Senior Full Stack Product Engineer

Hopper

. Identify and execute improvements to the codebase that make it easier for both humans and AI agents to move fast and ship safely.

Posted 5/7/2026contractRemote • 🇦🇷 ArgentinaSeniorWebsite

Tech Stack

Tools & technologies

Scala

About the role

Key responsibilities & impact

Identify and execute improvements to the codebase that make it easier for both humans and AI agents to move fast and ship safely.
Work with a group of senior engineers in a low-process environment powered by trust and autonomy.
Drive decisions and consensus asynchronously with thoughtful documentation and specs.
Build new features from top to bottom — from UX to database. Ship fast. Learn fast. Repeat.
Architect scalable solutions and foundational patterns that let us efficiently launch new partner experiences.
Work directly with PMs and business partners to define and refine our roadmap. Your voice and technical vision matter.
Collaborate with a diverse group of people, giving and receiving feedback for growth.

Requirements

What you’ll need

A natural drive to fearlessly dive into an unknown codebase and deliver results fast.
Strong product thinking — your conception of quality and architecture is anchored in the customer experience, not in technical elegance for its own sake.
The ability to direct AI agents and automated workflows to build and maintain complex systems, and the judgment to know when to step in and when to let them run.
Experience designing the guardrails and feedback loops that keep AI-assisted development productive and reliable.
Experience with, or a mastery-level willingness to learn, distributed system development in Scala.
The ability to articulate not just how you'd solve a problem, but why, and what tradeoffs you're accepting.

Benefits

Comp & perks

This position is offered as an Independent Contractor role (Locación de Servicios) based in Argentina.
The successful candidate will engage with Hopper as an independent service provider and will not be considered a legal employee under Argentine Labor Law.
Consequently, the contractor is solely responsible for their own equipment, workspace, and compliance with all local tax and social security obligations, including registration and payments under the Monotributo or Régimen General (AFIP).
This engagement is governed by a commercial service agreement and does not carry eligibility for company-sponsored benefits, statutory 13th-month salary (Aguinaldo), or paid vacation (Vacaciones pagas) typical of a traditional employment relationship.

ATS Keywords

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Hard Skills & Tools

codebase improvementdistributed system developmentScalaAI agentsautomated workflowsUX designdatabase architecturescalable solutionsfeedback loopsguardrails design

Soft Skills

product thinkingcommunicationcollaborationfeedbackdecision makingautonomytrustproblem solvingjudgmentadaptability