (Remote)

Oct 2012 – Jan 2018

Developed and maintained a large-scale Email Marketing platform using Agile methodology. Worked across frontend (HTML, CSS, JavaScript, AngularJS) and backend (PHP CodeIgniter, Node.js, MySQL, MongoDB). Built RESTful APIs, enhanced core modules, and managed Linux servers using Python and Bash scripting.

Integrated PowerMTA for high-volume email delivery, implementing virtual MTAs, throttling, campaign scheduling, and performance tuning. Built detailed reporting modules tracking deliveries, opens, clicks, bounces, and live MTA statistics. Designed comprehensive Admin and User Panels for system and campaign management.

In 2014, led the migration from a PHP/MySQL monolith to a Node.js + MongoDB microservices architecture, including RabbitMQ-based asynchronous processing. Completed the migration within three months, significantly improving scalability and maintainability.

Sorcim Technologies — Senior Software Engineer

July 2009 – July 2010

Worked directly with clients and project managers to deliver tailored web and desktop applications. Developed solutions across multiple domains including printing portals, medical applications, social networking, and entertainment platforms. Built functional prototypes, collaborated closely with designers, contributed to the Innowaiter POS desktop application, and developed Facebook quiz applications.

Binary Logix — Software Engineer (Contract)

October 2008 – August 2009

Completed and delivered the Mangla Cantonment Board (Pakistan) software project. Successfully met deadlines, deployed the system on-site, trained staff for one week, maintained client websites, conducted testing, and reported directly to clients and the CEO.

Aspire Solutions — Web Developer (Contract)

July 2008 – October 2008

Designed and developed SMS-based web applications, including a Twitter-like platform with integrated SMS features. Collaborated with clients and project managers, conducted testing and validation, and ensured reliable message handling and performance.

Sorcim Technologies — Software Engineer

January 2008 – June 2008

Worked on web and desktop applications, independently developing a large-scale PHP project. Integrated AWS services (S3, EC2), developed browser add-ons, built APIs for browser integrations, and assisted with bug fixes in C# desktop applications.

Alfa Labs — Software Engineer (Part-Time)

November 2003 – October 2007

Worked on an in-house Laboratory Management System using Classic VB and ASP. Supported migration to .NET, introduced AJAX-based performance improvements, enhanced reporting modules, developed inventory and doctor panels, contributed to system rewrites, and supported C# finance applications and lab networking.

Freelance Full-Stack Developer — Global Clients

Since Aug 2009

Delivered medium- to large-scale web applications for clients across the US, Europe, and Asia. Worked end-to-end on product development, from UI design to backend architecture and production deployment.

Key contributions include designing and developing web applications, e-commerce platforms, trading systems, daily deals platforms, and social networking websites. Built custom admin panels, reporting dashboards, plugins, and REST APIs tailored to client requirements. Integrated third-party services such as SendGrid, Twilio, Stripe, Zapier, Mailchimp, AWS, GCP, and Atlassian tools.

Handled DevOps responsibilities including VPS setup, cloud infrastructure, CI/CD pipelines, automated deployments using Python and Bash scripting, and performance optimization through database tuning and caching strategies. Delivered solutions across industries including real estate, finance, healthcare, marketing, food services, and e-commerce.