Open to opportunities

Kelvan Brandt

@kelvanbrandt

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Senior full-stack engineer building and scaling early-stage products with high-impact results.

United States

Message

What I'm looking for

I seek roles at early-stage or growth startups where I can architect scalable systems, improve performance, mentor engineers, and deliver measurable product and business impact.

I am a senior full-stack engineer focused on designing and shipping scalable, production-grade systems for early-stage companies. I specialize in distributed systems, performance optimization, and full-stack product architecture, with hands-on experience across web, mobile, and data-intensive platforms.

I have founded and led engineering initiatives, recruited and mentored teams, and delivered measurable outcomes—ranging from reducing infrastructure costs by 50% to improving developer velocity and identifying critical product economics issues that saved companies tens of thousands per month. I prioritize pragmatic solutions that align engineering execution with business goals.

Experience

Work history, roles, and key accomplishments

Current

Founder / Senior Full-Stack Engineer

Current

Kelvco LLC

Oct 2020 - Present (5 years 8 months)

Founded a consulting and product development firm delivering architecture, scalable systems, and performance solutions for early-stage companies; worked directly with founders and small engineering teams to ship production-ready platforms.

React TypeScript AWS Distributed Systems Performance Optimization CI CD System Architecture

Senior Full Stack Engineer

Kaiber

Oct 2024 - Mar 2025 (5 months)

Fixed core rendering and memoization to scale canvas node capacity ~35→~2000, reduced crash reports 85% by resolving linting dependency issues, and optimized HMR from 6.7s to 0.5s to improve developer velocity.

React TypeScript Performance Optimization Debugging Sentry Hot Module Replacement Frontend Architecture Testing

Technical Lead

STAR/CHILD

Oct 2023 - Oct 2024 (1 year)

Recruited and led a 4-engineer team, tripling sprint velocity and delivering a cross-platform MVP in 5 months; built ETL and GROQ layers to cut API latency 6s→0.75s and created a unified Next.js+Expo router to improve app performance 5×.

Next.js React Native Expo ETL GROQ Performance Optimization Team Leadership

Founder / Senior Full-Stack Engineer

Flip Sourcer

Jan 2022 - Sep 2023 (1 year 8 months)

Built a SaaS platform for Amazon resellers, scaling scraping infrastructure to 30M+ products/day, re-architecting to an event-driven AWS backend to halve infrastructure costs (~$10k/month), and implementing rate-limited queues for parallelized processing.

AWS Event Driven Architecture Data Pipelines API Integration Scaling

Senior Full-Stack Engineer

GrowthBook

Jun 2022 - Nov 2022 (5 months)

Implemented enterprise permissioning supporting organizations, roles, and granular access control, and built integrations to enable deployments via Vercel for developer workflows.

React TypeScript Permissions Access Control Backend Development CI CD Testing