Contract: Staff Full-Stack Engineer

Upwork

Full-time Brazil, Brazil Computer Occupations

Posted:

February 27, 2026

Location:

Brazil, Brazil, Brazil

Job Description

You’ll participate in building the next generation of AI-powered matching and recommendation infrastructure for Upwork. This is an early-stage effort focused on moving from smart recommendations to agentic and autonomous matchmaking. You’re optimizing for:
System-level thinkers comfortable working in ambiguity.

Execution across backend, frontend, and architecture.

Curiosity and adaptability in a novel technical space.

Interest in AI-powered programming and foundational knowledge of LLMs.

Flexibility in tooling, with strongly preferred but non-mandatory tech: Java (backend) and Vue (frontend).
Responsibilities:
Design and implement core systems for AI-powered matchmaking, integrating frontend, backend, and agentic workflows.

Own architectural decisions and collaborate on long-term platform direction.

Lead planning, scoping, and execution of feature initiatives in partn...

Apply for this Job

Submit your application for the Contract: Staff Full-Stack Engineer position at Upwork.

Apply Now Save for Later

Job Overview

Job Type: Full-time

Location: Brazil, Brazil

Posted: February 27, 2026

Deadline: April 08, 2026