Top Software Engineer Jobs in St. Louis, MO

Own technical implementations of AI-powered patient access agent deployments from workflow discovery through configuration, testing, troubleshooting, and go-live. Translate customer requirements into workflow logic, prompts, rules, integrations, and tooling. Partner with customer-facing and internal teams, resolve production issues, and convert recurring needs into reusable product capabilities, documentation, and implementation processes.

Lead software engineering teams and complex client engagements delivering AI-first, cloud-native applications. Manage 5–8 technical direct reports, own requirements, architecture, backlogs, technical decisions, testing, risk escalation, and executive client communications. Partner with architects, engineers, project managers, sales, and stakeholders on discovery, delivery, modernization, integrations, and pre-sales. Mentor team members and contribute hands-on to AWS and AI-enabled software development.

Own engineering for a healthcare software startup, writing production code across patient and clinician products, clinical data systems, healthcare integrations, internal tools, and infrastructure. Lead architecture, reliability, security, privacy, compliance, and technical standards. Partner with product and clinical teams, make technical decisions, and eventually hire and mentor engineers while growing into Head of Engineering.

Provide hands-on technical leadership for Keeper’s cross-platform browser extension architecture. Design secure, scalable solutions using JavaScript and TypeScript; guide extension components, messaging, storage, APIs, native integrations, performance, and reliability. Lead architecture and design reviews, security collaboration, modernization efforts, and cross-functional technical decisions while mentoring senior engineers. The role requires broad full-stack expertise across cloud infrastructure, distributed systems, databases, application security, CI/CD, and modern web technologies.

IT Development Program interns gain hands-on experience contributing to healthcare technology projects across data analytics, technical product management, digital engineering, and cybersecurity. Responsibilities include developing digital solutions, solving real-world technology challenges, collaborating globally, and building technical, leadership, communication, and problem-solving skills. The internship lasts at least 10 weeks during Summer 2027 and is based in Waukesha, Wisconsin, or remotely within the United States.

Develop client-side features for a complex live multiplayer mobile game using Unity3D. Responsibilities include implementing LiveOps content, writing production-ready code, designing feature architecture, optimizing mobile performance, integrating assets, improving asset workflows, and collaborating with international interdisciplinary teams across shared game systems.

Lead architecture and hands-on development for risk, fraud, scam prevention, money operations, reconciliations, and chargebacks. Build resilient, low-latency, event-driven financial systems with auditable ledgers, strong correctness, and high availability. Mentor engineers, establish technical direction, support production ownership, and collaborate with Product, Data/ML, Compliance, and engineering leaders. Apply AI-assisted tooling and deliver scalable, compliant services across global payment infrastructure.

Lead the 0-to-1 architecture, development, testing, and launch of Riverside Insights’ Reach platform and next-generation CogAT assessment. Build and manage a 6–10 engineer team, make build-versus-buy decisions, oversee AWS infrastructure and regulated-data compliance, lead customer migration, and translate product roadmaps into technical execution. The role is hands-on, requiring active coding, full-stack fluency, AI-native development, cross-functional partnership, and senior leadership communication.

Develop and maintain Python backend services, primarily with Flask, while designing scalable architecture and integrating legacy systems. Build AWS solutions using Lambda, Cognito, SNS, SQS, and DynamoDB; maintain CI/CD pipelines and infrastructure as code with OpenTofu and Terraform. Collaborate in an Agile/Scrum environment, contribute to technical decisions and engineering standards, review code, and mentor junior developers.

Build and operate a modern web platform replacing a legacy federal financial system. Develop TypeScript and Node.js domain services, REST APIs, financial calculation engines, workflows, integrations, audit controls, and database logic. Conduct business-rule archaeology across Java and PL/SQL, implement tested parity, and contribute across UI, infrastructure, CI/CD, security, and cloud operations. Use agentic AI development tools, review production code rigorously, mentor teammates, and deliver complete vertical slices. Travel is required no more than once per quarter.