Top Software Engineer Jobs in St. Louis, MO

Design, architect, and implement cloud-first full-stack software using Java/C# and JavaScript frameworks. Provide technical leadership, mentor engineers, improve architecture and performance, promote CI and automated testing, and support customer implementation and cloud platform operations.

Build and maintain the company website, client-facing portal, and internal web apps. Design and structure web pages, implement UI enhancements, optimize performance and scalability, collaborate with backend engineers (Go), ensure brand-consistent design, and mentor teammates to drive product excellence.

Lead architecture and delivery of enterprise Salesforce B2B Commerce solutions. Advise on requirements, integrations (ERP/OMS/payments), data modeling, APIs, and system design. Oversee quality, governance, pre-sales solutioning, and distributed teams to drive scalable B2B commerce experiences and platform ROI.

Lead design, build, and operation of AI-powered product features across backend, frontend, and AI systems. Make architecture decisions, drive production deployments, improve code quality and reliability, mentor engineers, and own features end-to-end.

Lead and grow a multidisciplinary engineering team across full-stack, data engineering, and BI. Own people management, technical direction (C#/.NET, SQL, Vue 3, Power BI), data pipeline reliability, roadmap delivery, cross-functional collaboration, and engineering best practices to improve velocity, quality, and health outcomes.

Build and ship full-stack features for an AI-powered onboarding platform: design UIs, embeddable components, workflow automations, a compliance rules engine, internationalization, and third-party API integrations while ensuring testability and observability.

Founding engineering role to architect and build core backend platform components. Design and implement scalable, distributed Java/JVM systems, apply solid testing and CI/CD practices, collaborate with CEO/CTO, and work in an agile early-stage fintech startup environment.

Own and evolve the front-end architecture for a high-throughput, real-time trading app using Next.js, React, and TypeScript. Build pixel-accurate, accessible, responsive UIs under strict performance budgets; optimize rendering, state management, data flow, and bundle size for sub-second interactions. Integrate with REST and WebSocket APIs, lead end-to-end feature development, set engineering standards, mentor engineers, and contribute across the stack when needed.

This is a general application for technical positions, inviting candidates to submit their CVs for potential job opportunities.

As an iOS Engineer, you'll design and implement the mobile app's upload flows, optimize performance, and collaborate with backend and ML teams on features.