Senior Software Engineer II, Page Builder (Retailer Platform)
Role summary
Instacart's Retailer Platform is seeking a Senior Software Engineer to join the Page Builder team. This role will focus on high-impact platform initiatives, including architecting and driving the extraction of the Content Management Domain (CMD) from a Ruby monolith into a Go service. You will design proto-first API contracts, build low-latency, reliable services with clear SLOs, and shape a new composable content architecture. The position involves collaborating with various teams to evolve CMD into a dependable platform and integrating AI capabilities for content creation and management. The ideal candidate has 5+ years of backend engineering experience, a proven track record in large-scale technical projects, and experience mentoring engineers. This is a remote role open to candidates in Canada.
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
The Page Builder team is part of Instacart’s Retailer Platform organization within Core Experience Engineering. We own the content infrastructure that powers every consumer-facing page at Instacart—from the storefront homepage a shopper lands on, to the digital flyer they browse, the loyalty rewards they redeem, and the seasonal campaigns that drive purchases. Our systems operate at meaningful scale: the Content Management Domain (CMD) stores, resolves, and renders 150K+ active placements across 125+ format types and serves approximately 7 million placement fetches per day at roughly 200 RPS for 100+ retail partners.
We’re looking for a Senior Software Engineer to lead high-impact platform initiatives that accelerate every team building on Instacart’s content layer. You will architect and drive the extraction of CMD from a Ruby monolith into a dedicated Go service, design proto-first API contracts used by many partner teams, and deliver low-latency, highly reliable services with clear SLOs. You’ll also shape a new composable content architecture that replaces 125+ hardcoded placement types with a single extensible type built on React components and Liquid templates—dramatically speeding up time-to-value for enterprise retailers and internal teams.
This role is a force multiplier across Instacart. You’ll collaborate closely with Shopping/URSA, Feeds, Growth, Loyalty, and Ads to evolve CMD into a dependable, well-documented platform. You’ll help define our AI-native future by exposing Page Builder capabilities as MCP-compatible endpoints so AI agents can create, preview, QA, and publish pages end-to-end. If you thrive in fast-paced, high-ownership environments and enjoy rolling up your sleeves to solve complex, high-scale platform problems, you’ll feel right at home here. This role is open to candidates based in Canada (remote).
About the Job
About You
Minimum Qualifications
Preferred Qualifications
#LI-Remote
Instacart provides highly market-competitive compensation and benefits in each location where our employees work. This role is remote and the base pay range for a successful candidate is dependent on their permanent work location. Please review our Flex First remote work policy here. Currently, we are only hiring in the following provinces: Ontario, Alberta, British Columbia, and Nova Scotia.
Offers may vary based on many factors, such as candidate experience and skills required for the role. Additionally, this role is eligible for a new hire equity grant as well as annual refresh grants. Please read more about our benefits offerings here.
For Canadian based candidates, the base pay ranges for a successful candidate are listed below.
Sample Instacart interview questions
- 1
Design a system for real-time sentiment analysis of social media posts.
system designmedium - 2
How would you design a global search for products (frontend)?
system designdifficult - 3
Develop a secure distributed system for secrets storage and access.
system designmedium - 4
Develop a distributed data versioning management system.
system designmedium - 5
Design a distributed caching layer for high performance.
system designmedium
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