David Kwesi QuarshieFullstack Software Engineer (Python / Django / Laravel / React)
Summary

High-performing Fullstack Software Engineer with over 3 years of experience architecting and scaling complex, multi-tiered web applications and healthcare pipelines. Deep technical expertise in Python (Django), PHP (Laravel), React/Next.js, and AWS cloud infrastructure. Track record of reducing system latency by 99%, managing 20+ client applications, and serving on technical hiring panels.

Skills
Backend

Python (Django), PHP (Laravel), Node.js, PostgreSQL, MySQL, RESTful APIs, Relational Schema Design

Frontend

React, Next.js, JavaScript (ES6+), HTML5/CSS3, Tailwind CSS, Ajax, Bootstrap

Cloud & DevOps

AWS (EC2, S3, Elastic Beanstalk), Apache Airflow, CircleCI, Hostinger, Vercel, Docker, Git, cPanel

Tools & Process

Bitbucket, Jira, Postman, DNS/SSL Management, Payment Integration (Paystack), API Integration, Email Integration (SendGrid, MailJet, PHPMailer)

Professional Experience

Fullstack Software Engineer

InstantRad
September 2024 – Present | Remote
  • •Eliminated a critical performance bottleneck, reducing PACS-to-web study sync latency from 9 minutes to <5 seconds by auditing legacy PostgreSQL queries and optimizing database execution logic—directly enabling higher user activity and platform throughput.
  • •Engineered core backend modules and clinical features for a Radiology Integrated System (RIS) using Python (Django) and PostgreSQL, alongside dynamic web interfaces (HTML/CSS/JS) for seamless DICOM image workflows.
  • •Accelerated software delivery and code reliability within an Agile environment, leveraging Bitbucket, Jira, and CircleCI automated testing pipelines to deploy stable, high-reliability production code.
  • •Drove customer retention and technical support, conducting live product onboarding demos, troubleshooting end-user issues, and hopping on calls with clinical clients to assist with product setup.
  • •Interviewed and evaluated technical talent during a 6-month engineering hiring cycle, assessing candidate skill sets to help scale the engineering team.

    • Fullstack Software Engineer / Tech Lead

    SimpliExpand
    November 2023 – October 2024 | Remote
  • •Promoted to Tech Lead and Sole Backend Engineer, architecting an API-first Insurance Platform (Glico) using Laravel (PHP), MySQL, and React —implementing multi-tiered Role-Based Access Control (RBAC) across Client, Admin, and Super Admin roles with integrated Paystack payment gateways and SendGrid email notifications.
  • •Engineered a custom Productivity & Project Management Suite (Jira clone), featuring client approval workflows, comprehensive user activity logging, and a secure, permissioned File Management System for cohort-level document access.
  • •Integrated Google Analytics API into custom user dashboards , giving clients real-time data visualization on domain performance, traffic metrics, and business conversions.
  • •Managed cloud infrastructure, DNS, and hosting operations across 20+ client web assets ; orchestrated zero-data-loss database and web migrations from cPanel to Hostinger while maintaining network security, A records, and SSL management.
  • •Mentored and guided a junior frontend engineer and developer intern through code reviews, backend API design, and web internationalization (i18n) best practices.

    • Fullstack Developer Intern

    Ashesi University
    June 2022 – January 2023 | Remote
  • •Co-developed an incubator tracking platform in a 3-person team using PHP, Ajax, and MySQL, designing relational database schemas from scratch to track startup project metrics, cohort counts, and performance indicators.
  • •Built interactive data visualization dashboards using JavaScript and Bootstrap to present key startup growth metrics and financial performance indicators to stakeholders.
  • •Collaborated via Git version control and Agile sprints, translating Figma UI/UX designs into responsive, cross-browser frontend components.
    • Education

    BSc in Computer Science

    Ashesi University
    October 2019 – June 2023
    Certificates
    1st Place — U7+ Student Challenge (University of Ottawa, Canada) (2023)
    2nd Place — Klangoo Fintech Challenge (2022)
    Certifications — SQL (Intermediate - HackerRank) , Python (HackerRank) , Advanced Google Analytics , Google IT Support Specialist