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363 backend engineering jobs at 136 companies in Seattle, WA

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Backend Engineer
Seattle, Washington, United States
$160k-$175k/yr HybridFull Time
FlowPlay
FlowPlay: Develops and publishes social casino games and virtual worlds.
5+ YOE5+ years Java backend experience, proficiency with MySQL, EMR not referenced, familiarity with cloud (AWS or GCP), RESTful API design, version control (SVN/Git); Bachelor's in CS or related preferred.
Java, Spring Boot, MySQL, AWS, GCP, RESTful API, Apache SVN, Git, Docker, Kubernetes, PostgreSQL, Oracle, NoSQL
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2w
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Senior Backend Engineer
Seattle, Washington, United States
$160k-$220k/yr OnsiteFull Time
Aurelian
Aurelian: AI-powered voice automation for 9-1-1 non-emergency calls.
4+ YOE4+ years software engineering experience, strong engineering fundamentals, autonomy, and ability to build reliable, low-latency backend systems for voice and AI pipelines.
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Principal Backend Engineer- Admin Workflows
Seattle, Washington, United States
$190k-$210k/yr HybridFull Time
Yoodli
Yoodli: AI-powered platform for communication coaching and roleplay simulations.
8+ YOE8+ years building and operating scalable backend services, cloud infrastructure experience, proficiency in TypeScript or Python, distributed systems and API design, strong communication and mentorship skills.
TypeScript, Python, Google Cloud Platform (GCP), AWS, Azure, Kubernetes, NoSQL
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2mo
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Software Engineer - Backend
Seattle, Washington, United States
$130k-$170k/yr HybridFull Time
Avante
Avante: AI-powered platform for managing employee benefits and data.
3+ YOE3+ years backend software engineering; TypeScript; PostgreSQL; API design; experience with external integrations; strong communication.
TypeScript, PostgreSQL, APIs, HRIS integration
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2mo
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Engineering Manager, Backend Platforms
Los Angeles or San Francisco or Seattle or United States or United Kingdom or Ireland or Poland or Germany or Australia
$280k-$330k/yr HybridFull Time
Whatnot
Whatnot: Social marketplace for buying and selling via live streams
10+ YOE7+ Mgmt10+ years platform/infrastructure engineering experience with 7+ years managing engineering teams; strong backend systems knowledge; hands-on credibility with Python, Elixir, or Go; exceptional communication and leadership.
Python, Elixir, Go
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2mo
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Staff, Back-end engineer [FEX]
Seattle, Washington, United States
OnsiteFull Time
Coupang
CoupangNYSE: CPNG: Provides an end-to-end e-commerce and logistics network.
10+ YOE10+ years backend engineering; Java/Spring; AWS; distributed systems; high throughput/low latency.
Java, Spring Framework, AWS, Cassandra, MySQL, Temporal, Netflix Conductor
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1mo
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Backend Engineer, Flag Delivery
Oakland or San Francisco or New York City or Boston or Seattle or Irvine or Los Angeles or Monterey or Santa Barbara or Santa Rosa or Austin or Portland or Philadelphia or Chicago or United States
$146k-$235k/yr OnsiteFull Time
LaunchDarkly
LaunchDarkly: Provides a feature management platform for software development teams.
5+ YOE5+ years backend engineering experience building/operating production distributed systems; strong programming in Go/Java/Rust; production debugging, observability, on-call experience; clear AI usage in engineering work.
Go, Java, Rust
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1d
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Senior Backend Engineer
Bellevue, Washington, United States
$162k-$238k/yr OnsiteFull Time
Epic Games
Epic Games: Develops video games and licenses the Unreal game engine.
4+ YOE4+ years building secure, scalable web services; backend development in Java/Scala; front-end framework experience; cloud (AWS); relational and NoSQL database knowledge.
Java, Scala, AWS, Mongodb, Dynamo, Redis, React, Vue, Angular
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2mo
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Senior Software Engineer, Backend - RQL
Seattle or San Francisco
$168k-$280k/yr OnsiteFull Time
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
6+ YOE6+ years backend engineering experience; experience with distributed systems, distributed processing engines, big data technologies, mentoring developers, and building data platforms.
Python, MongoDB, CDC, Kafka, Aurora, Trino, Presto, Pinot, Iceberg, Flink, Rippling Query Language (RQL), Microsoft 365
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5d
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Senior Backend Engineer, Managed Kubernetes & Slurm
New York City or San Francisco or Seattle
$180k-$250k/yr HybridFull Time
Lightning AI
Lightning AI: Unified platform to build, train, and deploy AI models.
Significant experience building and operating production backend systems with Go or Python, deep Kubernetes or Slurm knowledge, distributed systems, networking, observability, CI/CD, and production incident response.
Go, Python, Kubernetes, Slurm, Terraform, Crossplane, Helm, Argo CD, Flux, Kustomize, gRPC
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1mo
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Senior Backend Engineer
Madrid or Paris or Seattle or London or Berlin or San Francisco or New York City or Sydney or Mexico City
HybridFull Time
Aircall
Aircall: Cloud-based business phone system and customer communication platform.
6+ YOE6+ years backend development with a typed language (TypeScript preferred), production AWS experience, infrastructure-as-code (CloudFormation or Terraform), security-first mindset, serverless experience, GraphQL a plus, on-call rotation and mentoring experience.
TypeScript, AWS, CloudFormation, Terraform, GraphQL
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Backend Software Engineer, AI Infrastructure for SDLC - Engineering Efficiency
Seattle, Washington, United States
$148k-$301k/yr OnsiteFull Time
TikTok
TikTok: Global short-form video hosting and social media platform.
2+ YOEBachelor's in CS or related,2+ years backend development,proficiency in Go/Java/Python,experience with distributed systems,databases/caching/messaging,LLM/AI integration experience,strong communication and ownership.
Go, Java, Python, MySQL, Redis, Kafka, CI/CD, LLM, RAG
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1mo
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Senior Backend Engineer – AI Platform
Boston or San Francisco or Seattle or Dallas or Salt Lake City or Portland or United States
$122k-$146k/yr RemoteFull Time
WEX
WEXNYSE: WEX: Provides global payment processing and business information management services.
5+ YOEBachelor's in CS/Software Engineering, 5–8 years software engineering experience; expertise in backend Java/C# (SpringBoot), REST/gRPC, SQL; experience building scalable distributed systems and AI/LLM-driven services.
Java, C#, SpringBoot, REST, gRPC, ODATA, SQL, OpenAI APIs, LangChain, Python, Kafka, Docker, Kubernetes, Model Context Protocol (MCP), Pinecone, Weaviate, OpenSearch, Milvus
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Backend Engineer
San Francisco or New York City or Austin or Seattle
$175k-$300k/yr OnsiteFull Time
Fluidstack
Fluidstack: Provides high-performance cloud GPU infrastructure for AI development.
Experience building production services, observability, API and control-plane design, API-first infrastructure, incident response/pager duty, and familiarity with AI tooling and distributed systems.
LLM APIs, MCP servers, Claude Code, Cursor, Prometheus, Thanos, VictoriaMetrics, Temporal, Cadence, BMC/Redfish, Go, Python, Postgres, Kubernetes
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2mo
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Backend Software Engineer - Saga
New York or Seattle or Arlington or Rosslyn
OnsiteFull Time
Rune Technologies
Rune Technologies: Develops AI-powered logistics and sustainment software for military operations.
4+ YOE4+ years backend software engineering; experience with GenAI systems, vector databases, LLM integrations, and evaluation harnesses; strong problem solving and ownership.
GenAI, vector databases, LLM integrations, RAG architectures, tool-call frameworks, production-grade software
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1mo
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Senior Backend Engineer
Seattle, Washington, United States
$167k-$230k/yr OnsiteFull Time
Atoms
Atoms: Building robotics and software to automate physical world industries.
Proficiency in Java; experience with PostgreSQL, MongoDB, Redis; experience with AWS/GCP/Azure; knowledge of RESTful APIs, microservices, and distributed systems; strong debugging and problem-solving skills.
Java, PostgreSQL, MongoDB, Redis, AWS, Google Cloud, Azure, RESTful APIs
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1mo
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Senior Backend Engineer
Seattle, Washington, United States
$167k-$230k/yr OnsiteFull Time
Otter
Otter: Software for restaurants to manage and grow online orders.
Proficiency in Java; familiarity with PostgreSQL, MongoDB, Redis; experience with AWS, Google Cloud, or Azure; understanding of RESTful APIs, microservices, and distributed systems; strong debugging and problem-solving skills.
Java, PostgreSQL, MongoDB, Redis, AWS, Google Cloud, Azure, RESTful APIs, microservices, distributed systems
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3mo
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Backend Senior Software Engineer
Austin or Bellevue
$111k-$172k/yr HybridFull Time
Visa
VisaNYSE: V: Global payment technology facilitating electronic funds transfers.
2+ YOESenior backend engineer with a bachelor's or master’s in STEM and 2+ years (or 5+ yrs directly) of related experience; strong coding and problem-solving skills.
Java, C++, HTML, CSS, JavaScript, Python, C#, PHP, Angular, React, Kubernetes, Docker, APIs, SQL
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2mo
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Senior Backend Engineer (Canada)
Seattle, Washington, United States
RemoteFull Time
Loot Labs
Loot Labs: Platform for unboxing and trading digital and physical collectibles
5+ YOE5+ years backend experience; strong TypeScript; AWS (DynamoDB, Lambda, S3, AppSync, Cognito, SQS); GraphQL; CI/CD; security; observability
DynamoDB, Lambda, S3, AppSync, Cognito, SQS, SST, TypeScript, GraphQL, CI/CD
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Staff Backend Engineer, Custody Core (Crypto Security)
San Francisco or Seattle or New York City or Frisco or Cottonwood Heights or Helena or Jacksonville
$154k-$264k/yr OnsiteFull Time
SoFi
SoFiNasdaq: SOFI: Mobile-first platform for banking, lending, and investment services.
7+ YOE7+ years backend engineering experience building distributed, highly available services; strong REST, async messaging, cloud (AWS) experience; production debugging and incident response skills.
AWS, PostgreSQL, Redis, Kafka, Fireblocks, BitGo, Anchorage
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