Top Senior Software Engineer Jobs in St. Louis, MO

Lead frontend architecture and execution for high-traffic Search features using React and TypeScript. Build map-based visualizations, optimize client-side performance and state management, collaborate with product/design/backend, conduct code reviews, mentor peers, and ship production-grade web features.

Lead frontend architecture and implement responsive React/TypeScript web applications and low-latency live video playback. Optimize UI performance, design client-server APIs to cloud microservices, and collaborate with product, design, and backend teams to deliver real-time, high-traffic video features.

Design, scale, and maintain high-throughput backend data pipelines for real-time asset ingestion. Optimize databases, pub/sub systems, and distributed storage; lead migrations to Go while keeping TypeScript services performant. Collaborate cross-functionally, mentor engineers, perform code reviews, and deliver production-grade pipeline features under heavy traffic.

Lead technical strategy and architecture for a large-scale Content Platform that powers marketing campaigns. Solve ambiguous cross-team problems, design scalable backend and AI-driven systems, mentor senior engineers, and partner with product, design, and marketing to drive execution and engineering standards across the org.

The Staff Engineer will lead the Systems team, design scalable cloud infrastructure, optimize data pipelines, and ensure platform reliability and security.

Design, build, and maintain scalable, secure cloud infrastructure and SRE practices. Implement IaC, Kubernetes/Helm deployments, CI/CD pipelines, monitoring/observability, automation, security/compliance, capacity planning, and mentor junior engineers to ensure reliability and performance.

Provide technical leadership across the simulation platform: define architecture, drive feature delivery, debug complex multi-module issues, conduct code reviews, collaborate on QA/CI/CD, and mentor engineers to modernize and maintain the legacy Windows desktop codebase.

Design, build, and operate high-concurrency distributed microservices for spam detection and email delivery. Lead architecture, CI/CD, cloud-native (GCP) operations, telemetry, and AI-assisted/agentic workflows. Integrate LLMs for detection and diagnostics, mentor engineers, and drive reliability, performance, and automation across production systems.

The Lead Software Engineer will design and maintain scalable software solutions, provide technical guidance, mentor junior engineers, and ensure software quality while collaborating 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 Senior Software Engineer, you will build cloud solutions, define migration strategies, mentor junior engineers, and ensure architectural integrity while collaborating with peers.

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.

Own and modernize core data infrastructure and pipelines to ensure accurate usage capture, transformation, and monetization. Contribute to architecture, maintain integrations with billing/CRM/payment platforms, evolve customer account UIs, and improve legacy Laravel systems while collaborating across a distributed team.

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

The role involves designing, developing, and maintaining iOS applications, driving technical architecture, and promoting knowledge sharing within the team.

The Senior Software Engineer II will design and implement complex backend systems for a data streaming platform, lead technical projects, and mentor engineers in a cloud-native environment.

This role involves owning and evolving the backend platform for AI employees, mentoring engineers, optimizing system performance, and driving architectural decisions at Supernal.

The Principal Software Engineer will provide architectural guidance, mentor developers, manage risks, and ensure high-quality software production across various teams and product areas.

Lead the design and implementation of APIs, develop data pipelines, and mentor teams on AI integration and Agile methodologies.

As a Senior Software Engineer, you will architect and build scalable systems for global tax compliance, ensuring accuracy and auditability. Responsibilities include developing microservices in Golang, managing data pipelines, and leading cross-functional collaboration.

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

Design, build, and maintain cloud-first, highly available infrastructure and tooling for Cribl's telemetry platform. Drive automation, reliability, scalability, and API-driven solutions across distributed SaaS systems, and participate in on-call and operational duties.

Lead the creation of an AI-powered software generation platform, partner with AI and infrastructure teams, and define success metrics to enhance developer experience.

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 Senior Software Engineer will lead design for large cloud platform projects, troubleshoot system issues, and mentor engineers, focusing on scalability and reliability.