Top Software Engineer Jobs in St. Louis, MO

Serve as the technical IC leader for the Provider organization: set technical roadmap and engineering standards, design and review architectures, drive cross-team initiatives, mentor engineers, and deliver high-throughput, low-latency, cloud-based microservice systems for provider-focused products.

Build and scale full-stack systems to improve provider onboarding and supply; design distributed, maintainable services; lead high-priority projects; mentor engineers; integrate AI-assisted and LLM-based features; drive provider-facing product quality and reliability.

Lead design and delivery of complex web and mobile product areas, build and maintain React/React Native applications, architect scalable systems and APIs, optimize databases and performance, drive engineering standards and test coverage, mentor engineers, and collaborate with leadership and stakeholders in a fully remote environment.

Microsoft Software Engineer role (IC3/IC4) with published U.S. base pay ranges. Job posting lists compensation bands and EEO/accommodation information; specific technical responsibilities and qualifications are not provided.

Lead and mentor engineering teams to design, build, deploy, and operate Java/Spring microservices and cloud-native clinical interoperability products. Collaborate with product, EHR partners, and cross-functional teams, ensure code quality, CI/CD, security, observability, and Agile delivery for large-scale healthcare systems.

Architect and build backend systems for a real-time Command and Control platform directing large swarms of heterogeneous aircraft. Develop distributed infrastructure for mission control despite intermittent communications, ingest and process high-throughput telemetry and sensor data, and manage scheduling and data links. Own backend features from design through deployment while supporting reliability, scalability, CI/CD, QA, and DevSecOps practices.

Lead frontend architecture for Legion’s real-time Command & Control platform, enabling operators to plan and direct large swarms of heterogeneous aircraft. Build collaborative, resilient interfaces for telemetry, sensor data, scheduling, crew resources, and data-link management during intermittent communications. Establish frontend standards, mentor engineers, and deliver performance-sensitive applications with strong CI/CD, QA, and DevSecOps practices.

As a Senior Full Stack Software Engineer, you will build and improve products, create user interfaces and APIs, and collaborate with various teams to enhance the customer experience.

As a mid-level Software Engineer, you'll deliver Python-based platform features, collaborate with teams, and maintain system reliability and scalability.

Seeking a Senior DevOps Engineer for OpenSesame, focusing on CI/CD pipelines, cloud infrastructure, and automation. Responsibilities include improving developer experience and mentoring teams.

Design, build, and operate high-scale distributed observability systems for telemetry ingestion, processing, storage, autoscaling, and service provisioning. Own platform reliability, performance, capacity, and cost efficiency; participate in on-call rotations and resolve incidents through root-cause fixes. Develop automation, identify architectural bottlenecks, contribute to technical roadmaps and design reviews, and collaborate with infrastructure, product, and engineering teams.

Develop and maintain a telemedicine platform using React, TypeScript, Python/Flask, and PostgreSQL. Responsibilities include designing, implementing, testing, deploying, debugging, and supporting software across the full lifecycle; building accessible web interfaces; integrating APIs and third-party services; reviewing code and designs; documenting technical decisions; improving scalability and maintainability; collaborating cross-functionally; and mentoring engineers.

Build and deploy full-stack product features across user interfaces, APIs, and cloud environments. Design, develop, test, debug, maintain, and support scalable software tailored to aviation and defense operational technology needs. Contribute to architecture, security, compliance, and quality standards while mentoring peers and participating in Agile development. Required experience includes JavaScript or TypeScript, a modern frontend framework, Go, REST APIs, AWS, Docker, CI/CD, and SaaS product development.

Develop high-quality, performant, accessible consumer-facing experiences for Netflix’s iOS app using Swift and GraphQL. Responsibilities include building maintainable code, automation, documentation, server-driven UI infrastructure, and ad experiences. Collaborate with product managers, designers, and engineering teams to scope projects, refine interfaces, design scalable solutions, and balance business, product, and architectural trade-offs.

The role involves full-stack software development, adhering to Agile practices, and collaborating across teams. Responsibilities include coding, testing, and maintaining software systems while mentoring team members.

Develop and maintain backend features for Cribl Edge data collection agents running across Windows, Linux, and macOS. Design scalable, reliable software for hundreds of thousands of nodes, collaborate with product and UX teams, write automated tests, troubleshoot production issues, and support SaaS products through on-call rotations. The role requires TypeScript and Node.js development, cloud and container experience, operating-system knowledge, and experience with data-intensive applications or stream processing.

Build and maintain full-stack monetization features across web and mobile, including enrollment flows, paywalls, subscriptions, reactivation, and marketing integrations. Collaborate with Product, Design, Marketing, and Data teams to run experiments and optimize revenue. Instrument features, monitor production systems, use AI-assisted development tools, and apply strong testing and software engineering practices.

Develop backend systems for 3D AutoReview, including geometry parsing, model analysis, quality detection, rule systems, scalable APIs, and AI-assisted review workflows. Collaborate with backend, frontend, product, and machine learning teams to deliver production features. Build extensible systems for custom 3D rules and reference data while experimenting with CAD, machine learning, and large language model technologies.

Lead design and delivery of full-stack, AI-powered products and platform capabilities. Own technically complex, mission-critical areas end-to-end, partner with product and customer teams, scale data ingestion and APIs, and mentor engineers to raise engineering quality and velocity.

Lead technical strategy and delivery for mobile app infrastructure, owning shared components (design system, networking, CI/CD, observability, releases, tooling). Collaborate cross-functionally, set code/design standards, ensure operational readiness and on-call processes, mentor engineers, and drive large, business-impacting projects and migrations across the JS↔native boundary.

Lead design, build, and deploy scalable, reliable Java-based microservices in a cloud-native, event-driven AWS environment. Own backend feature design, code quality, automated testing, and FedRAMP release processes. Mentor engineers, participate in on-call/TechOps, integrate AI tools into development, and drive architecture, observability, and cross-team initiatives.

The Senior Search Engineer will focus on improving the search system for Vannevar's product, collaborating with engineers to leverage full-text search and emerging technologies, and enhancing user experience by improving search latency and relevance.

Develop and support secure payment solutions across Ingenico EMV terminals, .NET backend services, Android integrations, processor gateways, tokenization, and mobile wallets. Implement payment workflows, device management, webhooks, settlement, reconciliation, and reporting. Participate in EMV Level 3 certification, regression testing, production troubleshooting, and reliability improvements while collaborating with internal teams and external processors.

Lead technical strategy and execution for a backend ledger team building highly available, audit-grade financial systems. Drive architecture, reliability, monitoring, on-call practices, code quality, cross-functional collaboration, and mentoring to ensure accurate, scalable ledger operations.

As a Staff Software Engineer at Samsara, you will lead and develop a high performing team, champion company culture, and contribute to the development of IoT platform solutions.