Top Senior C# Jobs in Houston, TX

Build and optimize high-volume web applications using .NET, Node, React and AWS; maintain and improve existing systems; troubleshoot bugs; perform code reviews; mentor junior engineers; participate in on-call rotation; and improve scalability and performance.

The Senior Software Development Engineer will develop applications using modern programming languages, provide leadership and mentoring, ensure software quality, and lead software improvement initiatives.

Lead quality efforts across backend services, APIs, and customer-facing apps. Design and implement automated test frameworks, build custom tooling and load testing solutions, improve testing pipeline scalability, mentor engineers, and apply GenAI/LLMs to testing and test-generation challenges.

Lead design and rewrite of cloud-native core systems. Build scalable back-end services and front-end features, drive architecture and testing discussions, mentor engineers, and improve telemetry, performance, and reliability.

Lead refactoring and optimization of scalable data pipelines, design next-generation distributed storage and processing systems, build clean interfaces for diverse data consumers, mentor engineers, and establish engineering standards and processes.

Enhance and refactor an existing WinForms MES application integrating ERP and PLM systems, improve architecture for future development, deliver data collection, dashboards, and shop-floor functionality to support a paperless facility.

Full-stack .NET developer focused on front-end integration for customer-facing websites. Work includes C#/ASP.NET, WCF, Web API/REST, SQL/stored procedures, and UI development with JavaScript, Angular, Bootstrap, and Knockout. Collaborate with business and BAs and provide tooling guidance.

Develop, enhance, and support Windows desktop upstream scientific business applications. Collaborate with engineers and geoscientists, troubleshoot global client issues, apply OOP patterns, write testable code, and participate in UI and web application development.

Design, configure and develop Microsoft Dynamics CRM solutions; gather and document business requirements; perform architecture, integration and deployment; lead design sessions; mentor staff; work with Azure, SharePoint and MS BI; follow Agile practices and communicate status with customers.

Design, architect, develop, configure, integrate, validate and deploy Microsoft Dynamics CRM solutions. Gather and document business requirements, lead architecture sessions, mentor staff, and support CRM interoperability with Office365, SharePoint, Azure and MS BI.

Design, architect, develop and deploy Microsoft Dynamics CRM solutions. Capture and document business requirements, integrate CRM with Microsoft stack, lead client design sessions, mentor staff, and manage project delivery using Agile practices.

Design, develop, and maintain cross-platform and native mobile applications using .NET/C# and Xamarin. Perform architecture/design reviews, implement REST/SOAP interfaces, follow agile processes (JIRA), manage configuration (SVN/GIT), and support large-scale enterprise rollouts (MDM). Work in large teams; energy domain experience required.

Partner with business stakeholders to gather requirements, design and configure Salesforce and SiteTracker solutions, build Apex/LWC/Flows, support integrations and testing, deploy changes, and provide production support and continuous improvements.

Build and maintain the full-stack Raise product: polished donor-facing UIs and backend systems. Own features end-to-end, ensure scalability, reliability, and performance, review AI-generated code, collaborate with Product and Design, write clean testable code, and support observability and incident resolution.

Design, develop, test, review, and maintain high-availability EMS and grid automation software (load flow, contingency evaluation, state estimation, operator training simulators). Apply power system modeling, simulation, optimization, and numerical methods; collaborate in Agile teams across Linux and Windows; troubleshoot technical issues and ensure regulatory compliance.

Lead development and implementation of advanced refinery blending application solutions, collaborate with product, sales, and manufacturing, provide technical customer support, troubleshoot complex issues, drive continuous improvement, and present technical solutions to stakeholders.

Lead development and implementation of advanced refinery blending application solutions. Collaborate with product, sales, and manufacturing teams, provide technical customer support, troubleshoot complex process control issues, drive continuous improvement, and present technical solutions to stakeholders to improve application performance and customer satisfaction.

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 front-end-focused full‑stack development for a multi‑tenant SaaS online banking platform. Build reusable component libraries, migrate legacy UI, optimize UI performance, troubleshoot across front-end and service layers, participate in on‑call rotations, mentor junior engineers, and ensure API‑first integrations and cloud‑native deployments.

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, 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, 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.

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.

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.

Develop, configure, integrate, and operationalize command-and-control (C2) and Common Operating Picture (COP) applications. Build workflow automation, event management, alerting, data fusion, dashboards, and operator-focused UX. Support testing, interoperability validation, demonstrations, and operational readiness while collaborating with systems engineering and stakeholders.