Company Details
Technology Stack
Professional Summary
Ian Tsao is Director, Delivery Engineering at OneEnergy. OneEnergy operates in the renewables & environment industry and has 140 employees. Based in Seattle, Washington, United States. Classified as a director-level Director of Engineering leader. Their organization's technology stack includes Outlook, Greenhouse.io, Rackspace, Sage Intacct, Sophos, and 11 other technologies. OneEnergy reports annual revenue of 10000000. OneEnergy has raised 11537405 in total funding.
Position in the CTO Rank Database
- • Typical Director of Engineering compensation in Washington: $180,000 – $340,000 (median $240,000). Composite from levels.fyi, Glassdoor, and Payscale data; adjusted for state cost of labor.
Data compiled from LinkedIn public profiles, company filings, and verified public technology signals. Methodology & sources · Updated June 2026.
Frequently Asked Questions
How do I contact Ian Tsao?
Ian Tsao has a verified email address on file on CTO Rank. They work at OneEnergy. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does Ian Tsao work for?
Ian Tsao is Director, Delivery Engineering at OneEnergy, a company in the renewables & environment industry with 140 employees. The company is headquartered in Seattle, Washington, United States.
What is Ian Tsao's role in technology leadership?
Ian Tsao is classified as a Director of Engineering leader at the director level.
What technologies does Ian Tsao's organization use?
Ian Tsao's organization uses a technology stack that includes Outlook, Greenhouse.io, Rackspace, Sage Intacct, Sophos, YouTube. This information is useful for sales teams, recruiters, and technology vendors.
Is Ian Tsao open to recruiting or new opportunities?
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Can I pitch or sell to Ian Tsao at OneEnergy?
Ian Tsao is Director, Delivery Engineering at OneEnergy. Director of Engineerings like Ian Tsao typically evaluate vendors in Outlook, Greenhouse.io, Rackspace, and related categories. Use CTO Rank Pro to get verified email and approach directly.
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