Top Senior C# Jobs in Miami, FL

The Senior Software Engineer will lead projects for the Forms platform, designing and building features across web, mobile, and backend systems while mentoring other engineers and improving platform scalability and reliability.

Design, build, and maintain scalable test automation frameworks and tooling (Playwright, C#, JS/TS). Integrate automated tests into CI/CD, develop end-to-end, integration, and performance tests, apply AI techniques for test generation and defect detection, troubleshoot system issues, mentor QA teams, and drive automation and quality engineering best practices.

Lead SRE efforts for DFIN SaaS: ensure availability, performance, scalability, and automation. Implement monitoring, CI/CD, IaC, container orchestration, AI-enhanced observability, incident response, RCA, and runbook automation while collaborating across engineering teams.

As a Senior Software Engineer, you'll develop and build tools for creative projects while leading feature development and collaborating with teammates.

Lead backend and full-stack work on the Payments team, building multi-gateway integrations (Stripe, PayPal), payment APIs, and customer payment UIs. Ensure secure, compliant (PCI-DSS) payment flows, reliability, observability, and scalability across AWS/Kubernetes microservices. Partner cross-functionally to design architecture, implement settlement/reconciliation, and maintain high availability.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

Senior Software Engineer responsible for developing and maintaining web applications and microservices (React, Golang). Mentor team members, lead code reviews, influence technical decisions, improve CI/CD and testing strategies (unit, E2E, performance), collaborate across teams on integrations, and promote engineering best practices and documentation.

Lead architecture and hands-on development of the end-to-end video pipeline (live ingest, transcoding, storage, playback, and developer SDKs). Mentor engineers, collaborate across mobile/web/ML/platform teams, own monitoring and on-call support, and help scale video streaming and VoD capabilities for millions of streams and clips.

Lead design and implementation of modernized insurance underwriting and policy administration solutions. Drive cloud transformation, data-driven and secure architectures, improve risk selection and claims resolution, enhance customer experience through automation, mentor technical teams, manage client relationships, and oversee project lifecycle, budgets, and delivery quality.

The Market Data Engineer will design and implement high-performance market data systems, focusing on trading infrastructure, performance optimization, and system resiliency.

Design, develop, test, and deploy enterprise-grade .NET web applications. Implement DDD-based architectures, optimize SQL Server data access (EF/Dapper), build CI/CD with Azure DevOps, automate with PowerShell, support deployments on Linux/Windows/Docker, mentor developers, and collaborate with product and QA to deliver secure, production-ready solutions.

Design, build, and support cloud infrastructure and developer platforms across AWS and Azure. Implement IaC (Terraform), CI/CD automation (preferably GitLab), containers and Kubernetes, developer tooling (Dev Containers, Remote IDEs), cloud networking, observability, and incident response. Improve platform reliability, security, and developer experience while collaborating with application, security, and SRE teams and participating in on-call rotation.

Lead design, development, testing, deployment, and maintenance of web applications. Collaborate with cross-functional teams, plan work, enforce architecture and security standards, mentor engineers, implement tests, manage integrations and automations, improve performance, and establish development practices.

Lead and grow a US-based SRE team while acting as a hands-on incident commander. Drive operational excellence through incident management, reliability engineering, automation, observability (Datadog), runbook maturity, and cross-functional collaboration. Ensure compliance with healthcare/fintech standards and support a global follow-the-sun model.

The Sr. GIS Lead Developer will develop and maintain GIS applications and tools, requiring extensive experience with multiple GIS technologies and programming languages.

This role involves full stack development, mentoring junior developers, participating in agile practices, and leading cross-functional teams on software projects.

The Salesforce Lead Developer will manage technology projects, guide developers, and ensure successful work completion using Salesforce and programming skills.

The Build Engineer / DevOps role involves implementing a delivery pipeline for applications, enhancing communication among teams, managing integrations, and overseeing CI/CD processes in a .NET environment.

End-to-end ownership of full-stack features: design, implement, test, and deploy scalable web applications using C#/.NET back ends and React/JavaScript front ends; build and integrate RESTful APIs; optimize and debug systems; collaborate across teams in an agile environment.

Lead development and modernization of a DevSecOps "Run and Release" platform: build .NET backend microservices, integrate CI/CD gating with GitHub Actions and ADO, provision Azure infrastructure with Terraform, script automations in Python, manage Postgres and MongoDB data flows to Databricks/ADLS, enforce supply-chain security (JFrog, Vault, LaunchDarkly), and implement Splunk monitoring. Participate in on-call rotation and reduce technical debt to improve secure software delivery.

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 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.

Design, build, and maintain core LIMS software across the SDLC; own architecture, data management, business rules, and embedded control components; plan installations/upgrades, provide operational support, ensure compliance and documentation, and mentor junior engineers.

Build and optimize low-latency, high-throughput analytics for HFT environments. Implement financial research (execution cost models, order flow analytics), architect modular plugin systems, and perform HPC tuning (parallelization, memory layout, zero-GC) to power real-time microsecond-resolution trading diagnostics.

Build and optimize a low-latency, high-throughput analytics engine for HFT. Implement market-microstructure research, execution cost models, and order-flow analytics with HPC techniques and modular plugin-based architecture.