Roberto Espinoza

Senior Software Engineer

Zipdev

May 2024 - Current (1 year 10 months)

Constructed a feature flagging and A/B testing platform, using PostHog, to optimize controlled feature deployment and user behavior analysis. Developed and configured RAG agents with LangChain and OpenAI to automate intelligent query resolution processes. Integrated Stripe payment systems to enhance transaction processing and subscription management reliability. • Facilitated secure, real-time chat functionalities with dynamic age-restriction mechanisms through the creation and implementation of a WebSocket-based architecture with Vue.js. • Engineered RESTful APIs for chat operations, integrating Google OAuth for secure user authentication workflows. • Reduced deployment latency and operational expenditure by orchestrating Kubernetes worklo

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FullStack Developer

SHINE SOLAR

May 2023 - Current (2 years 10 months)

Configured UI testing workflows with Storybook to strengthen component reliability and improve cross-team collaboration. Containerized development environments with Docker on Azure infrastructure to streamline deployment workflows and enhance efficiency. Planned and executed project timelines and tasks through Asana to secure on-time milestone delivery. • Drove data-driven decision-making and interdepartmental insights by architecting analytics reports, using Node.js/SQL/Sequelize. • Delivered user-focused solutions by developing responsive, high-quality web interfaces via React.js, Next.js, and TypeScript. • Achieved scalable performance in high-traffic environments by executing stress testing and optimizing database queries. • Improved sy

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Full-stack developer

Altatekh

Apr 2021 - May 2023 (2 years 2 months)

Established reliable communication between distributed services by contributing to a microservices architecture with Java, Spring Boot, Node.js, RabbitMQ, and Kafka. Designed and implemented AWS AppSync integrations for real-time updates to enhance data synchronization and user experience. • Transformed user interactions and lowered load times by engineering scalable React applications with Redux Toolkit. • Sustained 100K+ concurrent users and facilitated data exchange by architecting high-performance RESTful APIs, using Django. • Improved multi-system integrations by engineering secure and efficient messaging solutions with RabbitMQ and Kafka. • Accelerated deployment speed and system reliability by automating infrastructure provisioning w

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Full Stack Developer

Psicología Autodidacta

Sep 2019 - Jan 2023 (3 years 5 months)

Developed HIPAA-compliant architecture by leveraging AWS services (Cognito, DynamoDB, Lambda, and S3) to secure sensitive data. Executed unit testing with Jest, React Testing Library, and Mocha while validating code stability and functionality. Deployed monitoring solutions with CloudWatch and Sentry to diagnose and resolve platform issues for system uptime. • Architected a scalable and fault-tolerant e-learning platform to enhance user experiences under varying traffic conditions. • Engineered APIs with AppSync and GraphQL, achieving 90% code coverage in testing and optimizing data flow. • Boosted platform visibility by 50% by implementing technical SEO improvements and advanced SEO analytics. • Refined deployment pipelines and operational

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Co-founder and in charge of marketing

Ica Adventures

May 2019 - Feb 2021 (1 year 10 months)

- Digitalización del negocio - Creación y manejo de perfiles en Airbnb, Booking, Agoda, Trivago, etc - Creación de campañas publicitarias (Google ads, FB ads) - Local SEO - Contacto con agencias de viajes para creación de promociones,etc

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Full Stack Developer

ANDINA COMMERCE

Sep 2018 - Mar 2020 (1 year 7 months)

Developed full-stack apps with Django and JavaScript frameworks while balancing front-end and back-end responsibilities. Provided actionable insights that informed strategic business decisions by automating data analysis and visualization processes, using Python. • Led end-to-end delivery of the core storefront (React/Next.js) and internal admin console; improved Lighthouse performance score from 59→94 and cut First Contentful Paint by 38% • Built a GraphQL gateway (Apollo Server on Node.js) with federated schemas powering catalog, pricing, and inventory; reduced over-fetching and trimmed average payload size by 45%

Roberto Espinoza

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Roberto Espinoza