Hassan Z.

About Me

Hassan is a Senior Full-stack Developer who specializes in the design and development of web applications, server management, and deployment using HTML, CSS, JavaScript, React.js, MySQL, PostgreSQL, Linux, and Ruby on Rails. He builds visually appealing and functional web applications, helping startups and businesses with reliable and robust products and solid UX. Hassan works in globally distributed teams and liaises with designers, developers, project managers, and QA engineers.

AI, ML & LLM

Frontend

Backend

Node.js Express.js

Database

Other

Work history

UpStack
UpStack
Senior Software Engineer
2018 - Present (7 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Spontivly
Spontivly
Senior Full-stack Developer
2021 - 2022 (1 year)
Remote
  • Worked on developing simple no-code dashboards for the modern team.

  • Wrote new and maintained current APIs written in Ruby on Rails.

  • Implemented new and improved previously implemented UIs using React.js.

Beat The Gym
Beat The Gym
Senior Software Engineer
2019 - 2021 (2 years)
Remote
  • Built and maintained a full-fledged web application for users to schedule, book, pay for, review, and manage fitness activities.

  • Updated and maintained RoR and React.js applications and built iOS/Android apps from scratch.

  • Worked on DevOps management and designed tools for systems to meet business requirements.

EventRay
EventRay
Senior Web Designer
2018 - 2018
Remote
  • Maintained and implemented new UIs and built a complete image editor for attendee badge designing using Konva.js.

  • Handled third-party integrations and ensured app efficiency.

  • Optimized website for maximum speed and scalability, increasing landing page lead onboarding by 30% and reducing churn rate by 50%.

CorkCRM
CorkCRM
Senior Software Engineer
2015 - 2019 (4 years)
Remote
  • Re-developed the complete application in React.js from Rails ERB files.

  • Maintained, improved, and upgraded the RoR back end.

  • Improved the product as a whole.

WAI Global
WAI Global
Data Analytics Engineer
2014 - 2015 (1 year)
Remote
  • Drove analytical projects that spanned all products sold on eCommerce stores (eBay and Amazon).

  • Implemented an analytics tool to compare prices of all the parts the company was dealing in with competitor’s listings, updating and adjusting the pricing automatically for WAI’s listings.

  • Designed architecture and prototype solutions for data processing and methodology to optimize search engine protocols of the company's products and eCommerce stores.

  • Backed up all company data and sales data.

Elit Square
Elit Square
Web Designer & Developer
2013 - 2013
Remote
  • Designed and developed the web application for Elit Square using React.js, as well as client apps worldwide.

  • Designed a common set of technology capabilities across assessment, planning, design, and implementation for code quality reviews and optimization.

  • Provided technical support for Linux-based server management and product deployment.

Showcase

Senior Software Engineer - CorkCRM
Senior Software Engineer - CorkCRM
  • Re-developed the complete CorkCRM application, a CRM for painting contractors, in React.js from Rails ERB files

  • Maintained, improved, and upgraded the Ruby on Rails backend to enhance the overall product

  • Helped integrate various functionalities such as lead management, proposal sending, job progress tracking, invoice processing, and feedback requests into the CorkCRM app

Senior Full-stack Developer - Spontivly
Senior Full-stack Developer - Spontivly
  • Spontivly tools simplify no-code dashboard development and data visualization for various teams including sales, marketing, customer support, and product innovation.

  • As a Senior Full-stack Developer, worked on writing new and maintaining current APIs in Ruby on Rails.

  • Implemented and improved UIs using React.js, ensuring efficient application performance.

Senior React Engineer - EventRay
Senior React Engineer - EventRay
  • Senior React Engineer for EventRay - a tool managing and listing ongoing events, enabling sharing of event details with attendees.

  • Work included maintaining and implementing user interfaces, and creating a built-in image editor for custom event attendee badge design.

  • Managed and handled third-party integrations.

Senior Developer - Beat The Gym
Senior Developer - Beat The Gym
  • BTG is a platform that enables fitness instructors to list their activities and allows fitness enthusiasts to book these events.

  • The developer updated and maintained Ruby on Rails and React.js applications as part of the project.

  • Additionally, the developer built iOS/Android apps from scratch and was responsible for DevOps management.

Web Designer & Developer - Elit Square
Web Designer & Developer - Elit Square
  • Provided full-stack consultancy services

  • Worked on both front-end and back-end web applications

  • Role held: Web Designer & Developer at Elit Square

Education

Education
BSc Computer Science
NUCES-FAST - Pakistan
2011 - 2015 (4 years)