Top Senior C# Jobs in Miami, FL

Create and optimize high-quality, mobile-optimized character shaders and material workflows in Unity URP. Develop master materials, tools, and editor extensions (C#). Profile and debug performance on iOS/Android, collaborate with artists on look development, and ensure efficient rendering across mobile devices.

Senior .NET Web App Developer responsible for designing and building .NET web applications, implementing Oracle PL/SQL solutions, using Entity Framework and Blazor, applying design principles, producing technical documentation, performing performance tuning, and collaborating in Scrum/Agile teams with Bitbucket, JIRA, Tempo, and Confluence.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

Volunteer Principal Full Stack Engineer to lead and contribute across frontend and backend (React/React Native, Node.js, MongoDB). Own feature development, mentor engineers, collaborate with product/design, ship scalable code, and support CI processes. Must commit 4+ hours weekly and attend a weekly standup; first task includes launching a fundraising campaign.

Volunteer senior developer to design, build, and maintain a cross-platform medical scheduling app (web, iOS, Android). Participate across the full development lifecycle: design, coding, testing, CI, deployments, code reviews, production support, incident management, and platform architecture. Attend weekly standups and commit at least four hours per week.

Lead design, architecture, and hands-on implementation of scalable healthcare SaaS systems. Drive interoperability (HL7, FHIR, EDI), mentor engineers, liaise with stakeholders, manage technical risk, and ensure quality, performance, security, and innovation.

Lead design, develop, and maintain scalable full-stack web applications. Mentor engineers, perform code reviews, troubleshoot production incidents, optimize performance, ensure API-first design, support cloud-native deployments (Kubernetes), and participate in on-call rotations.

Lead design, development, and maintenance of scalable, cloud-native web applications. Own end-to-end product features, mentor engineers, troubleshoot production incidents, improve performance, implement APIs, and support on-call rotations.

Senior Quality Engineer responsible for designing and maintaining scalable automated test frameworks, executing functional/regression/performance tests, analyzing results, documenting QA activities for compliance, collaborating with cross-functional teams, and mentoring junior engineers to improve automation quality.

Lead a cross-functional Agile engineering team with hands-on architecture and coding, mentor engineers, partner with Product and QA, and drive modernization, CI/CD, containerization, cloud adoption, and operational reliability to improve delivery and team effectiveness.

The Lead Technology Engineer will lead IT systems implementation, ensure network security, manage integrations, and enhance operational efficiency through automation.

Senior full‑stack engineer responsible for building production-quality Salesforce platform capabilities, integrations (MuleSoft, REST/SOAP), AI-enabled tooling (Claude plugins, MCP servers), CI/CD, and reusable libraries. Mentor engineers, run architecture/code reviews, and collaborate cross-functionally to deliver scalable, secure cloud-native solutions using Python, LWC, Apex, and AWS.

Lead test strategy and automation for a high-transaction healthcare platform. Define and execute scalable automation frameworks (UI, API, integration), integrate tests into CI/CD, identify systemic quality risks, mentor engineers, influence architecture and testability, and promote AI-enabled testing practices to improve test coverage, defect analysis, and release confidence.

Lead and grow the AI Platform team to deliver shared AI/ML services, infrastructure, and tooling. Define platform vision with the architect, enforce standards for reliability, security, and observability, and collaborate with cross-functional teams to enable secure, self‑service developer capabilities.

Build, scale, and maintain cloud-native backend services and APIs using C#/.NET on Azure. Lead architecture, performance optimization, CI/CD, code reviews, mentor engineers, and collaborate with product, design, and frontend teams to deliver reliable, high-performance features.

The Senior ServiceNow Developer designs and builds solutions on the ServiceNow platform, working with stakeholders to enhance legal practice operations and improve service delivery through automation and integrations.

Lead customer-facing architecture and development of scalable, cloud-native AWS applications. Drive design discussions, migrate monoliths to microservices, implement serverless and container solutions, advise on AWS best practices, and influence developer-focused product and platform strategy.

Lead technical engagements to architect and build scalable, cloud-native AWS applications using serverless, containers, and microservices. Migrate monoliths to microservices, advise on AWS best practices, influence infrastructure and product strategy, and work directly with customers and cross-functional teams.

Develop and sustain automated manufacturing test solutions for optical transport products, analyzing parameters and collaborating with engineering teams for improvements.

The Staff Software Engineer will lead design and development of cryptocurrency platforms, provide technical mentorship, and drive system reliability, while staying current on blockchain trends.

Lead the client automation strategy for a new game: design test architecture and frameworks (C#/C++/Unreal Blueprint), own automation product delivery as scrum product owner, collaborate with online services, mitigate technical risks, and build/maintain scalable test infrastructure and tooling to improve reliability and performance.

Lead design and maintenance of scalable test automation frameworks and end-to-end integration tests. Build automated suites (Playwright/C#, Java, Test Sigma), integrate tests into CI/CD, reduce flakiness, analyze test results, triage defects, and drive risk-based testing and modern QA practices across engineering and product teams.

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

Lead design, development, testing, and delivery of backend-focused .NET Core systems. Mentor engineers, drive Agile ceremonies, own end-to-end projects, improve performance and reliability, provide 3rd-level support, and collaborate with stakeholders to implement APIs, databases, cloud, and containerized solutions.

Build and maintain high-traffic full-stack web experiences using React and Next.js, design and integrate APIs, ensure observability and testing, debug production issues, lead architecture and AI experimentation, and mentor engineers to deliver scalable, reliable booking and purchasing systems.