Principal, Software Engineer (Fullstack)

Job description

**Position Summary...**

**What you'll do...**

We are seeking an experienced **Principal Software Engineer** with deep expertise in both backend and frontend technologies, and a strong understanding in Trust and Safety domain.

This hands-on role requires exceptional coding skills, architectural vision, and the ability to mentor engineers.

You will define and maintain technical architecture, Drive seller trust and Safety roadmap for Walmart Global Tech.

**About Team**

Join the innovative **Walmart Marketplace team** focused on Seller trust and Safety were creativity and technological innovation drive success.

We specialize in enhancing Seller trust and risk management in ensuring a seamless shopping experience for all consumers on Walmart.com.

Our tech stack includes Java for backend services and science models that are focused on fraud detection and safety

****Immigration sponsorship support is not available for this position****

**What you'll do**

• Guide and mentor, a team of engineers, conducting code reviews and leading design discussions to ensure engineering best practices.

• Act as a technical authority, providing direction and expertise in backend, frontend, and agentic technologies.

• Drive the adoption of coding standards, design patterns, development best practices, and agentic frameworks.

**Architectural Leadership:**

• Lead the creation and maintenance of our technical architecture, aligning it with business goals, scalability, and agentic adoption.

• Architect complex software systems (data/backend), ensuring performance, security, and scalability needs are met.

**Software Craftsmanship:**

• Consistently produce high-quality software with a focus on unit testing, regular code reviews, and continuous integration.

• Uphold high standards in quality and operational excellence.

**Technical Documentation:**

• Develop comprehensive technical documentation and presentations to communicate architectural decisions and agentic design options.

• Ensure documentation aligns with project scopes, milestones, and deliverables.

**Engineering Advocacy:**

• Promote and enforce technical standards across the organization to achieve concrete outcomes and drive engineering excellence.

• Foster a culture of learning and innovation through hands-on technical guidance and mentorship.

**Project Leadership:**

• Lead the discovery phase of major projects, ensuring the design aligns with business goals and technical requirements.

• Collaborate with cross-functional teams to define project scopes and milestones.

**Cross-functional Collaboration:**

• Collaborate closely with Product Management, UX/UI, Quality Assurance, and DevOps teams.

• Communicate complex technical concepts effectively to both technical and non-technical stakeholders.

**Innovation and Research:**

• Stay at the forefront of technological advancements, especially in agentic frameworks and Gen AI, conducting research to identify emerging tools and methodologies.

**What you’ll Bring**

+ Deep domain expertise in building and **scaling Trust and Safety systems either payment or e-commerce domain**
+ **Highly ambiguous problems of trust and safety by working with multiple business products and technology stakeholders.**
+ **Experience with large-scale, distributed data platforms** capable of supporting **high-throughput, low-latency transactions** across fast-access data stores, graph databases, and big query stores.
+ Strong experience with **real-time data streaming frameworks** (e.g., Kafka, Flink, Spark Streaming) to enable anomaly detection and event-driven architectures at scale.
+ Proven ability to design and scale **decisioning and ML inference platforms** to handle **high transaction volumes** with **sub-second latency** while maintaining accuracy and reliability.
+ Expertise in at least one modern programming language such as Java and Scala, Go and familiarity with **cloud-native platforms** (GCP BigQuery, Azure)
+ Familiarity with **risk modeling, fraud detection, anomaly detection, or decisioning systems** is highly desirable.
+ Ability to collaborate with cross-functional stakeholders (risk, data science, product, compliance) and translate business requirements into technical design.
+ Proven track record of **technical leadership** , setting long-term architectural vision, mentoring engineers, and influencing strategy across multiple teams
+ Experience with **e-commerce and Marketplace is preferred**

_The above information has been designed to indicate the general nature and level of work performed in the role.

It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications required of employees assigned to this job.

The full Job Description can be made available as part of the hiring process_

**About Walmart Global Tech:**
Imagine working in an environment where one line of code can make life easier for hundreds of millions of people.

Thats what we do at Walmart Global Tech.

Were a team of software engineers, data scientists, cybersecurity experts and service professionals within the world’s leading retailer who make an epic impact and are at the forefront of the next retail disruption.

People are why we innovate, and people power our innovations.

Weare people-led and tech-empowered.

We train our team in the skillsets of the future and bring in experts like you to help us grow.

We have roles for those chasing their first opportunity as well as those looking for the opportunity that will define their career.

Here, you can kickstart a great career in tech, gain new skills and experience for virtually every industry, or leverage your expertise to innovate at scale, impact millions and reimagine the future of retail.

**Benefits and Perks:**

Beyond competitive pay, you can receive incentive awards for your performance.

Other great benefits include a 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, flexible working hours, and more.

We are reimagining the tech workplace by making a permanent transition to virtual work for most of our team.

Of course, being together in person is an important part of our culture and shared success.

Well collaborate in person at a regular cadence and with purpose.

**Living the Walmart Value:**

Focus on our Associates / Belonging - Identifies, attracts, and retains top talent; builds a high-performing team; embraces a culture of belonging.

**Equal Opportunity Employer:**

Walmart, Inc., is an Equal Opportunity Employer By Choice.

We believe we are best equipped to help our associates, customers and the communities we serve live better when we really know them.

That means understanding, respecting and valuing unique styles, experiences, identities, ideas and opinions while being inclusive of all people.

At 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.
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You 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.
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For information about PTO, see https://one.walmart.com/notices .

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Live 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.
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Eligibility 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.
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For information about benefits and eligibility, see One.Walmart (https://bit.ly/3iOOb1J) .

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The annual salary range for this position is $143,000.00-$286,000.00
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Additional compensation includes annual or quarterly performance bonuses.
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Additional compensation for certain positions may also include:
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- Stock
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**Minimum Qualifications...**

_Outlined below are the required minimum qualifications for this position.

If none are listed, there are no minimum qualifications._

Option 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., Option 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.

**Preferred Qualifications...**

_Outlined below are the optional preferred qualifications for this position.

If none are listed, there are no preferred qualifications._

Master’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...**

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

Walmart 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.

This policy applies to all employees and aims to create a safe and productive work environment.
Walmart, Inc.

is an Equal Opportunity Employer- By Choice.

We believe we are best equipped to help our associates, customers, and the communities we serve live better when we really know them.

That means understanding, respecting, and valuing diversity- unique styles, experiences, identities, abilities, ideas and opinions- while being inclusive of all people.

Required Skill Profession

Other General