Top Software Engineer Jobs in St. Louis, MO

As a Mission Software Engineer, you'll develop solutions for government customers by integrating software into existing workflows, requiring significant travel, collaboration, and technical expertise.

Lead architecture and implementation of automated, secure lab provisioning and orchestration for development/integration/test. Drive automation-first DevSecOps practices, reduce manual setup, enforce security/compliance, mentor engineers, and coordinate across engineering, test, cybersecurity, and program teams.

The Software Engineer will develop, integrate, and maintain vehicle management system software, focusing on real-time embedded systems, while providing technical leadership and mentoring teammates.

Develop, integrate, and test Vehicle Management System software for aerospace platforms. Create architectures, algorithms, interfaces, and documentation; execute SDLC tasks, verification and test procedures; provide technical leadership, mentor teammates, and support software processes and metrics. Work under general direction on safety/flight-critical and real-time systems.

Develop, integrate, test, and maintain real-time Vehicle Management System software for aerospace platforms. Produce architectures, requirements, algorithms, and verification artifacts; lead technical efforts, mentor team members, and ensure compliance with safety and industry standards.

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.

The role involves designing, developing, testing, and maintaining non-embedded software for air domain missions, leading junior engineers, and conducting integration testing.

Develop, test, and maintain mission-planning weapon software within a SAFe Agile scrum team. Translate requirements into designs, implement and integrate microservices (C#/C++ back end, JavaScript/TypeScript/React front end), debug issues, write documentation, and perform unit/integration/system-level testing and validation.

Develop software for autonomous systems, leading junior engineers, and performing software testing and integration. Must adapt to new environments and technologies.

Design and re-architect the Identity systems at Dropbox to support multi-product capabilities, mentor junior engineers, and ensure software excellence.

The Software Engineer will enhance developer experience at Benchling by building production release tooling, improve workflows, and collaborate with teams to scale processes. Responsibilities include developing efficient development tools and championing engineering patterns.

Lead architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

Build and optimize backend data pipelines and calculations for 7M+ securities using Python/Django. Implement Airflow pipelines, pandas/Celery-based async calculations, database query tuning, caching, scalable data models, incident investigation, code reviews, and cross-team collaboration to ensure timely, accurate financial data.

The Associate Software Engineer role involves software development for defense applications, participating in design, development, testing, and maintenance while using Agile methodologies.

The role involves designing, developing, and maintaining non-embedded software for the Tomahawk program, ensuring compliance with industry and government standards.

Build, operate, and scale backend systems for card issuing and transaction processing. Break down projects, collaborate with product and cross-functional teams, write tested extensible code, support monitoring and on-call operations, and participate in team growth activities including interviews.

Build and own end-to-end patient onboarding features that improve acquisition, registration, eligibility verification, and conversion. Partner with Product, Design, Analytics, and engineers to run experiments, ship scalable frontend/backend systems, optimize performance and resilience, and iterate based on data to improve patient outcomes.

Lead frontend-leaning full-stack implementation work for carrier and enterprise integrations: architect reusable UI and API layers, author RFCs, guide technical delivery, enforce testing and security best practices, and partner with cross-functional teams to scope and ship production integrations.

Test, develop, document, and unit-test software components for F-15 mission planning systems. Integrate and compile builds, troubleshoot defects, collaborate on solutions, and follow Agile/Scrum processes under general supervision.

Develop, document, unit test, integrate, and troubleshoot software components for F-15 mission planning systems. Work with C#, JavaScript, and SQL under general supervision, collaborate on solutions, and assist in builds and limited target-environment testing.

Design, architect, implement, and test simulation software and virtual environments for flight trainers. Lead integration, validation, and documentation of simulation models, mentor junior engineers, support proposals, and work within agile teams to deliver simulation subsystems and tooling for training systems.

Build and own Eve's marketing site and GTM engineering stack: integrate and optimize external tools, design AI agents for sales and marketing, implement webhooks and middleware to sync product/CRM data, and create programmatic campaigns and internal tools in partnership with Marketing, Sales, RevOps, and Product to drive growth and automation.

As a Senior Software Engineer in Trust & Safety, you'll analyze threats, design systems for abuse detection, and collaborate with teams to implement scalable defenses.

Design and implement secure, scalable backend services for voice agents, integrate AI models and telephony, improve inference, debug concurrent systems, and collaborate with Product to deliver features end-to-end.

Lead the design and implementation of backend services for data cataloging and ML training systems, focusing on performance and scalability.