Top Software Engineer Jobs in St. Louis, MO

The Software Engineer will develop the Socket web application, design interfaces, write APIs, and contribute to team growth and culture. Responsibilities include building systems and collaborating with design and engineering teams to ensure a delightful user experience.

As a Software Engineer at Espresso, you will design and implement core blockchain infrastructure in Rust, focusing on transaction processing and consensus.

As a Senior Software Engineer in Infrastructure, you'll manage GPU and cloud infrastructure, ensuring stability and enhancing developer experience in a fast-paced environment.

As a Software Engineer - Support, you'll troubleshoot production issues, implement fixes, and collaborate with teams to enhance web platforms. You will also define backlog tickets and contribute to improving incident response processes.

As a Backend Software Developer, you'll design and implement microservices, model data in MongoDB, and ensure systems' reliability and performance. You'll work with AI capabilities and partner integrations, emphasizing CI/CD and observability.

Design and maintain high-quality software solutions for an eCommerce platform, focusing on back-end systems and collaborating with various teams.

As an iOS Software Engineer, you will develop and improve Nextdoor's iOS applications, collaborating with teams to enhance product features and usability while mentoring team members.

Design and build applications using Python, manage component design, optimize performance, and collaborate with clients on innovative products.

As a Software Engineer, you will design and build web applications using Python, develop APIs with FastAPI, and work on AI systems and data pipelines, collaborating with teams across projects.

The Software Engineer will build scalable backend systems, integrate third party software, and optimize performance, aiming to enhance efficiency in the moving industry.

Design, build, and operate reliable and scalable systems to support Anrok's product, focusing on technical debt, security, and performance optimization.

The Cloud Software Engineer will design and operate distributed systems for ClickHouse's Observability platform, ensuring reliability and efficiency while working with various engineering and infrastructure teams.

Develop and maintain ClickHouse Cloud interfaces and dashboards, collaborating with multi-disciplinary teams to enhance user experience and system reliability.

Lead development of Windows desktop applications, define best practices, ensure accessibility, collaborate on features, and maintain quality across releases.

Develop and deploy onboard swarm autonomy: perception, planning, control, multi-target tracking, inter-robot/C2 protocols, on-vehicle software integration, realistic UxS simulation, train and test ML-based target recognition, and electronics prototyping. Travel for test events up to 25%.

Build and maintain Wikimedia editing features (primarily VisualEditor). Fix bugs, implement new functionality, collaborate with cross-functional teams, write multilingual accessible performant code in JavaScript and PHP, instrument components, and work within the MediaWiki API ecosystem. Contribute tests and use version control in a distributed, open-source environment.

Develop and enhance infrastructure using Rust and C++, ensuring high-performance applications with a focus on memory safety and concurrency.

Design and implement complex software solutions for the FedNow service. Lead projects, develop cloud applications, and provide production support while ensuring compliance and quality.

Design and build responsive, high-performance front-end web applications for mission-critical geospatial systems. Collaborate with designers and backend engineers, develop/maintain APIs and CI/CD pipelines, ensure performance, security, and scalability, participate in code reviews, and support production systems.

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.

As a Senior Software Engineer on the Data Platform team, you'll enhance the data infrastructure, develop ETL pipelines, maintain data quality, collaborate across teams, and mentor junior engineers.

Design, build, deploy, and maintain large-scale enterprise Windows desktop environments (virtual and physical). Integrate Windows desktops with enterprise services, create design and deployment documentation, manage upgrades, package and deploy client software, and provide O&M support across globally dispersed sites.

Design, build, test, and deploy production software for an agentic chatbot platform across intake, orchestration, retrieval, answer generation, caching, and integrations. Deliver clean code, participate in sprint work, review merge requests, collaborate with product and architecture, mentor junior engineers, and contribute to design and delivery decisions to solve conversational AI problems within a benefits ecosystem.

The Software Engineer will manage data collection, operate cloud infrastructure, and collaborate with scientists to enhance AI models at Speechify.