Back-end developer jobs in Seattle, WA

 ...signals, models, and AI capabilities into productionOwn projects end to end, from technical design and implementation through rollout...  ...reliability and latency requirementsExperience building APIs, developer platforms, or intuitive user interfaces for complex workflowsExperience... 

 ...Engineer for a confidential client — a well-funded AI platform company used by ML teams globally. In this role you will own features end to end across APIs, CLI tooling, billing systems, and platform integrations. The team is small and senior, the engineering bar is high... 

 ...GCP, Kubernetes, PostgreSQL, Firestore, Elasticsearch Integrate with enterprise systems (HRIS, ticketing, communication tools) Develop LLM orchestration logic and realtime agent interactions Ensure reliability through monitoring, debugging, and performance tuning... 

 ...company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing, training, and deploying AI systems—designed to take...  ...York City, San Francisco, Seattle, and London, and is backed by Coatue, Index Ventures, Bain Capital Ventures, and Firstminute... 

Fluidstack is seeking an experienced engineer to own the observability platform, design API surfaces, and build a production control plane. The role requires fluency with AI tooling, experience in API design, and the ability to work under ambiguity. Candidates will lead...

 ...Integration Key job responsibilities: Troubleshoot Java Reference architecture Development Review system flow diagrams Integrated front end with backend APIs Understand API calls/JSON connections Troubleshoot the code Backend Java, API development experience Very strong... 

 ...Force contract and expanded across government and commercial programs, raised a $17 million Series A led by FPV Ventures, secured backing from J.P. Morgan, and built software that operates across government and commercial environments, from unclassified work to Top Secret... 

 ...on experience) Harrison Clarke are partnered with a venture-backed AI infrastructure company building the financial operating system...  ...across product, data, and infrastructure to deliver features end-to-end. Help shape the next generation of a platform moving from... 

Global e-commerce is content e-commerce business with international short video product as the carrier. It is committed to becoming the first choice for users to discover and purchase good products with affordable prices. Global e-commerce business team hopes to provide...

 ...of API development experience in .NET Core, Node.js, or Spring Boot with a MS SQL or NoSQL database 4. Experience constructing, developing, and implementing microservices 5. Experience managing applications in an Azure DevOps environment 6. Experience with infrastructure... 

 ...Node.js (or similar backend languages) Experience working with databases (NoSQL preferred, e.g., MongoDB) Ability to own projects end-to-end and operate independently Strong communication skills across technical and non-technical teams Comfort working in a fast... 

 ...affordable and high-quality products more accessible, contributing to an improved quality of life for consumers.Responsibilities:- Develop efficient, highly scalable and secured services to build/integrate Supply Chain & Logistics system for domestic and global TikTok Shop... 

 ...ownership and communication; able to drive ambiguous projects end-to-end with PM, Algo, FE, QA, Design, Data, and regional business...  ...accredited and reputable institutions.- 5+ years of experience developing highly scalable backend services and systems using at least one... 

 ...enforcement, policy-driven review pipelines — and write high-quality code for critical paths.- Design and evolve IP protection systems end-to-end: rights-holder reporting and brand-protection platforms, notice-and-takedown workflows with SLA guarantees, and proactive... 

 ...ownership and communication; able to drive ambiguous projects end-to-end with PM, Algo, FE, QA, Design, Data, and regional business...  ...accredited and reputable institutions.- 7+ years of experience developing highly scalable backend services and systems using at least one... 

 ...influence how billions of gaming experiences are discovered, monetized, and how creators are rewarded.What you’ll be doingDesign, develop, and deploy production-grade backend services and distributed systems powering large-scale online model inference at billions of daily... 

 ...developmentFamiliarity with CI/CD pipelines and DevOps practiceBRINC Culture Values:Try the hard stuffBe innovative - Invent the futureMove fastListen to end-usersStrive for excellenceDon’t build a dystopiaBe frugalSave lives through technologyIf you’re interested in this role and in... 

 ...running a high-throughput SSP that processes hundreds of billions of real-time ad requests a day. You'll own complex, ambiguous problems end-to-end, apply an AI-first mindset to solve hard AdTech problems, and raise the bar for the team through code review and mentorship —... 

 ...generation to automated summaries that give providers their time back. The Insurance Billing Engine: We apply AI pragmatically (...  ...workflows, whether that's code generation, operational automation, or developer tooling. You bring a builder's mindset: what can we automate,... 

 ...company behind PyTorch Lightning. Founded in 2019, we build an end-to‑end platform for developing, training, and deploying AI systems—designed to take...  ...York City, San Francisco, Seattle, and London, and is backed by Coatue, Index Ventures, Bain Capital Ventures, and Firstminute... 

 ...experiences to Aritzia’s clients by leveraging technology to meet and exceed the vision and mission of the business. As a Senior Developer, Backend, Digital Technology, you will be responsible for designing, developing, implementing, and supporting Aritzia’s technology... 

 ...applicant via the e-mail address submitted at the application stage.Details to ConsiderThis job posting may be closed prior to the stated end date for application if all openings are filled.Coupang has the right to rescind an offer of employment if a candidate is found to... 

 ...highly scalable, fault-tolerant system from scratch that enables developers to write long-running, reliable workflows as code.At Coupang,...  ...healing capabilitiesWhat You Will DoArchitect from Zero: Lead the end-to-end design of a distributed workflow engine. You will Build... 

 ...our platform. Our mission is to build the end-to-end, scalable, and intelligent systems...  ...seller experience.What You Will DoDesign, develop, and automate large-scale, high-performance...  ...technologies, spanning front-end interfaces to back-end systems.A customer-first mindset, with... 

 ...delightful, trustworthy, and performant at scale.We own quality, developer experience, and platform foundations for Slackbot: what works...  ...intuition and experience who build systems and design APIs with the end user in mind.The OpportunityAs a Staff Backend Product Engineer,... 

 ...and applications platform. Snowflake started with a clear vision: develop a cloud data platform that is effective, affordable, and...  ...architects, other engineering teams, and business groups, to drive end-to-end solutions.Contribute to improving our engineering processes... 

 ...teams in a fast-moving environment. 10+ years of experience in developing and operating backend services and web applications. Experience...  ...Excellent communication skills to shepherd communication with end users, technical & business teams to collect requirements, describe... 

Who we are About StripeStripe, LLC. is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities...

 ...financial execution.Build workflows that trace financial values back to source evidence, surface unresolved gaps, and prevent downstream...  ..., customer-provided files, and inconsistent provider formats.Develop evals, testing harnesses, observability, and feedback loops to measure... 

 ...organizations, turning complex, manual processes into simple, one-click solutions. Our core product domains include:Device Management (MDM): Developing systems to securely enroll, configure, manage, and inventory corporate devices (macOS, Windows, iOS, etc.), including policy...