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Joel Vizcarra

@joelvizcarra

Message

I build high-throughput distributed systems and scalable web platforms with Node.js, Python, React, and Next.js.

Peru

Message

At Talk Shop Live, I migrated an analytics platform from a monolith to event-driven microservices, delivering a Node.js ingestion system processing up to 600K events per hour and reducing errors by 65%.

I own frontend architecture across five Next.js microfrontends and built AI-powered product-content evaluation and generation features. I also reduced API latency by 60%, improved backend performance by 21%, and introduced Sentry and Datadog observability that cut production incidents by 40%.

Across Growth Acceleration Partners, Frasal, Pallay, and Inka Labs, I've built shared React design systems, unified data platforms, CI/CD pipelines, fintech integrations, e-commerce payments, and contract-management products. My work has improved release times, test coverage, sales, application performance, and onboarding across teams and products.

I lead end-to-end technical execution across backend systems and frontend architecture, from scalable APIs and distributed services to reusable UI foundations. I enjoy raising engineering standards through architecture reviews, testing, mentoring, and practical delivery systems.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Talk Shop Live

Jun 2023 - Present (3 years 3 months)

Led migration of analytics platform from monolith to microservices, designing architecture and delivering a high-throughput Node.js ingestion system processing up to 600K events/hour. Owned frontend architecture of 5 Next.js microfrontends and implemented AI-powered content evaluation feature.

NodeJS S3 Redis Next.js React NestJS Sentry Datadog META Pixels Conversion API AI LLM Microservices Architecture Frontend Architecture Design Systems Observability

Senior Software Engineer

Growth Acceleration Partners

Jun 2022 - May 2023 (11 months)

Contributed to a shared design system using Bit.dev, engineering 30+ reusable React components. Designed and evolved frontend architecture for 3 React applications and implemented integrations between Tableau and React applications.

React Bit.Dev Zustand GraphQL Apollo Tableau JavaScript SDK DynamoDB REST Apollo Client

Lead Software Engineer

Frasal

Jun 2020 - May 2022 (1 year 11 months)

Established engineering best practices across 2 teams and 3 repositories, increasing test coverage to 80% and reducing bugs and regressions by ~30%. Standardized local development environment through Docker and improved API performance by ~50%.

Testing Docker ORM Database Indexing Caching i18n Multilingual API Performance

Lead Fullstack Engineer

Pallay

Apr 2018 - May 2020 (2 years 1 month)

Built the team's engineering foundation for a 3-engineer team across 10 repositories, introducing Agile practices, code review, and Git workflows. Automated CI/CD pipelines using GitHub Actions and increased eCommerce sales by ~30% with an automated payment processing workflow.

Agile Code Review Git GitHub Actions CI CD Docker Payment Processing Husky Prettier

Software Engineer

Inka Labs

Aug 2016 - Mar 2018 (1 year 7 months)

Engineered secure backend integrations with banking and identity verification providers using Django, reducing identity verification time by ~90%. Improved frontend performance with code splitting and React Query caching, and built 4 React and 2 React Native applications.