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Passerelle AI | Multilingual Communication Platform for Healthcare & Legal Services
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Creatives on Contra have earned over $150M and we are just getting started
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How I Built a 60 FPS Real-Time Esports HUD Builder & WebGL Broadcast Engine for BLOB
Live esports broadcasts don’t forgive dropped frames.
When competitive titles like Valorant, Counter-Strike 2, and Rocket League stream tournament telemetry at 60 updates per second, standard React virtual DOM reconciliation simply chokes under the load in OBS Studio. I was brought on by BLOB Productions following a competitive head-to-head architectural evaluation to completely re-engineer their broadcast overlay infrastructure from the ground up.
What We Built:
- 60 FPS Headless HUD Engine: Built a renderer-independent JSON scene graph with Figma/Rive-grade interaction math (multi-selection, aspect-ratio locked transforms, boolean operations, and 360° pivot rotations).
- Complete Vector & Style Stack: Multi-fills with linear/radial gradients, multi-strokes, inner/drop shadows, per-corner radiuses, blend modes, and Gaussian blurs.
- Reactive Data & Motion Logic Engine (Core IP): Continuous value mapping (e.g., player health mapped to visual bar width), dynamic scope inheritance across duplicated player cards, repeaters, and event-driven trigger animations.
- Ultra-Low Latency OBS Runtime: A lightweight PixiJS (WebGL) runtime with signal-based direct node mutations and a jitter-smoothing dead reckoning buffer—maintaining $<16ms Time-to-Glass.
- Zero-Egress Client-Side Edge Merge: Merged high-frequency P2P/WebSocket telemetry directly on the client edge with static tournament metadata, eliminating expensive cloud compute bottlenecks.
- Cloud Persistence & Publishing Pipeline: CockroachDB/PostgreSQL draft-versus-live isolation, version rollback, and an automated P0 verification test suite.
Read the full case study with architectural diagrams and demo breakdown here: 60 FPS Real-Time Esports HUD Builder
Looks rrally cool!
Real-Time Financial Ledger & Analytics Dashboard
A full-stack web application for automated bookkeeping, liquidity tracking, and cash flow visual analytics.
Really solid use case for combining automated bookkeeping with real-time analytics. The liquidity and cash-flow visibility is especially valuable—having financial data updated continuously makes the dashboard much more actionable than traditional reporting.
FLRanked
Competitive platform for music producers. Producers compete in timed 20-minute beat-making matches, all starting from the same melody file. The community votes, and an ELO system moves players across 12 rank tiers. Built with Next.js, with Discord integration that syncs ranks automatically. The hard part wasn't the interface. It was designing a ranking system that stays fair when the judges are the players themselves. The platform is live with an active player base.
A couple of additions that work well for self-judged platforms: give new players a provisional rating with a higher K-factor until they've played ~20 matches, so they climb to their real tier quickly instead of getting stuck low; and keep an eye on vote patterns — if a specific...
