Top Software Engineer Jobs in Seattle, WA

Build and own the graph layer and RAG architecture enabling agent reasoning over full patient context. Select graph DBs, design query patterns, and ensure temporal coherence. Implement event-driven Kafka pipelines for auditable, immutable agent workflows and enforce ReBAC permissions. Prioritize safety and scalable AI-assisted workflows, participate in spec and plan reviews, and drive architecture decisions.

Lead the technical direction and architecture of the Foundations platform team, owning authentication, authorization, SSO, secrets management, tenancy, and core platform services. Design APIs, drive services through launch, make technical decisions, establish engineering standards, and mentor engineers without formal management authority. Partner with engineering and product leaders to align execution with priorities.

Design and develop scalable backend systems using Kotlin, Micronaut, and Spring. Build RESTful APIs, optimize PostgreSQL and Elasticsearch databases, implement RabbitMQ-based asynchronous processing, integrate AI tools, and create automated tests. Deploy and monitor services on GCP using Docker, Kubernetes, and Terraform. Collaborate cross-functionally, participate in code reviews, troubleshoot performance issues, and deliver reliable backend products.

Build and maintain high-performance, resilient SDKs across multiple programming languages and platforms. Develop features, improve reliability, collaborate with engineering and product teams, maintain open-source repositories, and influence technical and product decisions. The role requires strong software engineering fundamentals, polyglot development ability, library-building experience, production-quality coding, and expertise in unit, integration, load testing, and benchmarking.

Leads the design, development, and maintenance of complex backend software systems. Owns significant features end to end, makes architectural decisions, improves scalability and performance, ensures code quality, mentors engineers, and collaborates with cross-functional teams. Builds production-ready C# and .NET APIs within microservices and containerized environments, using cloud databases and services. Participates in code reviews, testing, debugging, and continuous improvement.

Design and build robust backend services and secure APIs for finance and reader applications. Implement authentication, payments, subscriptions, and finance workflows. Design Postgres/Redis schemas, integrate with financial APIs (BSE Star MF, NSE) and DRM services, and ensure compliance-friendly data handling.

Build Nitra Business Banking backend infrastructure, including account opening, payments, ledgers, transaction processing, reconciliation, APIs, and financial integrations. Design reliable money movement across ACH, wires, RTP, and FedNow while ensuring auditability and financial correctness. Partner with sponsor banks and processors, make architecture decisions, document systems, identify risks, and mentor engineers. The role also integrates banking capabilities with cards, BillPay, expense management, accounting, and healthcare payment products.

Design, build, and operate backend services supporting external penetration testing, including Python APIs, workflow orchestration, ETL pipelines, AWS data lakes, GraphQL and graph APIs, Kubernetes infrastructure, and observability systems. Own service performance, scalability, uptime, deployment, and production operations while collaborating with product, design, and frontend teams. Contribute to architecture, technical documentation, platform stability, and user-facing launches.

Build and operate batch transcription and streaming ASR API services across four global regions. Responsibilities include API design, model integration, authentication, rate limiting, versioning, documentation, multi-region deployment, monitoring, incident response, high-concurrency architecture, streaming protocols, async pipelines, autoscaling, and cost optimization. The role also supports B2B customers and collaborates with algorithm and product teams on the developer platform roadmap.

Build and operate production APIs and backend systems for music and audio AI products. Partner with research engineering to productionize model improvements, design systems that support future model upgrades, and develop creator-facing features. Engineers own product decomposition, legal and safety considerations, launch planning, and collaboration with growth, design, and enterprise customers. The role is remote-first across Europe or the US East Coast, with Central European timezone availability required.

Design, develop, deploy, and operate distributed backend systems supporting large-scale, low-latency online model inference. The role owns inference platform technical direction, scalability, reliability, observability, and cloud infrastructure on GCP and Kubernetes. Responsibilities include partnering with ML engineers, optimizing high-throughput services, implementing DevOps and SRE practices, and monitoring production systems with Prometheus and Grafana.

Lead the architecture and development of LiveRamp’s petabyte-scale backend activation platform. Build distributed data pipelines using Spark, Dataproc, SingleStore, Kubernetes, streaming systems, and workflow engines. Drive multi-tenant scheduling, performance, cost optimization, reliability, observability, and production excellence. Define technical strategy, lead complex initiatives, mentor engineers, collaborate cross-functionally, and adopt AI-enhanced development and operations practices.

Lead complex backend engineering initiatives from ambiguous problem definition through production. Architect scalable, reliable systems supporting AI-driven workflows, real-time inference, tool orchestration, and long-running processes. Build new systems, evolve existing architecture, make technical decisions, and own testing, deployment, observability, and operations. Partner with product and design, provide technical leadership, mentor engineers, and raise engineering standards while remaining hands-on in implementation.

Build, architect, and own moderate-to-complex backend components; lead small teams or projects; provide technical guidance and code reviews; deliver end-to-end backend services focused on AI-enabled customer data insights, onboarding, messaging/calling features, and scalable data management for a growing user base.

Design, develop, deploy, and maintain secure, scalable Java and Spring Boot services for a multi-tenant ecommerce SaaS platform. Build REST APIs, optimize MySQL data access, operate AWS workloads, and support CI/CD, observability, testing, and production troubleshooting. Contribute to architecture and technical decisions, mentor engineers, use AI-assisted development tools responsibly, and help maintain PCI DSS compliance.

Develop, scale, and maintain core backend APIs within a TypeScript/NestJS monolith for supply chain modules (OMS, WMS, MES). Implement secure payment and logistics integrations, caching with Redis, async/event-driven workflows, and observability (OpenTelemetry, Prometheus, Loki). Support AI agent orchestration and ensure transactional integrity using PostgreSQL.

Build reusable backend platforms and developer-facing tooling for performance testing, analysis, reporting, and AI-assisted engineering workflows. Enable service teams to independently incorporate performance testing into development and CI workflows through self-service capabilities, documentation, templates, diagnostics, and guidance. Partner with engineering teams, influence adoption, generalize solutions, and provide expertise on complex performance challenges.

Design and implement backend services, modernize legacy systems into microservices, ensure strong testing and production observability, and collaborate with Product and Engineering teams. The role requires independent project ownership, strong system design, AI-assisted development using tools such as Claude or Cursor, effective communication with nontechnical stakeholders, and adaptability in an ambiguous, fast-changing environment.

Senior backend engineer responsible for designing and implementing new features, scaling and optimizing the platform, improving Postgres and Elasticsearch performance, fine-tuning LLMs, and making architectural decisions. Collaborate with engineering team, take ownership of features, write performant, maintainable code, and help shape product and infrastructure for data-intensive applications (NLP, search, indexing).

Design and scale Cohere’s Model Vault backend and inference platform. Lead architecture for authentication, deployments, billing, metering, customer lifecycle, and cloud control-plane services. Build reliable distributed systems with strong guarantees for security, privacy, consistency, isolation, observability, and failure recovery. Drive technically complex initiatives from threat modeling and architecture through implementation, production rollout, operations, and iteration at enterprise scale.

Build, maintain, and scale e-commerce backend services using Python and Django. Develop REST APIs and features for catalogs, inventory, carts, checkout, orders, payments, and accounts. Integrate third-party services, optimize databases and performance, implement security controls, write tested code, resolve production issues, and collaborate on architecture, planning, reviews, deployment, and CI/CD.

Develop backend satellite operations software using Python and AWS, build and troubleshoot APIs, integrate containerized deployments (Docker/Kubernetes), use IaC (Terraform), collaborate in Agile teams, and contribute to generative AI integrations, DevSecOps, CI/CD, and architecture to support scalable, secure mission operations.

Design and implement scalable backend services for MoneyGram’s core transaction and API platforms. Responsibilities include architecture, microservices, APIs, event-driven systems, integrations, cloud development, CI/CD automation, testing, deployment, operational excellence, and engineering standards. The role collaborates with product, engineering, and QA teams, mentors junior engineers, leads complex technical solutions, and influences technical direction in an agile environment.

The Senior Software Engineer will design and develop backend systems and APIs, mentor other engineers, and resolve complex integration challenges in healthcare technology.

Design, implement, and maintain scalable, secure, high-performance backend systems and public-facing APIs. Collaborate with Product and Data Science teams, lead initiatives improving efficiency and system performance, and support customer satisfaction. Work may involve distributed systems, pricing engines, identity management, authentication, authorization, API versioning, deprecation, and rate limiting.