Top Software Engineer Jobs in St. Louis, MO

Build and deliver features for Sardine’s internal and client-facing dashboards, collaborating with stakeholders from implementation through delivery. The intern will enhance employee productivity, maintain high standards for testing, documentation, security, privacy, and compliance, and apply an empathetic, customer-centric approach. The internship requires at least 20 hours weekly for a minimum of three months and is remote within the United States or Canada.

Designs, builds, secures, and governs RESTful and GraphQL APIs supporting member, chapter, and agentic AI ecosystems. Owns API lifecycle management, semantic data models, versioning, testing, documentation, observability, CI/CD, and infrastructure as code. Implements serverless, event-driven AWS architectures with strong IAM, privacy, consent, and explainability controls. Collaborates across Product, Data Architecture, IT, Security, and ML teams to deliver reliable, scalable, secure, and governed APIs.

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.

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.

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.

Senior engineer responsible for designing, building, and operating scalable data ingestion, processing, storage, and member-facing membership application. Drive architecture decisions, mentor engineers, build data pipelines, APIs, and ensure reliability, observability, CI/CD, and documentation while partnering with product and analytics stakeholders.

Refine, stabilize, and enhance a Google Docs add-on including Apps Script refactoring, OAuth2 and REST API integration, retry and sync logic, UI improvements, end-to-end testing, and preparing the add-on for Google Workspace Marketplace publication and security review.