{"id":3741725,"url":"https://alion.io/job/walmart-principal-software-engineer-fullstack","title":"Principal, Software Engineer - Fullstack","company":{"id":236,"name":"Walmart","domain":"walmart.com","url":"https://alion.io/company/walmart","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":100,"open_postings":335,"ghost_share":0,"stale_share":0.113,"repost_share":0.003,"time_to_fill_p50_days":5,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Java","optional":false},{"name":"Platform Engineering","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-11-02T00:00:00Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-05T00:43:00Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Position Summary...\nWhat you'll do...\nJob Description\nAs a Principal Engineer- fullstack, you will act as a hands-on technical leader and architect for the Marketplace Orders and Returns platform. This role requires deep technical expertise and strong engineering judgment, with a focus on platform engineering to build scalable, resilient, and extensible systems across both backend and frontend layers.\nYou will drive architectural excellence, evaluate and adopt modern technologies, and solve complex problems across a distributed, high-scale environment while leading through influence across teams.\nAbout the Team:\nMarketplace Engineering team is at the forefront of building core platforms and services to enable Walmart to deliver vast selection at competitive prices and with best-in-class customer experience by enabling third-party sellers to the marketplace platform, sell and manage their products to our customers on walmart.com . We do this by managing the entire seller lifecycle, monitoring customer experience, and deliver high- value insights to our sellers to help them plan their assortment, price, inventory. The team also actively collaborates with partner platform teams to ensure we continue to deliver the best experience to our sellers and our customers. \nWhat You’ll do:\nDrive the technical vision and architecture for Marketplace Orders and Returns systems \nDesign and scale event-driven, microservices-based platforms, including APIs, webhooks, and app integrations, along with web front-end applications for Marketplace workflows \nLead end-to-end architecture across backend services and modern web front-end (React/Redux) to deliver seamless user experiences \nLead platform engineering initiatives to improve developer productivity, system scalability, and reusability across teams \nLeverage data and AI-driven insights to enhance system intelligence, decision-making, and customer/seller experiences \nStay current with emerging technologies and apply modern engineering and platform practices to evolve the ecosystem \nLead cross-team architectural decisions to ensure scalability, reliability, and performance \nSolve complex challenges in distributed systems, including data consistency, resiliency, and latency \nPartner with Product and Engineering leaders to translate business needs into scalable technical solutions\nInfluence and align multiple teams across Marketplace, Payments, Fulfillment, and Seller Platform \nLead design reviews and establish engineering best practices for APIs, integrations, and front-end applications \nDrive platform modernization and continuous improvement initiatives \nMentor senior engineers and raise the technical bar across the organization \nLead by example through hands-on technical contributions to critical systems and architectural initiatives\nWhat you’ll bring:\nDeep expertise in distributed systems, microservices, and event-driven architectures\nStrong experience building and scaling cloud-native platforms with high availability and performance \nProficiency in backend technologies (Java) and familiarity with modern web frameworks (React/Redux)\nExperience designing and evolving APIs, webhooks, and external integrations at scale \nStrong foundation in platform engineering and building reusable, extensible systems \nProven ability to drive architecture across teams and influence technical decisions at scale \nExperience leveraging data and AI-driven insights to improve systems and user experiences \nStrong problem-solving skills with the ability to navigate complex, ambiguous challenges\nTrack record of mentoring senior engineers and raising the overall technical bar \nExcellent collaboration and communication skills across engineering and business stakeholders\nAt Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more.\nYou will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable.\nFor information about PTO, see https://one.walmart.com/notices.\nLive Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart.\nEligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms.\nFor information about benefits and eligibility, see One.Walmart.\nThe annual salary range for this position is $143,000.00 - $286,000.00\nAdditional compensation includes annual or quarterly performance bonuses.\nAdditional compensation for certain positions may also include :\n- Stock\nㅤ\nㅤ\nㅤ\nㅤ\n\nMinimum Qualifications...\nOutlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.\nOption 1: Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 5 years’ experience in software engineering or related area.Option 2: 7 years’ experience in software engineering or related area.\nPreferred Qualifications...\nOutlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.\nMaster’s degree in computer science, computer engineering, computer information systems, software engineering, or related area and 3 years' experience in software engineering or related area., We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.Primary Location...\n1375 Crossman Ave, Sunnyvale, CA 94089-1114, United States of AmericaWalmart and its subsidiaries are committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. 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