Top Software Engineer Jobs in St. Louis, MO

The C# Developer will enhance and develop applications across various tiers, requiring strong analysis, design skills and proficiency in C# and .NET environments.

The Big Data Architect will design and implement solutions using IBM Big Insights and troubleshoot related technologies while coordinating travel to Toronto monthly.

Lead design and delivery of enterprise Adobe Experience Platform solutions. Architect schemas, identity, ingestion, governance, personalization, and integrations with CRM/data lakes. Optimize CI/CD and deployment processes, mentor engineering teams, coordinate cross‑functional stakeholders, ensure security/privacy compliance, and produce architecture documentation and implementation roadmaps.

Lead and scale a Support Engineering function for Ashby across the Americas. Own vision, operating model, escalation/triage standards, reporting, tooling, and cross-functional feedback with Product and Engineering. Manage a Support Engineering Manager, drive hiring and career paths, and use data to reduce recurring technical friction while balancing immediate customer resolution with durable product improvements.

Design, build, and deploy secure, high-performance, scalable cloud-native applications supporting Ariba P2P. Work full-stack in Java using Spring Boot and the SAP BTP Cloud Foundry CAP (Java) model, applying resiliency, security, and performance best practices.

Design, develop, and maintain scalable backend services in Golang. Build and consume REST APIs and microservices in cloud environments, collaborate with cross-functional teams, debug and optimize performance, and participate in code reviews and best-practice adoption.

Design, develop, and enhance custom SAP Fiori/UI5 applications; configure Fiori Launchpad; integrate OData services; perform UI debugging, performance optimization, code reviews, unit testing, and documentation while collaborating with backend and functional teams.

The Full Stack Engineer will design, build, and maintain scalable web applications, impact customer onboarding and integrations, write and review code, and support technical improvements.

Lead design, build, and operation of Marriott's enterprise GraphQL platform. Drive platform strategy, reliability, security, observability, CI/CD, and cloud-native architecture. Manage application development teams, vendor relationships, SDLC processes, and continuous improvement for scalable, mission-critical API delivery.

Lead technical design, configuration, implementation and optimization of Oracle RTR and ATR lifecycle across Fusion and EBS modules (GL, AP, FA, Lease Accounting, Accounting Hub). Translate business requirements into functional/technical designs, manage integrations, data migrations from PeopleSoft, testing, CI/CD and post-go-live support. Mentor teams, ensure compliance (SOX/ITGC), monitor environments, and deliver training and documentation.

Lead design and implementation of iOS applications, mentor engineers, coordinate with vendors and operations, ensure delivery within scope/time/budget, and apply modern iOS practices (testing, CI/CD, analytics, async concurrency) to maintain high-quality production apps.

Build and maintain secure, compliant software for a CDC disease surveillance platform. Partner directly with health departments during onboarding, migration, and troubleshooting; diagnose product gaps and configuration issues; develop scripts, integrations, and configurations without forking the core platform; collaborate with platform, data, and epidemiology teams; and identify recurring jurisdiction needs for future product features.

Build polished consumer-facing web and mobile experiences, primarily developing React Native features while maintaining native iOS and Android applications. Collaborate with product and design to turn feedback into shippable improvements. Work across APIs, native integrations, analytics, media, debugging, and existing Swift and Kotlin codebases. Develop with React, TypeScript, Next.js, and modern web technologies while addressing real-device performance, navigation, gestures, responsiveness, and platform-specific issues.

Own and ship polished web, iOS, and Android user experiences. Build and debug native and web UIs, integrate APIs and analytics, collaborate with product/design, and iterate quickly on high-quality, media-heavy features with strong UX focus.

Lead and architect scalable web systems, mentor frontend and backend developers, define coding standards and roadmaps, drive implementations using React/Next/Node/NestJS, produce technical documentation, conduct code reviews, and collaborate with product and DevOps to deliver secure, maintainable solutions.