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About the Role

As a Senior Software Engineer on Code Scalability, you will solve the engineering problems behind building software at DoorDash’s scale. Your job is to make work efficient, predictable, and easy to investigate when something goes wrong. Projects span Bazel configuration and tooling, Buildkite orchestration, build execution and caching, and the services that support them. You will identify where improvements matter most, make the technical decisions, and work with teams across DoorDash to put those changes into practice. The impact of this role extends to every team that depends on our platform. Shorter queues give engineers more time to iterate, dependable pipelines prevent interruptions, and useful diagnostics help them get back to their work. You will measure progress through those outcomes, alongside the cost and maintainability of the infrastructure you own.

Responsibilities

Evolve build and CI workflows for large monorepos, keeping feedback fast and changes manageable as dependencies, code volume, and the number of contributing teams grow.
Develop Bazel rules, toolchains, and integrations that keep builds reproducible and make shared build infrastructure easier for teams to adopt across large monorepos.
Improve Buildkite pipeline throughput and reliability by reducing queue times, addressing build bottlenecks, and making better use of CI compute capacity.
Reduce redundant build work through dependency analysis, incremental builds, caching, and parallel execution, balancing developer feedback speed with infrastructure cost.
Build developer tools that explain build failures and help engineers reproduce CI behavior locally, making troubleshooting faster and reducing support overhead.
Rethink what a build and CI platform can do with AI: move beyond reporting failures toward intelligent diagnosis, PR triage, automated recovery, and guidance that helps developers move forward.
Instrument and operate build and CI infrastructure. Use metrics and developer feedback to track latency, reliability, and resource usage, then address recurring infrastructure problems.
Lead platform improvements from design through rollout, partner with engineering teams on migrations, and mentor teammates through technical decisions and code reviews.

Requirements

5+ years of software engineering experience, including building developer infrastructure, build systems, or CI platforms.
Experience with build or CI systems at scale and can reason about dependencies, incremental builds, caching, and distributed execution.
Led technical projects across teams, made practical design tradeoffs, and carried changes through rollout and operational ownership.
Approach internal platforms as products: listen to developers, make workflows easier to adopt, and judge success by the problems you solve for them.
Investigate performance and reliability problems across multiple components, use evidence to find the cause, and choose solutions that stay understandable as the system grows.
Improve how a team works through mentorship, clear communication, and automation that removes repetitive work.

Skills

Go
Java
Kotlin
Python
Debugging
Software design
Bazel
Buildkite
Large monorepos

Location

United States
Illinois
Colorado
San Francisco
Los Angeles
New York City

Work Type

Remote
Onsite

Experience Level

Senior

Salary/Compensations

$159,800—$235,000 USD

Benefits

401(k) plan with employer matching
16 weeks of paid parental leave
Wellness benefits
Commuter benefits match
Paid time off
Paid sick leave
Medical benefits
Dental benefits
Vision benefits
11 paid holidays
Disability insurance
Basic life insurance
Family-forming assistance
Mental health program
Flexible paid time off/vacation (for salaried roles)
80 hours of paid sick time per year (for salaried roles)

About the Company

At DoorDash, our mission to empower local economies shapes how our team members move quickly, learn, and reiterate in order to make impactful decisions that display empathy for our range of users—from Dashers to merchant partners to consumers.
We are a technology and logistics company that started by enabling door-to-door delivery, and we are looking for team members who can help us go from a company that is known as the place you order food to a company that people turn to for any and all goods.
DoorDash is growing rapidly and changing constantly, which gives our team members the opportunity to share their unique perspectives, solve new challenges, and own their careers.
We're committed to supporting employees’ happiness, healthiness, and overall well-being by providing comprehensive benefits and perks including premium healthcare, wellness expense reimbursement, paid parental leave and more.

Equal Opportunity

We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.
In keeping with our beliefs and goals, no employee or applicant will face discrimination or harassment based on: race, color, ancestry, national origin, religion, age, gender, marital/domestic partner status, sexual orientation, gender identity or expression, disability status, or veteran status.
Above and beyond discrimination and harassment based on “protected categories,” we also strive to prevent other subtler forms of inappropriate behavior (i.e., stereotyping) from ever gaining a foothold in our office.
Whether blatant or hidden, barriers to success have no place at DoorDash.
We value a diverse workforce – people who identify as women, non-binary or gender non-conforming, LGBTQIA+, American Indian or Native Alaskan, Black or African American, Hispanic or Latinx, Native Hawaiian or Other Pacific Islander, differently-abled, caretakers and parents, and veterans are strongly encouraged to apply.
Pursuant to the San Francisco Fair Chance Ordinance, Los Angeles Fair Chance Initiative for Hiring Ordinance, and any other state or local hiring regulations, we will consider for employment any qualified applicant, including those with arrest and conviction records, in a manner consistent with the applicable regulation.
If you need any accommodations, please inform your recruiting contact upon initial connection.