I build and ship
real SaaS products,
end to end.

Most on-chain data tools are slow, expensive, or retrospective — by the time a retail trader sees that a whale moved $40M into a token, the move is already priced in. I wanted a system that watched Ethereum in real time, identified meaningful wallet activity, scored every event against what the market actually did afterward, and learned which wallets were worth following.

A Go service running on its own infrastructure that ingests Ethereum blocks in real time, profiles 177,000+ wallets across nearly 2M whale events, scores each move 0–100 based on signal quality, labels known entities (CEXs, bridges, funds), and surfaces the top performers to a Telegram channel. The system self-grades — every prediction gets compared to the price action that followed, so the pool of 'smart money' wallets (2,500 and counting) emerges from data, not from my opinion.

Consultation buyers needed a personalized discount code that unlocked a higher-tier coaching subscription — but the discount had to expire 15 minutes after their call ended to create real urgency, and each code had to be unique and single-use.

A coupon generator that creates a unique CALL-XXXXXX code per consultation, ties it to the user's Supabase record, enforces the post-call expiration window via Stripe metadata and server-side validation, and handles edge cases like timezone mismatches and late-starting calls.

Off-the-shelf fitness apps treat workouts as isolated events. They log sets and reps but miss the full picture — how training load interacts with recovery, when to deload, which rehab protocol fits a specific injury, whether the client is actually progressing or just going through the motions. Coaches end up Frankensteining together a spreadsheet, a notes app, and three separate trackers. I wanted one system where the workout, the tracking, and the coaching logic all live in the same place.

Performance Lab — a self-guided training subscription inside Crisler.Fit where members get algorithmically-generated workout plans, track every set and rep, log recovery and readiness, and access rehab protocols tailored to common injuries. The data feeds back into the next week's programming so training evolves with the athlete. Built as a native part of the platform, not a bolt-on.