Senior Software Engineer Startup Jobs in Missouri

Position Summary... What you'll do...Role Summary The (USA) Senior Software Engineer plays a key technical leadership role in designing, developing, and evolving scalable, resilient software solutions that support critical business capabilities. This role partners closely with Product, Architecture, and cross-functional engineering teams to define technical direction, drive solution design, and deliver complex initiatives from conception through production. The engineer owns services and platform components end-to-end, proactively identifying technical risks, improving system reliability, performance, and observability, and leading root cause analysis for production issues. In addition to delivering high-quality, secure, and maintainable software, the Senior Software Engineer mentors other engineers, establishes engineering best practices, drives architectural improvements, and champions automation, testing, and operational excellence. This role influences technical decisions across multiple teams while ensuring solutions remain scalable, extensible, and aligned with long-term business and platform strategy. About the team:   The F1 team develops advanced tools for sales forecasting and data pipelines supporting Walmart US operations with timely sales data. Collaborating closely with product and project management, the team designs and delivers scalable, high-quality solutions. Emphasizing continuous improvement and technical excellence, F1 applies iterative development, platform design, API creation, and debugging expertise. The team ensures reliable, efficient software delivery through strong documentation and testing practices, enabling seamless performance and timely completion of critical business projects that drive operational success.
What you'll do:

• Collaborate with product, project, business, and user experience teams to define high-level design and technical solutions for projects.
• Develop, write, and test code ensuring alignment with business and technical requirements, including security and scalability standards.
• Troubleshoot and resolve production and business issues through root cause analysis and coordinated action plans.
• Lead and mentor small engineering teams, providing guidance on documentation, timelines, and technical approaches.
• Create and execute test cases, perform defect analysis, and support continuous integration and delivery processes.
• Monitor application performance, implement maintenance activities, and evaluate change requests for feasibility.

What you'll bring:

• Proven experience in software design, development, and debugging using object-oriented programming languages such as Python, Java
• Strong technical acumen with expertise in API design, platform development, and component services.
• Demonstrated ability to manage complex projects, including requirement analysis, solution design, and delivery within Agile frameworks.
• Proficiency in continuous integration and continuous delivery (CI/CD) processes and automation scripting.
• Skilled in troubleshooting, root cause analysis, and implementing sustainable solutions to production issues.
• Experience collaborating with cross-functional teams and providing technical guidance to peers.
• Commitment to quality, security standards, and documentation-based coding practices.

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... 805 Se Moberly Ln., Bentonville, AR 72712, 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.