Senior Mainframe Software Engineer Jobs in Arkansas

Position Summary...As a Senior Software Engineer on Walmart’s US Omni Tech team, you will lead the delivery of high‑quality software and ML‑enabled features by owning design, development, testing, and CI/CD operations across services, APIs, and UI components. You apply strong technical judgment, integrate AI/ML capabilities, and ensure scalable, secure system architecture. You collaborate across teams to translate complex problems into measurable solutions, drive engineering excellence through continuous improvement, mentor peers, and model integrity, adaptability, and a customer‑first mindset to support reliable, innovative, and impactful technology outcomes. What you'll do...About the Team US Omni Tech builds platforms that power one of the world’s largest real estate, energy, IoT, and sustainability ecosystems. Our team connects millions of devices, optimizes building performance, accelerates construction and remodel workflows, and enables next‑generation energy and EV charging at scale. What We Build

• IoT device management platforms for HVAC, lighting, sensors, and energy optimization.
• Walmart’s Digital Twin ecosystem for simulation and scenario planning.
• Real Estate planning and construction platforms for efficient store builds and remodels.
• Nationwide EV charging network platforms for seamless customer experience.
• Renewable energy management systems for solar, storage, and emerging clean‑energy tech.

What You’ll Do

• Deliver scalable platform capabilities across infrastructure, tooling, developer experience, and ML frameworks.
• Lead full SDLC: design, coding, testing, CI/CD deployment, monitoring, and maintenance.
• Architect cloud‑native, resilient systems using microservices and containerization.
• Conduct design reviews and ensure architectural alignment.
• Build AI‑driven applications with integrated ML components.
• Mentor engineers and drive engineering excellence through documentation and standards.
• Collaborate with cross‑functional teams to define requirements, success metrics, and outcomes.

What You’ll Bring

• Expertise in cloud‑native architecture: microservices, containers, orchestration, automation.
• Strong skills in software design patterns, API design, and platform engineering.
• Experience with full SDLC, CI/CD, observability, and operational excellence.
• Ability to integrate AI/ML components using Python, JavaScript, C++, Java.
• Strong debugging, optimization, and data‑driven decision‑making capabilities.
• Effective mentorship and technical leadership.
• Deep knowledge of distributed systems, HPC, and fault‑tolerant design.
• Strong database internals knowledge for SQL/NoSQL tuning and storage design.
• Expertise in security‑first engineering and threat modeling.
• Experience with event‑driven architectures (Kafka, queues) and async processing.
• Proficiency with Cloud infrastructure and cloud automation.

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. 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. For information about PTO, see https://one.walmart.com/notices. 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.
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.
For information about benefits and eligibility, see One.Walmart.
The annual salary range for this position is $90,000.00 - $180,000.00 Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include :
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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 3 years’ experience in software engineering or related area.
Option 2: 5 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 1 year's 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... 2501 Se J St, Ste A, Bentonville, AR 72716-3724, 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.