Software Engineer Jobs in Bellevue, WA

Design, build, and own backend services and APIs in .NET Core on AWS to power ContextGPT integrations. Drive partner and data-center integrations, resolve scaling challenges, improve performance and reliability, and take end-to-end ownership from design through production operations while collaborating with internal teams and external partners.

Design, build, and operate large-scale distributed systems and data products for identity infrastructure, collaborating with various teams to enhance performance and reliability.

Lead and own observability tooling for the Auth0 platform: design, build, and maintain metrics, logs, and traces infrastructure. Provision and monitor cloud-native services, automate operational tasks with Terraform, Datadog, and OpenTelemetry, troubleshoot performance, participate in incident response, and drive cross-team initiatives while mentoring junior engineers.

The Senior Software Engineer will lead the design and development of Windows desktop applications, enforce best practices, drive accessibility efforts, and collaborate with cross-functional teams throughout the software lifecycle.

Lead design and development of Windows desktop applications, ensuring performance, accessibility, and cross-version compatibility while mentoring engineers and collaborating across teams.

As a Senior Software Engineer, you will build and maintain foundational services, optimize functionality, and collaborate on cross-platform SDK projects.

Lead design and ownership of scalable data domains, build and maintain data pipelines (Airflow, Snowflake), drive platform engineering and cost-conscious cloud architecture on AWS, champion AI-assisted development, mentor engineers, ensure operational excellence, automate toil reduction, and guide cross-functional stakeholders.

Lead development of VALORANT build and developer-facing platforms. Improve iteration workflows across local development, Unreal build/cook systems, CI, release infrastructure, and tooling. Drive architecture and long-term initiatives, resolve cross-system bottlenecks, collaborate with stakeholders, mentor engineers, and participate in support rotation.

The Senior Engineer will design, develop, and support scalable Oracle EPM planning solutions and collaborate with FP&A and data teams to enhance financial planning capabilities.

Lead enterprise RPA architecture and platform modernization, design scalable API-first automation, define engineering standards and reusable frameworks, integrate AI-assisted engineering, mentor teams, and advise executives on automation strategy and governance to improve reliability and delivery.

Lead full‑stack engineering efforts to architect and build front-end and back-end systems, integrate LLMs, RAG pipelines and AI agents, drive technical strategy, collaborate with customers and founders, and ship production AI-enabled features.

The Sr Software Engineer designs, implements, and deploys software solutions, collaborates on technical projects, and mentors others while driving innovation in technology strategies.

As a Senior Backend Engineer at eBay, you will design and implement software for shipping, collaborating with cross-functional teams to address logistics challenges and improve delivery solutions.

Design and build scalable, distributed server/cloud systems using C/C++ and C#/Java; apply ML, data/process modeling, and automation to optimize logistics and resource allocation. Collaborate in large teams, debug complex systems, and adapt quickly to new technologies.

The Software Engineer will develop integrations and middleware for radar technology, ensuring interoperability and real-world deployment while collaborating with field engineers. Responsibilities include rapid prototyping, backend and frontend development, and supporting field deployments.

The Senior Software Engineer will design and build data-focused products, engage in system-level optimizations, and contribute to distributed systems and machine learning for high-performance computing.

Lead design and build full‑stack payment services (Authorize.Net) in an agile team. Architect, develop, optimize OLTP systems, write quality C#/.NET code, implement unit tests/CI, profile performance, and collaborate with technical and nontechnical teams in a production ecommerce environment.

Build web and client tools to process and visualize computer-vision data from the Microsoft Pix app, verify app scenarios (automated and manual), and support research and tooling for data collection and analysis.

The Staff Software Engineer will design and build custom solutions focusing on scalability, optimize data processes, and enhance client applications while collaborating with cross-functional teams to drive innovation in programmatic advertising.

Design, build, and optimize deployment automation and developer tooling for microservices on Kubernetes. Develop CLIs, dashboards, and automation; implement monitoring with Prometheus/Grafana; collaborate with SRE, Infrastructure, and Security; prototype new technologies; and mentor junior engineers while improving onboarding and deployment processes.

Build and evolve developer productivity infrastructure and tooling (Bazel, IDEs, Cloud Workspaces) using modern AI capabilities. Design, implement, and operate distributed systems, improve build systems, and collaborate cross-functionally to boost developer velocity and reliability.

Lead the architecture of core data processing systems for Snowflake, focusing on distributed systems and high-performance data transformation, ensuring efficiency and reliability at scale.

Develop backend applications, APIs, and integrations while ensuring scalability and stability. Collaborate in Agile teams and maintain quality code through testing.

The Senior Platform Engineer will design, develop, and scale core systems for an AI-driven analytics platform, focusing on performance and customer impact.