Mobile · Intermediate · 2–3 weeks
Offline-first Field Inspection App
A mobile app for technicians who inspect equipment on site: checklists, photos, and signatures that work with no signal and sync later.
- React Native (Expo)
- TypeScript
- SQLite
- Supabase
Features
- Dynamic checklist templates loaded from the server
- Photo capture with on-image annotation
- Local-first storage with background sync and conflict handling
- Signature capture and PDF report export
- GPS-tagged inspections
Bonus: A small web admin dashboard where managers create templates and review submitted inspections.
Mobile · Intermediate · 2 weeks
Bluetooth LE Sensor Companion App
A phone app that discovers a Bluetooth Low Energy sensor, streams live readings, keeps a history, and sends settings back to the device.
- Flutter (Dart)
- flutter_blue_plus
- SQLite
- ESP32 or nRF52 as the peripheral
Features
- Scan, connect, and auto-reconnect to the device
- A custom GATT service and characteristics that you define
- Live charts of incoming readings
- Local history with CSV export
- Write settings like sample rate and thresholds back to the device
Bonus: Firmware updates delivered over Bluetooth straight from the app.
Data & ML · Intermediate · 1–2 weeks
Resume ↔ Job Description Matcher
Upload a resume and a job posting. It scores how well they match, highlights missing skills, and suggests stronger bullet points.
- Python
- sentence-transformers
- spaCy
- FastAPI
- Streamlit
Features
- PDF parsing and section extraction (experience, skills, education)
- Skill extraction against a curated skills taxonomy
- Semantic similarity scoring with a readable explanation
- Gap report listing missing and weak skills
- A small labeled test set that measures accuracy
Bonus: Benchmark three embedding models on your test set and publish the results table in the README.
Data & ML · Intermediate · 1–2 weeks
Webcam Hand-Gesture Controller
Recognizes hand gestures from a webcam in real time and uses them to control slides, media playback, or smart lights.
- Python
- MediaPipe
- PyTorch or scikit-learn
- OpenCV
Features
- Hand landmark extraction from live video
- Data-collection tool for recording custom gestures
- Trained classifier with a confusion matrix and accuracy report
- Smoothing and debounce so actions don't misfire
- Config file that maps gestures to actions
Bonus: Export the model to ONNX and run it fully in the browser with a live demo page.
Data & ML · Advanced · 2–3 weeks
Predictive Maintenance for Jet Engines
Predicts the remaining useful life of jet engines from sensor time series using NASA's C-MAPSS dataset, served behind an API with a monitoring dashboard.
- Python
- pandas
- LightGBM or PyTorch
- MLflow
- FastAPI
- Docker
Features
- Exploratory analysis and time-series feature engineering
- A baseline model and an LSTM, compared with proper time-based validation
- Experiment tracking in MLflow
- Model served through FastAPI inside Docker
- Dashboard showing predictions per engine
Bonus: Data-drift detection that flags when incoming sensor data stops looking like the training data.
Data & ML · Intermediate · 2 weeks
Codebase Q&A Assistant
Index any Git repository and ask questions like "where is authentication handled?" Answers cite the exact files and lines they came from.
- Python
- tree-sitter
- sentence-transformers
- pgvector or Qdrant
- FastAPI
- An LLM API
Features
- Code-aware chunking by function and class using tree-sitter
- Hybrid keyword and vector search
- Answers with file and line citations
- Incremental re-indexing when new commits land
- An evaluation set of 30+ questions that measures retrieval accuracy
Bonus: A VS Code extension so you can ask questions without leaving the editor.