Jonathan Chum Email & Phone Number

San Francisco, California, Us

San Francisco, California, Us

San Francisco, California, Us

San Francisco, Ca, Us

Currently, hands-on engineering consulting for several Fortune 500 clients (Macys, Khols, etc.):- Managed the administration of over 200 VMs on AWS, specializing in Zcoin/FIRO cryptocurrency staking and mining on CentOS platforms.- Developed a WatchOS and iOS application for tracking cheap flights, utilizing Facebook's Prophet for forecasting and scaling a Kubernetes farm that analyzes over 300,000 routes weekly.- Created an App Store optimization tool for Apple’s Store, integrating ranking data visualization with VueJS to enhance app visibility and user engagement.- Collaborated with various vendors to seamlessly integrate new technologies into existing systems, ensuring compatibility and performance enhancement.- Spearheaded the implementation of new processes to cultivate a performance-focused front-end culture, significantly enhancing client-side efficiencies.- Actively enhancing user experience by building a performance-oriented culture, advocating for best practices in page performance optimization using React/Redux.- Played a key role in designing and orchestrating a GraphQL middle layer, improving data management and API efficiency.- Led a significant migration project for an e-commerce platform from a BackboneJS/Marionette stack to Vue/Vuex, streamlining the development process and improving site performance.

Neuilly Sur Seine, Ile De France, Fr

- Led cross-functional collaboration with leaders in Product, Paid Media, CRM, Email Marketing, Search, and Mobile Apps (iOS & Android), focusing on Analytics and Site Testing.- Directed vendor evaluations, integrations, and strategic post-project planning, enhancing operational efficiency and innovation.- Coordinated with Akamai and Adobe TAMs weekly to drive new solutions across teams, improving system capabilities and user experiences.- Managed detailed analytics and SQL data investigations to resolve reporting and data collection issues, boosting data integrity across business units.- Developed measurement and reporting strategies for client-side tests in partnership with analysts, ensuring data-driven decision-making.- Ensured compliance with accessibility standards and CCPA regulations through close collaboration with legal teams, safeguarding user and company data.- Prioritized and triaged production issues with engineering leaders, enhancing system reliability and performance.- Worked with the performance team on site optimization, including load testing and bandwidth management, leading to significant cost savings and performance gains.- Collaborated with vendor and enterprise architects to implement client-side caching and performance solutions, optimizing site responsiveness.- Led global teams in delivering comprehensive solutions through Oracle’s CE and Coherence stack, streamlining system integrations.- Focused on security enhancements, conducting audits, and developing strategies for bot mitigation, form jacking prevention, and fraud detection to ensure robust security protocols.

Built Coin Beat, a native iOS and Android app for managing bitcoin and over 1200+ crypto currencies. Tracks news, alerts, ICOs, and Airdrops.

AwardMe - Your passport to traveling the world for little to no cost.http://www.awardmeapp.com

- Delivered technical consultation and implementation services for a diverse array of projects across multiple platforms:- Developed a mobile loyalty, payment, and analytics application tailored for iOS, Web, and BlackBerry, enhancing customer engagement and business intelligence.- Created a wedding industry look book that included automated scraping, advertising solutions, and e-commerce functionalities, streamlining content aggregation and sales processes.- Engineered a fantasy sports betting application using PhoneGap, accessible on iOS and Android, designed with (X)HTML and CSS3 to offer a seamless user experience.- Developed a Mac OSX-based frequent flier airline award search tool using Swift and Cocoa, optimizing travel planning and loyalty program management.

San Francisco, California, Us

Systems/feature developer on Mafia Wars, CastleVille, and PetVille. Sr Software engineer on Zynga.com (platform) and Zynga Social Center (touchpoint of 328M+). My role in Mafia Wars is responsible for the uptick on DAU by implementing viral game mechanics and seasonality features. Spent 3 months working with Castleville team in Dallas, TX prior to IPO to launch new IP.Worked on Zynga.com/zDirect's frontend feed UX and implementation.While working on Zynga Social Center (ZSC), goal was to create/analyze features that assisted funneling DAUs to new IP and/or new features (game expansions) with least amount of impact on existing IP across 328M+ MAUs. Hypergrowth to grab market share through driving down cost per acquisition for LTV.- exited IPO

* Jetsetweekends.com built on Ruby on Rails (RoR) and Jquery library* Appointment Cafe patient/doctor CRM portal developed for the healthcare industry. Schedules appointment, request exams/x-rays/referrals, filling drug prescriptions, automated with text based SMS reminders* PrimoMailer uses FreeBSD, LightHTTPd, Postfix, PHP, and MySQL as the primary platform. Additional software includes SpamAssassin and Nagios.* PrimoCart - Global co-branded turnkey storefront solution. Currently implemented using FreeBSD, PHP5, MySQL5, and LightHTTPd* PrimoFeed - Product inventory feed based system. Provides B2B solutions for vendors and publishers such as bloggers and/or web site owners.

Sunnyvale, Ca, Us

Engineer for Y! Mobile oneSearch & Search Monkey

Sunnyvale, Ca, Us

* Del.icio.us 2.0 Frontend developer- onboarding experience- tag intersection / union feed* Y! Bookmarks 2.0Lead developer on a team of two frontend engineers and 4 backend engrs. Worked closely with project and product managers in 16+ locales worldwide (IT, MX, JP, AU, CA, AR, BR, FR, US, DE, UK, etc.) to hit milestones for over 1B+ bookmarks and 200MM+ users* Global Search Platform (GSP) TeamWorked on Y! Answers i18n/l10n efforts, globalizing the application from US to rest of the world.

Atlanta, Ga, Us

Developed and produced PHP based web applications for emerging international markets (GR, FR, IT, DE). Various e-commerce related tools, platform engineering, systems administration, sales personnel training, internal sales tools developmentNotable accomplishments:* FreeBSD based web hosting/email 3 tier provisioning interface (CAMS - Central Account Management System)* Excerpo.com v1 and v2 storefront solution* Managed Matthew Lesko's half million email campaign* Lead Management/Auto Responder system used by sales team to keep in constant contact with leads from various portals/sources.

* Developed backend extranet infrastructure for managing criminal background checks using SOAP and WSDL services with existing vendors* Developed and produced new web site (xukor.us)* Worked with local, state, and nationwide law enforcement personnels to conduct several types of screenings across many different watch lists (i.e., federal, state, and terrorist)

Provide consultation work for existing infrastructure and optimizing code.* Zurna.com* MyCool.com* Closo.com