Senior Software Engineer II, Enterprise Fulfillment

Instacart is transforming the grocery industry by providing essential services for grocery delivery. The Senior Software Engineer will focus on executing high-impact platform capabilities across the Enterprise Fulfillment Platform, ensuring reliability and scalability while mentoring teammates.

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
• Experience with distributed systems or orchestration‑style architectures
• Experience integrating with external partners or 3rd‑party systems
• Experience working across teams to develop platform‑level solutions
• Track record of generating innovative, forward‑looking technical ideas