Junior AI Prototyping Engineer

Mercado Eletrônico; Denver (CO); Híbrido; USD 80.000 - 120.000; Tempo integral

Benefícios oferecidos por esta vaga

Medical, Vision, and Dental coverage

Paid Time Off

6 company observed holidays

Resumo da vaga

Mercado Eletrônico in Denver is seeking a versatile AI-focused developer to design, build, and evolve AI-powered prototypes and features with a POD. You will turn journeys into prompts and flows, compare language models, and iterate on agent behavior while collaborating with Product Builders.

Work is hybrid in the Denver area (1–2 days in the office). The role emphasizes hands-on AI, API integrations, and documentation of decisions and learnings to shape real AI products for B2B use cases.

Qualificações

• Bachelor's degree in CS/engineering, information systems, design, or related field.
• Hands-on AI project experience, solo or team-based.
• Practical use of AI-assisted development tools such as Claude Code, Cursor, or Codex.
• Basic programming logic and a real desire to learn to code.
• Basic knowledge of Git.
• Curiosity, autonomy, and comfort with failing fast and adjusting.
• Good communication skills to explain what you built and why.
• Fluency in Portuguese or Spanish is required.

Responsabilidades

• Build prototypes, agents, and AI-powered features with your POD, using Claude Code, Cursor, and Codex.
• Turn user journeys and business rules into prompts, agent flows, and working React applications.
• Integrate and compare language models through OpenRouter, choosing the best fit for each use case.
• Test, evaluate, and iterate on agent behavior, including use cases, edge cases, and response quality.
• Model and query data in Postgres and Supabase to bring prototypes to life.
• Deploy and evolve prototypes and vibe apps on Vercel, with version control on GitLab.
• Support the POD's developer with API and service integrations in Golang.
• Clearly document what was built, including prompts, decisions, flows, and lessons learned.
• Take part in discovery sessions with users and the Product Builder to understand the problem before building.
• Other duties assigned.

Conhecimentos

AI project experience

Programming basics

Git basics

Communication skills

Portuguese or Spanish fluency

Curiosity and autonomy

Formação

Bachelor's degree in CS/Engineering/IS/Design or related field

Ferramentas

Claude Code

Cursor

Codex

OpenRouter

Postgres

Supabase

Git

OpenAI APIs

Descrição da vaga

Mercado Eletrônico in Denver is seeking a versatile AI-focused developer to design, build, and evolve AI-powered prototypes and features with a POD. You will turn journeys into prompts and flows, compare language models, and iterate on agent behavior while collaborating with Product Builders.

Work is hybrid in the Denver area (1–2 days in the office). The role emphasizes hands-on AI, API integrations, and documentation of decisions and learnings to shape real AI products for B2B use cases.