Top Senior .NET Developer Jobs

Develop and maintain sports trading and tools applications and platforms using .NET, C#, and SQL Server. Build scalable, low-latency, highly available software handling high-volume real-time data. Support existing 24/7 trading systems, perform root-cause analysis, collaborate with product owners and testing teams, contribute to solution proposals and estimates, and mentor technical team members. The role will also expand into Golang, React, and Google Cloud Platform.

Leads end-to-end software engineering for healthcare payments systems within an agile team. Designs, develops, tests, reviews, debugs, and supports secure, scalable production applications using .NET/C#, SQL, and AI-assisted development tools. Drives automation, operational stability, responsible AI adoption, and software delivery practices. Partners with vendors and internal teams to evaluate architectures and technical solutions while coordinating cross-functional delivery.

Develop and maintain middleware platforms for the myQ residential and commercial products. Translate product requirements into technical designs, lead Agile development and offshore teams, manage codebase changes and technical debt, ensure coding standards and security compliance, and collaborate with product, architecture, infrastructure, database, QA, and firmware teams. Mentor engineers, participate in technical reviews, troubleshoot issues, document solutions, and support project estimation and progress reporting.

Develop and maintain full stack web applications using .NET. Design and implement microservices on Azure, and manage APIs using Azure API Management. Collaborate on architecture and deliver production-ready services for a San Ramon, CA based full-time role requiring significant hands-on experience.

Lead technical design and deliver secure, scalable C#/.NET software for trading systems. Drive architecture, coding, code review, automation, resiliency, CI/CD, and adoption of AI-assisted engineering practices while mentoring teams and engaging vendors.

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.

Leads architecture, development, and delivery of scalable healthcare applications using .NET, Azure, Kubernetes, SQL Server, and modern web technologies. Provides technical leadership, mentors engineers, conducts code reviews, manages production issues, optimizes database performance, and guides sprint execution across multiple initiatives.

Develop and maintain full-stack .NET applications and REST APIs while modernizing a legacy tax-compliance platform into scalable, resilient AWS cloud-native microservices. Design software using object-oriented principles, SOLID, DDD, and sound database practices. Collaborate within Agile/Scrum teams, write automated tests, support CI/CD releases, build proof-of-concepts, and work across legacy and modern systems. The role requires strong communication, ownership, adaptability, and effective collaboration with distributed engineering and quality teams.

Design, build, and maintain cloud-native .NET microservices on Azure/AKS. Implement Istio service mesh, containerization (Docker), and observability. Troubleshoot distributed systems, optimize performance, and support enterprise Treasury applications in an Agile/Scrum environment.

Develop, install, test, monitor, and maintain business applications and software systems. Design and deploy new applications and enhancements, analyze system performance, resolve technical issues, optimize code and queries, and implement technology improvements. The role requires full-stack .NET development, containerization, SQL Server reporting and integration expertise, and modern front-end experience. It may lead junior associates and requires onsite work near Birmingham, Atlanta, or Charlotte.

Leads the design, development, and operationalization of scalable enterprise applications using C#/.NET and React/TypeScript. Responsibilities include architecting backend services and frontend features, conducting code reviews, establishing engineering standards, optimizing high-scale systems, integrating CI/CD and cloud deployments, leveraging AI-assisted development tools, collaborating with stakeholders, and mentoring engineers.

Develop and modernize two large enterprise DNA and forensics software products. Responsibilities include maintaining C# and VB.NET codebases, optimizing SQL Server stored procedures, managing data mapping, maintaining WinForms interfaces, implementing chain-of-custody business rules, meeting regulatory requirements, and troubleshooting complex systems with architects and QA.

Develop and maintain .NET applications while migrating authentication from ADFS to Okta. Analyze customer requirements, implement and test software, use DevOps tools to build and deploy applications, and maintain migration, implementation, testing, and user-story documentation. Collaborate with technical teams, project managers, business owners, customers, and users to deliver technically sound projects on schedule and budget. The role is fully remote and supports Department of Justice applications.

Designs, develops, maintains, integrates, and optimizes enterprise-level .NET applications. Responsibilities include backend development, application architecture, technical requirements, system integration, deployment, documentation, troubleshooting, infrastructure improvements, and technical support. The role collaborates with developers, business analysts, IT professionals, project managers, and stakeholders to deliver scalable, reliable solutions.

Develops, installs, tests, monitors, and maintains software applications and systems. Designs and deploys new applications and enhancements, resolves business system issues, analyzes performance, improves system effectiveness, and supports cybersecurity, compliance, and change management. The role requires full-stack experience with .NET, CI/CD, databases, authentication, and cloud-native deployment tools, while collaborating with technology teams and potentially leading junior associates.

Develops end-to-end web applications using .NET, C#, ASP.NET Core, modern front-end frameworks, SQL, GitHub Actions, and Azure services. Designs responsive interfaces, backend services, and relational data layers; deploys and supports applications in Azure; and identifies architectural improvements. Collaborates with cross-functional teams, uses AI-assisted development tools, resolves complex client problems, and may acquire requirements and optimize workflows through automation.

Design, develop, test, and support scalable enterprise applications using C#, .NET, Angular, microservices, REST and GraphQL APIs, cloud platforms, and DevOps practices. Build responsive SPAs, secure backend services, integrations, databases, and event-driven solutions. Participate in architecture, code reviews, Agile ceremonies, and cross-functional collaboration while mentoring junior developers and promoting engineering best practices. The role requires strong enterprise development experience and residence near Indianapolis, Indiana.

Design, develop, configure, test, debug, troubleshoot, document, monitor, and implement software systems. Analyze and resolve complex defects and incidents, define technical requirements, coordinate resources, lead initiatives, mentor junior engineers, provide technical guidance, and work independently on well-scoped and ambiguous problems. The role requires delivering complete solutions incrementally while contributing to software design strategies and collaborating with business and technical teams.

Develops and maintains .NET web applications, interprets project requirements, creates technical documentation, tests applications and data, follows software standards, supports implementation and contingency planning, communicates project status, collaborates with business analysts and stakeholders, and researches emerging technologies. The role requires extensive C# and .NET experience, MVC and JavaScript framework expertise, documentation and testing experience, and proficiency with Microsoft Office and SharePoint.

Design and build scalable enterprise applications in C#/.NET (APIs, microservices) and integrate AI capabilities (Python, LLMs, RAG, vector DBs, agentic frameworks). Own CI/CD, Azure DevOps workflows, containerized deployments, and collaborate across teams to deliver AI-enabled operational automation and agent integrations.

Develops, tests, debugs, maintains, and enhances complex financial software applications using .NET technologies. Translates technical and functional specifications into technical designs, resolves architectural issues involving scalability, performance, reliability, usability, and security, and contributes to development standards and strategic technical planning. The role is performed onsite Monday through Friday in Lincoln, Nebraska.

Develop and maintain web-based applications using .NET/C#, JavaScript, HTML/CSS, SQL and Oracle/SQL Server. Perform root cause analysis, collaborate with teams for requirements, follow Agile SDLC, present change demonstrations, and use Azure DevOps/Jira for lifecycle management. Implement and maintain Blazor components.

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.

Senior .NET Software Engineer responsible for end-to-end software development using Microsoft technologies. Requires extensive experience in SDLC, design principles, technical documentation, web application development with .NET, Agile/SCRUM, Entity Framework, database design, and version control. Familiarity with project tools JIRA, TEMPO, Bitbucket, and Confluence preferred.

Leads hands-on software implementation across risk, AI ingestion, compliance, and client-facing platforms. Designs and ships C#/.NET services, REST APIs, React and TypeScript applications, and contributes to Python and LangGraph agentic systems. Establishes engineering standards for code reviews, testing, CI/CD, Azure and Kubernetes deployments, and observability. Mentors engineers, participates in architecture and ADR reviews, and guides integrations with Microsoft Fabric while working across Azure and on-premises environments.