Top Software Engineer Jobs in St. Louis, MO

Lead design and evolution of event-driven, distributed systems; drive cross-team architecture and delivery; mentor engineers; improve reliability, observability, and scalability; influence technical direction and engineering culture.

As a Senior Software Engineer, you will build software for carbon dioxide removal efforts, focusing on full-stack development and optimizing complex workflows.

The Staff Software Engineer will design and implement user-facing features, architect systems, ensure code quality, and integrate modern tools in a fast-paced environment.

Design and build core LLM platform primitives, safety and observability infrastructure, provider abstraction and evaluation systems, prompt lifecycle and Agent-as-a-Service; collaborate with product teams, document reference implementations, and lead technical standards to enable other engineers to build production AI features.

The Staff Software Engineer will develop user experiences and APIs for banking applications, focusing on code quality, system design, and team mentorship.

As a Staff Software Engineer, you will build and iterate AI-enabled products, working on both the front- and backend, collaborating closely with engineers and dental billers.

Develop and maintain scalable, cloud-based platform services. Enhance reliability and observability, automate infrastructure, provide technical leadership, and improve operational excellence across teams.

The Sr Software Development Engineer will design and maintain scalable cloud-based solutions, lead project technical direction, and ensure high-quality deliverables in a fast-paced Agile environment.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.

Build and improve application and developer infrastructure for a FedRAMP-high US environment: support US-specific hosting/on-call, enhance auth/RBAC, feature-flag tooling, CI/CD, monitoring, and developer experience while collaborating across engineering teams.

Build AI/ML-powered features across ClickHouse Cloud, designing scalable APIs, integrating inference systems and vector DBs, implementing frontend interfaces, and ensuring production-grade monitoring, versioning, and observability for model deployments.

The Senior Staff Software Engineer will lead EHR integrations, building full stack applications and collaborating across teams to solve healthcare challenges. Responsibilities include mentoring engineers, influencing technical decisions, and architecting integration solutions.

Design and implement features for Temporal's AI SDK, collaborate with the community, document APIs, and support reliability in AI applications.

Contribute to mobile application development, collaborating with product and design teams to optimize user experience and performance.

Seeking a Senior Staff Software Engineer to enhance engineering productivity, improve SDLC practices, and integrate AI into development processes.

Develop and maintain web and desktop applications using .NET technologies. Requires strong programming skills, experience with databases, and project management.

As a Senior Software Engineer, you will design and develop complex systems, mentor engineers, and ensure integration of software and security into development processes.

Develop application software in C++ for Nokia's 1830 Optical Transport product, automate tests in Python, and collaborate on software integration and hardware control.

Design, implement, and maintain software for line card modules using C++, Python in a Linux environment, and write device drivers.

The Software Quality Assurance Engineer will lead development activities, support feature completion, and drive non-functional requirements in a team focused on the 7750 Service Router.

The role involves developing software for Nokia's 7750 Service Router, focusing on application software, routing tables, and simulations.

The Senior Android Engineer will develop mission-critical Android applications for emergency responders, including UI design, hardware integration, and testing, with a focus on reliability under challenging conditions.

Design and scale distributed systems for Ditto's edge-to-cloud capabilities, lead services development in Rust, and mentor engineers.

The Senior Android Engineer will develop mission-critical Android applications for emergency responders, integrating hardware and ensuring reliability under real-world conditions. Responsibilities include UI design, native code integration, testing, and customer collaboration.

The Senior Software Engineer (Full Stack) designs, builds, and implements full-stack software solutions while mentoring other engineers and collaborating with cross-functional teams to deliver business value.