Top Software Engineer Jobs in St. Louis, MO

Lead architecture and implementation of new school-safety products from concept to production. Design scalable, secure, and resilient distributed systems; build third-party and device integrations; collaborate with product and design; mentor engineers; and prioritize operational reliability, privacy, and compliance.

Lead company-wide transformation of test automation and quality engineering: define vision and roadmap, architect scalable testing frameworks across server/web/mobile/desktop, integrate AI/LLM for test generation and flakiness management, establish observability and quality gates, mentor engineers, and partner with leadership to embed quality across the SDLC.

Design, develop, and deliver scalable backend systems and components using .NET 10 and C#. Build and maintain databases and messaging infrastructure (PostgreSQL/SQL Server, RabbitMQ), deploy with Docker and AWS, apply DDD and ORMs, triage/prioritize work, and contribute to distributed, event-driven architecture with emphasis on reliability and idempotency.

As a Senior Full Stack Engineer, you'll enhance pharmacy services, optimize prescription workflows, mentor engineers, and solve technical challenges in healthcare.

Develop and manage control plane services for Flink, focusing on orchestration and reliability. Responsibilities include code quality, mentoring, and communication across teams.

Lead the architecture of Commerce Hub by defining core domain models, building intricate systems, and mentoring engineers while influencing product strategy.

As a Senior Software Engineer, you'll optimize distributed databases, focus on query efficiency, and collaborate on SpiceDB features, enhancing performance and reliability.

As a Senior Software Engineer, you will collaborate with teams to build tools enhancing healthcare, drive business outcomes, and adopt AI in development.

Lead the development of a search and data integration platform, ensuring architecture, integration, and delivery of complex software systems in a safety-focused environment.

As a Senior Software Engineer on the Identity team, you will enhance systems that process billions of events, ensuring performance and stability. Collaborate with teams to design algorithms for user identity, manage data quality, and improve capture accuracy.

As a Senior Software Engineer, you will create human-in-the-loop and fan-in-the-loop interfaces for AI-driven sports statistics, collaborating with teams to integrate AI models and build dynamic fan experiences across platforms.

The Senior Software Engineer will develop full stack software using Typescript, MySQL, React, and Next.js, oversee features from conception to production, and collaborate across teams at Ethena.

The role involves designing and developing full-stack features using Angular and Java/Spring Boot, building scalable services, and optimizing system performance. Responsibilities include API design, technical documentation, and collaboration with engineering teams.

Develop and maintain data lake platforms, write reliable code for data pipelines, and collaborate with senior engineers on design and architecture.

Lead design, development, and support of enterprise backend integrations. Build and enhance REST and SOAP APIs, evolve data/service models, develop scalable integration components, troubleshoot production issues, influence architecture, mentor engineers, perform design/code reviews, and collaborate with vendors and cross-functional teams to deliver reliable integrations.

Design, develop, and maintain scalable Python applications; collaborate with cross-functional teams to deliver features; ensure performance and quality; identify and fix bugs; maintain code quality and automation; lead and mentor team members using agile practices.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

Architect, build, and maintain scalable full‑stack applications using React, TypeScript, Node.js, and AWS. Own features end-to-end, optimize performance and usability, collaborate with founders, and use AI tools to accelerate development in a fast-paced startup.

Build polished, maintainable React-based front-end product experiences; evolve front-end architecture and component patterns; translate ambiguous product ideas into executable plans; collaborate with product and design; prioritize UX quality, testing, and pragmatic tradeoffs; mentor and raise team effectiveness at the Staff level.

Design, build, and operate end-to-end backend services, APIs, and web applications. Own features from design through production, maintain integrations, improve CI/CD and observability, troubleshoot full-stack incidents, participate in on-call rotation, and raise engineering standards.

Lead design and implementation of batch and stream loading systems to ingest terabytes daily. Provide technical leadership on the Streamloader team, collaborate with architects, engineers, product, sales, and customers, and develop high-performance distributed software in C++ and/or Java while ensuring system reliability and customer success.

Design and implement backend APIs and performant database schemas (Postgres/SQL); build scalable, testable C# services; work in Agile cross-functional squads; incorporate AI-assisted development tools; and drive engineering maturity and efficiency.

Build and ship production frontend features using modern web technologies (Vue.js/TypeScript). Collaborate with product in a cross-functional squad to iterate UX, deliver secure, stable code, and create reusable, testable components. Operate in an AI-first workflow using agentic tools, participate in Git-based development, and apply basic AWS services to solve business problems.

Lead end-to-end design, development, and quality of cloud-based enterprise software solutions for caregivers. Define quality criteria, estimate costs, manage risks and engineering processes, integrate systems, and act as technical leader across large, complex projects.

Lead Platform Engineer to design and evolve Subaru.com using Java, AEM, and AWS. Lead architecture and technical delivery, mentor teams, run design and code reviews, enforce quality, and build scalable web applications and services integrating front-end, mobile, and third-party clients.