Top Software Engineer Jobs in St. Louis, MO

Design and build end-to-end frontend and backend features, create scalable secure architectures, implement AI-powered features (LLMs, embeddings, agents), use AI tools to accelerate development, collaborate with product/design/platform teams, participate in code reviews, and deploy production systems.

The Software Engineer will design, develop, and install software solutions, ensuring compliance with coding standards and documenting functionality.

Design, build, and maintain RESTful connectors and normalization layers for identity/entitlement data; implement data sync, delta detection, and versioning; develop Next.js/React dashboards; integrate enterprise APIs and secure read-only auth; use AI-assisted coding tools; collaborate with PMs, architects, and QA while maintaining documentation and version control.

Build and ship full‑stack features for North, an enterprise AI workspace. Develop secure autonomous agents, execution engines, integrations, observability and evaluation systems. Collaborate with researchers to productionize models and deliver performant, low‑resource deployment code while adhering to strict security and privacy constraints.

The Staff Software Engineer will lead design, development, and mentoring in building Embedded Finance capabilities while ensuring high-quality production services.

The Senior Software Engineer will lead projects for the Forms platform, designing and building features across web, mobile, and backend systems while mentoring other engineers and improving platform scalability and reliability.

Lead quality assurance and test strategy across Agile teams, drive automation for testing, mentor QA teams, and ensure high-quality software delivery.

The Lead Rust Software Engineer will design and build scalable applications, mentor teams on Rust, and contribute to complex product development.

As a Founding Software Engineer at Glacis, you'll lead engineering efforts, develop full-stack solutions, and drive AI integration while engaging directly with enterprise customers.

As a Software Engineer New Grad, you'll develop features for mining operations using TypeScript and AI technologies, contributing to real-time data systems and computer vision applications.

Designs, develops, and deploys AI-driven, cloud-native applications on Azure. Builds RAG knowledge systems, AI agents, secure APIs, and orchestrated workflows using C#, .NET, Azure services, Docker, and CI/CD. Collaborates with stakeholders, ensures observability and security, supports production incidents, and provides documentation and knowledge transfer.

As a Founding Software Engineer, you'll architect and evolve core backend systems and streaming data pipelines, optimize performance and storage, and define data models to enhance AI deployment safety and performance in real-time environments.

The Software Engineer will develop a modern data platform, manage architecture, write reusable code, and ensure system integrations. Responsibilities include collaborating with teams, documenting processes, and enhancing applications.

Develop and maintain the Keycard Agent SDK, ensuring compatibility with various languages and frameworks, while engaging with the developer community to enhance agent applications.

As a Software Engineer at Keycard, you'll design, develop, and implement identity and access infrastructures for dynamic, agent-native systems. You'll work on innovative projects that enhance developer experience and security, collaborating closely with a distributed team.

The role involves developing APIs, building internal tools, and collaborating with teams to enhance system performance while solving engineering challenges.

As a Backend Engineer, you'll develop software for backend systems and APIs, ensuring high quality and performance. You'll collaborate with cross-functional teams, take ownership of your projects, and manage on-call duties.

The Software Engineer will design, implement, and maintain real-time services for Twilio's Voice Trust team, ensuring robust and high-throughput communication solutions. Responsibilities include gathering requirements, coding, testing, and on-call support in a distributed production environment using Agile methodologies.

We are seeking a product-minded backend engineer to work on our Customer Studio product, focusing on data performance, analytics, audience syncing, and generative AI. The role requires strong architecture, scalability considerations, and product engagement.

The role involves developing tools for enterprises to manage Hightouch deployments, focusing on access control, change management, and data warehouse performance.

The Software Engineer will work on high-throughput streaming systems, scaling infrastructure to manage billions of events, ensuring low-latency and high performance while delivering projects from start to finish with significant ownership.

As a Software Engineer on the Edge team, you will own edge networking configuration, manage DNS, and improve observability while shaping the team's engineering practices.

Develops and operates Planet's large-scale distributed backend services to process satellite imagery workflows reliably 24x7. Builds cloud-native services (Go/Python) on Kubernetes/GCP, manages persistence (Spanner, Redis, Postgres, BigTable), improves scalability and reliability, implements monitoring/alerts/runbooks, and participates in on-call rotations and incident response.

Map and analyze Epic system tables and data to the Premier spec, develop data transformations and scripts, build SQL queries, stored procedures, and indexes, document mappings, act as SME with vendors/clients, and report project status via tools like JIRA.

As a Full Stack Software Engineer, you will develop and maintain cloud services, collaborate in Agile development, and ensure code quality while integrating software with geospatial intelligence.