Christopher Hahn Email & Phone Number

Bangalore, Karnataka, In

• Designed and developed social media features to Infosys platform promoting community growth where users share experiences, interests, accolades, and recruit members utilizing JavaScript, React, Bootstrap, SQL, and ASP.NET, increased user engagement by ~90% and retention by ~75%.• Led 5 engineers that developed web applications provided clients a portal to manage their medical-related services utilizing C#, React, Bootstrap, Restful API, Dapper, ASP.NET, SQL, and Bootstrap, saving the company ~$120,000 annually.• Maintained solutions that modified databases utilizing C#, Restful API, Dapper, and SQL reducing workload by ~45% and saving ~$75K annually.• Deployed a task board web tool that updates and informs various teams, utilizing C#, React, ASP.NET, SQL, and Bootstrap, increasing productivity by ~85%, and saving ~$100K annually.• Automated file processing system that transfers files between various databases utilizing C#, ASP.NET, and SQL, reducing workload by ~90% and saving the company ~$1.5M annually.

Santa Cruz, Ca, Us

• Led team that developed social network web applications to facilitate communication between students, alum, and faculty of UCSC utilizing JavaScript, Python, Node.js, SQL, and Drupal, peaking at ~90k users.• Led team that developed a web application that generates optimal class schedules utilizing JavaScript, Node.js, SQL, and Drupal, decreasing both dropout and repeat rates by ~ 85%, and peaking at ~8k users.• Developed mobile application that assists students in locating information, directions around campus, and other resources utilizing JavaScript, Python, SQL, XML, and Android Studio, assisting ~17k students annually.• Developed several websites for various organizations at the University of California Santa Cruz, utilizing JavaScript, Python, Node.js, SQL, and Drupal, increasing web traffic by ~90%, increasing news users by ~30%, and peaking at ~35k users.• Developed survey-based web application improved onboarding incoming students utilizing JavaScript, Python, Node.js, SQL, and Drupal, decreasing outreach to faculty and staff by ~35% and peaking at ~11k users.• Developed survey-based web application provided student’s search information, schedule and meet with advisors, utilizing JavaScript, Python, Node.js, SQL, and Drupal, assisting ~13k students annually.

• Led 10 engineers to develop marketplace for client companies to advertise, sell, and distribute digital and real-world goods on digital marketplace accessible across various devices, utilizing AWS, MongoDB, Golang, and Facebook’s proprietary software, increasing user interactions by ~65% and client engagement by ~80%.• Implemented several improvements to application responsiveness across various devices for unnamed project, utilizing Golang, AWS, MongoDB, and Facebook’s proprietary software, increasing responsiveness by ~45%.

• Improved UI of the website and mobile responsiveness across different devices, utilizing JavaScript, Vue.js, Node.js, Firebase, AWS, and Jasmine, increasing responsiveness by ~65% and increasing interactions by ~78%. • Developed authentication system by account types and security, utilizing JavaScript, Python, Vue.js, Node.js, Firebase, AWS, and Bootstrap, decreasing security breaches by ~75% and peaking at ~30k users.

Santa Cruz, Ca, Us

• Taught Introductory to Java programming laboratory section, for 30+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments. • Taught Introductory to C programming laboratory section, for 30+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments. • Taught Abstract Data Type laboratory section, for 30+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments. Technologies used are Java and C.• Taught Computer Systems and Assembly Language laboratory section, for 30+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments. Technologies used are MIPS.

Chennai, Tamil Nadu, In

• Designed, developed, and deployed a price comparison tool and calculator utilizing an algorithm, of my design, that uses benchmarks of competitor CRM suite prices and demographics, to provide the sales team with real-time information utilizing JavaScript, Node.js, SQL, Vue.js, Bootstrap and Zoho’s proprietary software increased sales by ~40%.• Discovered several bugs within Zoho's internal database tools and worked alongside the engineering team to develop solutions utilizing SQL and Zoho’s proprietary software increased database tool responsiveness by ~45%.• Designed, developed, and launched a Zoho marketplace CRM extension which integrated Walk Score web API, allowing users to find real-time information about the specific target locations utilizing JavaScript, Node.js, SQL, Walk Score API, Vue.js, Bootstrap, and Zoho’s proprietary software held the top 10 for half of 2018 physical year, peaked at ~300,000 downloads and received user’s satisfaction rating ~95%.

San Francisco, Ca, Us

• Implemented several improvements to mobile and web application responsiveness and user interactions, leveraging JavaScript, AWS, and Twitter’s proprietary software, increasing responsiveness by ~85% mobile and ~90% web.• Developed Twitter-based product that promoted engagement between teachers, students, and university to communicate in real-time safe-space monitored by university faculty with JavaScript, AWS, and Twitter’s proprietary software, peaking at ~225k active users and retained 95% of the users after 8 months.

Torrance, Ca, Us

• Taught Introductory to Java programming laboratory section, for 40+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments. • Taught Introductory to C++ programming laboratory section, for 40+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments. • Taught Advanced C++ programming laboratory section, for 40+ students, where my duties were to teach fundamental concepts that were discussed in class, as well as, assign and assist students with their weekly laboratory assignments.

Santa Monica, California, Us

• Implemented several improvements to mobile application responsiveness and user interactions, optimizing buttons, assets, and user fields and reduced load times utilizing Java, C++, SQL, and Microsoft Visual Studio, increasing responsiveness by ~80% and generating sales for the company ~$25M annually.

Doctor Of Philosophy - Phd, Computer Science

Bachelor Of Science - Bs, Computer Science

Associate Of Science - As, Computer Science