Senior AI-Native Engineer - Remote, High-Impact SaaS

Remote Jobs; Ciudad de Mendoza; Remote; ARS 212,038,000 - 318,057,000; Full time

Benefits offered by this job

USD payment

Remote work

Argentina holidays

English classes

Referral program

Learning platforms

Job summary

Darwoft seeks a Senior/Staff Software Engineer to join an AI-native, Claude Code/Codex–driven SaaS platform in LATAM. You will navigate a large codebase, design architecture, and push reliability while leveraging AI agents to accelerate delivery.

This remote contractor role focuses on building production software, not ML research. You’ll collaborate with product leadership, own critical systems, and apply pragmatic decisions in a fast-growing setting.

Qualifications

• Strong professional experience building and operating production software systems.
• Excellent software engineering fundamentals, including architecture, system design, debugging, testing, and maintainability.
• Experience working with large or complex existing codebases.
• Strong backend or full-stack engineering experience using modern programming languages and frameworks.
• Experience building modern web applications and SaaS products.
• Strong understanding of APIs, application architecture, integrations, data modeling, and distributed systems.
• Experience with relational databases and production data environments.
• Strong understanding of automated testing and modern software development practices.
• Familiarity with cloud environments, CI/CD pipelines, deployments, and production operations.
• Ability to reason through technical trade-offs and make pragmatic architectural decisions.
• Strong ownership and ability to work independently in an evolving product environment.
• Product mindset: you understand not only how to build something, but also why it should be built.

Responsibilities

• Navigate, understand, and evolve a large existing production codebase.
• Design and implement new product capabilities across a complex SaaS platform.
• Make pragmatic architectural and system design decisions as the product continues to scale.
• Identify technical debt, architectural risks, reliability issues, and opportunities for improvement.
• Use Claude Code, Codex, Cursor, Copilot, or similar AI coding agents extensively throughout the software development lifecycle.
• Leverage AI agents to explore codebases, design implementations, generate and refactor code, debug issues, write tests, and accelerate delivery.
• Build and evolve backend services, APIs, integrations, data models, and application workflows.
• Contribute across the application stack when needed.
• Strengthen automated testing, maintainability, observability, reliability, and production readiness.
• Improve development workflows, tooling, automation, and engineering practices.
• Troubleshoot complex issues across application, data, and infrastructure layers.
• Balance development speed with software quality and long-term maintainability.
• Work closely with product leadership to translate business problems into effective technical solutions.
• Help a small engineering team achieve significantly greater development leverage through AI-assisted engineering.

Skills

Production software

Architecture & design

Large codebases

Backend or full-stack

Web apps & SaaS

APIs & distributed systems

Relational databases

CI/CD & cloud

Automated testing

AI-native development

Tools

Claude Code

OpenAI Codex

Cursor

GitHub Copilot

Windsurf

Job description

Darwoft seeks a Senior/Staff Software Engineer to join an AI-native, Claude Code/Codex–driven SaaS platform in LATAM. You will navigate a large codebase, design architecture, and push reliability while leveraging AI agents to accelerate delivery.

This remote contractor role focuses on building production software, not ML research. You’ll collaborate with product leadership, own critical systems, and apply pragmatic decisions in a fast-growing setting.