20 api developer jobs at 14 companies in Ottawa, IL
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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
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
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
2mo
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Principal Software Development Engineer (PBM AI Solutions)
Buffalo Grove, Illinois, United States
$144k-$288k/yr RemoteFull Time
10+ YOELeading architecture and delivery of cloud-native applications; 5+ years frontend, 5+ years backend, 3+ years AI/GenAI experience; strong leadership in agile environments.
Angular, React, React TypeScript, Python, REST API, CI/CD, AWS, Azure, GCP, BigQuery, Spanner, BigTable, API-first, Microservices
2mo
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Sr. Engineer - Oil & Gas
Lisle, Illinois, United States
$90k-$140k/yr OnsiteFull Time
10+ YOEBS in Civil, Mechanical, Chemical, Electrical or Petroleum Engineering; 5-15 years in oil/gas engineering; 3+ years PM experience; knowledge of DOT/API/ANSI/ASME; travel willingness; MS Office proficiency.
Word, Excel, PowerPoint, MS Project
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Digital Solutions Engineer/Client Integrations Engineer
West Chicago, Illinois, United States
$73k-$101k/yr OnsiteFull Time
4+ YOE4+ years hands‑on experience with Adobe platforms (AEM, Workfront); strong integrations and automation experience (Workfront Fusion, Adobe APIs); production troubleshooting and configuration skills required.
Adobe Experience Manager (AEM), Adobe Workfront, Adobe Journey Optimizer (AJO), Adobe Campaign, Workfront Fusion, Adobe APIs, REST, Adobe I/O, Adobe Experience Platform (AEP), Databricks, Snowflake
2w
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Civil Structural Engineer
Plainfield, Illinois, United States
$88k-$111k/yr OnsiteFull Time
0+ YOEBachelor's or Master's in civil structural engineering, 0+ years industry experience, understanding of AISC/ASCE/IBC/API/ACI codes, strong communication skills, ability to obtain PE license.
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Accounting Automation Engineer
Lemont, Illinois, United States
RemoteFull Time
Experience automating accounting and finance workflows using spreadsheets, SQL, Python or automation platforms; understanding of reconciliations, journal entries, month-end close, AP/payroll; strong analytical and documentation skills.
Microsoft Excel, Google Sheets, SQL, Python, Microsoft Power Query, VBA, Google Apps Script, Zapier, Make, Microsoft Power Automate, APIs
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Engineer-Systems Integr
Aurora, Illinois, United States
$105k-$157k/yr OnsiteFull Time
OSI Group: A global food provider partnering with foodservice and retail brands to deliver concept-to-table solutions.
Design and implement integrations across shop-floor sensors, MES, SCADA, and ERP; production-grade Python, Ignition/SCADA, MQTT, Power BI/SQL, and SAP S/4HANA experience preferred; 5+ years experience preferred.
Python, Ignition, Perspective, SCADA, MES, SafetyChain, MQTT, Banner DXM/DX80, Microsoft Power BI, SQL, Snowflake, SAP S/4HANA, REST API, ERP
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Systems Administrator Engineer - Cloud & Automation
Milwaukee or Kansas City or Rolling Meadows or Naperville or Scottsdale or Raleigh or Jersey City or Newark or Norristown or Plano or Alpharetta or Sarasota or United States
$63k-$138k/yr HybridFull Time
7+ YOE7+ years in cloud, automation, and infrastructure engineering; IaC (Bicep/ARM/Terraform) for Azure; Microsoft Graph API and PowerShell expertise; experience with Azure services, Entra ID, Microsoft 365 automation; US work authorization required.
Bicep, ARM templates, Terraform, Microsoft Graph API, PowerShell, Microsoft Azure Automation, Microsoft Logic Apps, Microsoft Azure Functions, Microsoft Azure, Microsoft Entra ID, Microsoft 365, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint, Windows Server, Microsoft Active Directory, Group Policy, DNS, DHCP, IIS, Microsoft Fabric, Microsoft Power BI, Git, Azure DevOps, GitHub Actions, Infrastructure as Code (IaC)
2d
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Cloud Solutions Architect / Database Engineer / AI Platform Architect (Illinois , Aurora )
Aurora, Illinois, United States
$150k-$180k/yr OnsiteFull Time
Deep expertise in cloud architecture, C#/.NET, SQL Server, REST APIs, security, authentication, Azure or AWS, integrations, and production AI/LLM architecture; hands-on enterprise AI application experience required.
C#, .NET, SQL Server, RESTful APIs, ASP.NET Core, OAuth 2.0, OpenID Connect, JWT, SSO, RBAC, SSL/TLS, CI/CD, OpenAI, Azure OpenAI, Anthropic, Google AI, Large Language Model (LLM), Retrieval-Augmented Generation (RAG), ETL
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Manager - Salesforce Engineering
Naperville, Illinois, United States
$130k-$195k/yr HybridFull Time
6+ YOE3+ MgmtRequires 6+ years Salesforce development, 3+ years managing engineering teams, expertise in Apex, LWC, SOQL, Visualforce, APIs, architecture, integrations, DevOps, QA, and vendor management; undergraduate degree required.
Salesforce, Sales Cloud, Service Cloud, Experience Cloud, Marketing Cloud, Revenue Cloud, CPQ, Apex, Lightning Web Components, SOQL, Visualforce, Salesforce APIs, REST, SOAP, MuleSoft, Boomi, SFDX, Git, CI/CD, Copado, Gearset, Flosum, Provar, Copado Robotic Testing, Selenium, Snowflake, Segment, ERP, AWS, FSA, HSA
3mo
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Postdoctoral Appointee - Building Agentic AI Platform for X-ray Science
Lemont, Illinois, United States
$73k-$121k/yr OnsiteFull Time, Contract
0+ YOEPhD within 5 years in computational chemistry, chemistry, materials science, physics, computational science, computer science, engineering, or related field; strong computational chemistry; experience with DFT codes; Python and ML; familiarity with LLMs and web/API development; X-ray spectroscopy knowledge preferred.
VASP, Quantum ESPRESSO, CP2K, ABINIT, GPAW, Gaussian, ORCA, Q-Chem, Python, PyTorch, FastAPI, Flask, numpy, pandas, scikit-learn, LLM APIs, agent frameworks, FEFF, OCEAN, FDMNES, XSpectra, Argonne-specific tools
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Manager - Salesforce Engineering
Naperville, Illinois, United States
$130k-$195k/yr HybridFull Time
6+ YOE3+ Mgmt6+ years Salesforce development, 3+ years managing Salesforce engineering teams; deep expertise in Apex, LWC, SOQL, Visualforce, Salesforce APIs; integrations (REST/SOAP, MuleSoft, Boomi); DevOps tooling (SFDX, Git, CI/CD, Copado/Gearset/Flosum); vendor and QA oversight; bachelor's degree in CS/engineering or equivalent.
Apex, Lightning Web Components, SOQL, Visualforce, Salesforce APIs, Sales Cloud, Service Cloud, Experience Cloud, CPQ, Revenue Cloud, AppExchange, MuleSoft, Boomi, SFDX, Git, CI/CD, Copado, Gearset, Flosum, Provar, Copado Robotic Testing, Selenium, Snowflake, Segment, AWS
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