Top Senior C# Jobs in Miami, FL

Design, develop, and maintain scalable SaaS platform features using C#, PostgreSQL, React/TypeScript, and AWS. Lead architectural decisions, ensure code quality through testing and reviews, troubleshoot production issues, mentor engineers, collaborate with cross-functional teams, and participate in on-call incident response to maintain reliability and performance.

Design and build scalable, secure backend services and platform shared services using C# or TypeScript. Own architecture, containerization (Docker/Kubernetes), AWS infrastructure, databases (Postgres/NoSQL), CI/CD and IaC, security, performance, and third-party API integrations. Mentor engineers, drive platform vision, reduce technical debt, and deliver high-impact, reliable distributed systems.

Lead end-to-end design, development, testing, deployment and production support of enterprise web applications. Own architecture, mentor teammates, translate business requirements into secure technical designs, resolve production issues, and ensure on-time delivery and cross-team communication.

Design, develop, and deliver scalable backend systems and components using .NET 10 and C#. Build and maintain databases and messaging infrastructure (PostgreSQL/SQL Server, RabbitMQ), deploy with Docker and AWS, apply DDD and ORMs, triage/prioritize work, and contribute to distributed, event-driven architecture with emphasis on reliability and idempotency.

Build and extend Pulumi Cloud features and SDKs, design scalable cloud systems, write production full-stack code (Angular/TypeScript, Node.js, Go), integrate LLMs/AI into products, drive roadmap and mentor engineers while focusing on security and reliability.

Design and implement backend APIs and performant database schemas (Postgres/SQL); build scalable, testable C# services; work in Agile cross-functional squads; incorporate AI-assisted development tools; and drive engineering maturity and efficiency.

Lead design, implementation, and delivery of software via CI/CD; maintain and optimize applications; drive architecture, code reviews, testing, security, and PCI DSS compliance; mentor engineers and lead scrum team activities.

Lead a cross-functional engineering team to plan and deliver cloud and application modernization. Translate target-state architectures into delivery plans, assess systems for modernization, drive hands-on cloud-native microservices and event-driven implementations, enforce engineering standards, conduct reviews, mentor engineers, and escalate technical risks to leadership.

Design, develop, and maintain automated test frameworks for front-end and web services. Integrate tests into CI/CD, write unit/component/integration/functional/performance tests, debug front-end and API issues, collaborate with Agile teams, and improve test coverage, release velocity, and production health. Work uses Groovy/Geb and Java/HttpClient and may involve contact center integration.

Design, develop, deploy, and maintain backend components and large-scale cloud-based systems. Write tests, perform code reviews, debug, and collaborate with cross-functional teams to build scalable APIs, microservices, and reliable production software in an agile environment.

Lead Sitecore development for multilingual, multisite implementations using Helix and SXA. Architect and build components, templates, renderings, caching, and Sitecore APIs. Integrate via REST/web services, host and operate Sitecore on Azure (Search/Solr, Redis, App Services), manage CI/CD with Azure DevOps/Unicorn, enforce Gitflow branching, troubleshoot web issues, review implementations, and mentor/manage the team.

Lead API Developer to architect, build, and maintain scalable .NET/C# REST APIs on Azure. Enforce engineering best practices (CI/CD, code reviews, high test coverage), containerize with Docker/Kubernetes, integrate microservices with cloud databases/storage and IAM (OAuth/SAML/OIDC), use Azure DevOps, monitor analytics, and provide technical leadership and documentation (Swagger).

Design, develop, and maintain high-performance web applications and WebAPIs using .NET 6 and React. Build scalable, reliable services, optimize performance, troubleshoot defects, and collaborate with product and development teams. Use Azure platform services, NoSQL/SQL databases, CI/CD pipelines, and propose continuous improvements.

Lead architecture and development of scalable REST-based microservices using .NET 6+, ASP.NET and C#. Drive API design, documentation, CI/CD with Azure DevOps, Azure deployments, event-driven integrations, testing (xUnit/NUnit), and mentor engineers while ensuring performance, security (JWT/OAuth/SAML), and observability for large eCommerce systems.

Lead a team of .NET developers providing technical and architectural leadership across .NET-based applications. Drive design decisions, enforce coding standards, plan and estimate work, perform code reviews, mentor developers, troubleshoot complex issues, and collaborate with product and project teams to deliver scalable, secure microservices and APIs.

Lead end-to-end design, development, and quality of cloud-based enterprise software solutions for caregivers. Define quality criteria, estimate costs, manage risks and engineering processes, integrate systems, and act as technical leader across large, complex projects.

Build and maintain scalable backend microservices and developer-facing APIs, lead projects end-to-end, collaborate with product and engineering teams, design secure/versioned APIs, and manage cloud infrastructure using IaC.

Join an early-stage platform team to scale and mature a mortgage origination platform. Work across the stack to improve distributed systems, performance, observability, and infrastructure tooling, and help define engineering standards and frameworks for growth.

Build and maintain the GG App across Windows, macOS, and iOS including installers, background services, auto-update systems, enterprise deployment paths, health reporting, AWS backend, and documentation. Lead architecture decisions, mentor engineers, participate in on-call support, and champion AI adoption and automation across engineering.

Remote MES Consultant to lead Siemens Opcenter/Camstar implementations for discrete manufacturing. Responsibilities include requirements elicitation, functional design, project task definition and reporting, troubleshooting, release management across DEV/QA/PROD, testing/validation, end-user training, integration with ERP and automation systems, and identifying security/performance risks.

Lead architecture and development of large-scale VM management and monitoring platforms for Azure. Provide technical leadership, design documentation, debugging, performance tuning, operational excellence, mentoring, on-call monitoring, and adoption of AI-assisted workflows to improve reliability, availability, security, and observability across Windows and Linux environments.

Design, develop, deploy and support enterprise healthcare applications. Lead end-to-end solution delivery, tune report performance, ensure security and data governance, mentor team members, collaborate with stakeholders, and support production issues across front-end and back-end systems using .NET, SQL Server, SSRS/SSIS, cloud and big-data tools.

Build and maintain backend services and REST APIs using Java (11/17+) and .NET (ASP.NET Core). Implement business logic, data access, and integrations; write well-tested code with JUnit/xUnit/NUnit; contribute to CI/CD and DevOps; participate in design, code reviews, and Agile ceremonies.

The Senior C# Developer will lead AI enablement by transforming APIs into an Agent Mesh using C# and the MCP, ensuring secure AI interactions through Gravitee management.

Lead a team building the Entri scheduling and order management platform. Drive architecture, modernize legacy desktop apps into scalable SaaS, design and deliver distributed microservices, mentor engineers, partner with product and cross-functional teams, and resolve complex production issues to improve patient scheduling and coordination.