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Conlan O'Leary

Co-founder, CEO

Conlan O'Leary is Co-Founder and CEO of Sighten. Prior to Sighten, Conlan helped manage the structuring and pricing desk at Clean Power Finance, a leading residential solar financing platform. Conlan has a deep knowledge of the US solar marketplace with 6+ years working exclusively in residential solar financing and quoting software. Conlan has prior experience in technology and cleantech investment banking as well as environmental commodities trading. He is a graduate of Dartmouth College in New Hampshire and holds degrees in economics and philosophy.

Graham Hommel

Co-founder, VP Engineering Operations

Graham partnered with Conlan to create Sighten after the two worked together for a number of years at Clean Power Finance. Graham developed a number of Sighten's core, back-end libraries and is responsible for developer operations and financial coding. At CPF, Graham developed and maintained the asset pricing models for funds deploying capital across the CPF platform. Prior to his work at CPF, Graham spent five years in investment banking and private equity at Goldman Sachs and KKR. Graham attended the University of Notre Dame where he received degrees in finance and German.

David Villagra

Co-founder, CTO

David leads software architecture and implementation at Sighten. He joined Conlan and Graham at the outset to help build the Sighten platform from the ground-up. He now spends most of his time leading the growing engineering team. Prior to Sighten, David spent his career developing SaaS products for the biotechnology industry, including a web application for DNA sequencing and a platform used to help clinicians personalize treatment decisions. David was on the pre-medicine track at Dartmouth College, but picked up software engineering in earnest after graduating and never looked back.

Mariya Nomanbhoy


Mariya oversees product management and design at Sighten. She has significant experience with solar quoting and finance tools, joining Sighten after running product for four years at Clean Power Finance. Mariya also has extensive experience building financial technology systems from her three years working at Goldman Sachs, where she focused on risk analytics systems for alternative investment teams. She has a degree in computer science from Columbia and an MBA from Haas. Mariya started her career as a developer at age 12 when she wrote her first Arkanoid application and she's loved working on technology ever since.

Working at Sighten is challenging, fun, and rewarding! We take pride in building incredible software that will underpin the distributed energy revolution and make clean, affordable electricity more accessible. We're also nerds that love being at the forefront of our craft--we're continually test-driving the latest programming technologies to ensure that we're on the bleeding edge of web and software development. If you want to work somewhere where you can have a big impact and collaborate with creative and driven people then Sighten is the place for you. 

World Positive
World Positive
Health & Wellness Coverage
Health & Wellness Coverage
Tahoe Retreats
Tahoe Retreats


  • Competitive compensation package
  • Dog friendly office
  • Full medical, dental and vision coverage
  • Flexible vacation and sick days
  • Choose your own hardware/software setup
  • Frequent company events (sports, outdoors, happy hours)
  • Gym membership
  • Transportation allowance
  • Office stocked with snacks and drinks
  • Fun, open environment with a growing team!


San Francisco

353 Sacramento St, Suite 1820

San Francisco, CA, 94111