Top Software Engineer Jobs in St. Louis, MO

The Software Engineer - AI Systems will design and implement systems to coordinate LLMs, build testable software stacks, conduct research, and collaborate with team members to create AI-powered security solutions.

As a Software Engineer, you will design and implement scalable infrastructure systems for AI-powered security solutions, optimize performance, and improve deployment practices across cloud environments.

This role involves building and maintaining the SAN.com web ecosystem, enhancing product features, improving CI/CD processes, collaborating across teams, and focusing on user experience.

The role involves building and scaling backend services, designing APIs, optimizing database performance, and communicating with customers to improve product quality.

We are seeking a Software Engineer with 1-3 years of experience to join our technology enablement program and focus on Zoho technologies. The role involves designing and implementing digital transformation solutions, requires technical and soft skills, and offers hands-on training and client-facing work.

As a Full Stack Software Engineer, you will lead product features from design to implementation while mentoring other engineers in AI-native workflows. Responsibilities include building scalable backend systems, creating responsive UIs, and driving architectural decisions in a high-urgency environment.

The Senior Back-End Software Engineer designs, develops, and maintains scalable backend systems while taking ownership of the software development lifecycle.

Develop secure, data-rich frontend features using React and TypeScript for a DoD mission-planning platform. Integrate UIs with backend APIs, support map-based and AI-enabled decision-support workflows, write unit/integration tests, participate in code reviews and security remediation, and collaborate with cross-functional teams with periodic onsite sprint planning in Laurel, MD.

Build, test, and integrate secure backend services and APIs for DoD mission-planning. Work on REST and gRPC services, asynchronous workflows, geospatial databases, containerized deployments, CI/CD, automated tests, and vulnerability remediation while collaborating with AI/ML, frontend, and cybersecurity teams.

As a Software Engineer at Canonical, you will design, build, and ship software, improve packaging and distribution processes, and mentor colleagues while contributing to open source projects.

The Junior Ubuntu Software Engineer will design, build, and ship software, focusing on quality and resilience, while engaging with the open source community.

Build and operate scalable Kubernetes (EKS) infrastructure, develop Terraform infrastructure-as-code, maintain internal developer platform and tooling, support automation, security, and performance, and participate in 24x7 on-call rotations and incident escalation.

Design, build, test, and maintain scalable software systems. Collaborate with cross-functional teams, participate in code reviews, write tests and documentation, troubleshoot production issues, and contribute to product and architecture decisions.

The role involves designing, building, and optimizing a data platform, collaborating with cross-functional teams, and ensuring data quality and security.

As a Fullstack Software Engineer, you'll design, build and own the onboarding experience for Twilio's Stytch identity product, creating secure integration solutions for developers and enhancing customer authentication.

Build and own user-facing features and core platform architecture across frontend, backend, and ML pipelines. Integrate AI workflows (LLMs, embeddings) for curriculum generation and automated evaluation. Manage end-to-end development: requirements, design, implementation, CI/CD, testing, observability, and iteration while collaborating with product, design, ML, and customer teams.

Develop and customize applications on the Infor CloudSuite Industrial (SyteLine) platform, integrate third-party systems, and build full-stack web applications. Troubleshoot Infor environments, implement front-end interfaces and backend logic, participate in code reviews, and collaborate with analysts and stakeholders to deliver high-quality payment-processing solutions.

Design and build platforms for new products, develop generative AI features, ensure system reliability, and foster a collaborative culture in a startup environment.

Design, build, and scale distributed backend platforms and APIs. Lead technical design, own production systems, improve CI/CD, observability, and reliability. Mentor engineers, drive engineering best practices, and leverage AI-assisted tools to improve productivity and quality.

Build, operate, and scale cloud-native backend services and APIs for a high-volume vehicle marketplace. Embed AI-driven capabilities into features, use AI tools to accelerate development, participate in on-call rotations, improve reliability, and collaborate with Product, Data, Infrastructure, and SRE teams to deliver production-ready systems.

Design, build, and own full-stack features and platform primitives for Vanta's Integrations Platform. Develop authentication, data-ingestion, and schema-evolution services; build secure, scalable services and UIs with TypeScript, React, and Node.js; improve performance and operational excellence; use AI tools to accelerate development; collaborate across teams to enable a large ecosystem of integrations.

Develop, test, and maintain platform features and services for a digital health platform. Collaborate with product and design teams, write clean code, participate in reviews, debug issues, assist with API development and integrations, and help improve performance, reliability, and scalability while learning modern tools and cloud technologies.

Lead design and implementation of Doowiis frontend, backend, and data systems. Define architecture, build scalable ingestion and analytics pipelines, optimize storage and query performance, ship AI-driven features (LLM/text-to-SQL, embeddings), improve observability and deployment, and mentor engineers while partnering with product and ML teams.

Design and implement front-end features, build high-quality user interfaces, take ownership of product and architecture decisions, collaborate with engineering team, and deliver performant, user-focused solutions.

Design, develop, test, operate and maintain full‑stack web applications with emphasis on frontend and backend integration. Write production-ready code, follow DevOps/CI-CD and security/compliance standards, perform code reviews, troubleshoot failures, and contribute to scalable, reliable architectures and reusable component libraries.