872 api developer jobs at 320 companies in Washington
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Senior API Developer
Tacoma, Washington, United States
$100k-$160k/yr OnsiteFull Time
7+ YOE7+ years API development experience, strong API design and security knowledge, proficiency with Java/Python/JavaScript and frameworks, CI/CD and testing experience, DoD clearance preferred.
Java, Python, JavaScript, Spring, Flask, Node.js, OAuth 2.0, JWT
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Sr Software Engineer - Backend API Platform
Seattle, Washington, United States
$125k-$229k/yr OnsiteFull Time
6+ YOE6+ years backend/platform engineering experience building scalable user-facing APIs; expertise in identity and access models, API design, operational excellence, and mentoring engineers.
Node.js, TypeScript, Kubernetes, AWS, OIDC, Keycloak, SPIFFE, mTLS
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Staff Software Engineer, API Platform
San Francisco or Seattle
OnsiteFull Time
12+ YOE5+ Mgmt12+ years technical experience,5+ years strategic technical leadership,experience with API design and infrastructure,proficient in Java/Ruby/Python/Go,strong communication and problem-solving skills.
Java, Ruby, Python, Go, Kafka, Kubernetes
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Senior Software Engineer, API/SDK
Seattle, Washington, United States
$191k-$253k/yr OnsiteFull Time
8+ YOE8+ years software engineering with customer-facing responsibilities; strong in API design, distributed systems, cloud and container platforms, CI/CD, multiple languages (Python, Java, Go, C++); must be a U.S. Person.
Python, Java, Go, C++, CI/CD, Docker, Kubernetes, AWS, Azure, GCP, REST, gRPC, GraphQL, WebSockets, message queues
3mo
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Software Engineer, API SDK
San Francisco or Seattle or New York City
$293k-$385k/yr HybridFull Time
7+ YOE7+ years of professional engineering experience; experience building SDKs; design and implement SDKs for multiple languages; collaborate across teams.
Python, Node.js, Golang, Java, Ruby, SDK generation
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Senior Software Engineer - API Platform & Client Tooling
Bellevue or Livingston or New York City or San Francisco or Sunnyvale
$153k-$204k/yr OnsiteFull Time
Production Go experience, API design and versioning, client tooling/SDK/CLI or provider work, code-generation or compiler/tooling experience preferred, cross-team collaboration and mentorship.
Go, gRPC, protocol buffers, Buf, ConnectRPC, Terraform Plugin Framework, Cobra, CWIC
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Sr. Software Engineer II, Platform/API
Chicago or California or Colorado or Florida or Georgia or Illinois or Indiana or Minnesota or Missouri or Montana or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or South Carolina or Texas or Utah or Vermont or Virginia or Washington or Wisconsin or country_code
$140k-$190k/yr HybridFull Time
6+ YOE6+ years building and operating backend services; Node.js, TypeScript, SQL, Docker, Kubernetes, cloud, event-driven architecture, and workflow reliability expertise. Bachelor's or master's degree or equivalent experience.
Node.js, TypeScript, Kafka, Google Cloud Pub/Sub, SQL, Docker, Kubernetes, Google Cloud Platform, Codex, Cursor, Claude Code, Statsig
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Software Engineer - Workspaces
Bellevue, Washington, United States
$160k-$230k/yr OnsiteFull Time
3+ YOE3+ years of hands-on software development; strong full-stack web development, API design, security, performance, and scalability; knowledge of AI is a plus.
Go, React, Java, APIs, Web technologies
3w
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Java/J2EE Developer
Seattle, Washington, United States
OnsiteFull Time
Bachelor's degree or equivalent experience; experience with Core Java, J2EE, Spring Boot, Spring MVC, REST APIs, Angular or React, software development life cycle, testing, integration, and production support.
Java, J2EE, Spring Boot, Spring MVC, REST API, Angular, React, Microservices, Oracle Database, Confluent Kafka, AI, cloud, SDLC
5d
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Mulesoft Developer
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States
$54k-$196k/yr OnsiteFull Time
3+ YOERequires 3+ years software development, 2+ years API development and Git/Agile/testing, 1+ year MuleSoft development, MuleSoft Developer Level 1, and a bachelor's degree or equivalent experience.
Anypoint Platform, Anypoint Studio, Mule Runtime, DataWeave, MUnit, Git, SOAP, REST, XML, JSON, YAML, Anypoint MQ, API Manager, Anypoint Exchange, CloudHub, Salesforce, SAP, Workday, Oracle Cloud Applications, ServiceNow, CI/CD, AWS, Azure, Flex Gateway, Model Context Protocol (MCP), GenAI, HL7, FHIR, Boomi, Informatica, SnapLogic, Workato
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application developer senior- Seattle, WA
Seattle or Nashville
$108k-$207k/yr HybridFull Time
4+ YOE2+ Mgmt4–10 years software development experience, technical leadership, API and integration experience, COTS customization, mentoring skills, bachelor's degree preferred.
APIs, COTS
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Siemens Opcenter Discrete Senior Developer
Seattle, Washington, United States
$160k-$180k/yr OnsiteFull Time
10+ YOEBachelor's degree in computer science, 10+ years of experience, Siemens Opcenter MOM and MES development, discrete manufacturing expertise, APIs, integration, OPC-UA, PLC/SCADA, Agile, and customer management skills.
Manufacturing Execution Systems (MES), Siemens Opcenter MOM, Siemens Opcenter EX FN, APS, MOM Connect, IPL, Mendix, APIs, middleware, messaging queues, OPC-UA, PLC/SCADA, Agile, PLM, ERP, SLA, KPI
3mo
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Software Engineer II
Seattle, Washington, United States
$135k-$189k/yr OnsiteFull Time
3+ YOE3+ years software development, strong Python and TypeScript, React, AWS, APIs, CI/CD, DevOps, and collaboration.
Python, TypeScript, React, AWS, APIs, CI/CD, DevOps, microservices, IaC
5d
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Mulesoft Developer
New York City or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Seattle or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$54k-$196k/yr OnsiteFull Time
3+ YOERequires 3+ years software development, 2+ years API development and Git/Agile/testing, 1+ year MuleSoft experience, MuleSoft Developer Level 1 certification, and a bachelor's degree or equivalent experience.
Anypoint Platform, Anypoint Studio, Mule Runtime, DataWeave, MUnit, Git, Java, XML, JSON, YAML, Anypoint MQ, API Manager, Anypoint Exchange, CloudHub, Salesforce, SAP, Workday, Oracle Cloud Applications, ServiceNow, AWS, Azure, Flex Gateway, Model Context Protocol (MCP), Boomi, Informatica, SnapLogic, Workato
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TikTok Shop - Customer Solutions Engineer, Apps and API
Seattle, Washington, United States
$116k-$209k/yr OnsiteFull Time
3+ YOEBachelor's in CS or related,3+ years in solution/solution engineering or pre-sales,proficiency with RESTful APIs,experience with e-commerce/ERP/OMS/PIM/WMS integrations,strong communication and business acumen.
RESTful API, ERP, OMS, PIM, WMS
3w
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Software Development Engineer II
Mountlake Terrace, Washington, United States
$92k-$157k/yr HybridFull Time
1+ YOEBachelor's in CS/IS,1+ year software development experience,experience with Appian and Microsoft Power Platforms,exposure to cloud,APIs,Agile and automated testing;strong communication and problem-solving skills.
Appian, Microsoft Power Platforms, Facets, API
4d
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Senior Software Engineer, Platform/Backend
United States or Austin or San Francisco or New York City or Seattle or Bellevue or Los Angeles or Chicago or Gurugram or Delhi or Bengaluru
$170k-$230k/yr RemoteFull Time
6+ YOERequires 6+ years of software development experience, API product development using Python or Golang, strong analytical and problem-solving skills, and familiarity with RDBMS, Docker, AWS, and Agile methods.
Golang, Python, PostgreSQL, Amazon RDS, OpenSearch, Docker, AWS, AWS Lambda, Amazon Cognito, RDBMS, API
2mo
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AI Solutions Engineer
Spokane, Washington, United States
$89k-$134k/yr HybridFull Time
4+ YOEBachelor's in software/AI/Data Science or equivalent; 4+ years related experience (3+ years software/AI development); experience with generative AI APIs (OpenAI, Anthropic, Google), REST APIs, CI/CD, Python required; willing to travel ~10%; valid driver's license; pass drug test.
Anthropic Claude, OpenAI GPT4, Google Gemini, REST API, EMR/EHR, PACS, CI/CD, GitHub Actions, Jenkins, Azure DevOps, GitLab CI, Python, JS, R, DevOps, Microsoft Outlook, Microsoft Office Suite, Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Workday, Webex, Smartsheet
2mo
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Software Engineer, X-Scientist
South San Francisco or Seattle or London
$140k-$215k/yr OnsiteFull Time
Strong Python engineering; experience building production libraries/CLIs/APIs/SDKs/backend services or workflow systems; familiarity with LLM application development, tool calling, and orchestration; strong communication and collaboration skills.
Python, LLM, API, CLI, SDK, PubMed, UniProt, AlphaFold, PDB, DepMap
3w
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OutSystems Developer
Bellevue or Dallas or Denver or New York City or Pasadena or Wichita
$100k-$130k/yr OnsiteFull Time
3+ YOEBachelor's degree or equivalent experience; 3–5 years of software development experience with OutSystems, REST APIs, SQL, relational databases, HTML, CSS, and JavaScript. Agile and SDLC knowledge required.
OutSystems, OutSystems Service Studio, Integration Studio, REST APIs, API Connectors, SQL, HTML, CSS, JavaScript, Microsoft Azure, Microsoft SharePoint, Microsoft Power Apps, Microsoft Power Automate, Microsoft Power BI, Microsoft Dataverse, Microsoft 365, Microsoft Teams, Git, CI/CD
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