Top Software Engineer Jobs in St. Louis, MO

The Backend Software Engineer will develop and maintain backend systems for data processing related to coffee farming, utilizing Python and PostgreSQL. Responsibilities include feature development, problem-solving, and adapting systems to regulatory changes while ensuring system resilience.

Develop and enhance software solutions for mineral exploration, collaborating with geologists and data scientists, and driving insights from data systems.

Build and maintain resilient backend services and APIs for fraud detection, identity verification, and transaction monitoring. Integrate third-party risk/compliance platforms, partner with product and engineering teams, contribute to architecture decisions, and produce documentation to ensure secure, reliable systems at scale.

Join Galaxy Ventures' Talent Network for Software Engineer roles. Connect with crypto portfolio companies for career opportunities and networking events.

The Mid-level Software Developer will design, develop, and enhance software applications, focusing on data integration and cloud environments, particularly using Python and SQL.

Join Supabase as a Software Engineer to own the Terraform provider, improving reliability, driving technical strategy, and creating documentation for seamless IaC workflows.

The Software Engineer, Backend Engineer will develop, automate, and maintain core functionalities for Rescale customers, focusing on backend systems and cloud services.

Design, build, and maintain scalable end-to-end systems and APIs/SDKs for an enterprise custody platform. Work full-stack across databases, cloud deployments, CI/CD, and security; troubleshoot issues, integrate emerging technologies, and mentor junior engineers.

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

Design, develop, customize and integrate Microsoft Dynamics 365 CRM/CE solutions. Build entities, forms, workflows, plugins, reports and dashboards using CRM SDK, C#, JavaScript, ASP.NET and SQL. Troubleshoot issues, estimate implementation approaches, collaborate with stakeholders, document solutions, and mentor junior developers. Banking domain experience preferred.

The Software Engineer, Platform will design and develop backend APIs, ensure scalability, collaborate on B2B solutions, and support cross-functional teams.

We are seeking a software engineer to build and validate resilient distributed systems, enhance CI pipelines, and improve testing strategies for cloud applications.

The Web3 / Full-stack Software Engineer will design, develop, and deploy software solutions for staking products, collaborating with engineers and UX designers to enhance UI and ensure security of blockchain networks.

Design, build, and operate Tailscale's global Funnel and DERP relay infrastructure. Improve networking features and dataplane in open-source client code, ensure scalability and reliability with SRE/DevOps practices, troubleshoot complex network issues, integrate observability and incident response, and collaborate across engineering and product teams with a security-first approach.

Design, develop, test, and maintain desktop and web applications that control automated saw machinery. Integrate software with electrical and mechanical systems, refactor for performance and reliability, participate in code reviews, and use AI-assisted and Agile development practices to deliver maintainable, production-quality solutions.

As a Founding Software Engineer, you'll design, develop, and maintain robust backend systems, create user-facing AI features, and collaborate with teams to enhance healthcare tools.

Design, build, and operate Kubernetes-based compute orchestration and developer tooling. Deliver new compute capabilities, automate operations and observability, integrate AI into workflows, and partner with Security and Reliability to ensure platform scalability, performance, and incident response.

Design, scope, prototype, and deliver backend and full-stack features for the Retail Grocery platform. Make technical decisions, deploy AI-native experiences, engage directly with customers and iterate quickly to meet retail needs.

Build and maintain scalable Revenue Cycle Management platforms and internal tooling supporting payments, claims submission, and operational workflows. Design and implement distributed, secure systems, improve reliability and cost-effectiveness, collaborate with engineering, operations, and business stakeholders, lead technical projects, mentor peers, and participate in on-call incident resolution.

Lead Engineer responsible for end-to-end feature design, development, testing, and delivery of a cloud-based healthcare platform. Work full stack from database to frontend, design scalable data services and APIs, mentor junior engineers, ensure testing and security best practices, and deploy to modern cloud infrastructure.

Lead the design and evolution of predictive maintenance platform, build and scale ML-powered features, and mentor other engineers.

Lead full‑stack development and architecture for Spark’s broker platform. Deliver customer‑facing features, partner with product/design, mentor engineers, resolve technical debt, and set engineering standards while using AI developer tools.

As a Senior Software Engineer, you'll develop and build tools for creative projects while leading feature development and collaborating with teammates.

Design, build, and operate backend systems for prediction markets, including order management, trade matching, settlement, and market resolution. Architect distributed, low-latency systems with strict financial correctness, lead multi-quarter technical projects, mentor engineers, and collaborate with Product, Compliance, and Risk to meet regulatory requirements.

Own architecture and delivery of core ledger and transaction processing systems. Design and build highly available, high-performance backend services, drive cross-team technical initiatives, establish platform standards, mentor engineers, and embed AI to improve operations and workflows.