Top Software Engineer Jobs in St. Louis, MO

Lead a 10+ engineer team developing embedded real-time Vehicle Management System software for the MQ-25 VMSC. Own architecture, design, coding, integration, verification, supplier management, test development, process/tooling, mentoring, and act as technical SME. Requires avionics certification and U.S. clearance eligibility.

Lead a DevSecOps team to create secure development toolchains, implementing modern solutions such as CI/CD pipelines and mentoring engineers.

Design, develop, test, and maintain system and subsystem engineering models using MBSE (Catia Magic/DoDAF). Manage requirements, verify TMP system changes, develop architectures, collaborate with developers, and ensure compliance with DoD standards.

As a Software Engineer, you will design, develop, and deliver high-quality software, contribute to code reviews, monitor application performance, and ensure maintainability and consistency across products.

Lead design, implementation, test, and deployment of embedded ATE software for armament support equipment. Oversee and mentor software teams, interact with customers, define requirements and roadmaps, drive releases and DevSecOps practices, support field sustainment, and ensure technical conformance and deliverables.

The Senior Software Engineer will design, develop, test, and maintain weapon planning software using Agile methodologies, focusing on mission-critical systems for defense programs.

As a Software Engineer in Tools & Services, you will design testing frameworks, contribute to code quality, and work with a dynamic team on high-quality software solutions.

Manage clusters, develop with Golang, provision infrastructure with Terraform, and enhance performance of the platform handling untrusted code.

Develop and enhance backend systems, collaborate with teams for project execution, and improve engineering standards and processes.

Develop a platform for liquidity and loan collateralization. Responsibilities include building and integrating data pipelines, creating user experiences, and collaborating with teams for system design.

Seeking a Software Engineer/Senior Software Engineer to design, develop, and deliver quality backend services and APIs using Go, with emphasis on Kubernetes and cloud services.

The Principal Software Engineer will define technical roadmaps, guide system architecture, mentor leaders, and drive product direction in Capital Supply operations.

As a Software Engineer, you'll design, build, and maintain IAM solutions, ensuring security and reliability while working with cloud computing standards.

Design and implement CIAM backend services for authentication and authorization. Integrate identity systems, manage secure flows, and automate infrastructure.

The role involves designing, developing, and maintaining backend services including APIs for payments, subscriptions, and integrations, while collaborating closely with cross-functional teams.

Senior Java Software Engineer responsible for full SDLC on the Vehicle Management Team: developing prototypes, coding Java/J2EE applications, analyzing requirements, configuring J2EE servers, performing unit/integration testing, and collaborating with IT teams on web, mobile, and cloud solutions using Spring, Hibernate, Struts, Oracle, and Web Services.

Design and develop complex software solutions for the FedNow service, leveraging cloud technologies, Java, and Agile methodologies, ensuring high-quality and timely infrastructure support.

The software engineer will build full-stack features for Kora's voice AI agent, integrating data, refining prompts, and expanding multi-modal capabilities while mentoring peers and ensuring technical quality.

Lead and manage a team of software verification engineers to design, develop, and execute requirements-based test plans and automated test frameworks. Perform functional, performance, and safety verification, report defects, and support formal qualification testing. Coordinate with program management, systems engineers, and developers in an Agile, CI/CD-driven environment for defense flight systems.

Design, develop, test, and maintain non-embedded software for the Tomahawk program. Translate requirements into designs, implement features, troubleshoot issues, execute R&D tasks, and ensure compliance with government and safety standards.

Design, develop, test, and maintain desktop and web applications that control automated saw machinery. Integrate software with electrical and mechanical systems, refactor for performance and reliability, participate in code reviews, and use AI-assisted and Agile development practices to deliver maintainable, production-quality solutions.

Design and develop software solutions enhancing user experience for Governance features, contribute to open-source software, communicate technical designs, and support team quality through reviews.

The role involves building core infrastructure for orchestrating intelligent agents, defining platform primitives, and ensuring systems scale and reliability. Collaboration with internal teams and end-to-end system ownership are essential.

Design and develop software modules in C++, perform unit and integration testing, and partner with QA. Must have 3+ years experience and strong Linux skills.

Design, develop, test, and deploy scalable backend-to-UI applications using modern practices (microservices, serverless, CI/CD, IaC). Leverage AI-assisted coding and LLM tools to accelerate development, write unit tests and documentation, participate in estimations and architecture discussions, triage and resolve performance or production issues, and collaborate in an agile team.