Top Senior Software Engineer Jobs in St. Louis, MO

Design and build systems for managing bare-metal infrastructure, focusing on automation, hardware provisioning, and software integration with Linux systems.

Design, develop, and maintain mobile applications in Kotlin, ensuring healthcare compliance, collaborating with teams, and mentoring others.

Build and maintain backend cloud services for connected devices, focusing on telemetry ingest, device state management, command/control, and integrations. Own features from design through production, use AI-native engineering practices, collaborate with firmware/mobile/platform teams, write and test reliable code, participate in on-call rotations, and contribute to incident response and documentation.

Design and implement scalable full-stack healthcare software: build APIs, data services, and SPAs; prototype new capabilities; ensure compliance (HIPAA/HITRUST); use cloud, IaC, CI/CD, and containers; collaborate with product and architecture; and mentor engineering peers.

Design, build, and maintain data platform tools, ensuring data quality and integrity. Collaborate with data science teams and enforce best software practices.

Design, build, and maintain scalable, concurrent backend services in Go for autonomous platforms. Drive architecture, performance optimization, reliability, and secure development. Collaborate cross-functionally, set engineering standards, conduct code reviews, and ensure production readiness in containerized/Kubernetes environments.

Design, build, and deliver cloud-native software enhancements for investor and tax applications. Develop microservices on AWS/Kubernetes, implement CI/CD and TDD practices, integrate messaging systems like Kafka, debug relational databases, and collaborate with DevOps and stakeholders to improve scalability, resiliency, automation, and cross-team initiatives.

As a Software Engineer for the ARC team, you'll design and implement secure backend systems, manage model inference layers, improve engineering standards, and collaborate with teams to meet government agency needs.

As a Software Engineer in Frontier AI Infrastructure, you'll design secure systems for the public sector, improve engineering standards, and collaborate with cross-functional teams to meet government requirements. You'll also participate in customer engagements and contribute to the product strategy while ensuring compliance with federal regulations.

The Senior Software Engineer at Order.co designs complex features end-to-end, mentors junior engineers, and participates in design reviews while ensuring quality and reliability of systems.

As a Staff Software Engineer Tech Lead, you will lead technical efforts for the POS app, mentor engineers, solve strategic challenges, and enhance development with AI tools.

As a Staff Software Engineer, you'll design and operate traffic infrastructure, lead multi-team projects, ensure service reliability, and mentor engineers while utilizing AI tools for development efficiency.

The Senior Software Engineer, Mobile DevOps focuses on enhancing the POS app's development processes, optimizing build speeds, and mentoring team members, ensuring high-quality output using AI tools.

Design and develop backend services and APIs for identity resolution, optimize event-driven systems, and enhance system reliability. Mentor engineers and influence architectural decisions.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

Design and develop software solutions enhancing user experience for Governance features, contribute to open-source software, communicate technical designs, and support team quality through reviews.

The Senior Staff Software Engineer will architect Affirm's lakehouse analytics platform, lead data governance efforts, mentor engineers, and collaborate across teams to optimize data solutions using Snowflake and other big data tools.

The role involves building core infrastructure for orchestrating intelligent agents, defining platform primitives, and ensuring systems scale and reliability. Collaboration with internal teams and end-to-end system ownership are essential.

Design, develop, test, and maintain software for the Tomahawk program, translating customer requirements and ensuring product reliability. Requires 5+ years experience in .NET and SQL, with a Secret clearance.

We are seeking a Senior Frontend Software Engineer to build advanced web applications using JavaScript and ReactJS, collaborating with a team to enhance user experiences.

The Senior Backend Software Engineer will build intricate backend systems, develop APIs, ensure high availability, and improve application scalability and performance.

Lead and manage software engineering teams, architect scalable systems, and innovate solutions while collaborating with stakeholders across various technology stacks.

The Software Engineer will develop the Socket web application, design interfaces, write APIs, and contribute to team growth and culture. Responsibilities include building systems and collaborating with design and engineering teams to ensure a delightful user experience.

As a Senior Software Engineer in Infrastructure, you'll manage GPU and cloud infrastructure, ensuring stability and enhancing developer experience in a fast-paced environment.

The Software Engineer III/Senior will maintain and evolve billing systems, build event tracking pipelines, manage customer-visible insights, and ensure data integrity for billing related to customer usage.