Jim O'Leary
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Jim O'Leary Email & Phone Number

engineering @ signal at Signal Messenger
Location: San Francisco, California, United States 6 work roles 2 schools
1 work email found @jimio.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

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Work email n****@jimio.com
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Current company
Role
engineering @ signal
Location
San Francisco, California, United States

Who is Jim O'Leary? Overview

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Quick answer

Jim O'Leary is listed as engineering @ signal at Signal Messenger, based in San Francisco, California, United States. AeroLeads shows a work email signal at jimio.com and a matched LinkedIn profile for Jim O'Leary.

Jim O'Leary previously worked as VP of Engineering at Signal Messenger and Several Security Management Positions at Facebook. Jim O'Leary holds Ms, Computer Science from University Of Washington.

Company email context

Email format at Signal Messenger

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*@jimio.com
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AeroLeads found 1 current-domain work email signal for Jim O'Leary. Compare company email patterns before reaching out.

Profile bio

About Jim O'Leary

Jim O'Leary is a engineering @ signal at Signal Messenger. He possess expertise in security, distributed systems, cloud computing, software engineering, software development and 8 more skills.

Listed skills include Security, Distributed Systems, Cloud Computing, Software Engineering, and 9 others.

Current workplace

Jim O'Leary's current company

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Signal Messenger
Signal Messenger
engineering @ signal
AeroLeads page
6 roles

Jim O'Leary work experience

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

Vp Of Engineering

Current

San Francisco, California, Us

Doing all of the things that one does when running and evolving an engineering organization. We’re a fully-remote, 501c3 nonprofit organization, building free open-source tools for private communication.Check us out @ https://signal.org, and come join us @ https://signal.org/workworkwork.

Oct 2019 - Present

Several Security Management Positions

Led/Managed/Supported Security Engineering and Software Engineering teams as small as 4, to managing managers in a multi-office international organization of ~30. Ran the bug bounty, performed security reviews, wrote product/tooling code, provided security training, and managed multi-million-dollar annual budgets. After 2.5y, moved to leading a broader Security Partnerships team that handled corpdev/M&A, AR/VR security, compliance, and secure design. Also did tons of hiring work, and coordinated a company-wide engineering v-team dedicated to privacy incident response and review (aka the "Privacy IMOCs"). All around, identified and solved security, privacy, and organizational challenges _at scale_.

Apr 2015 - Oct 2019

Engineering Manager & Application Security Engineer

San Francisco, Ca, Us

As manager: Launched 2FA for Twitter accounts, the bug-bounty program, a rewrite of production login systems, and account anomaly detection, all while performing company-wide security reviews. Rewrote and taught our writing secure code class. Responsible for static and dynamic code analysis. Defined and executed on team and company-level roadmaps. Lots of hiring. Frequent presenter in engineering-wide and company-wide meetings (“tea time”).As engineer: Found and fixed security problems across nearly all our codebases. Developed a credential-abstraction solution that is surprisingly still in use today. Worked on XSS, CSRF, CSP, TLS, OAuth, mobile, web, backend, ops, you name it.

Mar 2011 - Apr 2015

Software Security Engineer

Redmond, Washington, Us

Health Solutions Group: First security engineer in a pre-beta group birthed in Microsoft Research. Secure design, development, and testing for HealthVault (Personal Health Record), enterprise products (Amalga), and medical device software. Gold Star Award recipient. Responsibly disclosed security issues discovered after employment in 2011 and 2015.Unified Communications Group: Security testing, tool development, and training to support Live Meeting (now Lync), Communicator, and other Native-Client/Server style products over VoIP, SIP & HTTPS.

Aug 2004 - Mar 2011

Intern: Security Engineering & Incident Response

New York, Ny, Us

May 2003 - Aug 2003

Intern

Sudbury, Ma, Us

Authored security material for six Computer Science textbooks over two summers.

May 2001 - Aug 2002
2 education records

Jim O'Leary education

Ms, Computer Science

University Of Washington

Bs, Computer Science & Psychology

Rensselaer Polytechnic Institute
FAQ

Frequently asked questions about Jim O'Leary

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

What company does Jim O'Leary work for?

Jim O'Leary works for Signal Messenger.

What is Jim O'Leary's role at Signal Messenger?

Jim O'Leary is listed as engineering @ signal at Signal Messenger.

What is Jim O'Leary's email address?

AeroLeads has found 1 work email signal at @jimio.com for Jim O'Leary at Signal Messenger.

Where is Jim O'Leary based?

Jim O'Leary is based in San Francisco, California, United States while working with Signal Messenger.

What companies has Jim O'Leary worked for?

Jim O'Leary has worked for Signal Messenger, Facebook, Twitter, Microsoft, and America Online.

How can I contact Jim O'Leary?

You can use AeroLeads to view verified contact signals for Jim O'Leary at Signal Messenger, including work email, phone, and LinkedIn data when available.

What schools did Jim O'Leary attend?

Jim O'Leary holds Ms, Computer Science from University Of Washington.

What skills is Jim O'Leary known for?

Jim O'Leary is listed with skills including Security, Distributed Systems, Cloud Computing, Software Engineering, Software Development, Agile Methodologies, Scalability, and C#.

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