Software Engineer Jobs in Bellevue, WA

Design and implement runtime protocols, formats, and systems to capture, serialize, stream, and replay interactive 3D content across engines. Own C++ runtime and C# APIs across editor, build, simulation, streaming, and playback. Optimize for low-latency, determinism, memory and bandwidth constraints, and build AI interfaces for inspecting and invoking engine state.

Build and operate scalable data pipelines and feature datasets for ads ML. Own end-to-end offline flows from event ingestion to feature-ready datasets, develop batch and streaming systems, integrate feature store with online serving, improve observability and testing, and lead architectural decisions to ensure performance, correctness, and reliability at scale.

Lead design and delivery of scalable cloud services and full-stack features for a next-generation game creation platform. Build performant front-end and backend systems, optimize cloud scalability and performance, maintain CI/CD, monitoring and databases, apply agentic AI tools in development, drive technical direction, and collaborate with AI, infrastructure, and data teams.

Responsible for defining front-end technical vision, designing and delivering user-facing features, championing UX and performance, and building a unified design system of shared components and tokens to accelerate product delivery.

Senior Software Engineer responsible for designing, developing, and integrating Salesforce solutions for T-Mobile for Business. Builds Apex and JavaScript-based UI components (LWC/Aura), configures Salesforce CPQ, integrates via REST/SOAP, optimizes performance, mentors engineers, and collaborates with cross-functional teams to deliver scalable, highly available applications.

Lead development of on-device middleware and edge services (Rust/C++), integrate devices with AWS IoT Core and cloud services (Kinesis, S3, Lambda), design reliable disconnected-mode interfaces, implement AuthN/AuthZ and data privacy (X.509, IAM), collaborate with cloud tech lead, mentor engineers, and drive edge-to-cloud architecture and delivery in rapid R&D environments.

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.

Lead technical direction for Databricks Access Management: evolve the core authorization service, unify permission-checking across the platform, build fine-grained access controls (scoped service identities, delegated access, RBAC), implement network ingress access policy, and improve availability and reliability of a low-latency, high-throughput authorization service.

Lead technical vision and architecture for a partner-facing platform. Design scalable GraphQL/REST APIs, SDKs, micro-frontends, and developer tools. Contribute code (TypeScript/React, C#/.NET), establish standards for schema governance, security, observability, and Kubernetes operations. Coordinate cross-team integration, shape roadmaps, mentor engineers, and measure platform health and partner success.

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.

Technical lead responsible for designing and building cloud-native ingestion, processing, and visualization systems for edge radar fleets. Lead design of resilient, low-latency distributed systems, implement secure device authentication/authorization and data privacy, define device-cloud contracts with edge teams, research backend prototypes, and mentor engineering teams to deliver production customer-facing radar-cloud solutions.

Lead design and implementation of Robinhood's identity and access control plane. Build Tier-0, highly available identity infrastructure, implement AuthN/AuthZ protocols, define governance for AI/agentic workloads, enable self-service developer access, and provide technical leadership and cross-team mentorship.

Design, develop, and deploy complex features for AI-first products and customer interaction platforms. Collaborate with product and design, ensure scalability and reliability, mentor junior engineers, perform code reviews, and deliver enterprise-grade solutions in a fast-paced environment.

Design and optimize a low-latency real-time bidder and throttling layer, build the traffic-aggregation job, analyze billions of events with SQL, and apply interpretable gradient-boosted models to decide which requests to forward. Collaborate across the stack from production Node.js services to data pipelines and ML-driven rules.

Lead architecture, design, and delivery of highly available, secure backend services on Kubernetes/AWS. Define SLIs/SLOs, testing and rollout strategies, implement auth/mTLS integrations, drive cross-team architecture, mentor engineers, own on-call/ops readiness, and represent technical direction to leadership and customers.

This role involves owning aspects of data lifecycle for Auger's Supply Chain operating system, including schema design and data processing using AI and SQL.

The Principal Software Development Engineer will lead the data engineering team, develop data systems, ensure quality controls, and mentor engineers. Responsibilities include managing data lifecycle, implementing frameworks, and collaborating with cross-functional teams.

The Software Engineer II will develop optimization tools for advertising campaigns, enhance machine learning models, and improve bidding systems for real-time performance.

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

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.

Build and scale an LLM post-training platform: design public training APIs and SDKs, control plane and GPU data plane, implement multi-tenant scheduling and capacity-aware routing, optimize end-to-end performance and throughput, and productionize research components for reliable enterprise-scale training and inference.

Design and implement identity and access management and AI security capabilities, build scalable authorization frameworks, integrate modern authentication protocols and IdPs, enable secure data sharing and external application access, lead large projects, and drive high-quality code and design reviews.