Alexei is available for hire
Hire AlexeiAlexei Darmin
Verified Expert in Engineering
Sagas Developer
Location
Toronto, ON, Canada
Toptal Member Since
August 7, 2020
Alexei is an entrepreneurial front-end developer specializing in the React ecosystem of tools adept at building products that have global-scale reach. He has a proven history of using his exceptional product and business sense to lead initiatives that save businesses significant time and money.
Portfolio
GroupBy
Sagas, Redux, React, TypeScript, JavaScript
Archon Systems
Sagas, Redux, React, TypeScript, JavaScript
Cofounder
Redux, React, JavaScript
Experience
Availability
Part-time
Preferred Environment
Slack, MacOS
The most amazing...
...moment in my career so far was receiving a signed letter of intent by a New York-based hedge fund to acquire the company I cofounded.
Work Experience
Lead Front-end Developer
2019 - 2020
GroupBy
- Led a team of three front-end developers working on multiple project features simultaneously at any given time.
- Negotiated a raise to the salary floor of all junior developers in the org of 100+ people.
- Built client-side support of locking on CRUD operations of resources.
- Built a logging dashboard to audit user actions on resources.
Technologies: Sagas, Redux, React, TypeScript, JavaScript
Front-end Developer
2017 - 2019
Archon Systems
- Led the development of five project features, coordinating with other teams as needed to deliver them.
- Built app-wide support for large numbers to bypass JavaScript's 64-bit limitation on the floating-point data type.
- Created a suite of input components (inputs, dropdowns, autocompletes, and modals).
- Created an API-generated front end for a hackathon that greatly decreased a project's estimate, resulting in that project being fast-tracked to completion months ahead of schedule.
Technologies: Sagas, Redux, React, TypeScript, JavaScript
Software Developer
2016 - 2016
Cofounder
- Led a team of students to build a financial dashboard that resulted in a signed letter of intent to be acquired by a New York-based hedge fund.
- Developed an algorithm to continuously and efficiently query the Twitter API across thousands of topics optimized for the maximum data transfer and fewest calls made.
- Integrated customizable dashboard tooling that allowed users to build their own dashboard.
Technologies: Redux, React, JavaScript
Software Developer
2015 - 2016
Drivein Median
- Pitched, designed, and developed a CMS for a drive-in chain that received hundreds of Facebook likes/comments and continues to power their business four years later.
- Automated away 200 hours of yearly administrative updates.
- Reduced page load time from 20 seconds down to three seconds.
Technologies: PHP, CSS, HTML, JavaScript
Front-end Developer
2013 - 2016
Superscope Media Inc.
- Built dozens of websites across diverse industries such as health, beauty, construction, and film.
- Wrote a PHP script to generate HTML from parsed files reducing seasonal update times by 90%.
- Served as the primary on-call support ensuring timely response to production bugs.
Technologies: jQuery, PHP, JavaScript, CSS, HTML
Experience
StockRender
A JS-based application that combined social sentiment and traditional financial data for investors to use for actionable trading signals. I contributed to both the back and front end. On the back end, I built a querying engine to continuously collect data from the Twitter API for a set of stocks trading on the NYSE. On the front end, I integrated support for a tool that allows users to build highly customized dashboards and sync up various tabs to track the same stock. This resulted in us receiving a signed letter of intent to be acquired by a New York-based hedge fund.
Skills
Libraries/APIs
React, React Redux, Node.js, jQuery
Languages
JavaScript, HTML, CSS, TypeScript, PHP
Frameworks
Redux
Other
Sagas
Tools
Git, Slack
Platforms
MacOS
Education
2011 - 2016
Bachelor of Science Degree (Honors) in Computer Science
University of Toronto - Toronto, Ontario, Canada
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