Steve Cosman
Founder & CEO at Kiln
Old Toronto, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolSteve Cosman is a founder and product-focused engineering leader with 14 years building consumer photo experiences and applied ML, currently founding Kiln after leading Apple Photos' software, imaging, and ML efforts. He previously co-founded Shoebox App, a highly regarded cross-platform photo cloud praised by WSJ and Forbes, and has a history of shipping inventive consumer features at Microsoft including Bing Vision and AR experiences. At Apple he led major Photos initiatives—Wallpaper, Memories revamp, and the Photos widget—combining ML curation, depth-aware imaging, and rendering engineering to create delightful, user-centric products. A University of Waterloo software engineering graduate and former Loran Scholar, he blends product intuition, hands-on technical depth, and startup grit to turn complex imaging and ML challenges into polished consumer features.
14 years of coding experience
15 years of employment as a software developer
Loran ScholarBachelor of Software Engineering, Bachelor of Software Engineering at University of Waterloo
Stackoverflow
2,441reputation
1.1mreached
42answers
27questions
heroku
top-5%
Github Skills (200)
interpreter10
expr10
postgrest10
saas-application10
firebase-database10
saas-kit10
saas10
azure-openai10
database-cleaner10
svelte10
backend-as-a-service10
llm10
programming-language10
python10
windows10
Programming languages (13)
Github contributions (5)
scosman/zipstreamer
Nov 2017 - Jan 2023
Zip File Streaming Microservice - stream zip files on the fly
Contributions:14 releases, 78 commits, 46 PRs in 5 years 2 months
golangstreaming-serverserverlessstreamingon-the-fly
Kiln-AI/Kiln
Jul 2024 - Mar 2025
The easiest tool for fine-tuning LLM models, synthetic data generation, and collaborating on datasets.
Contributions:23 releases, 17 reviews, 291 PRs in 8 months
aichain-of-thoughtcollaborationdataset-generationevals
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