Senior Full Stack Blockchain Developer Jobs in St Louis, MO

Company Description: Stereotaxis is the global leader in innovative robotic technologies designed to enhance the treatment of arrhythmias and perform endovascular procedures. Its mission is the discovery, development and delivery of robotic systems, instruments, and information solutions for the interventional laboratory. These innovations help physicians provide unsurpassed patient care with robotic precision and safety, improved lab efficiency and productivity, and enhanced integration of procedural information.

Core components of Stereotaxis' systems have received regulatory clearance in the United States, European Union, China, Japan, Canada, and elsewhere. For more information, please visit www.stereotaxis.com. Position Summary: The Senior Full Stack Developer is responsible for designing, developing, and maintaining a scalable, cloud native software platform consisting of Flutter-based web and mobile applications and an ASP.NET Core backend deployed on Azure Kubernetes Service

This role includes delivering real-time features such as ultra-low latency video streaming of lab procedures, along with collaborative tools that enable colleagues to observe and interact during active sessions. The ideal candidate is highly proficient across both front end and back-end development, containerized microservices, cloud infrastructure, and modern CI/CD practices, contributing to the full software development lifecycle from concept to deployment and ongoing maintenance. Essential Responsibilities: Collaborate with product managers, UX designers, and engineering teams to ideate, design, and deliver features for the SynX platform.

Architect and implement Flutter-based user interfaces for web, iOS, and Android, ensuring responsive, high-performance, and visually consistent experiences. Design and maintain scalable server-side architecture using ASP.NET Core, including REST APIs, microservices, background workers, and integrations. Build, optimize, and maintain real-time video streaming and collaboration capabilities using LiveKit, WebRTC, and related signaling/transport technologies

Manage WebRTC media flows, resource constraints, permissions, LiveKit rooms, tracks, and participant interactions. Develop multi-user collaborative features enabling colleagues to simultaneously observe and contribute during live lab procedures. Build and maintain well structured SQL/NoSQL data solutions supporting the application ecosystem.

Write secure, maintainable, and well documented code following engineering best practices. Implement robust authentication, authorization, encryption, and data protection measures across the platform. Design, implement, and maintain automated unit, integration, API, and UI tests for Flutter client applications and backend services.

Develop and maintain automated end-to-end (E2E) tests covering the full technology stack to ensure system reliability and regression coverage. Troubleshoot, diagnose, and resolve issues across the stack-including mobile, web, backend services, and video streaming pipelines. Build and maintain CI/CD workflows (Azure DevOps) for automated builds, container publishing, and AKS deployments.

Package, sign, and release SynX mobile apps to the Google Play Store and Apple App Store, ensuring compliance with platform requirements. Monitor the health, reliability, and performance of applications using Azure tools such as App Insights, Log Analytics, and LiveKit diagnostics. Participate in Agile ceremonies, sprint planning, code reviews, and continuous improvement discussions.Qualifications & Skills: Required BS in Computer Science or a related field highly preferred

5+ years of professional development experience, including full-stack responsibilities. Strong experience with a modern cross-platform mobile development framework, such as Flutter or React Native, and ASP.NET Core. Experience developing within Agile methodologies and CI/CD pipelines with automated testing frameworks

Strong understanding of modern mobile technologies and emerging real-time streaming capabilities. Excellent communication skills, attention to detail, organizational ability, and teamwork. Legally authorized to work in the United States.

Preferred Experience with one or more of the following technologies is highly preferred: oSignalR, WebRTC, C++, Docker, Linux, SQL, Azure, EF Core, Kubernetes, LiveKit, Flutter Familiarity with live Video/Audio streaming technologies, real-time media transport, or low-latency communications. Experience developing medical software or software compliant with IEC 62304 is a strong plus. Work Conditions: This role is an in-office position at Stereotaxis' headquarters.

Culture: Stereotaxis values steadfast integrity, intellectual excellence, responsiveness and reliability, and a dedication to constant improvement. We take pride in the positive impact of our work and in building a collaborative and innovative work environment that embraces challenge.Qualifications & Skills: Required BS in Computer Science or a related field highly preferred. 5+ years of professional development experience, including full-stack responsibilities

Strong experience with a modern cross-platform mobile development framework, such as Flutter or React Native, and ASP.NET Core. Experience developing within Agile methodologies and CI/CD pipelines with automated testing frameworks. Strong understanding of modern mobile technologies and emerging real-time streaming capabilities

Excellent communication skills, attention to detail, organizational ability, and teamwork. Legally authorized to work in the United States. Preferred Experience with one or more of the following technologies is highly preferred: oSignalR, WebRTC, C++, Docker, Linux, SQL, Azure, EF Core, Kubernetes, LiveKit, Flutter Familiarity with live Video/Audio streaming technologies, real-time media transport, or low-latency communications.

Experience developing medical software or software compliant with IEC 62304 is a strong plus. Work Conditions: This role is an in-office position at Stereotaxis' headquarters. Culture: Stereotaxis values steadfast integrity, intellectual excellence, responsiveness and reliability, and a dedication to constant improvement.

We take pride in the positive impact of our work and in building a collaborative and innovative work environment that embraces challenge.