# William Kelley

> Software Engineer | B.A. Computer Science and Mathematics

Location: New York, New York, United States
Profile: https://flows.cv/williamkelley

Strong background in mathematics with a main interest in graphics programming. Many years of working experience in people-facing and programming settings. Prepared to plan, reach out, communicate, and lead effectively in my work to deliver a well-built, enjoyable experience.

## Work Experience
### Software Engineer @ Hex
Jan 2025 – Present | New York, New York, United States
Working on semantic models and context curation for agentic data analysis

### Software Engineer @ Hashboard
Jan 2024 – Jan 2025 | New York, New York, United States
Acquired by Hex

### Software Engineer @ Prenda
Jan 2022 – Jan 2024 | Mesa, AZ
Microschools product
•  Develop high-performance, responsive web applications using Node, TypeScript, and React, supporting microschools and student-driven learning
•  Design RESTful and RPC APIs using Express, PostgreSQL, and MongoDB with CQRS and event-driven patterns
•  Led and implemented the company's design system, reducing external libraries and boosting developer productivity by 30%
•  Integrated Stripe for custom fees, achieving a 12% user adoption rate in the first year
•  Reduced CI duration for backend services by 72% to under 10 minutes with enhanced static checks
•  Produced detailed post-mortems for production outages, driving continuous team improvement
•  Revived and led an engineering book club to improve team knowledge on Domain Driven Design
•  Led bi-monthly presentations on our full-stack framework and debugging techniques to foster joint learning

### Software Engineer @ Prenda
Jan 2020 – Jan 2022 | Mesa, AZ
Code Club product (now "Fiero Learning")
•  Improved a web application using Meteor, MongoDB, and React by supporting the shift to remote learning and enabling international sales
•  Initiated a project that cut page load times by 400%, reduced memory usage across the stack, and eliminated waterfall API calls
•  Integrated SSO APIs, doubled user load capacity per server, and conducted security audits
•  Developed location-based features for at-home sign-ups with local libraries
•  Led key development efforts as the sole engineer after founding engineers departed

### Web Developer @ Prenda
Jan 2019 – Jan 2020 | Mesa, AZ

### Resident Assistant @ New York University
Jan 2018 – Jan 2020 | New York, New York, United States
•  Led 100 residents weekly with guidance, support, and resources.
•  Elected to serve on a university-mandated Working Group to improve working conditions for 325 RAs over 23 residence halls.
•  Performed as first responder to residence hall emergencies, enacting procedures and adjusting in the moment for many complex situations.
•  Managed team administration among 20 RA's, such as changes to critical duties and coordinating events.
•  Created and facilitated events that fostered personal connections and knowledge of community diversity and culture.

### Class Assistant @ Courant Institute of Mathematical Sciences
Jan 2018 – Jan 2019 | New York, NY
• Led weekly lab sections, teaching core concepts in high-level, interpreted programming languages.
• Guided 40 students through assignments, creating additional examples to reinforce fundamental concepts and teaching basic code debugging.

### Web Developer Internship @ Prenda
Jan 2018 – Jan 2018 | Mesa, Arizona, United States
• Audited curriculum, revising content, ordering, and third-party integrations to improve the learning experience
• Doubled curriculum size, extending course offerings to JavaScript, Animation and Drawing, SQL, and more
• Developed a robust user login process with field verification, automatic login on sign-up, password standards, and expanded profile interface

### Director of Business and Administration @ Residence Hall Council (NYU)
Jan 2017 – Jan 2018 | New York, NY
• Controlled multi-thousand-dollar budget for events, social outreach, and community development.
• Organized event planning and execution, communicating members' roles and responsibilities.

### Intern Lab Assistant for Prototype and Testing @ Amkor Technology, Inc.
Jan 2016 – Jan 2016 | Chandler, AZ
• Conducted testing and assessment of prototype semiconductor packaging designs and materials.
• Developed an improved apparatus for thermal interface material (TIM) testing.
• Co-authored research paper on the thermal performance of TIMs during various stress testing.

### Intern Assistant Market Analyst @ Amkor Technology, Inc.
Jan 2015 – Jan 2015 | Chandler, AZ
• Presented product technology reports based on current field research and personal interviews.
• Analyzed current trends for circuit board space management in smartphones.


## Education
### Bachelor of Arts - BA in Mathematics and Computer Science
New York University

### International Baccalaureate Diploma
Desert Mountain High School


## Contact & Social
- LinkedIn: https://linkedin.com/in/williamkelley9

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Source: https://flows.cv/williamkelley
JSON Resume: https://flows.cv/williamkelley/resume.json
Last updated: 2026-04-13