Top Senior Software Engineer Jobs in St. Louis, MO

Develop and support full-stack enterprise applications for legal operations, matter management, document management, compliance, and business process automation. Build React frontends, Java and Spring Boot microservices, REST APIs, event-driven integrations, and cloud-native solutions. Work with databases, Docker, Kubernetes, Azure, AWS, CI/CD, monitoring, security, production support, and Agile delivery while collaborating with legal, compliance, product, architecture, and engineering teams.

Build and scale backend-focused systems supporting truckload freight operations, including high-volume carrier quotes, automated transactions, distributed services, and APIs. Design scalable data models and architectures, contribute across the React and TypeScript stack, make key technical decisions, mentor engineers, and collaborate with product leadership. The role also involves developing AI-powered logistics tools and maintaining reliable, secure infrastructure on Kubernetes and GCP.

Build and maintain full-stack web applications, interactive dashboards, backend integration services, resilient APIs, and data visualizations. Integrate relational and NoSQL databases, DevOps automation, cloud platforms, and AI capabilities. Troubleshoot application, database, file transfer, connectivity, security, and hybrid-cloud issues while improving continuous delivery practices. Support payer operations by enriching metadata, automating lifecycle contracts, and measuring payer performance in an agile, collaborative environment.

Design, deliver, and operate business-critical distributed systems for Signify Health’s value-based care technology platform. The role requires full-stack development, polyglot programming, scalable distributed-systems expertise, cloud engineering, SQL and relational database knowledge, and strong communication. Preferred experience includes event-driven architectures, AI-assisted development tools, Kafka, APIs, containers, Kubernetes, infrastructure as code, monitoring, CI/CD, and agile methods. Quarterly or as-needed travel is required.

Build and operate an agentic SOC investigation platform using LLMs, including telemetry tools, investigation workflows, evidence-backed outputs, evaluation systems, and analyst productivity features. Develop secure, reliable, observable backend services that handle attacker-influenced data across customer environments. Collaborate with SOC analysts, researchers, technical leads, and product managers to translate investigative expertise into production agent behavior.

Join a small engineering team as a hands-on full stack developer. Accelerate frontend delivery, then take on backend services, infrastructure, and core capabilities. Own features from design through release and operational stability, collaborate with customer-facing engineers and founders, and promote effective AI-assisted development practices. The role requires strong backend-oriented full stack skills, product-launch experience, system design judgment, self-direction, and periodic travel to a California office.

Own the end-to-end development of a secure SMS Adapter connecting retail and grocery store systems, beginning with BRdata, to Ottimate’s AP platform. Responsibilities include sync architecture, retries, conflict handling, local credential security, monitoring, testing, packaging, updates, installation, and deployment on Windows machines. The engineer will work directly with pilot customers to troubleshoot network, permissions, and data-access issues while evolving data models and integrations for additional store systems.

Own and evolve cloud infrastructure, internal developer tooling, release automation, preview environments, and reliability practices. Build reusable libraries and SDKs, improve monitoring and tracing, manage SLOs and incident response, and solve scaling challenges across data and compute systems. The role requires strong AWS, Terraform or Pulumi, TypeScript and Node.js knowledge, startup infrastructure experience, and clear technical documentation.

Build scalable Golang microservices, APIs, and data-centric systems supporting eligibility, coverage, billing, client workflows, and healthcare operations. Automate manual processes, develop self-service tools, ensure data accuracy and traceability, and collaborate with data and AI teams on validation, automation, and anomaly detection. The role requires production backend experience, event-based architectures, cloud platforms, and strong stakeholder communication.

Own backend and product delivery from scoping through production. Design customer-facing backend services, AI agent capabilities, APIs, data models, and system architecture for large unstructured datasets. Lead high-impact technical initiatives independently, maintain engineering quality, shape product direction with founders, and translate customer needs into dependable software. The role requires advanced Python, production-scale backend experience, system design expertise, and a product-minded approach.

Design, build, and operate MongoDB Atlas features and distributed backend systems, with a focus on encryption, compliance, customer-managed keys, and cloud security across AWS, Azure, and GCP. Lead complex technical projects and fleet-wide production rollouts, collaborate with product, design, customers, and support teams, mentor engineers, resolve production issues, and participate in on-call support.

Design and deliver scalable, secure software systems for Bankrate’s digital products. Responsibilities include shaping architecture, developing APIs and cloud services, optimizing CI/CD pipelines, partnering with product and design, delivering large initiatives independently, resolving cross-team technical issues, mentoring engineers, improving engineering standards, and evaluating tools that enhance reliability, performance, and team productivity.

Lead the design, development, and delivery of scalable payroll onboarding software. Drive technically complex initiatives, influence architecture and roadmaps, collaborate across product, design, and engineering, improve reliability, promote coding best practices, mentor engineers, and use AI tools to enhance development productivity.

Leads technical initiatives for Toast’s restaurant scheduling product, designing and delivering scalable full-stack software. Responsibilities include architecture, API and system design, roadmap influence, cross-functional collaboration, engineering quality, performance, and technical leadership. The role also promotes AI-assisted development and improved employee and customer experiences.

Build and maintain backend services and metadata pipelines supporting data discovery, governance, and AI/ML workflows. Responsibilities include integrating relational databases, developing Java, Node.js, and Python services, optimizing distributed pipelines, implementing Terraform infrastructure, supporting GitLab CI/CD, and writing comprehensive tests. The role also involves troubleshooting scalability and reliability issues, designing asynchronous workflows, and collaborating on modern data lake, search, metadata, and LLM-enabled technologies.

Leads the design, development, modernization, and architecture of large-scale healthcare platforms using Java, Spring Boot, cloud technologies, microservices, and APIs. The role drives technical decisions, performance, scalability, security, code quality, and modern engineering practices. Responsibilities include mentoring engineers, conducting code reviews, collaborating across product, architecture, security, and operations teams, and delivering resilient applications. Preferred experience includes generative AI, full-stack development, GraphQL, Node.js, TypeScript, and modern databases.

Design, develop, and operate secure, highly available backend microservices and healthcare data integrations using Java, Spring Boot, Kafka, and GCP. Build REST APIs, CI/CD pipelines, observability, and infrastructure-as-code while ensuring HIPAA compliance and production reliability. Partner with product, architecture, security, and DevOps teams; troubleshoot incidents, drive reliability improvements, participate in design and code reviews, and mentor engineers.

Build and operate scalable data pipelines, backend services, APIs, and infrastructure powering AI-driven healthcare applications. Design distributed data systems, ETL workflows, streaming platforms, and cloud-native architectures while partnering with AI, machine learning, and product teams. Own production reliability, observability, security, automation, and on-call support for business-critical systems.

Design, develop, test, and maintain scalable platform software and services. Collaborate with architecture and cross-functional teams, implement platform features, participate in code reviews, document technical specifications, troubleshoot issues, and optimize performance and scalability. The role requires Go development, scripting, Kubernetes, cloud-native technologies, containerization, cloud networking, and CI/CD experience.

Designs, develops, tests, deploys, operates, and maintains scalable full-stack software products. Builds React-based enterprise applications, writes production-ready code, performs code reviews, improves reliability and performance, integrates APIs, and follows security, compliance, accessibility, and DevOps practices. Collaborates across teams using agile methods, analyzes failures, prioritizes work, and contributes to technology transformation and continuous improvement.

Develops, enhances, tests, debugs, deploys, and supports enterprise mainframe applications using COBOL, IDMS, DB2, and related technologies. Troubleshoots production issues, collaborates with end users to define requirements, ensures performance and security, applies Agile practices, and mentors junior developers. The role supports remote personnel serving a Kansas City, Kansas customer and requires the ability to obtain and maintain Public Trust clearance.

Build and maintain secure, scalable backend systems for Mindbody products. Design microservices, write tested and maintainable code, monitor applications, participate in reviews, and collaborate with Product, Design, QA, and Engineering teams. The description also includes leadership responsibilities such as managing backend development teams, coaching managers and engineers, establishing delivery processes, and driving technical and organizational improvement.

Build and maintain Python services, REST APIs, batch jobs, shared libraries, claims workflows, and internal applications. Develop maintainable, unit-tested code; write SQL for MySQL databases; participate in design, code review, deployment, and production support; and collaborate across departments. The role also involves handling sensitive healthcare data, using AI-assisted development tools responsibly, and working in a regulated pharmacy benefits domain.

Lead and contribute to the design, development, and delivery of scalable enterprise software platforms. Responsibilities include creating proofs of concept, designing microservices and APIs, optimizing performance, participating in architecture discussions and code reviews, supporting CI/CD automation, resolving complex issues, mentoring developers, and collaborating with business and technology leaders. The role also applies cloud, Generative AI, and Agentic AI capabilities to digital healthcare products.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.