Top C# Jobs in Miami, FL

Perform manual and automated testing for lending applications and services. Develop and maintain test automation, write functional, regression, and API test cases, participate in test planning and defect triage, and track issues through resolution. Collaborate with internal and external teams to ensure reliable, scalable, and performant software while contributing to a quality-focused engineering culture.

Develop scalable backend software for lending infrastructure supporting loan origination, funding, servicing, and sales. Responsibilities include designing software modules, writing and testing maintainable code, building distributed and event-driven systems, participating in code reviews, and collaborating with senior engineers and cross-functional teams. The role uses C# or Python, relational and document databases, AWS, Docker, and Kubernetes, with emphasis on reliable, compliant financial technology.

Design and develop scalable enterprise software for the Lending team. Build backend systems using .NET, Python, relational and NoSQL databases, messaging systems, Docker, and AWS. Plan, triage, and prioritize work while applying object-oriented programming, SOLID principles, domain-driven design, distributed systems, and event-driven architecture practices.

Develop and document enterprise-grade SaaS platform functionality while improving quality and performance. Responsibilities include full-stack development, functional and unit testing, defect triage, code reviews, API and process documentation, operational support in regulated environments, and collaboration within Agile and DevOps teams. The role requires expertise in C#, ASP.NET Core, T-SQL, Entity Framework Core, web technologies, software design, debugging, distributed architectures, and high-performance APIs.

Lead the architecture, technical strategy, and roadmap for Microsoft's Windows ML compiler stack. Design high-performance compiler infrastructure, execution engines, optimization frameworks, and developer tools supporting CPU, GPU, and NPU workloads. Drive NPU enablement, graph optimization, scheduling, memory management, code generation, and hardware abstraction. Partner with silicon vendors and internal teams, influence AI hardware and platform strategy, lead cross-team initiatives, and mentor engineers developing on-device and generative AI capabilities.

Lead architectural vision and delivery for complex, scalable SaaS systems. Design cloud-native distributed systems using Docker and Kubernetes, develop foundational abstractions, reduce technical debt, and drive engineering best practices. Partner with Product, Design, and Engineering leadership, mentor senior engineers, and contribute to hiring. Apply deep C# and .NET expertise, performance analysis, debugging, and AI-assisted development, including production LLM integrations.

Develops and supports Azure integration solutions using Logic Apps, Azure Functions, API Management, Event Grid, and Service Bus. Writes C#/.NET code, builds REST and SOAP integrations, manages Azure SQL and storage, and defines infrastructure with Terraform. Implements CI/CD, monitoring, diagnostics, retries, idempotency, and secure access controls. Collaborates with stakeholders on technical designs, documents solutions, and troubleshoots production systems.

Build and operate full-stack certificate management, security, monitoring, and vulnerability products. Develop TypeScript APIs and React frontends, design MySQL schemas, manage AWS workers and Kubernetes infrastructure, maintain legacy .NET and Python services, integrate partner APIs, improve CI/CD and observability, participate in on-call support, and develop AI-assisted features. The role includes code reviews, testing, incident resolution, technical documentation, and mentoring engineers.

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.

Develops, tests, supports, and maintains scalable web applications and software components across front-end and back-end technology stacks. Partners with Product Management to design solutions, contributes to Agile planning and architecture, troubleshoots deployed products, reduces technical debt, and provides technical guidance to less experienced engineers.

Build and operate Linux and Kubernetes infrastructure for Azure Front Door’s globally distributed edge fleet. Design, implement, validate, and deploy platform capabilities; optimize performance, reliability, scalability, security, and operations; investigate production issues; develop automation and engineering tools; and provide technical guidance through reviews and knowledge sharing.

Design, implement, and optimize gameplay mechanics and systems. Collaborate with designers, artists, and developers to troubleshoot and refine code, optimize performance across platforms, and maintain clean modular code while staying current with game technologies.

Develop and support software applications, REST and ASP.NET web services, distributed systems, data integrations, and storage solutions. Analyze requirements, optimize performance, resolve application issues, implement security and data protection, and collaborate with product, business, and QA teams. The role includes technical documentation, quality reviews, managing competing priorities, and mentoring less experienced developers.

Lead technical delivery for Life Insurance and Annuity clients: design solutions and architectures, produce technical design docs, mentor distributed teams, drive code quality and integrations (APIs), maintain mainframe and .NET codebases (COBOL, C#, DB2/SQL), and leverage AI tools (GitHub Copilot, Claude Code, custom agents) for automation and efficiency.

Designs and executes manual and automated testing across applications, APIs, databases, data platforms, and integrated systems. Builds QA automation frameworks, validates data quality, manages test environments, supports CI/CD test integration, tracks defects, and performs root cause analysis. Collaborates with Agile engineering teams on sprint planning, releases, and process improvements while testing healthcare technology platforms and regulated workflows.

Develop and maintain cloud-based healthcare revenue-cycle software, build new features, modernize applications, perform code reviews and automated testing, address security vulnerabilities, troubleshoot production issues, and improve system performance. Collaborate with developers, product owners, support teams, and project leadership while applying Agile, CI/CD, TDD, and software development best practices.

Develops, tests, documents, supports, and improves software systems with a primary focus on Sitecore and modern web applications. Designs responsive interfaces, integrations, APIs, automations, and CMS solutions while supporting CI/CD, Agile, testing, monitoring, security, and performance standards. Troubleshoots incidents, manages technical debt, collaborates with project and business teams, documents solutions, and provides stakeholder support. Requires strong web technologies, databases, operating systems, enterprise integration, and software development experience.

Develops and maintains scalable software applications across multiple platforms. Responsibilities include participating in Agile planning, designing solutions, writing code and automated tests, troubleshooting, supporting deployed applications, reducing technical debt, and guiding less experienced engineers. Requires experience with web and backend technologies, SQL Server, software architecture, application lifecycle methodologies, and end-to-end product development. AWS and AI-driven development experience are preferred.

Leads end-to-end development of software that validates and accepts hardware racks into Microsoft datacenters. Designs reliable, observable, and scalable workflows; translates hardware and operational requirements into platform capabilities; diagnoses production issues; improves automation and performance; and collaborates with software, hardware, networking, manufacturing, and datacenter teams. The role includes architectural design, implementation, testing, rollout, monitoring, documentation, and mentoring.

Owns enterprise integration architecture across data and application systems. Defines integration standards, designs and builds complex integrations, creates reusable reference architectures, leads strategic architecture programs, modernizes legacy ESB and point-to-point systems, and governs security, reliability, observability, and data integrity. The role also coaches engineers and advises technical and business stakeholders across global teams.

Own the networking architecture and roadmap for AKS Flex and Unbounded, enabling secure, reliable, high-performance Kubernetes connectivity across sites, clouds, edge environments, and on-premises infrastructure. Design overlay and underlay networks, routing, encrypted tunnels, eBPF dataplanes, and distributed systems for high-latency and partitioned environments. Integrate InfiniBand and RDMA for AI workloads, lead cross-team architecture efforts, improve global fleet performance and reliability, and participate in production operations and on-call rotations.

Owns maintenance and support of Virscidian’s existing software products. Responsibilities include resolving defects and customer issues, developing C#/.NET desktop and server applications, working with SQL Server and REST APIs, supporting Azure resources and DevOps processes, troubleshooting deployments, and delivering incremental features. The role collaborates with support, product, business, and engineering teams while contributing to SaaS, scientific algorithms, performance, and scalability initiatives when appropriate.

Develops, modernizes, tests, documents, and sustains software applications for NAVSUP BSC. Responsibilities include coding with .NET and related technologies, integrating systems, implementing cybersecurity controls, automating CI/CD pipelines, managing artifacts, troubleshooting production issues, conducting quality audits, and supporting secure cloud-native architectures. The role collaborates with engineering, security, operations, and government stakeholders in an Agile environment.

Design, develop, and maintain scalable billing and invoicing systems using C# and PHP. Lead architecture, code reviews, mentoring, CI/CD improvements, monitoring, database optimization, security, and PCI DSS compliance. Use Claude and Cursor in daily development while validating generated code for correctness, security, performance, and maintainability. Collaborate across Product, Engineering, QA, and support teams to deliver reliable payment-processing services and resolve complex technical issues.

Designs, builds, scales, and operates distributed CI/CD services supporting millions of builds, tests, and releases. Develops code for Azure-based infrastructure spanning virtual machines, containers, and custom lab environments. Responsibilities include requirements analysis, architecture and design documentation, estimation, debugging, optimization, operational playbooks, on-call incident response, monitoring, reliability improvements, and mentoring engineers.