Software Engineer Jobs in St. Louis, MO

Designs and maintains Python-based automated testing frameworks covering CLI, UI, API, integration, end-to-end, performance, and regression testing. The role develops test strategies, integrates automation into CI/CD pipelines, validates APIs and backend data, manages defects, supports releases, and promotes Quality Engineering practices across Agile teams. It requires collaboration with globally distributed stakeholders and involvement in continuous improvement, test management, process audits, and adoption of modern testing tools.

The Senior Software Engineer will collaborate on projects, optimize existing functionality, and ship cloud functions using Kotlin, focusing on enhancing product experience.

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.

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

Seeking a Senior Software Engineer experienced in C++ and embedded systems for defense projects, requiring on-site presence and U.S. citizenship.

Develop, test, and maintain web-based geospatial intelligence applications using Java and/or Python. Integrate relational and non-relational data stores, support GIS-enabled features, participate in code reviews and Agile sprints, apply secure coding practices, and assist with troubleshooting, performance tuning, and documentation.

Design and develop real-time embedded software for safety-critical avionics and space systems. Implement software (Ada or C++) meeting DAL A / LOR Level 1 standards. Work on features like synthetic vision, flight management, guidance/navigation, and datalink. On-site in St. Louis; U.S. Person required.

Design and implement complex low latency, high throughput software for financial data distribution, conduct testing, and improve software reliability.

Design and implement scalable backend services, APIs, and geoprocessing workflows for ArcGIS Enterprise. Build connectors, ingestion pipelines, and containerized tooling; support cloud-native and on-prem deployments, observability, and integrations to deliver reliable geospatial backend systems for mission-critical defense and intelligence applications.

Design, implement, and maintain CI/CD pipelines and build infrastructure (GitHub Actions, Azure DevOps, Jenkins). Automate containerized builds with Docker, manage Conda/Python package creation, integrate SBOMs and vulnerability scanning, provision infrastructure as code, monitor build performance, and secure the software supply chain for mission-critical deployments.

Build responsive front-end interfaces for an ERP using JavaScript, React, HTML, and CSS. Integrate and consume RESTful APIs with PostgreSQL backends, collaborate on API contracts, CI/CD, containerized environments, create reusable components, and maintain technical documentation.

Lead design and deliver enterprise-grade, scalable software solutions; mentor engineers; drive CI/CD, testing automation, and AI-assisted engineering practices; evaluate emerging technologies; collaborate across regions to solve complex finance-focused engineering problems.

As a Senior Software Engineer in News Engineering, you'll evolve the news platform, focusing on performance, observability, and automation in a cloud-native environment. You'll design critical services, lead scrum teams, and enhance real-time news delivery using Java and Python.

As a C++ Software Engineer, you will design and develop software solutions, ensuring performance, stability, and quality through testing and collaboration with teams.

As a Senior Software Engineer, you will lead the development of scalable backend systems, manage feature development lifecycles, and engage with stakeholders to translate mission needs into technical requirements while ensuring implementation meets criteria.

The Staff Software Engineer will lead implementations, mentor engineers, define technical strategies, and communicate with stakeholders while enhancing federal engineering capabilities.

This role involves leading backend services development, optimizing DevSecOps, and modernizing applications on AWS, while mentoring teams and driving geospatial solutions.

The Senior Software Engineer analyzes, designs, and implements software projects, focusing on Oracle EPM solutions and cloud configurations, and mentors less experienced developers.

Design and develop scalable applications, collaborate across teams, troubleshoot issues, and utilize modern development practices in cloud environments. Requires extensive software engineering experience, particularly in Java and cloud technologies.

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.

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, implement, and maintain high-performance CI/CD pipelines and build infrastructure for cloud and on-premises deployments. Architect Docker environments and Conda package workflows, automate provisioning of runners/nodes/registries, integrate security gating (SBOMs, vulnerability scanning, signing), monitor build performance, perform automated load testing, modernize legacy workflows to everything-as-code, and manage secure third-party dependency lifecycles.

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.

Contribute to high-performance, real-time applications processing critical financial data. Collaborate with teams, develop clean applications, and maintain testing strategies.