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StepChange specializes in migrating and modernizing apps and databases for performance and scalability.
What We Do
Data Engineering
Stefan is an expert in scaling data and machine learning, with experience at Stanford, LinkedIn, and Stitch Fix.
Case Studies
Cutting-edge performance, reliability, and data engineering.
Featured Case Studies
Migrating Coinbase's 56 Million Users to React Native: Key Lessons and Takeaways
Harry Tormey · Jul 15, 2024
Are you thinking about migrating a Native mobile app to React Native or building one from scratch? Are you interested in hearing lessons learned from migrating Coinbase's 56 million users from Native to React Native? Nick Cherry, an Expert React Native developer and former Software Engineer at Coinbase, discusses his experience with React Native performance at Coinbase and his role in porting their Native mobile apps to React Native. He is interviewed by Harry Tormey, CTO of StepChange, who al
Scaling Clubhouse From 10K to 10 Million Users In 6 Months With Postgres
Harry Tormey · May 16, 2024
Do you have a Django app built on Postgres? Want to know how to scale it to 10 million users using AWS Aurora? Luke Demi, is an expert software engineer who helped scale Clubhouse’s backend infrastructure from 10 thousand users to 10 million users in 6 months. In this video, he shares his experience migrating Clubhouse from Heroku to AWS and Aurora Postgres. Prior to working at Clubhouse Luke was a staff software engineer at Doordash and Coinbase, where he also worked on very hard scaling proble
Postgres and GIS at Nextdoor: Engineering for Scale
Harry Tormey · May 22, 2024
Do you have a Django app built on Postgres that needs to use geospatial data? Want to know how to scale it to millions of users using Postgres? In this article, I interview Ananth Chandrasekharan about the challenges Nextdoor faced while scaling its Django application, which made heavy use of geospatial data, and how they successfully overcame these challenges. Ananth is seasoned engineering leader with decades of experience working at top tech companies such as Coinbase, Nextdoor and Rippling.
Featured Insights
Scaling Rails & Postgres to Millions of Users at Microsoft: Lessons & Takeaways
Harry Tormey · Aug 28, 2024
Do you have a Rails app built on PostgreSQL and need to scale it to millions of users? In this interview, I speak with Andrew Atkinson, one of StepChange's expert consultants, who brings deep expertise in optimizing Rails applications for performance and scalability. Andrew’s expertise is backed by real-world experience—during his tenure at Microsoft, he played a key role in scaling the infrastructure for Flip (formerly Flipgrid), a video discussion and sharing app built for classrooms and beyo
Advanced PostgreSQL performance tuning and monitoring
Niall OHiggins · Jul 23, 2024
Having discussed why Postgres performance tuning matters, and how to write better queries to optimize performance, it’s time to look beyond the basics towards more advanced techniques in Postgres performance tuning and monitoring. I’ll share how you can use tools like pg_stat_statements for query analysis, implement advanced strategies like bloom filters and indexes on expressions to optimize data retrieval, and explain why you should use user journeys in benchmarking instead of microbenchmark
PostgreSQL query optimization techniques for better database performance
Niall OHiggins · Jul 11, 2024
In my previous article, I discussed why Postgres performance tuning matters, warning signs you should pay attention to know if your Postgres database is struggling, and 8 parameters you can try to improve its performance and see results immediately. Today, we’ll take a closer look at Postgres query optimization techniques to fine-tune your queries for database efficiency. One article is not enough to master what it takes to optimize Postgres databases. In working with clients of all types of c
Latest Videos
Harry Tormey · 6 weeks ago
Migrating Coinbase's 56 Million Users to React Native: Key Lessons and Takeaways
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Streamlining Business Workflows with AI Automation
Harry Tormey · 12 weeks ago
How Novy Built Zelma for Emily Oster Using OpenAI and Postgres
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