Top Software Engineer Jobs in St. Louis, MO

The Lead Software Engineer will design, develop, and maintain embedded software for defense systems, ensuring compliance with standards and coordinating project management functions.

Lead engineering team to design, analyze, test, and certify aircraft software per FAA standards (DO-178B/C). Act as FAA liaison, oversee technical documentation for certification, mentor staff, resolve complex engineering issues, and ensure on-time delivery of safety-critical certification milestones.

Design, develop, test, deploy, and operate high-scale, cloud-native applications and microservices. Integrate systems, participate in architecture and roadmap discussions, triage and resolve production issues, and contribute to Sprint activities while improving scalability and CI/CD-driven delivery.

Lead a team to design and maintain secure software development environments, implementing DevSecOps practices and mentoring early-career employees.

Develop and maintain backend-to-UI applications, apply modern practices (microservices, serverless, CI/CD), write and document code, participate in estimations, troubleshoot performance and production issues, and collaborate in agile teams.

The Software Engineer/Senior Software Engineer will design, develop, and maintain high-quality software and automated test systems, engaging in technical discussions and ensuring application performance and reliability.

As a Software Developer, you'll design, develop, test, and deploy software solutions in an Agile environment, focusing on geospatial applications and infrastructure problems.

Design, build, and operate scalable Salesforce CRM and billing solutions (Apex, LWC, Flows). Deliver end-to-end features, integrate Salesforce with external systems, ensure reliability and security, support production (on-call), document runbooks, and mentor junior engineers while partnering with cross-functional stakeholders.

Lead system-level integration, verification, and validation of software/hardware mission systems using DevSecOps, CI/CD, containerized deployments, and cloud-native test environments. Develop and maintain requirements and traceability, define test strategies and acceptance criteria, analyze results, drive corrective actions, and mentor junior engineers. Ensure interoperability, performance, and mission assurance in secure DoD environments.

Lead and coordinate OFP software teams and integration activities while owning Cost Account Management. Oversee budgets, EVM metrics (CPI, SPI, ETC, EAC), forecasts, and variance corrective actions. Collaborate with systems engineering, test, QA, and supply chain to deliver embedded/flight software on schedule and within scope, and mentor junior engineers.

Develop and enhance infrastructure using Rust and C++, ensuring high-performance applications with a focus on memory safety and concurrency.

As a Software Engineer for the ARC team, you'll design and implement secure backend systems, manage model inference layers, improve engineering standards, and collaborate with teams to meet government agency needs.

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.

The Software Engineer will develop cloud-native solutions, manage teams, ensure compliance with software development guidelines, and lead project documentation.

The Software Engineer will analyze, design, code, test, and modify software products, focusing on Unifier and OPPM platforms, and collaborate on integration solutions in an agile environment.

Lead technical strategy for Dropbox's core systems and AI integration, drive technical outcomes, and influence multiple teams. Involve hands-on software development and architecture for scalable products.

As a Senior Software Engineer on the PMI team, you'll design and develop backend systems, collaborate on API lifecycle, support team operations, and engage in team growth activities.

The Senior Software Engineer will build core infrastructure for multi-agent orchestration, design reliable backend services, and handle system architecture for scale and resilience. Responsibilities include collaborating with teams, defining platform primitives, and driving technical decisions in an evolving environment.

Lead the technical vision for Android experiences, design scalable solutions, partner with product teams, and drive engineering excellence while mentoring others.

Design, build, test, and roll out backend features for Toast's payments platform. Deliver scalable, secure APIs, collaborate with PM/UX and cross-functional teams, implement automated tests, monitor releases, and participate in design and code reviews.

As a Principal Software Engineer, you will design, develop, and implement complex software solutions, lead projects, and ensure compliance with standards in a cloud-first environment.

The Senior Full-Stack Software Engineer will design, build, and scale SaaS products, improve application performance, and lead technical initiatives. Responsibilities include modernizing web applications, contributing to backend services, and mentoring other engineers.

The role involves leading projects as a full-stack engineer, focusing on SaaS products, enhancing user experiences, and building accessible software.

The Full-Stack Software Engineer will enhance user interfaces, APIs, and develop features for AI applications while collaborating with teams and ensuring code quality.

As a Senior Software Engineer, you will develop and scale communication systems, enhance engineering standards, and troubleshoot issues across the technology stack.