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345 senior backend engineer jobs at 140 companies in Washington

1mo
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Senior Backend Engineer
Cary or Washington
$162k-$238k/yr OnsiteFull Time
Epic Games
Epic Games: Developer of video games and real-time 3D creation tools.
4+ YOE4+ years building secure, scalable web applications; experience with backend Java/Scala, frontend frameworks, cloud, and relational/NoSQL databases.
Java, Scala, AWS, MongoDB, Dynamo, Redis, React, Vue, Angular
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Senior Backend Engineer
Seattle, Washington, United States
$160k-$220k/yr OnsiteFull Time
Aurelian
Aurelian: Private AI software helping U.S. 911 centers automate non-emergency calls and support emergency call-takers.
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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2mo
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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: Private B2B SaaS providing AI-powered cloud communications software for business sales and support teams.
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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1w
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Senior Backend Engineer, Experimentation
United States or 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
$163k-$264k/yr RemoteFull Time
LaunchDarkly
LaunchDarkly: B2B feature-management software helping engineering teams safely manage code releases and AI agents in production.
6+ YOERequires 6+ years of software engineering experience, backend production systems expertise, Go or comparable language skills, distributed systems and data-intensive product experience, cloud operations, and observability practices.
Go, Python, Rust, C++, ClickHouse, Postgres, Snowflake, Redshift, BigQuery, Databricks
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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: Private AI software and GPU-cloud helping developers and enterprises build, train, deploy, and run AI systems.
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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2mo
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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: Public fintech and payments helping businesses manage fleet fuel, employee benefits, and corporate payments.
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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3w
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Senior Backend Software Engineer
San Francisco or Los Angeles or Washington or San Diego or Seattle or London
$140k-$240k/yr OnsiteFull Time
CHAOS Industries
CHAOS Industries: Redefining modern defense with a multi-product portfolio.
Backend and cloud engineering role requiring scalable distributed systems experience, production ownership, and ability to obtain and maintain U.S. security clearance; U.S. Person status required.
Microsoft Azure, Python, Terraform, Kubernetes, TypeScript, React
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2mo
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Senior Backend Engineer
Seattle, Washington, United States
$167k-$230k/yr OnsiteFull Time
Otter
Otter: Restaurant POS software for restaurant operators that unifies ordering, payments, delivery apps, and kitchen operations.
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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2mo
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Senior Backend Engineer
Seattle, Washington, United States
$167k-$230k/yr OnsiteFull Time
Otter
Otter: Restaurant POS software for restaurant operators that unifies ordering, payments, delivery apps, and kitchen operations.
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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Senior Backend Software Engineer
Arkansas or California or Colorado or District of Columbia or Florida or Illinois or Massachusetts or Maryland or Maine or Michigan or New Jersey or Ohio or Pennsylvania or South Carolina or Texas or Utah or Virginia or Washington
$165k-$195k/yr RemoteFull Time
SITE Technologies
SITE Technologies: AI-powered facility intelligence platform helps commercial, industrial, and retail property owners assess assets and plan maintenance.
5+ YOE5+ years backend development experience with Python and FastAPI, strong backend architecture, relational modeling, AWS services, Docker, CI/CD, and cross-team communication.
Python, FastAPI, PostgreSQL, SQLAlchemy, Alembic, Flyway, AWS, ECS, Lambda, RDS, S3, IAM, Docker, Git, CI/CD, GitHub Actions, AWS CodePipeline, Claude Code, Cursor, Terraform, Terragrunt, Datadog, Sentry, LangGraph, Claude Code SDK, Amazon Bedrock
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Principal Backend Engineer- Admin Workflows
Seattle, Washington, United States
$190k-$210k/yr HybridFull Time
Yoodli
Yoodli: Yoodli is an AI communication-coaching platform helping teams and professionals practice high-stakes conversations through roleplays and feedback.
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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Backend Engineer
California or Colorado or Georgia or Idaho or Illinois or Kansas or Massachusetts or Maryland or Michigan or Minnesota or New Jersey or New York or Ohio or Oregon or Pennsylvania or Rhode Island or Texas or Washington
$180k-$220k/yr RemoteFull Time
Unit21
Unit21: Private AI risk-infrastructure helping banks and fintechs detect fraud and manage anti-money-laundering operations.
5+ YOE5+ years in data/software engineering, experience with large-scale data processing, advanced SQL, Python/OOP, cloud platforms, and infrastructure-as-code (Terraform).
Apache Spark, Databricks, Flink, Beam, Python, SQL, AWS, Azure, Google Cloud, Terraform
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Senior Software Engineer, Backend
Bellevue, Washington, United States
$160k-$210k/yr HybridFull Time
Cognitiv
Cognitiv: AI advertising helping brands and advertisers target consumers with deep-learning media-buying technology.
Senior backend engineer experienced with .NET Core (or similar), AWS, building partner integrations, scaling distributed systems, strong ownership, communication, testing focus, and operational excellence.
.NET Core, Java, Kotlin, AWS, RDS, ClickHouse, Datadog, CI/CD, ContextGPT
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2mo
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Senior Backend Engineer - Java
United States or Tampa or Boston or Atlanta or New York City or Columbus or Chicago or Philadelphia or Raleigh or Charlotte or Minneapolis or Dallas or Washington D.C. or Austin or Miami or Newark
$152k-$194k/yr RemoteFull Time
The Real Brokerage
The Real BrokerageTSXV: REAX: Real is a technology-enabled residential real estate brokerage serving agents, home buyers, and sellers.
8+ YOE8+ years experience with Java/Spring Boot, JPA/Hibernate, relational databases; experience designing event-driven microservices, strong testing practices, AI-assisted development familiarity, BA/BS or equivalent.
Java 17, Java 21, Spring Boot 3.x, JPA/Hibernate 6, Postgres, Kafka, DynamoDB, Redis, OpenSearch, AWS, Docker, Kubernetes, Datadog, ArgoCD, TeamCity, Claude Code, Cursor, Codex, Model Context Protocol (MCP), GitHub, SonarQube
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2mo
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Senior Backend Engineer | On-Site | Seattle
Seattle, Washington, United States
$120k-$200k/yr OnsiteFull Time
Grid
Grid: U.S. fintech app helping consumers access cash advances, build credit, optimize taxes, and manage paycheck finances.
Experience building and operating production backend systems (preferably in Go on GCP), strong data-driven development skills, familiarity with distributed/event-driven systems, and SQL proficiency.
GCP, Go, protobufs, BigQuery, MySQL, Spanner, SQL, Pub/Sub
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Backend Engineer
San Francisco or New York City or Austin or Seattle
$175k-$300k/yr OnsiteFull Time
Fluidstack
Fluidstack: Building and operating civilization-scale data center infrastructure for AI.
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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2w
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Senior Staff Backend Engineer (Pricing)
Seattle, Washington, United States
OnsiteFull Time
Coupang
CoupangNYSE: CPNG: We exist to wow our customers.
8+ YOE8+ years in software design and development; bachelor's in computer science, engineering, or related field; distributed systems and large-scale platforms experience; English communication skills.
Java, Spring Boot, AWS, Kubernetes, Docker, Kafka, Flink
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2w
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Senior Staff Backend Engineer (Pricing)
Mountain View or Seattle
$174k-$299k/yr OnsiteFull Time
Coupang
CoupangNYSE: CPNG: We exist to wow our customers.
8+ YOE8+ years in software design and development; bachelor's degree in computer science, engineering, or related field; distributed systems and large-scale platforms experience; strong English communication skills.
Java, Spring Boot, AWS, Kubernetes, Docker, Kafka, Flink
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1w
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Senior Backend Software Developer
United States or Washington
$135k-$190k/yr RemoteFull Time
Slate
Slate: Private Oregon van-conversion serving professionals, explorers, and commercial vehicle operators.
6+ YOEBachelor of Science in Computer Science or equivalent experience; 6+ years software development and programming experience; 6+ years AWS/Azure experience; 4+ years architecture, SDLC, and system design experience.
TypeScript, Python, Java, AWS, Azure, LLM technologies
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4d
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Senior Software Engineer, Backend - Emerging Products
Seattle or San Francisco or New York City
$168k-$280k/yr HybridFull Time
Rippling
Rippling: Unified workforce management platform for HR, IT, and Finance.
5+ YOERequires 5+ years in production backend engineering using Python, Go, or similar languages; expertise in distributed systems, data modeling, relational databases, performance optimization, algorithms, and complex project delivery.
Python, Go, Slack, Microsoft 365
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