Top Software Engineer Jobs in St. Louis, MO

Build and operate an AI-native software development lifecycle across planning, coding, review, testing, deployment, and incident response. Develop internal AI agents, shared harnesses, CI/CD gates, automated QA, code reviewers, and developer workflows. Embed with engineering teams, ship on their backlogs, drive adoption, remove infrastructure and tooling blockers, and measure improvements in throughput, quality, cycle time, cost, and developer experience.

Lead architecture, design, and implementation of cloud-native TFDM applications. Drive DevOps/GitOps CI/CD pipelines, containerization (OpenShift/Kubernetes), infrastructure-as-code, AI-assisted development, system modernization, troubleshooting, mentoring, and executive briefings to support deployment, automation, reliability, and security.

Develop and maintain scalable client-side and server-side applications using JavaScript and Python. Work across the software development lifecycle, including architecture, deployment, testing, and maintenance. Improve reliability, performance, code quality, and operational practices through code reviews, mentoring, observability, and monitoring. Build AI/ML infrastructure supporting LLMs and RAG systems, contribute to open-source projects, and develop secure, production-ready platforms and developer tools.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

As a Senior 3D Software Engineer, you will develop advanced 3D algorithms while collaborating with cross-functional teams in an agile environment.

Build, operate, and maintain scalable backend services and Kubernetes clusters across AWS and Azure. Contribute production code, Terraform IaC, CI/CD/GitOps workflows, observability, and testing while learning from senior engineers.

The Software Engineer will design, implement, and maintain real-time services for Twilio's Voice Trust team, ensuring robust and high-throughput communication solutions. Responsibilities include gathering requirements, coding, testing, and on-call support in a distributed production environment using Agile methodologies.

Design, build, deploy, and operate resilient, large-scale backend services and Kubernetes clusters across AWS and Azure. Implement GitOps/CI-CD, automate infrastructure with Terraform, ensure observability and reliability, identify technical debt, and mentor junior engineers.

Design, build, and maintain web application infrastructure and data systems for interactive information experiences. Lead application architecture, code quality, performance, and reliability; integrate generative AI and prototype XR interfaces; collaborate with designers and data scientists; ensure security, accessibility, scalability, and document technical standards.

Deploys, integrates, operates, and optimizes high-performance NFS storage for Kubernetes, bare-metal, GPU, and AI workloads. Responsibilities include CSI integration, Linux and NFS tuning, cluster storage operations, air-gapped deployments, infrastructure-as-code with Terraform/OpenTofu, GitOps pipelines, observability, and end-to-end troubleshooting of storage performance, reliability, and scaling issues.

Develop and maintain secure full-stack web applications using React, C#, .NET, SQL Server, Azure, and related technologies. Design integrations through web APIs, analyze requirements, debug defects, conduct root-cause analysis, write unit tests, perform code reviews, and document implementations. Participate in Agile ceremonies, follow OWASP security practices, uphold coding standards, automate processes, and collaborate with technical and non-technical stakeholders. This is a full-time temporary role through the end of 2026.

Develop, enhance, test, deploy, and support clinical applications within the IHS RPMS system. Analyze requirements, translate designs into code, troubleshoot complex software issues, address accessibility and security considerations, support testing and documentation, provide customer support, and report on technical findings and project progress while collaborating with multidisciplinary teams.

Design, build, and scale resilient distributed payment systems handling 1,000+ transactions per second. Collaborate with Product, Revenue Operations, Cloud Platform, and Security teams to shape product requirements and roadmaps. Lead AI-augmented software delivery, code reviews, testing, observability, performance optimization, incident response, on-call rotations, and root cause analysis while maintaining strict security, reliability, and low-latency standards.

The Senior Software Engineer will build user features using Golang and cloud technologies, lead tool implementation, and collaborate across teams to enhance productivity.

The role involves designing and expanding backend systems, mentoring engineers, and executing technical strategies to modernize architecture and improve system performance.

Own reliability, monitoring, and incident response for AI infrastructure; build automation and CI/CD tooling; manage Kubernetes/Docker production workloads; partner with infrastructure, security, and compliance; improve observability and documentation; develop internal full‑stack tooling in Go or Python.

Lead architecture and multi-year technical strategy for financial data pipelines and reporting. Design and deliver backend services in Go, ensure accuracy, timeliness, and auditability of financial data, and partner with Finance/Accounting/Tax to translate regulatory requirements into scalable systems. Mentor senior engineers and set architectural standards across Financial Engineering.

Build and scale full-stack customer and agent support experiences across React/TypeScript frontends and Go backend services. Own APIs, integrations, and AI/ML vendor integrations, drive CX outcomes through experimentation and metrics, improve reliability through on-call incident response, and collaborate with Product, Design, and Ops to deliver measurable product outcomes.

Design and deliver improvements to Wikipedia’s wikitext processing infrastructure, write PHP and JavaScript, maintain internet APIs, instrument components, and use caching and persistence technologies. Collaborate across engineering, product, design, client, and volunteer communities; own complex technical projects, make architectural decisions, maintain reliable high-performance software, write tests, address security feedback, and mentor engineers.

Designs and develops hyperscale Azure Storage backend technologies, improving reliability, scalability, observability, and engineering productivity. Leads technical strategy and high-impact initiatives across teams, architects engineering systems and pipelines, advances test automation, investigates networking and deployment issues, and improves development workflows. Responsibilities include coding, requirements analysis, design documentation, estimation, dependency identification, and on-call response for service degradation and outages.

Lead the architecture and delivery of scalable compliance-platform capabilities for government vendors, federal agencies, and SLED organizations. Design new workflows, shared infrastructure, and tagging systems while partnering with engineering, product, go-to-market teams, and early design partners. Translate evolving requirements into durable solutions, lead complex cross-functional projects, and help shape engineering culture in a rapidly scaling environment.

Lead development of Elasticsearch vector similarity search capabilities, including designing algorithms and data structures, implementing features, fixing bugs, and improving code quality. Collaborate asynchronously with a globally distributed engineering team and open-source community. Serve as a subject-matter expert on vector search relevance and implementation while contributing modern Java code and guiding cross-functional initiatives autonomously.

Own the design and implementation of WISEcode’s automated quality engineering ecosystem. Build AI-augmented UI, API, integration, regression, database, performance, and reliability testing frameworks for ASP.NET and Blazor applications. Integrate testing into CI/CD, improve observability and release confidence, investigate failures and race conditions, validate AI/ML outputs, and establish scalable quality standards and metrics across engineering teams.

Lead the technical direction, architecture, and development quality of complex Android applications. Mentor engineers, integrate backend services, support offline-first functionality and diverse hardware, oversee CI/CD and releases, and document engineering standards. The role also involves robotics integrations for public safety use cases, including drones and body-worn cameras, while collaborating with technical and non-technical stakeholders.

Design, implement, debug, and ship features for Azure Storage front end at cloud scale. Drive design, dependency identification, automation, reliability, observability, and on-call incident response while collaborating with stakeholders and mentoring engineers.