Singistic
Cross-platform video & karaoke social platform serving 10,000+ active users, engineered using Flutter. Features AI-powered vocal/instrument separation pipelines to generate karaoke tracks from licensed masters, sub-50ms native audio-video playback sync, AirPlay/Chromecast integration, and automated serverless/EC2 media transcoding queues for processing user recordings cost-effectively at scale.
What I shipped
- Flutter client & casting: Cross-platform Flutter mobile client featuring sub-50ms synchronized karaoke playback, and AirPlay/Chromecast support for casting lyrics and synchronized video to external screens.
- AI vocal/instrument separation: Integrated AI-driven vocal separation models to isolate vocals andaccompaniment music, creating custom karaoke backtracks from licensed masters.
- Event-driven media queues: Built a cost-effective, cloud-native media processing pipeline utilizing AWS SQS queues, SNS notifications, and dynamically scaled EC2 media encoder instances for encoding/optimizing user video uploads with automatic audio-video synchronization offset correction.
- Apple Pay / Google Pay checkouts: Implemented secure mobile checkouts (Apple & Google Pay) and compliant in-app subscription billing for premium karaoke content.
By the numbers.
If we worked together.
I bring high-leverage product engineering and absolute operational discipline: shipping weekly, pressure-testing user inputs, and automating delivery pipelines.
See it in the wild.
This case study covers how Singistic was built — these links open what ships today: the live product, repo, demos, and supporting material.
NewScriber
Agentic news scraper & editorial audio briefing network. Scrapes tech and business news via Firecrawl, curates & scripts dual-host dialogues using Azure OpenAI, and renders high-fidelity multilingual voices via Gemini TTS.