Software Engineer Jobs in St. Louis, MO

Develop responsive front-end interfaces for an ERP system using JavaScript, React.js, HTML, and CSS. Integrate RESTful APIs with PostgreSQL backends, translate UI designs into functional applications, support API contracts and testing, collaborate on CI/CD and containerized environments, document technical work, and maintain reusable components and libraries.

Lead enterprise backend software design, development, deployment, modernization, and sustainment. Architect AWS-based containerized applications and DevSecOps pipelines, integrate geospatial systems, establish technical standards, mentor developers, supervise teams, and guide complex client technology assignments. Support agile delivery, automation, testing, proposal development, technical documentation, and client briefings.

Leads the design, development, deployment, modernization, and sustainment of enterprise backend services and cloud applications. The role includes architecting DevSecOps pipelines, scaling AWS containerized systems, integrating geospatial solutions, establishing technical standards, mentoring developers, and improving project outcomes. It also supports client engagement, proposal writing, technical briefings, and development of specialized spatial analysis tools and algorithms.

Seeking a Mid Level Software Engineer to develop enterprise applications using Java, JavaScript, or Python, along with database design and micro-service architecture expertise.

Develops and maintains virtualized application packages for Citrix and VMware VDI environments supporting Intelligence Community missions. Validates applications, manages user settings and sequencing, configures application delivery infrastructure, troubleshoots VMware environments, applies patches, improves disaster recovery, resolves incidents, and creates technical documentation and training materials. Requires expertise in VDI, Citrix application virtualization, systems administration, security practices, and automation.

Design, develop, test, and maintain software for the Tomahawk program, translating customer requirements and ensuring product reliability. Requires 5+ years experience in .NET and SQL, with a Secret clearance.

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.

As a Senior Software Engineer, you'll design and implement cloud-native solutions using TypeScript, React, and NestJS while optimizing performance on Azure. Responsibilities include developing APIs, conducting code reviews, and ensuring software quality through testing, working collaboratively within an agile team.

Develop, deploy, and maintain cloud-based full-stack applications for defense customers using AWS services. Write code in C#, Java, JavaScript/TypeScript, and Python; implement APIs and database integrations; apply DevOps, CI/unit testing, and GitLab workflows; integrate open-source visualization tools into React/Redux web apps; participate in Agile ceremonies and collaborate to deliver features meeting acceptance criteria.

Senior AI Software Engineer responsible for designing, developing, and deploying generative AI, LLM-powered, and agentic AI systems. Lead system architecture, implement secure cloud-native deployments and CI/CD, collaborate cross-functionally, monitor and optimize production AI, mentor engineers, and enforce technical rigor and documentation for mission-focused federal solutions.

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.

Design and implement cloud-native backend systems for federal customers enabling agentic AI capabilities. Build data pipelines, optimize retrieval, create guardrails and agent orchestration, define requirements with stakeholders, and participate in customer engagements to deliver secure production features.

Contribute to the development, testing, deployment, and modernization of mission-critical TRAC2ES software within an Agile/Scrum team. Participate in Scrum ceremonies, deliver secure and scalable software increments, resolve defects, support demonstrations and feedback loops, and document technical debt and requirements. The role uses JavaScript, Node.js, React, SQL, APIs, cloud-native technologies, Docker, CI/CD, source control, and automated testing.

As a Full Stack Software Engineer, you will develop and deploy software systems for DoD clients, enhancing operational capabilities and cybersecurity.

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.

Support an intelligence customer by packaging and sequencing mission applications for VDI and thick clients, troubleshooting VMware SDDC and VDI infrastructure, improving DR/continuity, applying security patches, documenting designs/test plans, and training staff. Requires TS/SCI clearance and collaboration with testers and SMEs to validate application behavior in non-persistent environments.

As a Software Engineer, lead full-stack development, mentor engineers, and design secure microservices for geospatial applications. Collaborate with teams to meet compliance and performance needs.

Designs and maintains CI/CD pipelines, Docker build environments, automated infrastructure, package creation workflows, and secure artifact delivery systems. Responsibilities include provisioning scalable build infrastructure, generating SBOMs, vulnerability scanning, license compliance, monitoring build performance, automating testing, modernizing legacy workflows, and securing third-party dependency supply chains across cloud and on-premises environments.

Develop scalable backend services, APIs, geoprocessing workflows, integration services, and data pipelines supporting ArcGIS Enterprise and mission-critical geospatial applications. Build automation and connectors, extend containerized platforms, support cloud and on-premises deployments, and improve distributed-system reliability through testing, monitoring, observability, and performance optimization. Collaborate with GIS, platform, and DevOps teams to deliver secure production solutions.

Embed with U.S. government customers to design, build, deploy, and maintain mission software from prototype to production. Own end-to-end delivery, build backend systems and data integrations, collaborate with product and engineering to scale reusable capabilities, and serve as the technical point of contact to drive adoption and mission impact.

Develop and optimize high-throughput, low-latency C++ applications for performance and reliability. Responsibilities include identifying bottlenecks and bugs, refactoring code, conducting peer reviews, developing automated tests, debugging multithreaded systems, and collaborating with QA, Operations, architects, product owners, and cross-functional teams to resolve performance issues.

The Senior Software Engineer role involves developing enterprise applications using Java, JavaScript, or Python, managing databases, and providing support for geospatial information systems, among other responsibilities.

Design and implement backend geospatial services and APIs using Python, Node.js, and Java. Extend and integrate ArcGIS Enterprise, build containerized tooling and ingestion pipelines, support cloud and on-prem deployments, and improve reliability through testing, monitoring, and collaboration with platform, DevOps, and GIS teams.

Design, develop and deliver enterprise-grade software for financial data and analytics. Build AI-powered analytics, implement CI/CD and test automation in cloud environments (AWS/Azure), work across the full stack, solve complex engineering problems, and collaborate with cross-functional teams globally.