Derek Papierski — AI & software engineer
I’m Derek. I build software, care about design, and like figuring out how things work.
Projects
Selected work
- RENEWProject started 2025Scleroderma study appEngineering & product design
A study app for managing fatigue with scleroderma - SproutProject started 2025AI health coachSystem design & AI engineering
An AI health coach inside RENEW - StitchesProject started 2026Nonprofit archive siteDesign & development
A new website for a nonprofit's archive of handmade dolls - Code CoachProject started 2024Coding practice platformDesign & full-stack development
A coding practice platform for a university ACM chapter - SpeakLabProject started 2026Communication & learning toolSystem design & full-stack development
A communication and learning tool powered by fully local AI - PE TrackerProject started 2026Ownership research toolData engineering & full-stack development
Tracing brand ownership through parent companies and dated public records
Systems & features
- RENEW RedesignProject started 2025RENEWProduct design, React Native
RENEW Redesign — Product design, React Native. - RENEW UpgradeProject started 2025RENEWReact Native, Expo
RENEW Upgrade — React Native, Expo. - RENEW BackendProject started 2025RENEWPHP, MySQL
RENEW Backend — PHP, MySQL. - Sprout RAG PipelineProject started 2025SproutRetrieval, LLM systems
Sprout RAG Pipeline — Retrieval, LLM systems. - Sprout Long-Term MemoryProject started 2025SproutLLM systems
Sprout Long-Term Memory — LLM systems. - Sprout EvalsProject started 2025SproutLLM evaluation
Sprout Evals — LLM evaluation.
Earlier
- Bank customer churnProject started 2024Data analysisData analysis & modeling
Which bank customers leave, and a model to flag them - Gaming sentiment analysisProject started 2024Data analysisData analysis & modeling
What players say about games, through sentiment classification