Samuel Eguino

Vitalize

Healthcare workforce · Remote

• Built a bidirectional batch UKG integration serving 6 health systems (~50 hospitals live), syncing 500,000+ shifts of scheduling data.
• Built data-ingestion pipelines (Effect TS, PostgreSQL) that import and normalize employee data from UKG, Symplr, and CSV sources across 600+ hospital units.
• Built a scheduling recommendation engine that targets overtime and rule-violation overspend (mis-assigned travelers, consecutive-shift limits). It generates ~1,800 recommendations per 6-week scheduling period at $150–300 each, over $300k in savings per period.

Sunrun

Solar energy · United States

• Co-built the internal storefront software used by ~1,000 Sunrun sales representatives to sell solar in the field.
• Built the “Sun Simulation” service, a real-time preview showing customers how solar would change their home and electricity bill.
• Replaced manual Salesforce data entry with a UI that auto-filled solar designs and equipment (batteries, inverters) into Salesforce objects, keeping sales and processing teams compliant.
• Automated CAD design generation for electrical engineers from their equipment and site data, cutting design turnaround from ~1 week to 2–3 hours per project across ~1,000 designers.

FusionHit

Smart pool equipment · New York, NY

• Cut dashboard API latency from 20–30s to ~2s.
• Built AWS IoT Core + SQS services managing communication with 200,000+ pool-equipment controllers, powering the web and mobile apps that monitor and control them.
• Introduced test-driven development across the team, cutting new bugs by ~60%.

Caffeine

Live streaming · Remote

• Scaled interactive live-streaming infrastructure serving 60M+ monthly users.
• Shipped engagement features driving a 3× improvement in viewer engagement.

Teravision Technologies

Sports betting & media · Miami, FL

• Built a sports-betting platform from scratch in Go & Node.js serving 70k+ users internationally.
• Grew revenue 40% by implementing a Go payment flow supporting crypto payments.
• Cut development time 50% with a modular, reusable React & TypeScript component library.
• Extended a content-creator platform with Node.js third-party API integrations.

TrueLogic Software, LLC

Employee services · San Jose, CA

• Integrated Angular into an existing .NET application, restructuring it into web components with Angular Elements.
• Shipped redesigns of the admin, client, and other key apps.
• Engineered the move toward micro-frontends, making future changes cheaper across teams.

Applaudo Studios

Banking · Austin, TX

• Built React UI components for a banking system, including a rebuilt credit-request form flow.
• Automated alerting and monitoring for employees.
• Reinforced integrations with third-party email and notification tools.

Believe Solutions, LLC

Property rentals · Cochabamba, Bolivia

• Built a timezone-calculation system for cross-timezone scheduling, plus scheduled jobs for notifications and email.
• Integrated Stripe payment processing for online payments.
• Rolled out smart-lock support and overhauled the management admin (React) and client apps (React Native) for a house-rental platform.