Forward Deployed Engineer Junior

Mercado Eletrônico; Denver (CO); Hybrid; USD 80,000 - 120,000; Full time

Benefits offered by this job

Medical, Vision, and Dental coverage

Paid Time Off

6 company observed holidays

Job summary

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.

Qualifications

• 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.

Responsibilities

• 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.

Skills

AI project experience

Programming basics

Git basics

Communication skills

Portuguese or Spanish fluency

Curiosity and autonomy

Education

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

Tools

Claude Code

Cursor

Codex

OpenRouter

Postgres

Supabase

Git

OpenAI APIs

Job description

The FDE in this role is responsible for designing, building, and evolving AI-powered prototypes, agents, and features together with their POD. This includes turning user journeys and business rules into working solutions, testing and refining agent behavior, and taking part in discovery to understand the problem before building. Must be able to work within a team as well as independently.

Location:

Hybrid - Denver area, CO (1 to 2 days per week in the office).

ROLE RESPONSIBILITIES:

• 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.

SKILLS AND COMPETENCIES REQUIRED:

• Bachelor's degree (completed) in Computer Science, Engineering, Information Systems, Design, or a related field.
• Hands-on experience building something with AI, on your own or in projects: an agent, an app, an automation (we want to see it!).
• 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.

NICE TO HAVE:

• Basic knowledge of SQL, Postgres, or Supabase.
• Projects deployed on Vercel or similar platforms.
• Experience using LLMs through APIs (OpenRouter, Anthropic, OpenAI, or similar).
• Basic knowledge of REST APIs and integrations.
• Familiarity with prompt engineering and LLM evaluation.
• Interest in product, UX, and B2B business.

WHY JOIN US:

• Build real AI products used by large companies from your first month.
• Work side by side with Product Builders and developers, with close mentorship.
• Access to the latest AI tools on the market.
• A clear growth path within the POD model.

ME

Mercado Eletrônico specializes in B2B e-commerce solutions, with a strong network of buyers and suppliers utilizing a powerful combination of technology and services.

Compensation and Benefits

Benefits: Medical, Vision, and Dental coverage.

Paid Time Off: vacation, sick leave, and 6 company observed holidays.