We are hiring an experienced back-end software engineer to help design and build mission-critical systems that support complex, secure environments. This role is ideal for someone who thrives in high-impact work, enjoys solving challenging technical problems, and brings deep expertise in modern back-end architecture and cloud-based development. What You'll Do Serve as a subject matter expert supporting advanced technical efforts Analyze systems and processes to identify improvements and define requirements Develop architecture, functional models, and technical documentation Design and build scalable back-end systems to support new and existing capabilities Develop and enhance RESTful APIs and system integrations Manage and optimize databases and data models Contribute to planning, testing, and implementation of software solutions Lead or support engineering efforts across the full development lifecycle What You'll Bring Active TS/SCI clearance Ability to work onsite in San Antonio, TX up to five days per week Bachelor's degree in a related field Master's degree may substitute for 2 years of experience Experience Requirements: At least 10 years of software development experience using object-oriented and scripting languages, including DevSecOps tools, microservices, and container technologies 5+ years of back-end web design and development 10 years working with relational databases and RESTful API development/integration 5 years of experience with Python and PostgreSQL 5 years using bug tracking tools (e.g., Jira) 5 years testing web-based applications 5 years leading software development programs or projects 3 years of experience with AWS infrastructure, Kubernetes, and Red Hat Linux Technical Stack Experience (5+ years with at least five of the following): PostgreSQL RDS Exodus Python Luna Java Docker OpenJDK Ansible Packer Maven Kubernetes Red Hat Additional Capabilities: Experience conducting and documenting system testing to validate performance and compliance Hands-on experience developing in cloud environments Nice to Have Experience integrating data across classified and unclassified environments Background in DoD software development environments Familiarity with Agile and Test-Driven Development (TDD) Experience working within DevSecOps pipelines in secure environments 5 years of CI/CD development experience Experience with UX design tools (e.g., Sketch, InVision) Experience preparing data for machine learning or AI applications