Top Senior Software Engineer Jobs in St. Louis, MO

Build enterprise-grade authentication, authorization, and identity features across the full stack. Design and implement RBAC, provisioning (SCIM), SSO/OAuth integrations, secure public APIs, and admin workflows for auditing and compliance. Own end-to-end product changes, collaborate on architecture, and mentor engineers to deliver scalable, reliable systems for enterprise customers.

As a Backend Engineer, you will design and implement core infrastructure for Vannevar's platform, ensuring standards for data processing, security compliance, and performance. You will collaborate with various teams to enhance shared infrastructure and lead technical initiatives.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

The Back-End Software Engineer at Boeing will lead the development of prototypes and production-level web applications, focusing on APIs, data processing, and system architecture while mentoring team members.

The Software Engineer Sr leads UI design and development, optimizing scalable applications, mentoring staff, and ensuring compliance with standards while collaborating with teams.

Develop innovative infrared management and mission planning software, manage the software development lifecycle, lead junior engineers, and adapt to new technologies.

Develop and maintain Vehicle Management System software, ensuring flight and subsystem control, while providing technical leadership and support throughout the software lifecycle.

Lead the design and implementation of scalable monetization systems while mentoring engineers and driving technical strategy for revenue growth.

As a Software Engineer Principal (UI), you'll design and code software solutions, provide technical guidance, and lead problem-solving efforts to meet complex business needs.

As a Software Engineer/Senior Software Engineer, you'll design, develop, and maintain high-quality software solutions, focusing on API development and technical excellence while collaborating with teams.

As a Senior Full-Stack and Platform Software Engineer at mabl, you will develop features for an AI-powered test automation platform, enhancing user experiences, designing APIs, and optimizing data pipelines while collaborating with cross-functional teams.

Manage clusters, develop with Golang, provision infrastructure with Terraform, and enhance performance of the platform handling untrusted code.

As a Principal Mobile Software Engineer, you'll lead mobile platform development, scale React Native architecture, mentor engineers, and collaborate across teams to build impactful features.

The Software Engineer Principal leads the design and development of large-scale systems, mentoring teams and driving architecture decisions while ensuring compliance with best practices and security standards.

Seeking a Software Engineer/Senior Software Engineer to design, develop, and deliver quality backend services and APIs using Go, with emphasis on Kubernetes and cloud services.

The Software Engineer will engage in the design, development, testing, and maintenance of software for the Tomahawk program, ensuring compliance with regulations and addressing user inquiries.

Develop and enhance features within the Subscriptions Backend, ensuring system stability and observability, and leading architectural decisions.

Design and implement CIAM backend services for authentication and authorization. Integrate identity systems, manage secure flows, and automate infrastructure.

As a Billing & Analytics Software Engineer, you'll design and maintain the billing pipeline, integrate billing systems, and develop customer-facing analytics dashboards to support revenue recognition and operational observability.

Design, maintain, and evolve core backend systems and APIs. Collaborate with product teams to create durable and reusable systems while enhancing performance and security.

The role involves developing the BLE implementation on mobile products, collaborating with cross-functional teams, mentoring junior developers, and ensuring high-quality code delivery in a fast-paced environment.

Lead engineering team to design, analyze, test, and certify aircraft software per FAA standards (DO-178B/C). Act as FAA liaison, oversee technical documentation for certification, mentor staff, resolve complex engineering issues, and ensure on-time delivery of safety-critical certification milestones.

Lead a DevSecOps team to create secure development toolchains, implementing modern solutions such as CI/CD pipelines and mentoring engineers.

As a Staff UI Software Engineer, you will lead the design and architecture of the Basis application, mentoring others and driving large-scale projects while enhancing UI performance and quality.

The role involves leading projects as a full-stack engineer, focusing on SaaS products, enhancing user experiences, and building accessible software.