Tim Disney
Director Of Engineering at F5
Greater Seattle Area United States
Summary
🤩
Rockstar🎓
Top SchoolTim Disney is a seasoned software leader with 18 years of experience who currently serves as Director of Engineering at F5, combining deep theoretical expertise in programming languages with pragmatic delivery of production systems. He built his career bridging research and industry—from a PhD researcher and multiple Mozilla internships to principal engineering at Shape Security and senior management at F5—bringing rigorous problem-solving to large-scale, security-sensitive systems. Tim is a hands-on engineering manager who still contributes to low-level systems work, evidenced by memory-management improvements in the LLJS project and type-safety contributions to Facebook's widely used Flow type checker. Based in the Greater Seattle Area, he excels at translating language and runtime theory into efficient, reliable infrastructure and mentoring teams to ship elegant, performant software.
18 years of coding experience
15 years of employment as a software developer
BS Computer Science, BS Computer Science at Seattle Pacific UniversityUniversity of California Santa Cruz
Stackoverflow
5,297reputation
489kreached
32answers
18questions
Github Skills (16)
memory-management10
low-level-programming10
javascript10
type-definition10
lib9
dom-manipulation9
data-structure7
data-structures7
java6
macros6
nodejs6
ramdajs6
coffeescript6
lazy-evaluation6
jsp6
Programming languages (10)
Github contributions (5)
mbebenita/LLJS
Jun 2012 - Jul 2012
LLJS: Low-Level JavaScript
Role in this project:
Back-end Developer
Back-end DeveloperContributions:43 commits in 27 days
Contributions summary:Tim contributed primarily to the memory management and low-level aspects of the LLJS project. They implemented a memory checker, addressing memory access and initialization issues by shadowing memory and integrating a memcheck library. The user also made several performance improvements in memory allocation and deallocation, fixing bugs and enhancing the efficiency of memory operations within the LLJS environment.
javascript
facebook/flow
Nov 2016 - Jan 2019
Adds static typing to JavaScript to improve developer productivity and code quality.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:5 commits, 6 PRs, 1 comment in 2 years 2 months
Contributions summary:Tim primarily contributed to defining and refining the type definitions and core functionalities of the `flow` library. They addressed specific issues related to DOM manipulation and the definition of vendor-specific properties. Furthermore, they also fixed a typo and added types related to javascript object properties, highlighting a focus on library improvements and type-safety. The user’s contributions indicate involvement across different modules and functions within the library.
javascriptstatic-typing
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