Top C# Jobs in Phoenix, AZ

Design, develop, maintain, test, and debug embedded software for aerospace and avionics systems using C/C++. Collaborate with cross-functional teams on requirements, architecture, hardware integration, software lifecycle processes, and certification activities under DO-178 standards. Support high-quality deployment of complex safety-critical systems, communicate technical concepts to stakeholders, and contribute to software testing, integration, and continuous improvement.

Design, develop, test, deploy, and support features for a distributed, event-driven avionics SaaS platform using C#, Azure, microservices, containers, and DevOps practices. Responsibilities include implementing automated unit, functional, contract, and canary tests; diagnosing production issues; and participating in occasional off-shift support. The role requires collaboration within an agile software engineering team and is based in Phoenix, Arizona, on a hybrid schedule.

Develop cross-platform C++ and Qt software for network device discovery, monitoring, and data collection across Windows and Linux. Build high-performance, concurrent, asynchronous systems that communicate with thousands of devices using SNMP, SSH, ICMP, WMI, and related protocols. Own testing, troubleshoot issues across application, operating-system, and network layers, optimize reliability and performance, and collaborate with backend, UI, QA, and product teams.

Develop and maintain embedded software for aerospace products through the full software lifecycle. Responsibilities include requirements analysis, design, C++ coding, testing, deployment under DO-178B guidelines, Linux application porting, documentation, and collaboration with cross-functional teams. The role focuses on real-time concurrent execution, multicore environments, OS synchronization, and Linux scheduling algorithms.

Designs, develops, tests, debugs, and maintains embedded software for aerospace avionics systems. Collaborates on software requirements, architecture, hardware integration, and certification activities while following DO-178 processes. Supports high-quality deployment of safety-critical systems, including EGPWS and related terrain-awareness technologies. The role is hybrid in Phoenix, with full-time onsite work required during the first 90 days and travel up to 10%.

Develop and test safety-critical embedded C++ software for aerospace flight display systems. Responsibilities include requirements, design, coding, testing, deployment under DO-178B, Linux application porting, documentation, and collaboration with cross-functional teams. The role requires addressing real-time concurrent execution in multicore environments and supporting high-quality, reliable avionics products from a hybrid Phoenix location.

Develop scalable C++ software that defines and enforces endpoint behavior across millions of managed Windows endpoints. Responsibilities include implementing features, improving platform performance, shipping production code, designing new systems, writing architecture documents, defining subsystem contracts, and collaborating with server, UI, product, and design teams. The role requires deep Windows systems and kernel-driver expertise, with preferred experience in WHQL, minifilter or WFP drivers, macOS Endpoint Security, and Linux kernel development.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Develop and support Veeam Backup for Microsoft 365, collaborate across product development, and help plan and implement product features. The role requires strong C# expertise, knowledge of algorithms and data structures, relational database development, and public cloud experience. Familiarity with Windows, Linux, Exchange, SharePoint, Office 365, event-driven systems, and commercial software products is advantageous.

Design, develop, integrate, and validate mission-critical embedded avionics software using C/C++ and Python in deterministic RTOS environments. Integrate aircraft subsystems, implement avionics communication protocols, and ensure compliance with DO-178B/C, ARP4754, and safety requirements. Manage requirements traceability, testing, documentation, and continuous integration using Jira, Bitbucket, Confluence, Bamboo, and IBM Rational DOORS. Provide technical mentorship and collaborate across engineering teams to develop next-generation cockpit platforms.

Develop and integrate C/C++ ground support equipment software, simulators, test tools, and core applications in a Linux-based classified environment. Responsibilities include requirements and design documentation, testing, peer reviews, configuration management, hardware/software interface support, system integration, deployment, and troubleshooting. Higher-level duties may include technical leadership, mentoring, schedule support, and customer or program discussions. The role is fully onsite in Chandler, Arizona, requires an active Secret clearance, and follows a 9/80 schedule.

Design and develop scalable C++ software for endpoint state and control across Windows, macOS, and potentially Linux. Build reliable, multi-process systems that enforce endpoint behavior, manage local state, support IPC, and operate across millions of devices. Responsibilities include implementing features, improving platform performance, writing design documents, defining architecture and IPC contracts, and making technical decisions in an evolving, sparsely documented environment.

Develop and test systems-level C++ software that defines and enforces endpoint behavior. Initially, the engineer will own testing infrastructure and coverage for two active projects, then contribute to feature development. The role requires strong C++ fundamentals, automated testing experience, and interest in operating-system concepts such as processes, file systems, services, and APIs. Work includes learning unfamiliar systems, collaborating effectively, and supporting reliable endpoint security and management capabilities.

Designs and validates electromagnetic interference and compatibility compliance from component through system level. Responsibilities include modeling interference coupling and shielding, conducting and troubleshooting EMI/EMC and RF tests, developing test apparatus and procedures, analyzing test data, preparing qualification reports, and supporting technical, cost, and schedule performance. The role requires occasional travel, off-shift work, and collaboration across engineering teams. Candidates must be U.S. citizens able to obtain and maintain Top Secret clearance and SCI access.

Design, implement, test, and modernize backend services and integrations (TypeScript/Node.js and C++). Lead large projects, write technical specifications and API contracts, enforce coding standards, coach engineers, and drive legacy-to-modern migrations within online banking and core systems.

Leads and develops a software engineering team while contributing hands-on to enterprise application design, coding, testing, code reviews, production support, and technical decisions. Builds scalable solutions using C#, ASP.NET, SQL Server, and modern web technologies; partners with product and business stakeholders; supports Agile delivery, CI/CD, troubleshooting, root cause analysis, and engineering best practices. The role also includes mentoring engineers, monitoring delivery and operational metrics, and driving continuous improvement.

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 modernization of a 30-year-old Store Management System by reverse engineering EZC file-based platforms, migrating data and applications to PostgreSQL, and developing enterprise C/C++ software. Responsibilities include architecture, systems integration, APIs, ETL, performance optimization, troubleshooting, documentation, and maintaining business continuity. The role also applies AI-assisted development tools for code analysis, documentation, testing, and modernization while mentoring teams and supporting legacy and modern environments.

Build and validate reinforcement-learning tasks for AI agents exploring unfamiliar C repositories. Responsibilities include investigating runtime behavior, rewriting engineering questions, refining rubrics and foils, running validation workflows, documenting solutions, and addressing expert review. Work focuses on production systems such as PostgreSQL, Redis, OpenSSH, OpenSSL, and other foundational C codebases.

Leads hands-on full-stack development across architecture, implementation, testing, deployment, and support. Designs secure, scalable C#/.NET and Angular applications, cloud integrations, APIs, and data solutions on AWS. Guides developers, establishes engineering standards, manages CI/CD and automated testing, troubleshoots complex issues, and drives cloud optimization, security, and technical debt reduction. Collaborates with product, architecture, DevOps, analytics, and project teams while supporting migration of on-premises applications to AWS.

Lead a development team while remaining hands-on in full-stack engineering. Design, build, test, deploy, and support secure web applications using C#/.NET, Angular, databases, and AWS. Drive cloud migrations, architecture, CI/CD automation, application security, troubleshooting, performance and cost optimization. Mentor developers, establish engineering standards, lead technical delivery, and collaborate with product, data, DevOps, and architecture teams.

Lead end-to-end development of secure, scalable web applications and data solutions supporting clinical trial operations. Design frontend and backend components using C#/.NET, Angular, AWS, and relational or non-relational databases. Guide architecture, testing, deployment, CI/CD, security, cloud optimization, and regulatory compliance. Mentor developers, oversee technical delivery, troubleshoot complex issues, and lead migration and modernization of on-premises applications to AWS.

Design, build, test, and maintain full-stack web applications using .NET/C# and SQL. Optimize T-SQL, create technical documentation, write user stories, conduct unit testing, estimate work, and collaborate with users and teams for enhancements and issue resolution.

Design, implement, test, and maintain Windows software components using C, C++, and C#. Collaborate across QA, UX, product, and DevOps to evolve product architecture, support full-stack components (database, server, web), use source control and CI/CD, participate in Agile ceremonies, and apply generative AI tools throughout the development lifecycle.

The role involves developing and maintaining C# and SQL code for healthcare EDI processes, focusing on client implementations and claims payment systems.