Top Software Engineer Jobs in St. Louis, MO

Lead architecture and implementation of new school safety products from concept through production. Design scalable, secure, resilient distributed systems and integration-heavy platforms involving APIs, identity systems, hardware, and external data sources. Drive technical strategy, mentor engineers, establish engineering standards, and collaborate with Product, Design, and engineering leaders to deliver reliable 0-to-1 products for schools.

Owns test automation and quality efforts for major product areas, including architecting automation frameworks, developing API, UI, and integration tests, and integrating testing into CI/CD pipelines. Leads test strategy, risk analysis, debugging, quality improvements, and release planning. Mentors junior SDETs, reviews test code, analyzes coverage, maintains quality metrics, and drives cross-functional adoption of testing best practices.

Design and develop scalable React front-end applications, reusable UI components, and accessible design-system foundations. Collaborate with product, UX, and backend teams on user-focused features and API integration. Define front-end architecture standards, optimize performance, maintain build and CI/CD pipelines, ensure code quality through testing and reviews, and mentor engineers. The role also supports responsive design, documentation, troubleshooting, and scalable state management and data-fetching practices.

Provides cross-team technical leadership by architecting scalable systems, leading design reviews, resolving complex technical issues, shipping production code, mentoring engineers, reducing technical debt, and translating business priorities into technical roadmaps. The role requires hands-on full-stack software development, AI-paired delivery, strong communication, and influence without formal authority.

Develops and maintains complex enterprise ERP solutions supporting HR, payroll, supply chain, finance, nurse scheduling, and information systems. Designs, enhances, implements, and supports Oracle ERP applications, contributes to business transformation initiatives, and may lead medium-sized project or work teams. Responsibilities include application lifecycle management, deployment, support, maintenance, and delivery of medium to complex development projects.

The Staff Software Engineer will architect and implement scalable data systems, collaborate with teams, mentor engineers, and ensure data integrity.

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.

Architects, develops, and operates scalable microservices and policy platforms for real-time decisioning. Designs evolving database schemas, versioned APIs, and high-throughput services; integrates deterministic enterprise rules engines; and applies AI-assisted engineering tools. Builds automated tests, observability, reliability, governance, auditability, and compliance capabilities. Collaborates with platform, data, and machine learning teams, participates in architecture reviews, mentors engineers, and establishes technical standards.

Build and own full-stack MarTech services, scalable APIs, event-driven systems, data pipelines, and customer-facing web experiences. Develop with Java, Spring Boot, TypeScript, React, and AWS while integrating advertising, analytics, messaging, and conversion platforms. Partner cross-functionally with marketing, product, data, design, and engineering teams to launch measurable growth features and experiments. The role also involves mentoring engineers, improving technical standards, and supporting high-scale acquisition and retention systems.

Leads cross-team software delivery and technical direction across Alkami’s digital banking platform. Designs scalable architectures, secure APIs, microservices, integrations, and data contracts; writes and reviews production code; improves reliability, performance, observability, testing, and CI/CD; manages technical dependencies and tradeoffs; mentors engineers; leads incident response and root-cause analysis; and partners with product, security, architecture, data, and site reliability teams.

Lead full-stack cloud engineering for SteelSeries’ gaming web and cloud platforms. Build scalable, reliable, high-availability services and user interfaces; evaluate and improve architecture; define APIs connecting hardware, applications, and cloud services; guide platform roadmaps; mentor engineers; promote strong testing, documentation, observability, resilience, and engineering best practices.

Build and maintain scalable full-stack cloud systems and web experiences for gamers. Design back-end and user-interface architectures, ship platform features, improve reliability and observability, and drive refactoring and technology adoption. Collaborate with hardware, software, design, and product teams while promoting testing, documentation, clean code, and knowledge sharing.

Build and lead scalable frontend products for Airbnb’s Community Support Engineering organization. Responsibilities include architecting web applications, developing reusable frontend components, designing supporting server-side APIs, implementing testing and experimentation, optimizing accessibility and performance, collaborating with product, design, machine learning, and generative AI teams, shaping technical direction, and mentoring junior engineers.

Design, build, and improve highly scalable, available payment systems supporting global transactions and payouts. Lead cross-functional technical initiatives, architect complex features, optimize performance, improve engineering quality and operational excellence, and mentor junior engineers. Drive technical strategy, align stakeholders, and collaborate with product, data science, operations, and other engineering teams.

Build and scale full-stack healthcare applications using TypeScript, React, and/or .NET on Azure. Design event-driven integrations, translate complex requirements into technical solutions, support production systems, and contribute to planning and design reviews. Lead through mentoring, code reviews, pairing, and technical problem-solving while delivering software predictably. Preferred experience includes healthcare applications, EHR and FHIR integrations, RPA, CI/CD, automated testing, and open-source contributions.

Build and operate product and technical initiatives across Boulevard’s event-driven platform, including scheduling, booking, marketing automation, and business tools. Partner with Product and Design, contribute to architecture, develop frontend or backend systems, maintain software quality through testing and observability, support production systems, mentor engineers, and improve delivery practices using AI-assisted development tools.

Lead design and implementation of high-throughput, low-latency programmatic bidding systems. Collaborate with ML engineers to deploy real-time inference, optimize distributed microservices, run experiments and quantitative analysis, and partner with product to ship scalable features. Foster operational excellence, mentor engineers, and continuously improve performance and reliability.

Architects and develops secure, high-performance distributed applications, APIs, microservices, and data pipelines on AWS. Leads application architecture, cloud infrastructure, data governance, testing automation, CI/CD, security, performance optimization, and technical modernization. Coordinates complex project lifecycles, manages risks and schedules, advises management, resolves cross-functional technology issues, documents systems, and mentors junior engineers in a financial services environment.

Design and build scalable distributed backend systems in Golang using PostgreSQL and Redis. Architect highly available services across microservices, networking, and cloud platforms; prototype and productionize platform capabilities and internal tooling; collaborate with CTO leadership on strategic initiatives; and influence engineering standards. The role focuses on greenfield AI infrastructure, developer tooling, performance, reliability, and systems operating at scale.

Build and maintain full-stack software products across frontend, backend, data, and AI layers. Own product architecture, deployment, observability, reliability, and maintenance; establish unified data models, secure access controls, AI guardrails, and engineering standards. Collaborate directly with non-engineering users to create self-service workflows and translate ambiguous needs into practical solutions. Ship production LLM-powered systems and support governed data transformation, quality, lineage, and testing.

Lead the design, development, testing, deployment, and optimization of scalable distributed applications and web services. Build Python/FastAPI backend services, ReactJS interfaces, and PostgreSQL data systems. Deploy and monitor cloud-native applications on GCP, collaborate on AI/ML integrations, contribute to architecture and SDLC practices, and mentor junior developers through code reviews and technical leadership.

Own complex trading-platform escalations from reproduction through permanent resolution. Build production fixes, internal admin tools, automation, and observability improvements using C#/.NET and React. Investigate distributed systems, database state, race conditions, and integrations; participate in on-call and production incident response; lead post-incident reviews; and collaborate with engineering, QA, Cloud Ops, Product, and support stakeholders.

Lead the technical vision and development of Elasticsearch’s core search infrastructure, including indexing, retrieval, query execution, and relevance. Research advances in search systems and algorithms, guide long-term technical roadmaps, collaborate across teams, mentor expert engineers, and contribute hands-on to high-performance distributed software. Serve as a subject-matter authority while driving projects from concept through completion.

Build, test, deploy, and maintain accounting software for transaction categorization, revenue recognition, and accurate financial reporting. Own projects end to end, create technical designs and rollout plans, conduct code reviews, collaborate cross-functionally, investigate production issues, improve reliability, and mentor teammates. The role involves working with typed Python, JavaScript, TypeScript, Vue.js, Terraform, AWS, and PostgreSQL in a remote environment.

Lead ambiguous, multi-team software projects for core accounting systems. Set technical direction, make architectural decisions, build and deploy reliable software, review technical specifications, investigate production issues, and improve system reliability. Collaborate with product and cross-functional stakeholders, mentor and sponsor engineers, and maintain high standards for clean, tested code. The role focuses on typed Python backend services, financial systems, integrations, and cloud infrastructure.