Bruz Marzolf
Verified Expert in Engineering
Back-end Developer
Snohomish, WA, United States
Toptal member since January 14, 2016
Bruz is a full-stack developer who has loved building things for the web since he first started doing it over 15 years ago. Bruz has spent a lot of time on the back end building services with Ruby and Elixir and working with databases and infrastructure but has also done substantial work on the front end building apps in JavaScript.
Portfolio
Experience
Availability
Preferred Environment
Git, MacOS, Visual Studio Code (VS Code), Terminal
The most amazing...
...project I've worked on involved leading the development of a complex back end that scaled to millions of users, plus working on the sophisticated front end.
Work Experience
Self-employed
Bruzilla Development
- Built a mobile app for a niche market, with a beta release to hundreds of users with excellent feedback and a recent launch to production.
- Developed the mobile app in TypeScript quickly, leveraging React, Ionic, and Capacitor.
- Implemented a fully offline mobile experience to provide excellent security and privacy while allowing a cloud backup and restore option.
Staff Software Engineer
Inkarnate
- Led all back-end development, including infrastructure, database design, and the API.
- Built an entirely new API using Elixir to facilitate scaling up the product and enabling new capabilities and seamlessly transitioned a large user base over to it.
- Developed significant features in the complex front-end app using React and TypeScript.
Senior Software Engineer
Habit
- Built new features, working across the Ruby on Rails back end and React front end.
- Implemented a data analysis pipeline used to provide personalized results for users based on their lab results.
- Added efficient and comprehensive testing methodologies to allow validation of highly personalized user results.
Freelance Web Developer
Fat Cork
- Built the initial eCommerce site for the business using a framework to quickly get to market.
- Overhauled the initial eCommerce app to provide a custom back-end interface that better matched their business.
- Included a high level of unit test coverage for the complex business logic in the overhauled app, and a large end-to-end test suite to provide high confidence when making changes.
- Proactively monitored issues with the site and fixed them.
- Managed email accounts and other IT needs of the company.
Back-end Ruby on Rails Engineer
Clustrix (via Toptal)
- Optimized memory usage extensively to operate within a relatively small memory footprint.
- Redesigned various database-intensive operations to greatly improve performance while still maintaining the same simple API.
- Rewrote a key multi-threaded background process to improve speed and reliability.
- Wrote and maintained Bash utilities used by customers to maintain their installations.
- Added an API annotation system that provided both parameter validation as well as API documentation.
Senior Front-end Engineer
Luno (via Toptal)
- Created various new user interfaces in a sophisticated React stack that used state management with Redux, universal rendering, and data fetching.
- Implemented the form handling system used throughout the app.
- Supported a new UI with unit tests for the React components.
Senior Software Engineer
AmpX²
- Led the development of the main Ruby on Rails/Backbone.js customer-facing web app.
- Built 11 Ruby microservices to support various new features.
- Helped transition to a Docker infrastructure from a monolithic application.
- Built a service to package microservices with Docker, streamlining the deployment pipeline.
- Led the development of the web apps for three new rapidly-developed products.
Lab Manager
Institute for Systems Biology
- Developed and supported web applications for lab workflows, primarily using Ruby on Rails.
- Created data analysis pipelines using the R statistical language.
- Built image analysis tools using Java to support novel research techniques.
- Performed data analysis on data sets for various researchers.
- Demonstrated strong writing skills, authoring journal publications, grant applications, and internal documentation.
Experience
Fat Cork
https://fatcork.comMoment Prints
My Flare
Education
Bachelor of Science Degree in Biochemistry
Western Washington University - Washington, USA
Skills
Libraries/APIs
React.js, REST API, JavaScript
Tools
Git, Terminal, Capacitor
Languages
Ruby, JavaScript, Elixir, TypeScript, Python, CSS, R, Java, SQL, Bash
Frameworks
Ruby on Rails, Phoenix, Tailwind CSS, Ionic
Storage
PostgreSQL, Redis, MySQL, SQL, SQLite
Paradigms
Object-oriented Programming (OOP), Functional Programming, Database Design
Platforms
AWS, Docker, Linux, DigitalOcean, Heroku, MacOS, Visual Studio Development
Other
Back-end Developers, Front-end, APIs, Full-stack, Intuit QuickBooks, Graphs, Computer Vision, Supabase, Biochemistry
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring