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Resume

Eduardo Sotero, Senior Frontend Engineer

Florianópolis, Brazil · Full EST overlap

eduardoliberatosotero@gmail.com · github.com/dudusotero · linkedin.com/in/eduardoliberatosotero

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Experience

Senior Software Engineer · Lithios Apps

2026 - Present · Raleigh, NC · Remote

  • I lead AI engineering across the company: I set the standards for Claude Code, Codex, and Cursor, and run the internal training for engineers.
  • Built the platform every client project now starts from: Next.js and Vite on the frontend, Fastify APIs, MongoDB/MySQL, Bull queues, Better Auth, S3 and Sentry, deployed to Railway. Standing up a new MVP went from two days to thirty minutes, environment variables included and demo-ready.
  • Building a library of Claude Skills, specialized agents for engineering automation. One reviews maintenance-contract candidates against technical and usability criteria set by leadership and outputs a standard report.
  • I own client products end to end, from the interface down to the data layer and the deploy.

Senior Frontend Engineer · Rooms To Govia Toptal

2022 - 2026

  • Owned the buying journey of a top US furniture retailer serving millions of monthly visitors, from the storefront interface to the data layer behind it.
  • Designed and built the GraphQL BFF that unified the services behind the storefront into one schema, and made it the standard integration path for new features.
  • Worked the serverless side of the same storefront: Firebase Cloud Functions behind user creation and the analytics pipeline, and a checkout running several payment providers rather than one.

Software Engineer · FemTec Health / Birchboxvia Toptal

2022

  • Modelled the content schema and the i18n routing for three regional storefronts, so US, UK and Spain share components and diverge only in content.
  • Took engineering out of the publishing path: non-technical teams manage localized content on their own.

Senior Frontend Engineer · Mothershipvia Toptal

2022

  • Owned the product pages and refactored the map interface that dominated their LCP, from the render path down to how the data reached it.
  • Integrated HubSpot lead capture using GraphQL, Styled-components, and Apollo.

Frontend Developer · The Clorox Companyvia Toptal

2021 - 2022

  • Built marketing pages for the Hidden Valley and Kingsford brands, embedding React components into the WordPress platforms behind them.
  • Migrated the smaller brand sites off Eleventy onto Next.js.

Frontend Engineer · Lithios Appsvia Toptal

2021 - 2022

  • Built React components and frontend structures across startup projects with React, REST APIs, Redux, Jest, Tailwind CSS, and Styled-components.
  • This engagement led to a direct hire at Lithios Apps in 2026.

Chief Technology Officer · Artio Events, Inc.

2020 - 2021 · Salt Lake City, UT · Remote

  • CTO and first engineer. Architected a real-time events platform from commit zero: WebRTC media with Socket.IO signalling, scheduling and live audience interaction on PostgreSQL, Firebase and AWS.
  • Owned every technical decision, from the React and TypeScript standards the team built on to the data model and the deploy, and took the product to launch.

Front-end Engineer · FeraCode

2019 - 2020 · Florianópolis, Brazil

  • Led architecture for a cross-platform B2C media-exchange marketplace across web, mobile and APIs, on React, TypeScript, Node.js, GraphQL and REST.
  • Managed a team of 4 engineers, owning delivery from the interface through the integrations behind it.

Front-end Developer · CreativeDrive

2018 · Florianópolis, Brazil

  • Turned designs into responsive interfaces with React and Angular at agency pace, meeting tight deadlines.
  • Reused component patterns across projects, cutting rework between clients.

Web Developer · VHL Sistemas

2017 - 2018 · Florianópolis, Brazil

  • Built and maintained frontend features of a time-management platform in AngularJS, Vue, and PHP.
  • Added E2E tests with Nightwatch.js and component patterns to reduce regressions, improving team reliability and productivity.

Skills

Frontend

TypeScriptReactNext.jsDesign SystemsFigma to ReactTailwind CSSStorybookAccessibility (WCAG 2.2)Core Web Vitals

APIs & Data

GraphQLApollotRPCREST APIsBFF architectureSchema designPostgreSQLMongoDBAuthenticationStripe

Runtime & Infrastructure

Node.jsFastify / ExpressServer ComponentsRoute HandlersServer ActionsCachingEdge runtimeBackground jobsFirebase / Cloud FunctionsDockerAWSVercelCI/CDSentry

AI Engineering

Claude CodeClaude SkillsAgent DesignMCP ServersCodexCursorSpec-first prompting

Education

  • Universidade do Sul de Santa Catarina

    Bachelor's in Information Systems · 2011 - 2016

  • Senac Santa Catarina

    Technician, Java Development · 2010

Languages

  • Portuguese · Native
  • English · Fluent, C1
  • French · Basic to intermediate