Entry Level Backend Developer Python Jobs in Missouri

Position Summary...Our Information Security team works to protect, defend, and reduce risks across applications, platforms, infrastructure, and services to keep our assets and resources secure. We are seeking a Staff Software Engineer with information security expertise to help design and build secure, resilient services and AI-driven workflows for ServiceNow application and modules, supporting enterprise security automation and compliance validations. This role is essential for lowering enterprise risk and boosting engineering productivity.
At Walmart, we prioritize innovation and data security. Our team is dedicated to maintaining a secure operating environment and preserving the trust of our customers, associates, and stakeholders. We combine a range of services and expertise to prevent fraud, detect threats, and manage digital risk and access. Our focus is on mitigating attack risks, securing cloud transformation, and fostering a culture of security and reliability within our team At Walmart, we prioritize innovation and data security. Our team is dedicated to maintaining a secure operating environment and preserving the trust of our customers, associates, and stakeholders. We combine a range of services and expertise to prevent fraud, detect threats, and manage digital risk and access. Our focus is on mitigating attack risks, securing cloud transformation, and fostering a culture of security and reliability within our team.What you'll do...

• Architect, design and operate secure APIs along with frameworks for service-to-service or Agentic communications.
• Architect scalable, highly available backend systems that process and validate security measures and control data.
• Build resilient integrations across security tooling ecosystems (scanners, CI/CD, internal APIs).
• Develop telemetry pipelines that helps preserve audit integrity and traceability.
• Build APIs and aggregate data originating from telemetry signals and sensors, in a scalable backend database
• Write SQL queries or equivalent to ingest, update and retrieve data from the backend.
• Manage and support Agents, MCP servers, APIs, and infrastructure components that form part of our Security controls and Security Data aggregation ecosystems.
• Apply threat modeling and secure data handling principles to build and validate control effectiveness.
• Incorporate AI-driven workflows that include safeguards for secure coding and compliance validation.
• Collaborate with Product Security, Compliance, and Platform teams to automate thousands of security validation tasks.
• Reduce security review cycle times while strengthening control consistency and audit defensibility.

What you'll bring:

• As a Staff software engineer, experience in building scalable, resilient, secure enterprise application using Java or Python using MVC and async frameworks.
• Well versed with SQL (Azure SQL, PostgreSQL), NSQL technologies (Cassandra or MongoDB).
• Working experience in Containerization of applications and services.
• Have expertise in building microservices, REST APIs, resilient and at scale services
• Knowledge of triaging and fixing bugs in a microservice, n tier architecture and in big data platforms is an added plus.
• Knowledge of creating Agents, MCP servers, APIs, and infrastructure components is an added plus.
• Working experience with big data technologies such as Big Query, Kafka, Apache Spark, Elastic Search and Data Streaming is an added plus.
• Ability to grasp and understand the big picture and build customer centric products and services with minimal inputs, business definition and requirements.
• Experience in creating frameworks, components and reusable assets that serves as building blocks for products and services.
• Has an engineering mindset when creating products and solutions – multi region deployments, HA, autoscaling, blue green deployments, secure SDLC for products and services, performance measures at every tier, data security and access control measures.
• Have used CI/CD pipelines for code deployment and container orchestration platforms like Kubernetes.
• Demonstrated ability to learn new programming languages or technologies.
• Awareness about information security domains, specifically application security with static security scanning, Software composition analysis, vulnerabilities, threats, and exploits.
• Good written and verbal communication skills.
• Excellent analytical and problem-solving skills.

You’ll sweep us off our feet if….

• You are an experienced architect and designer of microservices and APIs with an Ntier architecture in a cloud native ecosystem.
• You are an AI builder with expert software engineering skills and have begun creating applications and services using Agentic IDEs like Cursor or Windsurf.
• You have experience in architecting, designing Agents and building MCP servers that support enterprise security workflows, enable agentic communications and to integrate with other enterprise services.
• You specialize in writing agentic validation for security controls presence in platforms, infrastructure, services, applications, and GIT repositories.
• You have developed scalable APIs and data pipelines for gathering and aggregating security control data, using Java or Python.
• You are accustomed to working collaboratively in a matrixed organizational structure.
• You possess strong knowledge of the security domain, including vulnerabilities, security controls, and application security.
• You have an in-depth understanding of service-to-service security and secure architectural patterns.
• You have hands-on experience integrating with various security tools such as SAST, ASPM, and container scanners and have introduced gating measures in CI/CD pipelines to act as security guardrails.
• You are experienced in security solution of AI workflows, Agents in your enterprise ecosystem.

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.
Bentonville, Arkansas US-09050: The annual salary range for this position is $110,000.00 - $220,000.00
Herndon, Virginia US-10710: The annual salary range for this position is $132,000.00 - $264,000.00 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, information technology, engineering, information systems, cybersecurity, or related area and 4years’ experience in software engineering or related area at a technology, retail, or data-driven company.
Option 2: 6 years’ experience in software engineering or related area at a technology, retail, or data-driven company.Preferred Qualifications...

Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.

Certification in Security+, GISF, CISSP, CCSP, or GSEC, Master’s degree in computer science, information technology, engineering, information systems, cybersecurity or related area and 2 years’ experience leading information security or cybersecurity projects, 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 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. This policy applies to all employees and aims to create a safe and productive work environment.