Node.js Lambda app development.
AWSPics is "an AWS CloudFormation stack to run a serverless password-protected photo gallery", built and open-sourced by JP Simard. I made some significant contributions to the AWSPics codebase, in order to get it ready for powering my own personal private photo gallery site.
The main feature that I added to AWSPics, was the ability to organise photos into a two-level hierarchy of "collections" and albums, instead of just a one-level hierarchy of albums. I also contributed some smaller bug fixes.