Principal, Software Engineer - Fullstack

Description

The company runs a marketplace where third-party sellers list and sell products to customers on the company's site. The marketplace engineering team builds the core platforms and services that manage the full seller lifecycle, track customer experience, and give sellers insights on assortment, pricing and inventory. The team also works closely with partner platform teams.

This is a principal, hands-on technical leadership and architecture role for the Marketplace Orders and Returns platform, with a focus on platform engineering. You will build scalable, resilient and extensible systems across backend and frontend, and you will lead mainly through influence across teams.

Responsibilities

• Set the technical direction and architecture for the Marketplace Orders and Returns systems
• Design and scale event-driven, microservices-based platforms, including APIs, webhooks and app integrations, plus web front-end applications for marketplace workflows
• Own architecture from backend services through the React/Redux front end so user experiences feel seamless
• Lead platform engineering work that improves developer productivity, scalability and reuse across teams
• Use data and AI-driven insights to make systems smarter and improve decisions and experiences for customers and sellers
• Track emerging technologies and bring modern engineering and platform practices into the ecosystem
• Make cross-team architecture decisions that protect scalability, reliability and performance
• Solve hard distributed-systems problems such as data consistency, resiliency and latency
• Work with product and engineering leaders to turn business needs into scalable technical solutions
• Align multiple teams across Marketplace, Payments, Fulfillment and Seller Platform
• Run design reviews and set engineering best practices for APIs, integrations and front-end applications
• Drive platform modernization and ongoing improvement work
• Mentor senior engineers and raise the technical bar across the organization
• Contribute hands-on to critical systems and architecture initiatives

Requirements

• Deep expertise in distributed systems, microservices and event-driven architectures
• Strong record of building and scaling cloud-native platforms with high availability and performance
• Solid Java back-end skills and working familiarity with React/Redux
• Experience designing and evolving APIs, webhooks and external integrations at scale
• Strong grounding in platform engineering and in building reusable, extensible systems
• Proven ability to drive architecture across teams and shape technical decisions at scale
• Experience using data and AI-driven insights to improve systems and user experiences
• Strong problem solver who can work through complex, ambiguous problems
• Track record of mentoring senior engineers and raising the overall technical bar
• Clear collaboration and communication with engineering and business stakeholders
• Option 1: Bachelor's degree in computer science, computer engineering, computer information systems, software engineering or a related field, plus 5 years of software engineering experience or in a related area
• Option 2: 7 years of software engineering experience or in a related area
• Optional: Master's degree in computer science, computer engineering, computer information systems, software engineering or a related field, plus 3 years of software engineering experience or in a related area
• Optional: Background in inclusive digital experiences, knowledge of WCAG 2.2 AA standards, assistive technologies and digital accessibility, and familiarity with the company's accessibility standards and guidelines

Conditions

Location: 1375 Crossman Ave, Sunnyvale, CA 94089-1114, United States of America

Annual base salary range: $143,000.00 to $286,000.00

The company is committed to a drug-free workplace with a no tolerance policy on illegal drugs and alcohol at work

Benefits

• Performance-based bonuses: annual or quarterly
• Stock may be offered for certain positions
• Health coverage: medical, vision and dental
• Financial benefits: 401(k), stock purchase and company-paid life insurance
• Paid time off: PTO including sick leave, parental leave, family care leave, bereavement, jury duty and voting
• PTO and/or PPTO for vacation, sick leave, holidays or other uses, with the amount based on job classification and length of employment, meeting or exceeding paid sick leave laws where applicable
• Other benefits: short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement
• Live Better U education program, fully paid for tuition, books and fees, covering high school completion through bachelor's degrees, English Language Learning and short-form certificates, for full-time and part-time associates in the company and Sam's Club facilities
• Some benefits have eligibility requirements and may depend on job classification and length of employment, and are subject to change and plan or program terms