R.J. O'Brien

rjobrien.com

financial services

rjobrien.com

Chicago, Illinois, United States

501-1000 employees

165000000 revenue

LinkedIn Profile

About R.J. O'Brien

client-focused service, client success, services, trading strategies, international expansion, futures brokerage, technology innovation, brokerage services, advanced trading platforms, exchange memberships, mobile trading app, financial futures, industry leadership, industry development, asset management, long-standing industry presence, global markets, family-owned trading firm, mobile trading platform, industry pioneer in futures

R.J. O'Brien's Tech Stack

AI/ML

Decision Makers at R.J. O'Brien

3 contacts

Lawrence Hansen

Vice President of Technology, Asia

l***@rjobrien.com Sign up to view

Jared Gilman

Interim Chief Technology Officer

j***@rjobrien.com Sign up to view

Jason Benin

Director, Global Systems Engineering

j***@rjobrien.com Sign up to view

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34 technologies detected · 3 decision makers · Emails available

Sales Outreach Angle

HubSpot users typically run inbound-led sales motions. Products that integrate with HubSpot (email automation, CRM enrichment, ABM platforms) are natural fits.

R.J. O'Brien's Position in the StackWho Database

• R.J. O'Brien is 1 of 21,667 financial services companies tracked in StackWho.
• 21,586 financial services companies in our database have verified decision-maker emails (100% of the cohort).
• 11,640 companies in Illinois are in the StackWho database.
• 660 financial services companies are in the 501-1000 employee range (same size as R.J. O'Brien).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does R.J. O'Brien use?

R.J. O'Brien uses Amazon CloudFront, Route 53, Outlook, Amazon AWS, SignalR, Google Tag Manager, and 28 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at R.J. O'Brien?

StackWho has verified email addresses for 3 decision makers at R.J. O'Brien. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach R.J. O'Brien directly for sales, recruiting, or partnerships.

What industry is R.J. O'Brien in?

R.J. O'Brien operates in the financial services industry, headquartered in Chicago, Illinois, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export R.J. O'Brien's contact data?

Yes. StackWho Pro members can export decision maker contact data for R.J. O'Brien and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.