Top Senior Software Engineer Jobs in Phoenix, AZ

Designs and delivers enterprise-grade AI-first full stack applications for Master Data Management. Develops Java backends, React or Angular frontends, REST APIs, microservices, data models, and integrations. Leads architecture, debugging, testing, performance, scalability, code reviews, Agile ceremonies, and technical direction. Uses and evaluates AI coding tools, mentors junior engineers, and collaborates with product, UX, QA, and platform teams.

Design, build, and operate a production AIOps agent platform for event observation, diagnosis, recommendations, and controlled automated actions. Develop agent runtimes, tool interfaces, event routing, telemetry, auditability, evaluation systems, feedback mechanisms, and operator experiences. Establish safety guardrails, approvals, permissions, rollback controls, and reliability standards. Collaborate across engineering, operations, security, risk, and compliance to deliver scalable, explainable, and regulated production capabilities.

Design, develop, test, document, and maintain software applications. Act as technical lead across full development lifecycle, perform code reviews, troubleshoot production issues, support UAT/production, mentor engineers, and implement automated testing and deployment practices.

Design, build, and optimize scalable front-end features for global ticketing platforms. Provide technical leadership, write RFCs, mentor developers, perform code reviews, ensure performance and security, support releases and incidents, and collaborate cross-functionally to deliver high-performance B2B and customer-facing applications.

Leads software engineering initiatives, including strategic planning, design, coding, testing, debugging, documentation, upgrades, and deployments. Develops and integrates Java APIs using SOAP, REST, and JSON; evaluates technical challenges; resolves complex issues; and supports Agile, CI/CD, and DevOps practices. Acts as a project lead and escalation point, mentors less experienced staff, and collaborates with technical peers and managers.

Lead technical efforts to build reliable applications and infrastructure at Oscar, mentoring junior engineers and collaborating on complex projects.

As a Senior Software Engineer, you will build and maintain applications and infrastructure for health care, collaborating with team members to solve problems and improve technology.

Develop and maintain complex desktop UI applications using WPF and/or Silverlight. Lead GUI/UX design, implement .NET/C# application architecture, integrate with databases via ADO.Net/ODBC/Oracle SQL, and implement WCF services. Support reporting frameworks (Sharpshooter, Telerik, SSRS) and contribute to debugging and Visual Studio-based development.

Develop and sustain mission-operational software product lines and new capabilities across multiple subsystems. Write advanced object-oriented C++ code on Red Hat Enterprise Linux, participate on Agile teams, use DevSecOps and test automation practices, and collaborate with stakeholders to solve complex national-security engineering problems. Position requires travel for training and maintenance of required security clearances.

Support customers using PCIe and USB products by reviewing schematics, providing PCIe driver debugging and development guidance, answering field sales and customer questions, producing application notes, knowledgebase articles, software examples and implementation manuals, identifying enablement gaps, and writing high-level requirements to improve customer experience.

Develop, debug, test, and support cloud-based applications. Design, implement, and consume RESTful APIs, build elegant user interfaces, perform unit/integration/system testing, conduct in-depth peer code reviews, take ownership of components, and collaborate with the development team.

Design, build, and maintain CRM+ features using C#, .NET, Vue, and SQL Server on Azure. Architect scalable services, use AI tools (Claude Code) in development, write well-tested code, mentor engineers, influence product and technical strategy, operate CI/CD, troubleshoot production issues, and collaborate cross-functionally.

Design, develop, and maintain secure, scalable APIs and backend services for digital payment experiences. Collaborate with product, UX, and engineering teams to translate requirements into microservices-based solutions; drive architecture, code quality, CI/CD, observability, and operational excellence; mentor engineers and stay current on emerging technologies to improve platforms and customer experiences.

The Staff Software Engineer leads design and modernization of payment systems, mentors engineers, drives architectural decisions, and ensures high-quality software delivery.

Lead the design and development of an expense management platform, mentor engineering teams, and collaborate with stakeholders on product requirements.

The Senior Software Engineer will lead the design and development of an expense management platform, mentoring teams, integrating technologies, and ensuring project milestones are met efficiently.

The role involves mentoring junior engineers, directing software design and development, writing automated unit tests, and collaborating with teams to enhance software quality and efficiency.

Design and develop web components, drive innovation in digital channels, analyze and modify software, mentor teams, and ensure code quality.

Design, prototype, and evaluate quantum algorithms for finance; build and maintain quantum software libraries and simulators; collaborate with scientists and engineers to integrate quantum solutions; publish research and present technical findings internally and at conferences.

Lead design and delivery of highly available, low-latency full‑stack and distributed systems. Drive architecture, code quality, CI/CD, incident resolution, and mentor engineers. Build React/TypeScript UIs, Java/Node microservices, event-driven APIs, and evaluate AI-enabled tooling and automation.

Design, develop, test, debug, and document embedded real-time software (C/C++) on Linux and RTOS platforms. Collaborate with hardware engineers for integration, follow full software lifecycle, ensure standards, and perform troubleshooting and validation in lab environments.

The role involves designing, developing, and delivering connected fleet solutions, while participating in code reviews, automation, and documentation. Requires full-stack development skills and experience with cloud services.

Develop and lead embedded avionics software for CNS/airborne surveillance systems. Lead RFIO SW dev team, integrate SW with HW/FPGA, follow DAL A/DO-178C processes, prepare planning and certification documentation, support flight tests, manage risks, and use development tools (version control, CI, Jira/Bitbucket).

Lead design and delivery of cloud-based, production-grade systems for new healthcare enterprise products. Build proofs-of-concept into scalable integrations with EHRs, devices, and AI-powered features (speech/LLM). Coordinate cross-team engineering work, set technical standards, mentor engineers, and drive adoption of AI-assisted development while ensuring reliability, security, and compliance.

The Senior Software Engineer will lead the design, development, and deployment of a scalable SaaS product, collaborate across teams, mentor others, and ensure code quality and sustainability in software solutions.