As a Senior Software Engineer, you will focus on executing and delivering high‑impact platform capabilities across Instacart’s Enterprise Fulfillment Platform APIs and services.
You will work on complex areas such as API design, fulfillment orchestration, retailer and partner integrations, and high‑throughput distributed systems.
You will contribute to building the next generation of Instacart’s fulfillment technology, ensuring reliability, scalability, and partner success.
Provide technical leadership, mentoring teammates and raising engineering quality without formal management responsibilities.
Build core platform components that power Connect API Fulfillment and the 3rd‑Party Fulfillment Platform.
Deliver reliable, scalable APIs and orchestration systems that support complex, high‑volume fulfillment workflows.
Drive execution of major platform initiatives, from architecture to implementation to launch.
Collaborate with product and cross‑functional partners when needed to align on requirements and integration needs.
Improve platform reliability, throughput, and developer experience.
Contribute to the design of next‑generation fulfillment orchestration and partner‑facing APIs and tooling.
Mentor engineers through technical guidance, code reviews, and thought leadership.

Requirements

Bachelor’s or Master’s degree in Computer Science (or related field), or equivalent experience.
5+ years of backend development experience, with a strong record of project delivery.
Experience drafting clear technical vision and design documents.
Strong proficiency in owning and maintaining production services at high quality.
Ability to rapidly deliver high‑quality code supporting high‑traffic systems.
Experience working with product teams or customers in a collaborative environment.
Proven ability to influence and mentor a team as a senior IC.
Experience designing or scaling external APIs (preferred).
Experience with distributed systems or orchestration‑style architectures (preferred).
Experience integrating with external partners or 3rd‑party systems (preferred).
Experience working across teams to develop platform‑level solutions (preferred).

Benefits

Instacart provides highly market-competitive compensation and benefits in each location where our employees work.
Eligible for a new hire equity grant as well as annual refresh grants.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

API designfulfillment orchestrationdistributed systemsbackend developmenthigh-throughput systemshigh-quality codetechnical visiondesign documentsproduction servicesplatform components

Soft Skills

technical leadershipmentoringcollaborationinfluencecommunicationproblem-solvingteamworkthought leadershipcode reviewsproject delivery

Certifications

Bachelor’s degree in Computer ScienceMaster’s degree in Computer Science