Software Engineer, Developer Infrastructure

The Role

This is a high-leverage infrastructure role. You'll be the engineer who makes every other engineer on the team more productive. You'll build the systems that close the feedback loop between code generation and code verification, so that an engineer (or an agent) can write a change, get an automated signal on whether it works, and iterate without waiting on manual testing.

What You'll Do

• Build the Verification Machine (50%)

  • Design and extend device simulators and mocks that reduce our dependency on physical hardware for testing
  • Build and maintain CI/CD pipelines across embedded, cloud, and mobile (GitHub Actions, Bazel)
  • Extend our hardware-in-the-loop (HIL) test infrastructure for device commissioning, OTA updates, and telemetry validation
  • Automate the manual test scenarios that currently block releases (pairing flows, firmware upgrades, cloud integration)
  • Debug and eliminate flaky tests, CI must be a source of truth, not noise

• Make Testing Easy (35%)

  • Build reusable test fixtures, libraries, and templates that lower the barrier for engineers to write unit and integration tests
  • Design testable interfaces and mock layers for embedded device features
  • Collaborate on architecture decisions to ensure new code is testable by default
  • Provide patterns and examples (pytest, gtest) that engineers and agents can copy and adapt
  • Improve the local development and CI experience so tests are fast and reliable
  • Document testing patterns and best practices, especially for embedded systems

• Strengthen Release Confidence (15%)

  • Validate critical release paths with automated and exploratory testing (device pairing, OTA, mobile app integration)
  • Support mobile app testing (iOS/Android) for key user flows
  • Turn customer-reported issues into new automated test cases, closing gaps in the verification machine so the same bug never ships twice

What We're Looking For

We’d love to speak with you if:

• You have 4–7 years of software engineering experience, with significant time spent on test infrastructure, developer tooling, CI/CD systems, or platform/infrastructure engineering
• You're a strong Python developer (pytest preferred) and comfortable reading/modifying C++ test code (gtest)
• You've owned CI/CD pipelines end to end; not just maintained them, but designed them to be fast, reliable, and trusted
• You think about testability as an architecture problem, not just a coverage metric. You've influenced engineers to refactor code so it can be tested
• You're comfortable in Linux/Unix environments and can debug complex issues across hardware and software boundaries
• You care about developer experience: you notice when something is painful and you build the tool to fix it
• You can work independently, identify the highest-leverage infrastructure gaps, and make the case for fixing them
• You have experience with or interest in how AI agents can be integrated into testing and verification workflows

Bonus Points for

• Experience building or maintaining hardware-in-the-loop test systems, device simulators, or integration test environments for IoT or embedded products
• Experience with device communication protocols (Modbus, serial, gRPC)
• Experience testing firmware OTA updates or device provisioning flows
• Bazel build system experience
• Docker and containerization for test environments
• Mobile test automation (Appium for iOS/Android)
• Web E2E automation (Cypress/Playwright)
• HVAC, home automation, or similar IoT domain experience
• Embedded Linux or Raspberry Pi development

Why This Role Matters

At Quilt, we support live products with real customers depending on us, we have the technical complexity of an established company with the resources of a startup, and AI is making code generation nearly free while verification remains expensive. The engineer in this role will be the single biggest lever for getting us out of that middle. You're not writing features; you're building the foundation that lets every feature ship.

About Quilt

We are a growing team of ambitious people who truly care about the impact of their work. We are on a mission to accelerate a species-level human transition. For over a million years, we've been burning things to stay warm. It's time to move to a better way of living.

Compensation

This is a full-time, hybrid position working out of our Redwood City office. Candidates must be able to commute to the office at least 3 days a week.

We are not able to offer relocation assistance for this role.

The expected base annual salary range for this role is $150,000–$200,000, depending on experience. In addition to base salary, Quilt also offers meaningful equity and top-tier health benefits.