We build delightful software products
At Kionin we do product design, development, and growth for our partners and our portfolio. We combine the latest advancements and our experience from companies of all sizes to deliver better products faster.





Our team's work can be found at some fantastic places





About Kionin
We got our start building tools for tech companies in the telecom space. This eventually became a portfolio of products we run, and then grew to include work for partners as well, all from the hills of San Francisco.
We have worked in multiple industries, including fintech, data brokerage, marketing, education, and others. We believe modern engineering is a competitive advantage and we constantly invest in adopting the latest advancements. This lets us quickly build high-quality, practical products and solutions to nearly any problem.
- Lifetime users served
- 172 million
- Services actively managed
- 22
Some of our work
We have built a variety of products, from developer tooling to consumer-facing applications. Here is a quick selection of some of our work.

HazelBase
Platform to access our dataset of billions of data points on businesses and contact information.

Telephony Research
Modern API service for telecom data. Originally an acquisition that we then combined with our data.

Attendly
Attendly helps school districts efficiently manage after school programs, from compliance to registration, all in one, secure, easy-to-use platform. Built for a client startup.
Our services
Tell us what you need and your questions in plain English, and we can handle everything else.
We are more than a technical team; we are your partners. We have turned everything from vague napkin drawings to detailed RFPs into successful products.
If you are based in San Francisco we can meet in person, otherwise we can meet virtually.
We generally focus on anything someone can use through their computer or phone and connects to the internet. This has a surprising amount of overlap with most technology, so don't hesitate to reach out regardless of what you need; chances are we've already done something similar.
Get in touch at hello@kionin.com


