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Marvin Kaunda
Mid-level Full-Stack Product Engineer specializing in SaaS and AI search
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About
Two-time founder and former CTO/CPO who has shipped and operated full-stack products solo, including a real-time community platform (Twitter/Slack-like) with Next.js/TypeScript, WebSockets, Redis, and strong post-launch analytics (PostHog/Sentry). Also built durable multi-step AI-agent workflows using Inngest with state machines, checkpointing, and validation gates, and has hands-on Postgres performance tuning experience validated via EXPLAIN ANALYZE.
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Key Strengths
- Solo end-to-end ownership (schema → backend → frontend → launch → iteration)
- Production observability and analytics instrumentation (PostHog, Sentry) with proactive UX follow-up
- Real-time product engineering (WebSockets, Redis, optimistic updates) for chat-like experiences
- Performance-minded React/Next.js UI patterns (Suspense/streaming, memoization, caching)
- Postgres query optimization with measured validation (EXPLAIN ANALYZE; index scan vs seq scan)
- Designing durable multi-step workflows with checkpointing, timeouts, and validation gates
- Startup execution in high-growth contexts (founder/CTO/CPO; 10k users, 3k DAU platform)
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