937 api jobs at 406 companies in Portage, IN
3w
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API Support Analyst I
Chicago, Illinois, United States
$65k-$75k/yr HybridFull Time
Provide first-line technical support for API products, communicate technical concepts to clients, troubleshoot integrations, and follow support workflows.
API, FIX
1mo
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Senior API Integration Engineer
Chicago, Illinois, United States
$153k/yr OnsiteFull Time
5+ YOEBachelor's degree, 5+ years backend experience (2+ years in integrations), strong Kotlin or Python skills, integration architecture and API expertise, GCP/Docker/Kubernetes experience, observability and security/compliance knowledge (SOC2, HIPAA).
Kotlin, Python, RESTful APIs, Google Cloud Platform (GCP), Docker, Kubernetes (k8s), BigQuery, Dagster, Datadog, Prometheus, Grafana, HL7, FHIR, DICOM, NetSuite, SAP, Airflow, Prefect, Superset, Looker
3d
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Senior Manager, API and Middleware Engineering
Chicago, Illinois, United States
$170k-$182k/yr OnsiteFull Time
8+ YOEBachelor's degree and 8+ years experience designing and leading enterprise API, middleware, and integration platforms with MuleSoft; strong vendor management, production support, API governance, and cross-team collaboration skills.
MuleSoft Anypoint Platform, Salesforce, CI/CD, DevOps
1mo
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Cloud & API Platforms Practice Lead (AVP)
St. Louis or Chicago or Boston or Houston or Dallas or Irvine or Minneapolis or Detroit or Alpharetta or New York City
$150k-$250k/yr OnsiteFull Time
10+ YOE5+ Mgmt10–15 years experience with 5+ years leading practices; expertise in Platform API and IBM Cloud solutions, hands-on consulting, GTM strategy, partner/channel relationships, AI delivery knowledge, and willingness to travel.
MuleSoft, Apigee, Boomi, Workato, TIBCO, Terraform, IBM Cloud
1mo
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Software Engineer, API
Chicago, Illinois, United States
$108k-$110k/yr HybridFull Time
3+ YOEBachelor's in CS/Engineering, 3+ years software development with API design, experience with Java, Spring Boot, AWS, OAuth/JWT, REST, Git, CI/CD, and testing frameworks.
RESTful Services, OAuth, JWT, Java, Spring Boot, AWS, Git, CI/CD
1w
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Senior Product Manager - API Management
Chicago, Illinois, United States
$141k-$183k/yr OnsiteFull Time
5+ YOEBachelor's degree;5+ years product management/API or application development experience;experience with integration/messaging architectures, API gateways, cloud platforms, vendor management, and roadmap delivery;authorized to work in the U.S. without sponsorship.
MuleSoft, Apigee, IBM APIC, Kong, TIBCO EMS, Solace, Confluent, RabbitMQ, Apache Kafka, AWS SNS, SQS, AWS, Azure, Google Cloud, REST, SOAP, JSON, OAS, RAML, MQTT, AMQP, XMPP, SMTP
2mo
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Visual Inspector - API 510/570/653
Joliet, Illinois, United States
$38-$61/hr OnsiteFull Time
2+ YOEAPI 510/570 certification required; 5–10 years' experience or 2+ years on-site; API 653 or CWI a plus; in-depth knowledge of API 510/570 and ASME; experience supporting petrochemical facility engineers.
2mo
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Visual Inspector - API 510/570/653
Joliet, Illinois, United States
$38-$61/hr OnsitePart Time
2+ YOEAPI 510/570/653 certification required (or CWI), 2+ years on-site inspection experience (10 years preferred), knowledge of API and ASME standards, petrochemical facility support experience.
V-Deck, drones, robotics
1mo
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Senior Software Engineer (Hogan API)
Hopkins or Atlanta or Chicago or Charlotte or Englewood or Brookfield or Irving
$120k-$141k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent and 5+ years relevant experience. Experience with mainframe/Hogan development (COBOL, JCL, CICS), APIs, system design, testing, security, and cross-team collaboration; Scrum familiarity.
Hogan COBOL, JCL, CICS, JSON, Splunk, IMS Database, GitLab, IDz/RDz (IBM Developer for zOS), Jira
3w
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Senior Account Executive - API Platform
Chicago or San Francisco or United States
$172k-$250k/yr OnsiteFull Time
5+ YOE5+ years full-cycle SaaS/API AE experience owning SME or mid-market, proven new-business pipeline, technical selling comfort, CRM discipline, and ability to navigate multi-stakeholder deals.
Salesforce, Synchronizer API, CRM, EHR, PMS, RCM
1mo
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Senior Software Engineer - Customer Integrations (API)
United States or New York City or Dallas or Austin or Houston or Chicago or Nashville or Miami or Atlanta
$140k-$160k/yr RemoteFull Time
3+ YOE3+ years building backend services with Go/Java/Python/C#; strong API design, SQL/PostgreSQL, cloud (AWS/Azure/GCP/OCI) and Terraform experience; professional software engineering experience and strong communication/system design skills.
Go, Java, Python, C#, SQL, PostgreSQL, AWS, Azure, GCP, OCI, Terraform
3w
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Lead Architect (Requiring AI and API Integration Experience)
Northbrook or Irving or Scottsdale or Chicago or Hartford
$118k-$261k/yr HybridFull Time
5+ YOEDesign end-to-end solution architectures for complex initiatives; deep API/microservices, cloud (GCP/AZURE/AWS), Kafka, and 5+ years design/development experience; 2+ years hands-on AI/ML (GenAI) experience; leadership and coaching skills.
Apache Kafka, GCP, AZURE, AWS
1w
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873 - Citgo Lemont IL - 2026 Fall TAR
Hammond, Indiana, United States
OnsiteTemporary
3+ YOEAPI 510/570 certification required, HS diploma, minimum 3 years 510/570 experience, valid driver\u0000s license, pre-access drug/alcohol test, background check, ability to lift 50 lbs and work at heights/confined spaces.
2mo
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AI Systems Architect - Lead Engineer
Chicago, Illinois, United States
$100-$150/hr OnsiteContract, Temporary
Experience with AI systems, automation, software architecture; OpenAI APIs, LangChain, Python/Node.js; API integrations; cloud and scalable architecture; leadership.
OpenAI APIs, LangChain, Python, Node.js, APIs, SaaS platforms
2w
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Team Solutions Engineer - Enterprise
Downers Grove or Frisco
$84k-$152k/yr OnsiteFull Time
2+ YOEHigh school diploma required; 2+ years telecom/IT or API integration experience; hands-on REST API and Postman experience; strong technical presentation and communication skills; STEM bachelor\u0002s preferred.
REST API, Postman
2mo
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Senior Application Engineer I
Philadelphia or Chicago or New York City or Los Angeles or Washington
$133k-$183k/yr HybridFull Time
8+ YOEBachelor's or equivalent experience, 8+ years in advanced application support/configuration, expertise with e-discovery platforms, APIs/ETL, Microsoft SQL, Linux, REST APIs, PowerShell, and strong communication and problem-solving skills.
Relativity Server/One, Reveal, BrainSpace, APIs, ETL, Microsoft SQL, Linux, REST APIs, PowerShell
1mo
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Workday Extend Lead - Senior Manager
Chicago or Denver or Boston or Denver or Washington or Pensacola or Boston or New York City or Washington or Pensacola or United States
$165k-$190k/yr RemoteFull Time
5+ YOE5+ years Workday experience including Workday Extend development; experience across HCM, Finance, Integrations, Reporting; Workday integrations (Studio, EIB, APIs); APIs/JSON and event-driven architectures; strong client-facing and communication skills.
Workday Extend, Workday, Studio, EIB, APIs, JSON
1mo
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Senior Software Engineer
Downers Grove, Illinois, United States
$110k-$130k/yr HybridFull Time
5+ YOE5+ years with Microsoft stack (.NET 6/7/8+, ASP.NET Core, Web API, EF Core), SQL Server, Azure services, CI/CD and Git; bachelor\u0002s degree or equivalent experience; strong API, security, testing, and mentoring skills.
.NET, .NET 6, .NET 7, .NET 8, ASP.NET Core, Web API, Entity Framework Core, ASP.NET MVC, Angular, React, TypeScript, JavaScript, SQL Server, Microsoft Azure, App Service, Functions, Azure SQL, Application Insights, CI/CD, Git, Azure DevOps, GitHub Actions
1mo
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Senior Account Executive- Central
United States or Chicago or St. Louis or Kansas City
$100k-$150k/yr RemoteFull Time
5+ YOEBachelor's degree required; 5+ years enterprise B2B sales experience selling data, APIs, or legal tech to large law firms; demonstrated Central US legal relationships; familiarity with APIs, MDM, CDP, BI and analytics; strong communication and deal-closing skills; willingness to travel.
UniCourt Enterprise API, APIs, MDM, CDP, BI tools, data analytics platforms
2mo
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Senior Software Engineer
Chicago, Illinois, United States
$153k/yr RemoteFull Time
5+ YOERequires advanced Python development, relational/vector databases, cloud services, and AI/ML concepts with REST APIs and CI/CD.
Python, FastAPI, Flask, REST API, PostgreSQL, SQLAlchemy, Weaviate, Pinecone, Pandas, Plotly, Matplotlib, AWS, S3, RDS, API Gateway, Lambda, Redis, SQS, Celery, Git, CI/CD, GraphQL, OpenAI, Anthropic, MistralAI, UML