Top Software Engineer Jobs in St. Louis, MO

Design, develop, optimize and maintain ERP financial applications using Oracle and PL/SQL. Integrate systems, ensure security/compliance, resolve defects, lead code reviews, mentor junior developers, participate in Agile/Scrum, and estimate and deliver ERP features.

Develops software architecture, requirements, algorithms, interfaces, and code for flight simulation systems. Builds simulation infrastructure, subsystem messaging tools, aircraft capability models, and testing environments. Integrates software components, documents research and development, and collaborates on an Agile team supporting defense and avionics programs.

Design, modernize, and maintain full-stack applications and microservices using React, Node.js, .NET, and Azure. Lead legacy-to-cloud migrations, data integration workflows, backend data architectures, AI-powered automation, and frontend modernization. Collaborate across scrum teams while ensuring security, disaster recovery, regulatory compliance, and platform stability.

Participate in a 10-week software engineering internship developing, testing, and deploying scalable enterprise applications. Interns collaborate in Agile teams, build APIs and microservices, support cloud and data engineering initiatives, and use approved AI-assisted development tools. Responsibilities include writing tests, reviewing AI-generated code, contributing to architecture and platform work, applying secure SDLC practices, and exploring AI/ML integrations while following regulatory and confidentiality requirements.

Lead cross-functional teams to design, build, and deliver scalable enterprise software and products. Own engagement relationships, product roadmaps, architecture (APIs, microservices), CI/CD and quality practices, project planning, and mentoring of junior staff to drive delivery and continuous improvement.

As a Software Engineer in Frontier AI Infrastructure, you'll design secure systems for the public sector, improve engineering standards, and collaborate with cross-functional teams to meet government requirements. You'll also participate in customer engagements and contribute to the product strategy while ensuring compliance with federal regulations.

Develop and maintain internal full-stack applications using C#/Blazor or Python. Build CI/CD pipelines and infrastructure automation with GitLab, Azure DevOps, GitHub, Artifactory, and SonarQube. Partner with cross-functional teams to improve software delivery, code quality, security, compliance, and operational visibility. Implement scalable enterprise solutions, infrastructure as code, secure development practices, and DevSecOps workflows.

Design, develop, operate, and support mission-critical cloud-native software services for Ford’s connected vehicle platform. Lead architecture and delivery of distributed microservices, improve reliability, observability, performance, security, and scalability, and manage incident response. Provide technical leadership through design reviews, standards, mentoring, roadmap influence, and cross-functional collaboration with product, operations, and platform teams.

Develop and maintain backend services for OppFi’s financial technology platform. Responsibilities include building Java applications and services, collaborating in an Agile environment, conducting code reviews and testing, documenting best practices, and refining technical requirements into production-ready solutions. The role uses AWS, Docker, PostgreSQL, APIs, and related cloud-native technologies.

Lead design and delivery of full-stack basketball scoring, statistics, and postgame features. Build scalable backend services and APIs with TypeScript and Node.js, develop React web experiences, support iOS and Android products, and make architectural decisions. Collaborate across product, design, and engineering teams, ensure code quality and system reliability, mentor peers, and contribute to technical standards and tools.