.png){kind=logo}
John Kenny
Senior Full-Stack Engineer specializing in Web3 and FinTech
Connect with John
John already has a relationship with Reval, so a warm intro from us gets a much better response than cold outreach.
Recommended
Already have an account?
About
Full-stack engineer with deep startup experience (pre-seed through IPO/SPAC) currently building a Next.js/TypeScript SaaS sports analytics platform with a complex Postgres-based entitlement/ACL system. Has delivered measurable UX/business impact (35% retention lift, 40% volume increase) and built production-grade daily ETL + model training/inference workflows with validation and checkpointing for reliability.
Find your next great hire
Our AI agents source, screen, and vet candidates for your open roles. Get qualified candidates within 48 hours.
Key Strengths
- Shipped and owned an end-to-end Next.js/TypeScript SaaS feature through production deployment
- Improved UX funnel outcomes: +35% retention and +40% transaction volume by reducing clicks from 5 to 2
- Designed complex Postgres entitlement/ACL schema for multi-tenant access control
- Optimized entitlement/plan-gating query logic to improve performance (~15%)
- Built durable, stage-based ETL + daily training/inference workflow with validation gates and checkpoints
- Strong production engineering practices: observability, safe change boundaries, deterministic backend behavior
- Owned customer-facing products end-to-end (minting website and gaming leaderboard at Consortium 9)
- Designs modular MVPs to balance speed with future extensibility
- Deep security/compliance-aware architecture for crypto wallets using ZK proofs to avoid server-side key custody
- Microservices experience with AWS Lambda + RabbitMQ; identified over-engineering and improved maintainability via service self-containment
- Optimized systems for bursty usage patterns using caching
- Shipped React/Next.js production product end-to-end under tight deadline (architected stack, implemented from scratch)
- High-scale production impact (reported ~3M lifetime volume) with minimal defects (one production bug tied to last-minute 3rd-party integration)
- Payment-flow/concurrency rigor (implemented locking pattern to protect transaction integrity)
- Data-driven UX iteration (used analytics to identify navigation friction; redesigned IA/UI to improve flow)
- Full-stack delivery across web, mobile, and backend (roughly 50/50 app vs infrastructure)
- Designed Python microservice backend with OAuth auth, URL versioning, tests, and CloudWatch observability
- Designed relational sports/betting analytics schema and improved performance via indexing
Like what you see? We'll introduce you to John directly.
Experience
Skills
Languages
Interested in John?
We'll personally introduce you - no strings attached.
Build your dream team with Reval
Our AI agents source, screen, and vet candidates for your open roles. Get qualified, high-intent candidates on your desk within 48 hours.
Discover more candidates like John
Search across thousands of pre-screened, high-quality, high-intent candidates on Reval.
Search Talent