John Cui
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John Cui Email & Phone Number

Director of Engineering at Tough Leaf
Location: New York City Metropolitan Area, United States 20 work roles 1 school
2 work emails found @blackthorn.io LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails

Work email j****@blackthorn.io
LinkedIn Profile matched
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Current company
Role
Director of Engineering
Location
New York City Metropolitan Area, United States
Company size

Who is John Cui? Overview

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Quick answer

John Cui is listed as Director of Engineering at Tough Leaf, a with 25 employees, based in New York City Metropolitan Area, United States. AeroLeads shows a work email signal at blackthorn.io and a matched LinkedIn profile for John Cui.

John Cui previously worked as Engineering Manager at Tough Leaf and Health and well-being at Career Break. John Cui holds Bachelor Of Science (B.S.), Computer Science from Rutgers University - Newark.

Company email context

Email format at Tough Leaf

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{first}@blackthorn.io
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AeroLeads found 2 current-domain work email signals for John Cui. Compare company email patterns before reaching out.

Profile bio

About John Cui

Self-taught, academia enhanced, and professionally milled, software artisan with a passion for crafting ideas into purposeful and usable products. • Highly motivated to work with a team of professionals and experts. • Well-versed in several programming languages with solid skills in object-oriented development. • Proficient and certified in Agile project development practices. • Methodical thinker suitable for problem solving, analysis, and testing operations. • Passionate about learning and eager to take in more knowledge. • Very Handy.

Listed skills include Javascript, Solution Architecture, Project Management, Business Analysis, and 46 others.

Current workplace

John Cui's current company

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Tough Leaf
Tough Leaf
Director of Engineering
New York, NY, US
Website
Employees
25
AeroLeads page
20 roles · 29 years

John Cui work experience

A career timeline built from the work history available for this profile.

Director Of Engineering

New York, Ny, Us

Engineering Manager

New York , Ny, Us

Health And Well-Being

Career Break

Spending time with family. Reflecting on what I want to do with my career and my life. Coping with losing a loved one.

Jun 2021 - Oct 2022

Chief Technical Architect

New York, Ny, Us

• Be a subject matter expert for the applications I helped develop• Mentor and transfer knowledge to engineering team• Provide continued technical guidance for the company

Feb 2021 - May 2021

Chief Technology Officer

New York, Ny, Us

• Responsible for ensuring the success of the engineering team• Becoming a lead engineer when circumstances necessitate it• Provide technical guidance and direction for the company• Invent solutions to customer issues and product features• Identify and implement process improvements• Help grow the company through its startup phase

May 2019 - Feb 2021

Platform Architect And Lead Engineer

New York, Ny, Us

• Designed and developed a schema driven system for rapid REST API deployment with support for multi and cross database relationships including integrations to Salesforce and served as our in-house Backend-as-a-Service (BaaS) platform• Developed AngluarX web applications which integrated with our in house BaaS• Developed and implemented a payment capture micro-site (Blackthorn PayLink)• Developed and implemented an invoicing micro-site (Blackthorn DocumentLink)• Developed and implemented an pluggable donation micro-site (Blackthorn Donations)• Designed and architected solutions for single-deployment, multi-tenant, multi-backend applications• Researched and designed solutions for an extensible turnkey customer portals• Lead the development and feature implementation of an event registration micro-site (Blackthorn Events)

May 2016 - May 2019

Product Owner & Web Applications Developer

Crome.Io

• Designing unique UX (user experience) for managing complex real-time data.• Developing Custom UI (user interface) to enable rich desktop functionality through the web and mobile devices.• Implementing hardware interactions via USB, bluetooth, and serial communication ports.

Jan 2014 - May 2016

Full Stack Web Developer

Shredz Supplements Llc

Developed custom web applications that integrate with Salesforce.com REST APIs.Enhanced existing website features and functionalities.Implemented and managed Amazon EC2 appliances.Configured, implemented, and deployed SSL versions of existing company sites.Produced application UAT reports using Google Analytics.Developed and proposed systemic enhancement and optimization strategies.

Mar 2015 - Apr 2016

System Administrator

• Set up and managed physical and virtual servers running Windows Server 2008, Oracle Linux 6, CentOS 6.5, and Amazon Linux • Migrated and replicated local server environments as Amazon EC2 appliances • Processed and Installed SLL certificates on Windows and Linux web servers • Installed and configured custom LEMP (Linux, NGINX, MySQL, PHP) with additional Redis and Oracle DB support

Oct 2013 - Mar 2015

Oracle Product Specialist

• Installed and configured Oracle Database 11gR2 on Windows and Linux platforms. • Implemented and configured several instances of Oracle Argus Safety 7.0.2 in single and multi-tenant variations • Configured Argus Workflows, Business Configurations, LDAP Connections, and other Argus Console operations • Performed data backups and reconfigurations of the Argus Safety database • Wrote and implemented custom Linux/Unix, Windows/DOS, and SQL scripts and utilities for accelerating tasks involved in installing, configuring, and maintaining Oracle databases • Established an extensive low level knowledge of Oracle Argus database structure • Received and Oracle Certification as a Oracle Argus Safety Implementation Specialist

Oct 2013 - Mar 2015

Senior Software Developer - Full Stack

• Generated and documented system design specifications. • Comprehensive analysis of existing Oracle Argus database structures, relationships, and operations to ensure thorough compatibility for product development • Employed, configured, and developed on Laravel PHP backend dynamically interfaced with several Oracle multi-tenant databases • Produced a modern and responsive Single Page Application using AngularJS framework that was also IE8 compatible • Developed and performed unit tests on backend and front end applications • Practiced Agile (SCRUM) and Extreme Programming (XP) methodologies • Mentored and oversaw offshore junior developers • Organized and maintained Git repositories

Oct 2013 - Mar 2015

Chief Technologist And Product Architect

• Investigated technical solutions for putting CEO’s ideas into fruition • Performed experiments on the viability of certain technology platforms and solutions • Established a blueprint for implementing the product idea • Developed the framework for integrating technology platforms into a single cohesive stack

Oct 2013 - Mar 2015

Product Owner & Developer

Crome

• Created a multiple environment project that encompasses Windows desktop development using Borland Delphi, application plug-in development through HTML and Javascripting, and low level firmware development for the OKI66207 microprocessor • Designed and built custom visual and non-visual components to enhance software usability • Employed statistical mathematics in the processing and utilization of vehicle telemetry data • Developed a process for improving automotive performance tuning through empirical data transformations

2002 - 2014 ~12 yrs

Technical Operations Manager

Wired Electronics Inc.

• Directed and oversaw personnel operations • Developed workflows, requirements, and tasks for handling recurrent operations • Assessed overall quality of works performed by personnel

2010 - Nov 2013

Performance Tuning Specialist

Wired Electronics Inc.

• Tested and refined performance outputs on automotive engines • Performed electrical and mechanical repairs • Designed, developed, and fabricated bespoke performance solutions for clients

2007 - Nov 2013

Web And Graphic Designer

Wired Electronics Inc.

• Designed a produced company logos for web and print publication • Designed, cut, and applied vehicle graphics • Developed and maintained company e-commerce website

2001 - Nov 2013

Technician

Wired Electronics Inc.

• Performed repairs, alterations, and modifications to client vehicles • Entertained and responded to client inquiries or concerns • Prepared work areas and vehicles prior to start of operation • Delivered completed vehicles to their owners • Maintained cleanliness of work areas and other facilities

2001 - 2006 ~5 yrs

Open Source Developer And Contributor

Pgmfi.Org

• Assisted in deconstructing and understanding the software operations of a Honda OBD1 Engine Control Module using the OKI 66207 processor.• Analyzed and documented decompiled assembly code for OKI 66207 processor.• Developed software enhancements and solutions to be implemented on ECM.• Created a utility software which allows for easy visual editing of OKI assembly code.

2002 - 2005 ~3 yrs

Website Designer And Flash Developer

Freelance Work

• Designed and deployed impressionable websites using Flash enabled content.• Implemented custom visual effects using Flash Actionscript.• Created custom textures, backgrounds, and images using Adobe Photoshop.• Produced complex web layouts using Macromedia Dreamweaver.

2000 - 2003 ~3 yrs

Yahca Html Compressor - Product Owner & Developer

Independent Work

• Optimized javascript algorithms for compressing and decompressing HTML files • Implemented compression algorithms superior to commercial competitor software (XCition)

1998 - 2000 ~2 yrs
1 education record

John Cui education

  • Rutgers University - Newark
    Rutgers University - Newark
    Computer Science
FAQ

Frequently asked questions about John Cui

Quick answers generated from the profile data available on this page.

What company does John Cui work for?

John Cui works for Tough Leaf.

What is John Cui's role at Tough Leaf?

John Cui is listed as Director of Engineering at Tough Leaf.

What is John Cui's email address?

AeroLeads has found 2 work email signals at @blackthorn.io for John Cui at Tough Leaf.

Where is John Cui based?

John Cui is based in New York City Metropolitan Area, United States while working with Tough Leaf.

What companies has John Cui worked for?

John Cui has worked for Tough Leaf, Career Break, Blackthorn.Io, Crome.Io, and Shredz Supplements Llc.

How can I contact John Cui?

You can use AeroLeads to view verified contact signals for John Cui at Tough Leaf, including work email, phone, and LinkedIn data when available.

What schools did John Cui attend?

John Cui holds Bachelor Of Science (B.S.), Computer Science from Rutgers University - Newark.

What skills is John Cui known for?

John Cui is listed with skills including Javascript, Solution Architecture, Project Management, Business Analysis, Data Analysis, Agile Project Management, Test Driven Development, and Unit Testing.

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