AeroLeads people directory · profile
Denis Tsoi Email & Phone Number
Co-Founder and CTO
at
preferrd.io
1 work email found
@preferrd.io
3 phones found area 526 and 973
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Co-Founder and CTO
Location
Hong Kong, Hong Kong SAR, United States
Company size
Who is Denis Tsoi? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Denis Tsoi is listed as Co-Founder and CTO at preferrd.io, a company with 7 employees, based in Hong Kong, Hong Kong SAR, United States. AeroLeads shows a work email signal at preferrd.io, phone signal with area code 526, 973, and a matched LinkedIn profile for Denis Tsoi.
Denis Tsoi previously worked as Staff Engineer at Mox Bank and App Release, Staff Engineer at Mox Bank. Denis Tsoi holds Fullstack Nanodegree from Udacity.
Company email context
Email format at preferrd.io
This section adds company-level context without repeating Denis Tsoi's masked contact details.
{first}@preferrd.io
89% confidence
AeroLeads found 1 current-domain work email signal for Denis Tsoi. Compare company email patterns before reaching out.
Profile bio
About Denis Tsoi
.
Listed skills include Javascript, Node.Js, Sass, Html 5, and 6 others.
Current workplace
Denis Tsoi's current company
Company context helps verify the profile and gives searchers a useful next step.
Preferrd.Io
17 roles
Denis Tsoi work experience
A career timeline built from the work history available for this profile.
Feb 2024 - Present
App Release, Staff Engineer
The engineer who presses the big red button.- Applies hotfixes, prod deployments and negotiating with appstores/vendors.
Jul 2022 - Feb 2024
Team Lead, Frontend App Services
Got proficient at releasing and responding to production incidents
Jan 2022 - Mar 2023
Senior Software Engineer, Frontend App Services
Committed code to improve developer experience
May 2021 - Jan 2022
Jul 2020 - May 2021
Personal Goal Pursuit
Career Break
- Learned to make bread- Graduated from Udacity Fullstack Nanodegree
Dec 2020 - Jun 2021
Software Engineer
In charge of development for B2C Insurance-comparison site using Nuxt/Vue, GraphQL. Actively contributed to feature development.Lead development of Enterprise React Native Application (0.60) for banking client. Includes touch-points with blackberry SDK.
Jul 2018 - Nov 2019
Software Engineer
AI powered audio transcription application. Built on Node/Python Tech stack on AWS/GCP infrastructure. Developed frontend app with React/Redux. Contributed to Open Source AI packages (Gentle). Improved CORE-API using Express/Sequelize & Postgresql.
Feb 2018 - Jul 2018
Software Engineer
IoT application for on-premise energy and compliance monitoring.Introduced npm, web pack. Lead application development and QA testing. Used PHP/Laravel Stack with Angular 1. Implemented Map UI using Mapbox-gl and mapbox/supercluster Improved data processing for Python scripts. Executed proof of concepts for company-wide presentations.
Dec 2016 - Feb 2018
Health And Well-Being
Career Break
Jul 2016 - Dec 2016
Developer
B2C Financial Research App for Institutional Investors. Frontend Developer using MEVN for SeedAlpha (Express, VueJS, NodeJS) using Scrum/Agile methodologies. Improved Elasticsearch queries. Distributed deployment using GIT & Docker.Lead Developer on OnyxBot, a Finance Chatbot, NLP: Wit.AI, Slack & Yahoo Finance API.
Jun 2014 - Jun 2016
Developer
Makible
B2C Ecommerce Store for 3D Printer Company using Golang, jQuery and SCSS, 5DPrint Chrome Extension App using ThreeJS STL Viewer, Golang HTTP Router
Jan 2014 - Jun 2014
Junior Web Developer
Notable Projects: Swire Properties, Pacific Place (Admiralty) Touch Table Interface. Web Development using AngularJS and NodeJS. Implemented SCSS for UI. Improved codebase for IE8 compatibility issues for B2C website.
Aug 2013 - Jan 2014
Senior Dealer
Acetop Precious Metals Limited
Dec 2011 - Aug 2013
Dealer
Acetop Precious Metals Limited
Mar 2011 - Nov 2011
Account Executive
Chancellor Precious Metals Limited
May 2010 - Mar 2011
4 education records
Denis Tsoi education
Fullstack Nanodegree
Udacity
Coding, Front End Web Development
General Assembly
Education record
Udacity
Ba, Economics
Lancaster University
FAQ
Frequently asked questions about Denis Tsoi
Quick answers generated from the profile data available on this page.
What company does Denis Tsoi work for?
Denis Tsoi works for preferrd.io.
What is Denis Tsoi's role at preferrd.io?
Denis Tsoi is listed as Co-Founder and CTO at preferrd.io.
What is Denis Tsoi's email address?
AeroLeads has found 1 work email signal at @preferrd.io for Denis Tsoi at preferrd.io.
What is Denis Tsoi's phone number?
AeroLeads has found 3 phone signal(s) with area code 526, 973 for Denis Tsoi at preferrd.io.
Where is Denis Tsoi based?
Denis Tsoi is based in Hong Kong, Hong Kong SAR, United States while working with preferrd.io.
What companies has Denis Tsoi worked for?
Denis Tsoi has worked for Preferrd.Io, Mox Bank, Career Break, Covergo | Insurtech, and Scribe Intelligence.
How can I contact Denis Tsoi?
You can use AeroLeads to view verified contact signals for Denis Tsoi at preferrd.io, including work email, phone, and LinkedIn data when available.
What schools did Denis Tsoi attend?
Denis Tsoi holds Fullstack Nanodegree from Udacity.
What skills is Denis Tsoi known for?
Denis Tsoi is listed with skills including Javascript, Node.Js, Sass, Html 5, Github, Wireframes, Project Management, and Copywriting.
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