Senior Software Engineer, Backend Platform

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Instacart’s Backend Platform team builds the shared Go-based foundation that powers services across our marketplace, advertising, partner, and fulfillment domains. We create the frameworks, libraries, tooling, and standards that help product teams ship reliable, secure, and high-performance services at scale. As a Senior Software Engineer on Backend Platform, you will design and deliver the next-generation platform that enables our future service architecture in Go.You’ll partner closely with SRE, Security, Infra, and product engineering teams to define best practices, accelerate developer productivity, and raise the reliability and performance bar across the company. This role is ideal for engineers who thrive in fast-paced, evolving environments, enjoy tackling ambiguous technical problems, and take pride in building platforms that dozens of teams rely on. You’ll have meaningful ownership, the ability to influence engineering standards company-wide, and the opportunity to see your work adopted at scale. This role can be remote across the U.S. and Canada. About the Job You will collaborate with platform engineers and SREs to deliver high-leverage capabilities that make building, operating, and scaling Go services simpler and safer. Expect a hands-on, iterative environment where you’ll balance long-term platform strategy with near-term delivery for high-impact use cases. Design, build, and evolve Go platform components (frameworks, libraries, service templates, and tooling) that are adopted across many product teams. Define and socialize engineering standards for APIs, RPC/gRPC, configuration, observability, security, and resiliency to improve service quality and consistency. Improve developer productivity through better build/test pipelines, reproducible local dev, CI/CD workflows, and automation that reduces toil. Advance reliability and performance by enabling robust telemetry (OpenTelemetry), profiling, load testing, and capacity planning baked into the platform. Lead migrations and modernization efforts (e.g., Go runtime upgrades, service mesh adoption, framework consolidation) with clear rollout and deprecation plans. Collaborate with SRE to enhance runtime operations (service discovery, traffic management, canary/blue-green releases, incident response) for Go services. Provide technical leadership, documentation, and enablement for teams adopting platform capabilities; participate in on-call rotations for platform-owned services. About You Minimum Qualifications 5+ years of experience in backend software engineering building distributed systems or platforms. 3+ years of hands-on production experience with Go (designing, coding, testing, and operating Go services or libraries). Proficiency with service-oriented architectures using gRPC and/or REST, including API design, versioning, and backward compatibility. E