Top Software Engineer Jobs in St. Louis, MO

Build and maintain Rocket Money’s Autopilot banking and investment systems. Responsibilities include developing React interfaces and Node.js/GraphQL backends, making architecture decisions, collaborating with stakeholders, managing vendor integrations, improving observability and performance, and owning the technology lifecycle from planning through production maintenance.

Develop and scale cloud-based media encoding pipelines supporting workflow orchestration, metadata publishing, task prioritization, and catalog management. Design distributed systems, write high-quality Java code, build automated tests, collaborate cross-functionally, and own projects from conception through production. The role supports streaming, advertising, broadcast television, video podcasts, and other media experiences.

Design, build, and maintain highly available APIs and distributed services supporting millions of customers. Manage and optimize AWS cloud infrastructure using Infrastructure as Code, CI/CD, containers, and automation. Improve system performance, reliability, and security; monitor and troubleshoot production issues; apply AI-enabled tools; and collaborate across engineering teams to deliver resilient, customer-focused solutions.

Develop production software for maritime route optimization, vessel performance and fuel-consumption modeling, voyage analysis, simulation, and route evaluation. Build and improve optimization algorithms, APIs, services, testing, and explainable recommendation systems using Rust and Python. Collaborate with engineers, product experts, and maritime specialists to translate complex physical and mathematical problems into maintainable software supporting U.S. Government and defense customers.

Refine, stabilize, and enhance a Google Docs add-on including Apps Script refactoring, OAuth2 and REST API integration, retry and sync logic, UI improvements, end-to-end testing, and preparing the add-on for Google Workspace Marketplace publication and security review.

Build and operate AI agent systems with customer engineering teams, helping move prototypes into reliable production systems. Design agents, improve evaluations, monitoring, scaling, and reliability, and train customers on the Mastra framework. Translate recurring customer challenges into open-source framework improvements, fix performance issues, ship new primitives, improve code quality, and influence the product roadmap through production insights.

Lead an engineering team delivering automated month-end close pipelines for client accounting teams. Oversee ERP integrations, SQLMesh and DuckDB transformations, journal-entry outputs, controls, reconciliations, exception handling, and approval workflows. Maintain architectural boundaries across Elixir, Python, and platform components while converting bespoke client solutions into reusable capabilities. Manage technical roadmaps, multiple client engagements, engineering standards, and team development while partnering with accounting, delivery, technology, and product stakeholders.

Develop full-stack mission planning and command-and-control software for space communications programs. Build responsive interfaces with modern JavaScript frameworks, backend services and APIs using Python and SQL, and containerized applications. Own features through testing and deployment, write automated tests, collaborate with QA and cross-functional teams, and improve software usability, security, performance, and reliability in highly secure government environments.

Join a remote engineering team to write, test, and maintain code under senior guidance; participate in code reviews, standups, and sprint planning; debug and resolve application issues; and continuously learn new technologies and best practices.

Leads the technical evolution of Kilo Code, a high-scale VS Code AI coding extension. Responsibilities include setting architecture and performance strategy, building advanced AI-assisted coding features, driving cross-team technical roadmaps, mentoring engineers, owning production delivery, optimizing context and token usage, reducing technical debt, and partnering with Product and Design. The role requires hands-on software development, technical leadership, developer-tools expertise, TypeScript and Node.js proficiency, large-scale performance optimization, AI workflow experience, and Eastern Time Zone availability.