Top Software Engineer Jobs in St. Louis, MO

As a Software Engineer, you will build and maintain a native advertising platform, collaborating with teams to enhance user interfaces and improve ad campaign effectiveness.

Manage clusters, develop with Golang, provision infrastructure with Terraform, and enhance performance of the platform handling untrusted code.

As a Software Engineer II in the Credit Decisioning team, you will design and develop backend systems, collaborate with cross-functional teams, and support project delivery and operations.

As a Senior Software Engineer, you'll build and enhance Collectly's healthcare financial products using Python and potentially React, focusing on backend systems and user-facing features.

The Principal Software Engineer will define technical roadmaps, guide system architecture, mentor leaders, and drive product direction in Capital Supply operations.

As a Senior iOS Engineer at Babylist, you will enhance the iOS app that supports new families by building user-centered features, collaborating across teams, and optimizing app performance. You will apply AI to improve development speed, mentor peers, and drive architectural decisions.

As a Fullstack Staff Software Engineer at Babylist, you will lead projects in health technology, mentor team members, and drive impactful decisions using AI and modern tech stacks.

Design, build, test, and roll out backend features for Toast's payments platform. Deliver scalable, secure APIs, collaborate with PM/UX and cross-functional teams, implement automated tests, monitor releases, and participate in design and code reviews.

The Senior Software Engineer will build scalable payment systems, manage backend services, collaborate cross-functionally, and mentor teammates within a dynamic financial tech environment.

The Staff Software Engineer will architect backend systems, collaborate with data scientists, and mentor engineers while handling complex, distributed systems and APIs.

Join the MongoDB Server Query Optimization team to build a distributed open-source query optimizer, focusing on enhancing query performance and robustness. Responsibilities include innovation in flexible schema databases, mentoring team members, and contributing to the technical roadmap based on extensive experience in the database domain.

As a Senior Principal Engineer, you'll define and drive the technical strategy for customer experience platforms, lead architectural decisions, and mentor engineering teams to enhance customer and agent experiences.

Responsible for building new products, updating existing offerings, leading projects, mentoring, and ensuring quality and alignment in technical implementation. Collaborate with teams to drive projects from ideation to production.

As a Senior Software Engineer at Babylist, you will develop systems for a high-volume marketplace, collaborating on advertising, commerce features, and infrastructure while leading projects and improving processes with AI-driven methodologies.

The role involves owning the architecture and technical direction of Payment Rails infrastructure, designing high-reliability systems for global payment processing, and leading cross-functional collaborations to create efficient, compliant solutions. Responsibilities also include mentoring team members and enhancing operational excellence through AI-driven improvements.

Build and scale real-time invariant enforcement across fund flows, contribute to core platform development, mentor junior engineers, and operate correctness models in production.

Lead the design and implementation of AI-based products, collaborate with stakeholders for strategic guidance, and build scalable systems while mentoring teams. Required to have significant experience in coding and AI technologies.

The Senior Lead Embedded Software Engineer will oversee software for Automated Test Equipment, collaborating with engineers, and mentoring team members while ensuring timely deliveries and maintaining software integrity.

As a Principal Software Engineer, you will design, develop, and implement complex software solutions, lead projects, and ensure compliance with standards in a cloud-first environment.

Design and implement CIAM backend services for authentication and authorization. Integrate identity systems, manage secure flows, and automate infrastructure.

Lead the technical strategy for Coinbase's Data Platform, architecting data systems for AI/ML workloads and ensuring data reliability, performance, and cross-functional alignment.

Design, build, and maintain resilient full-stack services for distributed financial SaaS systems. Lead end-to-end projects, optimize performance, ensure security and observability, mentor teams, and reduce technical debt.

The Software Engineer will develop services, APIs, and UI components to manage cost data, collaborating with Data and Analytics Engineers to deliver software solutions.

As a Software Engineer, you'll design, build, and maintain IAM solutions, ensuring security and reliability while working with cloud computing standards.

The role involves driving FinOps culture, managing cost allocation, optimizing vendor contracts, and developing tools for financial visibility in engineering decisions.