David Z.
Senior Ruby on Rails Developer
Experience
Jun 2025 - Present
6 monthsCanada
Senior Ruby on Rails Developer
Beneva
- Led a multi-phase upgrade of an internal insurance platform from Ruby on Rails 4.2.6 to 8.0.2 and migrated to PropShaft and Passenger.
- Refactored legacy Ruby/Rails code to modern conventions, reducing tech debt and improving readability.
- Repaired and modernized the RSpec test suite, stabilizing CI and cutting flaky failures.
- Implemented CI/CD in Jenkins, enabling consistent deployments and faster feedback for the team.
Nov 2020 - Jan 2025
4 years 3 monthsCanada
Backend Ruby on Rails Developer
Petal
- Led the data storage design for a high-impact feature that repurposed unbooked availabilities into alternate services, optimizing data handling for performance and scalability.
- Proposed and implemented an internal availability log tracking tool on the admin dashboard, enabling visibility into booking and release events across systems; reduced support and debugging time by over 50%.
- Improved a 3-second request performance to under 2 seconds by optimizing database calls and enhancing Elasticsearch structure.
- Designed and developed RESTful API endpoints to support core product features, ensuring reliability, scalability, and alignment with front-end requirements.
Jun 2019 - Nov 2020
1 year 6 monthsCanada
Full-Stack Developer
Dreeven Technologies Inc.
- Built and maintained modular front-end components (layouts, forms, modals) in a construction project management SaaS platform.
- Worked with UI designers to align backend capabilities with UI needs, translating Figma designs into functional Angular components.
- Contributed to the full development cycle: feature design, testing, deployment, and monitoring.
- Streamlined DevOps using Jenkins CI/CD pipelines and AWS cloud infrastructure.
Summary
Senior developer with 6 years' experience, specialized in Ruby on Rails and Vue.js, with a strong track record in insurance, health tech, construction and tech startups.
Passionate about building scalable web applications and solving complex engineering challenges.
Languages
Chinese
NativeEnglish
AdvancedFrench
AdvancedEducation
Sep 2021 - Dec 2024
University of Quebec at Montreal
Bachelor's degree · Computer Science and Software Engineering · Montreal, Canada
Sep 2015 - Jun 2018
Vieux Montreal CEGEP
College Diploma · Computer Techniques · Montreal, Canada
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