Top Senior Software Engineer Jobs in St. Louis, MO

As a Senior Full Stack Software Engineer, you will own product features, design scalable systems, mentor teammates, and ensure coding excellence while collaborating with cross-functional teams.

Lead full-stack engineering efforts, architect real-time workflows, mentor engineers, and drive product initiatives across backend services and frontend applications.

The Technical Lead guides feature design and project delivery, mentors engineers, enforces coding standards, and collaborates with multiple teams to enhance product quality and effectiveness.

Lead QA testing for storage features, develop test strategies, automate testing, and collaborate with cross-functional teams to ensure product quality. Requires experience in multiple protocols and operating systems.

As a Senior Software Engineer, you will build cloud solutions, define migration strategies, mentor junior engineers, and ensure architectural integrity while collaborating with peers.

The role involves architecting and developing an AI-integrated EHR/EMR system and video conferencing platform, leading cloud infrastructure scaling and enhancing patient engagement through AI-driven solutions.

The Senior Software Engineer will build and operate systems for Vanta's FedRAMP environments, focusing on reliability, compliance, and incident response, while collaborating with product teams and improving operational readiness.

The role involves developing and maintaining scalable cloud-based services, enhancing system reliability, automating cloud infrastructure, providing technical leadership, and improving operational excellence.

The Staff Software Engineer will enhance developer productivity by designing tools, automating workflows, and mentoring teams on best practices in developer experience.

The Staff Software Engineer - Platform will design and build core services for scalable data analytics, mentor teams, enhance platform reliability, and implement cloud-native solutions.

Develop new features, fix bugs, refactor codebase in a TypeScript/React environment, collaborate with teams to meet user needs, and contribute to team culture.

Design and deliver features for the Ready-to-Build product, collaborate with sales and implementation teams, maintain and test code, enhance platform functionality.

Design and build backend functionalities for Temporal's high-availability services, ensuring reliability and scalability across cloud environments. Document processes and maintain service metrics.

The Staff Software Engineer leads the technical direction of the Quality and Release Platform, focusing on release engineering and code quality. Responsibilities include designing CI/CD systems, mentoring engineers, improving automation, and defining best practices for code quality and AI tools.

As a Senior Software Engineer, you will design and implement AI technologies to address complex logistics challenges and mentor team members.

As a Senior Software Engineer, you will develop solutions for improving support agent experience, focus on backend components, and collaborate with cross-functional teams.

Design, implement, and optimize core frontend, backend, and model-integration components. Drive engineering direction, ship and scale LLM-powered applications, build robust APIs and streaming systems, establish CI/CD and instrumentation, and deliver production-grade agentic workflows with measurable reliability and performance.

As a Staff Backend Engineer at FloSports, you'll lead backend development initiatives, focusing on scalable distributed systems, authentication frameworks, and mentoring engineers while collaborating with product teams for technical solutions.

Design and implement backend services in Go for high-throughput AI workloads. Collaborate with teams, optimize system performance, and maintain cloud integrations.

The Senior Software Engineer will develop features for Phantom's web platforms, lead new product initiatives, interface with users, and contribute to team culture.

The Senior Software Engineer will develop backend systems, mentor engineers, and collaborate with cross-functional teams while contributing to product features and roadmaps.

Lead design, build, and maintain CRM and MarTech integrations and services; lead technical discovery and execution; mentor engineers; collaborate with marketing and cross-functional teams; ensure system stability and participate in on-call rotations.

As a Staff Software Engineer, you will architect and scale AI/MCP Server and Gateway for multi-agent workflows, ensuring reliability and performance while collaborating with cross-functional teams.

As a Senior Software Engineer, you will develop scalable applications, collaborate with teams, and improve code quality while maintaining backend system reliability.

As a Staff Software Engineer at Radiant Security, you'll build and optimize data platforms, ensuring scalable data ingestion and system performance while collaborating across teams.