Top Senior Software Engineer Jobs in St. Louis, MO

Design and maintain high-quality software solutions for an eCommerce platform, focusing on back-end systems and collaborating with various teams.

Design and build applications using Python, manage component design, optimize performance, and collaborate with clients on innovative products.

As a Software Engineer II, you will design, build, and maintain applications for a healthcare quality data platform, collaborating with teams to develop features and ensure high standards of performance and security.

Design, build, and operate reliable and scalable systems to support Anrok's product, focusing on technical debt, security, and performance optimization.

The Cloud Software Engineer will design and operate distributed systems for ClickHouse's Observability platform, ensuring reliability and efficiency while working with various engineering and infrastructure teams.

Develop and maintain ClickHouse Cloud interfaces and dashboards, collaborating with multi-disciplinary teams to enhance user experience and system reliability.

Design, develop, and maintain scalable software solutions, collaborating with cross-functional teams and mentoring junior developers to enhance Arine's web applications and APIs.

Senior backend engineer responsible for designing and implementing new features, scaling and optimizing the platform, improving Postgres and Elasticsearch performance, fine-tuning LLMs, and making architectural decisions. Collaborate with engineering team, take ownership of features, write performant, maintainable code, and help shape product and infrastructure for data-intensive applications (NLP, search, indexing).

Design and implement front-end features, build high-quality user interfaces, take ownership of product and architecture decisions, collaborate with engineering team, and deliver performant, user-focused solutions.

As a Senior Software Engineer on the Data Platform team, you'll enhance the data infrastructure, develop ETL pipelines, maintain data quality, collaborate across teams, and mentor junior engineers.

The Staff Software Engineer will architect and code backend services and ML models, integrate systems, ensure quality, and mentor engineers in the AI & Strategy Engineering team.

Design, build, test, and deploy production software for an agentic chatbot platform across intake, orchestration, retrieval, answer generation, caching, and integrations. Deliver clean code, participate in sprint work, review merge requests, collaborate with product and architecture, mentor junior engineers, and contribute to design and delivery decisions to solve conversational AI problems within a benefits ecosystem.

The Senior Software Engineer will enhance efficiency in procurement for the Department of War by developing web applications, managing technical delivery, and mentoring team members.

As a Java Software Engineer III, you will design, develop, and maintain scalable Java-based backend services, mentor other engineers, and influence architectural decisions in an agile environment.

Lead development of a new iOS mobile product: implement LiDAR/AR scanning, floor-plan rendering, offline-first sync with FastAPI backend, prototype visualizations, integrate backend/ML work, and own subsystems end-to-end on a small, fast-moving team using AI coding agents.

Join as an early founding full-stack engineer to architect, build, and deploy a scalable platform serving AI-driven voice applications. You will own frontend and backend development, design infrastructure with the CTO, and deliver reliable production systems for enterprise customers.

Develop and manage high-performance back-end systems, design secure APIs, optimize performance in cloud environments, conduct testing, and manage ML model lifecycles.

Lead technical direction for software architecture and cross-team initiatives focusing on scaling consumer-facing systems and maximizing loan originations while maintaining compliance and system integrity.

Design and build agent-powered mission consoles, collaborate with stakeholders to improve user workflows, and maintain agentic workflows for mission outcomes.

As a Senior Software Engineer, you will design and build a cutting-edge identity search platform and implement AI systems for defense applications, working closely with cross-functional teams to enhance user workflows and support national security.

The Senior Staff Software Engineer will lead major projects, drive architectural innovation, interface with customers for solutions, and mentor engineers. Experience in software engineering and a strong grasp of AI, cloud scale, and evolving technologies is essential.

As a Senior Software Engineer, you'll design and develop scalable services for real-time pricing, collaborate with cross-functional teams, and ensure system reliability through testing and monitoring.

As a Senior Software Engineer, you will design frontend architectures, collaborate with backend engineers, mentor others, and utilize AI tools for efficient development.

The AI Assisted Software Engineer will design and develop enterprise software solutions, utilizing AI-assisted tools, and architect scalable systems while collaborating across teams to improve business operations.

Design and implement cloud solutions for clients, leading teams, solving technical challenges, and utilizing modern technologies like Kubernetes and AI.