76 api developer jobs at 50 companies in Morris, IL
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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
2w
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iSeries Developer
Bedford Park, Illinois, United States
$90k-$120k/yr HybridFull Time
Proven full-lifecycle development experience on iSeries/AS400 using RPG IV/ILE, RPG Free, CL and embedded SQL; experience with VS Code, APIs/web services, and P&C insurance knowledge.
RPG IV/ILE, RPG Free, CL, SQL, APIs, Visual Studio Code, ChatGPT, Claude
1mo
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.NET Developer - QMS
Aurora, Illinois, United States
$70k-$105k/yr OnsiteFull Time
1+ YOEMust have .NET experience with C#, ASP.NET MVC/Web Forms, Web API, and SQL Server; Bachelor's degree in Computer Science/Engineering; 1+ years professional development experience; strong OOP and problem-solving skills.
.NET, C#, ASP.NET MVC, ASP.NET Web Forms, Web API, SQL Server
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Senior MES Developer
Hanoi or Hung Yen or Lisle
OnsiteFull Time
6+ YOE6+ years software development (4+ backend) with strong Java 17+/Spring Boot, REST API, high-concurrency transactional systems; experience with Progress/PostgreSQL, Kafka, Angular, observability, performance tuning, and CI/CD tools (Jira, GitLab).
Java 17+, Spring Boot, REST API, Progress, PostgreSQL, Kafka, Angular, TypeScript, Opcenter, Camstar, SAP, WMS, DataHub, Prometheus, Grafana, Playwright, Jira, GitLab
2mo
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Sr. Software Engineer
Oak Brook, Illinois, United States
OnsiteFull Time
5+ YOEBS in CS or related field or equivalent; 5+ yrs distributed multi-tier software development; strong comms; lead experience; proficient in C#/NET, HTML/JS; SQL Server; API development; Agile; OOP/SOLID.
C#/.NET, HTML, JavaScript, jQuery, Angular 2+, Microsoft SQL Server, Entity Framework, API development, Git, TFVC, Visual Studio, Azure, AWS, Azure DevOps, N Telerik Kendo UI, NativeScript, Xamarin, Windows UWP, OOP, SOLID
1mo
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API Product Manager
Itasca or United States
$150k-$180k/yr RemoteFull Time
5+ YOE5+ years product management experience (fraud, identity, payments, or SaaS); knowledge of RESTful APIs and OAuth/SAML; vendor and data provider management; developer experience and partner integrations.
RESTful APIs, OAuth, SAML, Shopify, Salesforce, Ping Identity
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Lead Software Engineer
Downers Grove, Illinois, United States
$120k-$130k/yr HybridFull Time
8+ YOE8+ years Microsoft-stack software development, expertise in .NET (6/7/8), ASP.NET Core/MVC, Web API, EF Core, Azure services, Microsoft SQL Server, JavaScript/TypeScript and modern front-end (Angular/React); experience with CI/CD, observability, secure coding, and leading engineering delivery.
.NET 6/7/8, ASP.NET Core, Web API, Entity Framework Core, ASP.NET MVC, Angular, React, JavaScript, TypeScript, HTML5, CSS, Microsoft SQL Server, Azure, App Service, Functions, Azure SQL, Storage, Application Insights, Azure DevOps, GitHub Actions, CI/CD, API gateways
1d
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Software Engineer
Schaumburg, Illinois, United States
$73k-$130k/yr RemoteFull Time
3+ YOEBachelor's degree in computer science or engineering; 3+ years full-lifecycle software development; 2+ years HTMX; 1+ year Go building services, APIs, and web applications.
Go, HTMX, Microsoft .NET, React, Tailwind, Microsoft Azure, GitHub Copilot, Microsoft 365, Terraform, Helm, Flux, Kubernetes, Splunk, Grafana, Prometheus, Dynatrace, Application Insights, OWASP, HIPAA, MS SQL, PostgreSQL
5d
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Senior Developer (Informatica P360)
Pittsburgh or Glen View
$82k-$139k/yr RemoteFull Time
5+ YOE5+ years development experience delivering and supporting enterprise solutions; expertise with Location MDM, integrations, data quality, SDLC and Agile; strong communication and technical documentation skills.
Informatica P360, MDM, SDLC, Agile, APIs
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Full Stack Engineer
Schaumburg, Illinois, United States
$115k-$130k/yr HybridFull Time
2+ YOE2+ years full stack development experience with React, Python, SQL and AWS; ability to read and improve existing codebase, consume/develop REST APIs, and work in a hybrid team environment.
React, Python, SQL, AWS, Athena, S3, DynamoDB, API Gateway, Amplify, CloudFront, Git, TypeScript, REST, Jira
1w
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Software Engineer - Commerce & Integrations
Lisle, Illinois, United States
$138k-$206k/yr OnsiteFull Time
5+ YOE5+ years backend software engineering with PHP, REST APIs, relational DB design, integrations experience; 1+ year lead experience; strong communication and CI/CD familiarity.
PHP, REST API, MySQL, PostgreSQL, Azure Pipelines, Docker, Kubernetes, AKS, Copilot, Claude Code, Spryker Cloud Commerce OS, Magento, Shopware, BigCommerce, CDK, Procede, Karmak, SAP, EDI, Punchout, cXML, OCI, Azure
1w
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AI Solutions Engineer
Lockport, Illinois, United States
$75k-$95k/yr HybridFull Time
Build internal AI tools and prototypes, work with APIs and MCP servers, connect systems, demonstrate programming and integration experience, and pass drug screen and hands-on testing.
APIs, MCP servers, GitHub
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Lead Software Engineer
Downers Grove, Illinois, United States
$120k-$130k/yr HybridFull Time
8+ YOE8+ years with Microsoft technology stack (.NET 6/7/8, ASP.NET Core, Web API, EF Core), 5+ years web and SQL Server experience, Azure and CI/CD experience, strong frontend (Angular/React, TypeScript) and observability, bachelor’s degree or equivalent experience.
.NET 6/7/8, ASP.NET Core, Web API, Entity Framework Core, ASP.NET MVC, Angular, React, JavaScript, TypeScript, HTML5, CSS, Microsoft SQL Server, Azure App Service, Azure Functions, Azure SQL, Azure Storage, Application Insights, Azure DevOps, GitHub Actions
3w
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Senior .NET Application Developer
Lisle, Illinois, United States
$65-$70/hr HybridContract
10+ YOE10+ years professional software development with Microsoft stack (C#, .NET, ASP.NET Core), SQL Server, front-end frameworks, and DevOps tools.
C#, .NET Framework, ASP.NET, ASP.NET Core, MVC, Web API, ADO.NET, Entity Framework, WCF, SQL Server, HTML5, CSS, Bootstrap, JavaScript, jQuery, Angular, React, JSON, AJAX, Azure DevOps, GitHub, TFS, Visual Studio, VS Code, Postman, SoapUI
2mo
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Software Engineer II (Oak Brook, IL, US)
Oak Brook, Illinois, United States
$87k-$133k/yr OnsiteFull Time
2+ YOEBachelor's degree in Computer Science/Software Engineering and 2+ years in software development; strong C# or TypeScript/Node.js; SQL (PostgreSQL/MySQL); cloud experience (Azure/AWS); Git; REST APIs; debugging and problem-solving; team player.
C#, TypeScript, Node.js, SQL, PostgreSQL, MySQL, Azure, AWS, Git, REST APIs, Terraform (Preferred), Atlassian tools (Preferred)
2mo
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Automation Engineer (Custom n8n Connector Development)
Schaumburg, Illinois, United States
$130k-$140k/yr HybridFull Time
3+ YOE3+ years JavaScript/TypeScript, 2+ years Node.js (v18.17.0+), API integration experience, familiarity with n8n or similar workflow tools, bachelor’s degree or equivalent, strong problem-solving and communication skills.
JavaScript, TypeScript, Node.js, n8n, Zapier, Make, RESTful APIs, Playwright, Git, npm, yarn, JSON, SQL, NoSQL
2w
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Software Engineer (Hybrid) Bolingbrook, IL
Bolingbrook, Illinois, United States
$105k-$108k/yr HybridFull Time
3+ YOE3+ years professional C#/.NET experience, UI framework and modern JavaScript/CSS skills, API and SQL proficiency, strong problem-solving and communication.
C#, Microsoft .NET, Razor, Blazor, React, Angular, Vue, JavaScript, CSS, REST, JSON, SQL
2mo
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Sr. Software Engineer
Wayne or Naperville
$120k-$135k/yr HybridFull Time
5+ YOE5–7 years backend engineering or intelligent systems with production impact; strong Python, CI/CD, and system design; experience with ML model APIs and cloud inference; familiarity with vector databases and retrieval systems.
Python, CI/CD, AWS Bedrock, Azure OpenAI, Google Vertex AI, PyTorch, Hugging Face Transformers, vLLM, FAISS, Pinecone, OpenSearch/KNN, LangChain, LlamaIndex, MLflow, Weights & Biases, Prometheus
2w
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SAP Integration Suite Engineer
Addison or Plattsburgh or Mary Esther
$88k-$118k/yr HybridFull Time
5+ YOE5+ years enterprise integration experience, 3+ years SAP Integration Suite (CPI) hands-on, strong knowledge of SAP S/4HANA, REST/SOAP/OData, IDoc/RFC/BAPI, XML/JSON/XSLT, API Management; bachelor's degree in CS/IS/Engineering.
SAP Integration Suite, Cloud Integration (CPI), SAP API Management, Event Mesh, SAP Business Technology Platform (BTP), SAP S/4HANA, IDoc, RFC, BAPI, SOAP, REST, OData, XML, JSON, XSLT, JDBC, SFTP, AS2, EDI, Salesforce, ServiceNow, Workday, Azure
2mo
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Platform Software Engineer
Oak Brook, Illinois, United States
$160k-$170k/yr OnsiteFull Time
Proficiency in Python, REST API design, FastAPI and React, cloud deployment on Microsoft Azure, containerization (Docker/Kubernetes), MS SQL, Git, CI/CD and IaC (Terraform/Bicep/ARM), healthcare standards (EDI X12, HL7, FHIR) and HIPAA security.
Python, Selenium, OpenCV, FastAPI, React, RESTful APIs, EDI (X12), HL7 (v2/v3), FHIR (R4), Microsoft Azure, Microsoft App Services, Microsoft Azure Functions, Microsoft Logic Apps, Microsoft Azure SQL, Microsoft Key Vault, Microsoft Entra ID, Microsoft Azure Monitor, Microsoft Azure DevOps, GitHub Actions, Terraform, Bicep, ARM templates, Microsoft SQL Server, Docker, Kubernetes, Git, OCR, NLP, RBAC
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