Top Software Engineer Jobs in St. Louis, MO

Design and build Airbnb’s big data compute platform supporting ETL, analytics, and machine learning. Operate and improve platform reliability, performance, observability, and cost efficiency. Develop maintainable code, conduct code reviews, contribute to open-source software, and design scalable distributed systems. Collaborate across teams to define requirements, troubleshoot complex infrastructure issues, and integrate solutions using technologies such as Spark, Trino, Kubernetes, Java, and Scala.

Own customer deployments of Sayari’s risk screening, graph analytics, investigation workflows, and data integrations. Responsibilities include technical scoping, production Python and SQL development, API integration, bulk data delivery, pipeline onboarding, dashboard creation, monitoring, troubleshooting, documentation, and feeding recurring customer needs back to engineering. The role requires client-facing communication, independent problem-solving, and collaboration across multiple customer accounts, with 25–30% travel and in-office time.

Lead WellTheory’s engineering organization as a player-coach, overseeing hiring, team development, technical direction, architecture, DevOps, reliability, compliance, AI-enabled development, and engineering processes. Partner with product and design on roadmap decisions while remaining hands-on in TypeScript and JavaScript codebases. Own engineering practices supporting HIPAA, SOC 2, and HITRUST requirements in a fully remote digital health company.

Develop and maintain flight software and embedded Linux systems for spacecraft and ground assets. Responsibilities include building command-and-control, telemetry, fault-recovery, and resource-management software; maintaining Yocto/OpenEmbedded environments; integrating hardware and distributed software interfaces; writing tests and documentation; participating in design and code reviews; and mentoring engineers. The role requires strong C/C++, embedded Linux, aerospace or mission-critical development, and experience with Zynq, Versal, or comparable platforms.

Build and maintain scalable JavaScript applications, API integrations, and open-source projects for global clients. Responsibilities include writing and reviewing code, debugging across frontend, backend, database, and network layers, optimizing performance, designing scalable architectures, handling concurrency, documenting technical work, and addressing edge cases. The role is fully remote and includes structured technical growth, peer feedback, and an assessment process involving an OSS hackweek.

Designs, implements, integrates, and optimizes scalable ServiceNow solutions for IT modernization. Leads architecture, custom application development, workflow optimization, data migration, performance improvements, testing, deployments, and troubleshooting. Provides technical leadership, mentors developers, documents systems, ensures security and compliance, and collaborates with technical and business stakeholders. Requires extensive ServiceNow expertise, platform certifications, security clearance, and experience with JavaScript, REST APIs, Agile, and DevOps practices.

Leads a small engineering pod building and operating Humana’s NBA orchestration platform. Designs durable Temporal workflows, Node.js/TypeScript services, Kafka event pipelines, transactional outbox processing, activation integrations, acknowledgment and reconciliation workflows, and distributed-systems reliability controls. Provides hands-on coding, architecture leadership, observability, operational support, cross-team coordination, mentoring, and delivery accountability across the member action lifecycle.

Develop, configure, test, document, and support MuleSoft integration capabilities using Anypoint Platform, APIs, DataWeave, connectors, policies, CloudHub, and CI/CD automation. Build secure API-led integrations and reusable services, troubleshoot platform and data issues, support releases and architecture activities, and maintain technical documentation and operational procedures. Collaborate with government stakeholders, cybersecurity, infrastructure, QA, product, and operations teams to deliver reliable and compliant enterprise services.

Leads day-to-day engineering execution for a lean, senior team while remaining hands-on with production code, architecture, incident response, and AI-assisted development. Owns delivery, quality, reliability, security, cloud costs, automation, and technical standards across multi-tenant SaaS platforms on AWS and Azure with Kubernetes. Partners with Product, Design, Support, and the CTO to build AI features, improve engineering productivity, hire and develop talent, and maintain predictable delivery.

Lead development of production-grade Flutter and Dart mobile applications, including shared offline capabilities, local persistence, background synchronization, conflict resolution, data-age safeguards, and reliability testing. Provide technical leadership through code reviews, troubleshooting, mentoring, and collaboration while leveraging AI tools such as Claude and Claude Code. Ensure performance and compatibility across devices and operating systems and oversee delivery of scalable, maintainable mobile solutions.