Top Senior Software Engineer Jobs in Seattle, WA

The Software Engineer will enhance the structured data storage layer in Superhuman Docs, ensuring database reliability, performance, and correct data handling under varying workloads. Responsibilities include improving table management, server-side query planning, and collaborating on formula and sync processes.

The Backend Engineer designs and operates critical scalable services, evaluates product requirements, applies best practices, and collaborates with teams to ensure high-quality solutions at Snap Inc.

Lead the design and implementation of distributed software systems, focusing on chatbot and search functionalities, while mentoring engineers and collaborating with cross-functional teams.

The Back-End Engineer will design and build core platform services, operate production services, and work on AI-powered features while collaborating with cross-functional teams and mentoring junior engineers.

As a Front-End Software Engineer, you will build AI-powered interfaces, tackle complex design problems, and collaborate across teams to enhance user experiences. Responsibilities include mentoring, implementing responsive UI, and engaging with AI technologies.

As a Software Engineer, you will design, develop, and deploy a reliable financial platform, focusing on performance and security while collaborating with teams to ensure high-quality code and infrastructure.

Build end-to-end fullstack features for a mental healthcare platform: design APIs and UIs, manage clinical and practice-management systems, integrate AI capabilities, and own product outcomes from schema to frontend.

Design and build reliable backend services powering clinical data, insurance billing, patient-facing infrastructure, and financial ledger systems. Scale high-integrity systems requiring idempotency, strong consistency, and pragmatic AI integration to automate provider workflows and enable personalized patient experiences.

Design, develop, and operate a greenfield, cloud-native full‑stack platform for ingesting, streaming, processing, and visualizing high-volume sensor and time-series data. Build frontend and backend features, APIs and streaming pipelines, integrate with DAQ hardware, support CI/CD, observability, databases, and mentor team members while collaborating with stakeholders to define roadmap and deliver production-ready systems.

Design, build, and modernize full-stack, cloud-native applications integrating AI/ML/LLM capabilities. Implement APIs, microservices, event-driven systems, CI/CD, tests, and observability. Mentor teammates and collaborate with product, data science, and architecture to deliver production-ready solutions.

Design, implement, and maintain real-time data acquisition and processing systems for high-throughput sensor and time-series data. Develop native and web/CLI applications, interfaces to DAQ hardware, streaming APIs, visualization tools, and CI/CD/infrastructure. Provide technical leadership, engage stakeholders, and own features from prototype to production.

Develop and implement cloud-based microservices for supply chain workflows. Ensure scalability, reliability, and performance of backend services, while collaborating across engineering teams and establishing API contracts.

Develop and maintain cloud-based web applications using modern technologies, collaborate with teams, and ensure secure software delivery processes.

As a Senior Software Engineer, you'll develop scalable distributed systems for Chewy's Sponsored Ads platform, mentor engineers, and enhance engineering excellence.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

Design and implement high performance iOS applications, ensure code quality, and utilize AI tools for scalable mobile services. Requires extensive experience in software development, especially with iOS and Objective-C.

The role involves leading the design and development of software engineering tools for the E-7A program while enhancing DevSecOps operations. Responsibilities include collaborating with teams, providing support, and ensuring software environments are maintained.

As a Senior Full-Stack and Platform Software Engineer at mabl, you will develop features for an AI-powered test automation platform, enhancing user experiences, designing APIs, and optimizing data pipelines while collaborating with cross-functional teams.

As a Billing & Analytics Software Engineer, you'll design and maintain the billing pipeline, integrate billing systems, and develop customer-facing analytics dashboards to support revenue recognition and operational observability.

Design and build large-scale systems for managing merchandise, ensuring data synchronization across platforms, and collaborating with cross-functional teams to support enterprise-level sellers.

Design and re-architect the Identity systems at Dropbox to support multi-product capabilities, mentor junior engineers, and ensure software excellence.

The Software Engineer will enhance developer experience at Benchling by building production release tooling, improve workflows, and collaborate with teams to scale processes. Responsibilities include developing efficient development tools and championing engineering patterns.

Seeking a Software Engineer/Senior Software Engineer to design, develop, and deliver quality backend services and APIs using Go, with emphasis on Kubernetes and cloud services.

The Principal Software Engineer will define technical roadmaps, guide system architecture, mentor leaders, and drive product direction in Capital Supply operations.

Design and implement CIAM backend services for authentication and authorization. Integrate identity systems, manage secure flows, and automate infrastructure.