Top Senior Software Engineer Jobs in Phoenix, AZ

Design, develop, and deliver high-quality, secure production software. Lead feature design and implementation, author technical documentation, perform code reviews, troubleshoot production issues, support on-call escalations, and collaborate with cross-functional teams to improve scalability, reliability, and security.

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).

Develop and maintain software applications, utilizing Java and Spring Boot, while collaborating with teams to deliver complex features and ensuring code quality through Git and testing practices.

Design, build, and operate high‑scale, distributed backend systems for global ticketing. Optimize performance, reliability, and fairness under extreme traffic spikes; build API-driven services, mitigate fraud/bots, lead architecture and code reviews, mentor engineers, and collaborate with product and business stakeholders.

The Senior Software Engineer will develop foundational services and SDKs, optimizing cloud functions, backend services, and enhancing user experience through collaboration with product teams.

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.

Lead platform-level resiliency and developer enablement by building shared libraries, frameworks, tooling, and guardrails. Improve runtime safety, observability, logging/alerting, and systemic failure modes. Collaborate with architects and engineering leaders, engage in postmortems, prototype tools (including AI-assisted), and write production code focused on platform resiliency rather than customer-facing features.

Lead development and maintenance of React-based enterprise web applications; own architecture and code quality; mentor engineers; plan and estimate work; integrate vendor/customer hardware; modernize healthcare IT and continuously improve development processes.

Design, build, and maintain scalable backend services, APIs, automation, and internal developer platforms. Improve CI/CD pipelines, observability, and tooling; collaborate with frontend teams; lead technical designs, mentor engineers, and drive reliability and developer productivity across the organization.

Design, develop and execute end-to-end test plans, scripts and emulation for IoT platform components (devices, gateways, protocols, cloud). Define observability/instrumentation, produce quantitative metrics, and lead small technical teams to validate E2E data flows.

Maintain source and binary repositories, ensure builds, packaging, versioning and delivery to teams. Define SCM intake/workflows, automate build/CI processes, perform repo and JIRA administration, and develop scripts for packaging, releases and integration with CI/test systems.

The Senior Software Engineer will collaborate on project scopes, optimize functionality, and ship cloud functions and backend services using Kotlin, enhancing user experience.

Lead frontend modernization by migrating legacy web apps into a microfrontend ecosystem, ship production-critical React/Next.js code, define reusable platform patterns, and collaborate cross-functionally to ensure performance, developer experience, and long-term maintainability.

Modernize legacy IBM i/DB2 green‑screen systems into cloud-hosted, full‑stack applications. Design and build Angular front ends, .NET back ends, REST/GraphQL APIs, event-driven workflows, and scalable distributed systems. Improve reliability, observability, and mentor junior engineers while maintaining security and performance standards.

Own and set technical direction for the Everand backend, building scalable, reliable systems for discoverability, personalization, and core consumption journeys. Drive architecture, platform health (CI/CD, staging, DBs, queues, cost, observability), mentor engineers, lead cross-team planning, modernize legacy systems, and partner with product, design, analytics, web/mobile, and ML to support experimentation and telemetry-driven decisions.

Designs and implements automated test frameworks and CI/CD test integration for large-scale API, web, and mobile systems. Creates test strategies, executes automated and manual suites, reports and manages defects, mentors QA team members, and improves testing processes to ensure production quality and performance.

Design, build, and operate scalable, resilient cloud infrastructure and SRE tooling. Lead cross-team technical projects, mentor engineers, define SLOs and incident management, automate CI/CD and IaC, reduce failure domains, and own medium-to-large infrastructure features from design through delivery.

Design, build, and maintain cloud-native applications and distributed systems for semiconductor test operations. Manage hybrid infrastructure (cloud and on‑prem), Kubernetes clusters, CI/CD, automation, monitoring, and incident response. Provide architecture, operational support, documentation, and reliability improvements while ensuring security and compliance.

The Senior Software Engineer at Carvana will drive large-scale projects, develop scalable solutions, collaborate with teams, and mentor junior developers, primarily using C# and JavaScript technologies.

Design, develop, and maintain scalable backend services and APIs using Java, Spring Boot and Node.js. Contribute to architecture, implement cloud-native, containerized solutions on Kubernetes, apply observability, integrate systems, deliver AI-enabled features, mentor engineers, conduct code reviews and support production deployments within Agile teams.

Develop and optimize auto-labelling systems using ML and computer vision, manage data pipelines, and collaborate with researchers.

The Staff Software Engineer will develop and support product features, enforce coding best practices, mentor junior engineers, and contribute to architectural decisions in a fintech environment.

Design, develop, test, and maintain enterprise .NET full-stack applications using C#, Blazor, RESTful APIs, microservices, MongoDB/SQL Server and Kafka. Build CI/CD pipelines, participate in architecture and code reviews, troubleshoot production issues, mentor junior engineers, and evaluate/implement AI-assisted and LLM-enabled features while following secure development practices within Agile teams.