Developer Infrastructure Engineer

Sunday; Redwood City (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

Sunday in Redwood City is seeking a Developer Infrastructure Engineer focused on building a reliable pipeline for software delivery to personal robots. You'll refine the build system and ensure smooth deployments and updates.

The ideal candidate has extensive experience in software engineering, particularly in build infrastructures and CI/CD systems, and programming knowledge in languages like C++ and Python. Join us at the forefront of robotics innovation.

Qualifications

• 5+ years of software engineering experience, focusing on build infrastructure and delivery.
• Experience with modern build systems like Bazel, Buck, or CMake.
• Strong background in CI/CD practices and pipelines.
• Hands-on experience with Docker and image building.
• Experience deploying software in production environments with version control.
• Knowledge of languages: C++, Rust or Go, and Python.
• Familiarity with Linux as a deployment target.

Responsibilities

• Own and evolve the build system for efficiency.
• Design and operate CI/CD pipelines for consistent releases.
• Manage artifact packaging and versioning for production.
• Oversee the OTA update system for secure software delivery.
• Enhance developer experience for quick deployment of ideas.

Skills

Software engineering experience

Build infrastructure knowledge

CI/CD experience

Container knowledge

Production software deployment

Systems language proficiency

Scripting language proficiency

Linux familiarity

Tools

Bazel

Docker

C++

Rust

Go

Python

Job description

Join Us in Building the Future of Home Robotics

At Sunday, we're developing personal robots to reclaim the hours lost to repetitive tasks. We're focused on an ambitious goal to make generalized robots broadly accessible, enabling households to take back quality time.

We have spent the last 18 months building a talented team, securing capital, and validating our technology. We are now seeking passionate individuals to join us in the next phase of our growth. If you are ready to apply your skills to the forefront of robotics innovation, we’d love to hear from you.

What to Expect

The ML & Robotics Infra team builds the foundational systems that every part of our robot perception, ML, controls and behavior runs on, and the developer infrastructure that lets us build, ship, and update that software quickly and safely on every robot in the fleet.

As a Developer Infrastructure Engineer, you’ll own how code and model artifacts get built and delivered to the robot. From the moment a developer hits commit to the moment the new binary, middleware, or model is running on a robot in someone’s home. You’ll build the systems that let our engineers ship quickly and confidently: a fast and reliable build, a CI/CD pipeline they trust, signed and reproducible artifacts and an OTA path that gets those artifacts safely onto the fleet. You’ll work alongside teammates who own the runtime substrate and the GPU and accelerated compute layer, they build what runs on the robot; you build how it gets there.

What You’ll Do

• Build system: Own and evolve our build system to keep builds fast, hermetic, and reliable as the codebase and team grow

• CI/CD: Design and operate pre-merge and post-merge pipelines that catch regressions early and produce trustworthy release artifacts

• Artifact pipeline: Build the packaging, versioning, and signing pipeline for the binaries that ship to the robot i.e. system software, application code, and exported/compiled ML models

• Dev containers & dependency management: Define and maintain consistent development containers and package/dependency management across the team, keeping the dev environment in parity with the base Linux image that runs on the robot

• Over-the-air updates: Build and operate the OTA system that delivers new software to robots safely — staged rollouts, canarying, rollback, and verification

• Model delivery: Treat compiled/exported models as first-class deployable artifacts, with versioning, validation, and the same delivery guarantees as the rest of the stack

• Developer experience: Reduce the time between “I have an idea” and “it’s running on a robot” for local dev workflows, fast feedback loops, and clear failure signals when things break

What You’ll Bring

• 5+ years of software engineering experience, with significant time spent on build infrastructure, developer tooling, CI/CD, or software delivery
• Hands‑on experience with a modern build system (Bazel, Buck, CMake at scale, or similar) in a large multi-language codebase
• Strong CI/CD background — designing pipelines, managing test infrastructure, and improving signal‑to‑noise as systems grow
• Working knowledge of containers (Docker/OCI) and the practical tradeoffs around image building, layering, and runtime
• Experience deploying software to production environments — whether cloud, embedded devices, fleets, or similar — with a real understanding of versioning, rollback, and safe rollout
• Comfort working in a systems language (C++, Rust, or Go) and a scripting language (Python) — you’ll read and write both
• Working comfort on Linux as a target deployment platform

Nice to Have

• Direct experience with Bazel in a polyglot codebase (C++, Python, ML model toolchains)
• Experience building or operating OTA update systems for embedded devices, vehicles, robots, or similar fleets
• Experience packaging and deploying ML models — model registries, versioning, compiled/exported artifact pipelines
• Familiarity with artifact signing, supply chain security, or reproducible builds
• Background working alongside runtime, robotics or ML teams

At Sunday Robotics, we’re building technology shaped by real people — curious, creative, and diverse. We’re proud to be an equal opportunity employer and consider all qualified applicants regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Even if you don’t meet every single requirement, we encourage you to apply. Studies show that women and underrepresented groups often hold back unless they meet 100% of the criteria — we don’t want that to be the reason we miss out on great talent.