Top Senior C# Jobs in Houston, TX

Lead, mentor, and grow a software engineering team to deliver high-quality, scalable microservice-based solutions. Manage Agile processes, collaborate with Product, enforce engineering best practices, and drive continuous improvement in architecture, quality, and team performance. Participate in hiring, backlog planning, and drive measurable improvements in engineering execution.

Design, develop, configure, and maintain OnBase solutions including Unity scripts, WorkView, and Unity Forms. Integrate OnBase with other systems via APIs, perform testing and troubleshooting, document configurations, collaborate with stakeholders, and deliver automation and system improvements.

Design, implement, and own complex features and services for a large-scale CPM platform. Lead technical design, build modern UIs, design APIs and JSON/XML contracts, drive performance and reliability improvements, mentor engineers, lead code reviews, contribute to CI/CD and production support, and responsibly employ AI-assisted development tools.

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, 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.

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.

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).

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.

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 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 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.

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.

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.

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.

The Lead Data Engineer will architect and develop a healthcare data platform on GCP, guiding teams in pipeline development, data modeling, and ensuring compliance with HIPAA. They will collaborate across functions, set technical directions, and mentor junior engineers.

The role involves developing computational models in C++. The candidate will collaborate with product owners and analysts and write unit tests, focusing on performance and design principles.

Develop and maintain legacy US commercial transactional applications to meet FERC 809 and NAESB 3.0 regulatory requirements. Work in a large-project environment using C/C++ and SQL Server, write stored procedures and SQL, and support a critical 6-month on-site contract in Houston.

The E&C Post Order Manager oversees supplier management and coordination activities to ensure timely delivery of materials and equipment, compliance with project specifications, and efficient resolution of claims and issues.

Design and implement scalable, high-performance web applications and microservices for a distributed content management SaaS platform. Collaborate in a cross-functional Scrum team, influence architecture, tune for scale, troubleshoot cross-browser/platform issues, mentor junior engineers, and deliver production-quality code.

Develop and optimize ultra-low-latency, high-performance trading infrastructure in modern C++. Implement and tune order execution, market data connectivity, multi-threaded systems, and risk modules. Profile and benchmark real-time systems, collaborate with quants and traders, and maintain robust, fault-tolerant continuous trading operations.