Roberto Espinoza Senior Software Engineer - AI / Agent Engineer

Senior Software Engineer

Zipdev

May 2024 - Current (2 years 5 months)

Building production LLM agent infrastructure and full stack systems across client engagements.

• Architected and shipped a production 7 tool Model Context Protocol (MCP) server on Cloudflare Workers powering conversational product search and lead capture.
• Built a pgvector semantic search pipeline with OpenAI embeddings that maps free text queries to structured filters.
• Engineered a stateful, multi tenant MCP architecture with dynamic tool registration and admin JWT gating.
• Connected Claude and OpenAI agents via the Vercel AI SDK with an embeddable AI chat widget (Vite/Preact, SSE).
• Built feature flagging and A/B testing with PostHog and integrated Stripe payments.
• Drove quality in a Turborepo an

FullStack Developer

SHINE SOLAR

May 2023 - May 2024 (1 year 1 month)

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 databa

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Full-stack developer

Altatekh

Apr 2020 - May 2023 (3 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

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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 deploy

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Web Developer

Mundo Digital

Sep 2018 - Mar 2020 (1 year 7 months)

Built and maintained websites for e-commerce, blogs and hotels as part of a development team.

• Wrote the code for e-commerce, blog and hotel websites.
• Developed user interfaces with JavaScript and modern frameworks.
• Wrote extensible, maintainable code as part of a team.
Tech stack: React.js, WordPress, PHP, JavaScript, jQuery, Shopify, CSS, SCSS, MySQL

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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%

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Ski Lift Operator

Ober Gatlinburg, Inc.

Dec 2017 - Apr 2018 (5 months)

Seasonal ski lift operator at a mountain resort in Tennessee, United States. Responsible for safe loading and unloading of guests, lift operation and daily safety checks, and front-line guest service in a fast-paced, high-traffic environment.

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Co-founder and in charge of marketing

Ica Adventures

May 2017 - Feb 2018 (10 months)

Co-founded a hospitality business and led its digital presence and marketing.

• Digitized the business operations.
• Created and managed listings on Airbnb, Booking, Agoda, Trivago and other platforms.
• Ran paid advertising campaigns (Google Ads, Facebook Ads).
• Handled local SEO.
• Partnered with travel agencies to build joint promotions.

Roberto Espinoza

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