76 api engineer jobs at 49 companies in Bradley, IL
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Senior Engineer - Software
University Park, Illinois, United States
$78k-$134k/yr OnsiteFull Time
5+ YOEBachelor's in software engineering,5+ years engineering experience,web and mobile service development,proficiency with SQL,C#,C++,JavaScript/.NET,REST APIs,strong communication and design skills.
SQL, JavaScript, Angular, React, JQuery, Vue, C#, C++, ASP, .NET Core Framework, REST APIs, Atlassian, SIP, SMS, SMTP, SNMP, HTTPS, RS232, RS485, VoIP, SCADA
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
3d
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Sr Reliability Engineer
Kankakee, Illinois, United States
$108k-$128k/yr OnsiteFull Time
7+ YOELead equipment reliability and maintenance strategy in regulated manufacturing; 7+ years maintenance/engineering experience; CMMS and predictive maintenance expertise; bachelor\u0002s degree in engineering; CMRP/CRE/API certifications preferred.
Power BI, CMMS, Maximo, SAP, TrackWise Digital
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Sr Engineer Process
Downers Grove, Illinois, United States
$148k-$170k/yr OnsiteFull Time
15+ YOEBachelor's in chemical or mechanical engineering, 15+ years process engineering experience in power/energy/chemical industries, ASME/API knowledge, H&MB and hydraulic analysis, proficient with AspenTech or Thermoflow; PE preferred.
AspenTech, Thermoflow
2w
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Team Solutions Engineer - Enterprise
Downers Grove or Frisco
$84k-$152k/yr OnsiteFull Time
2+ YOE2+ years in telecommunications/IT with hands-on REST API and integration experience, strong technical presentation and communication skills, high school diploma required, STEM bachelor preferred.
REST API, Postman
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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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.
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
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Reliability Engineer (F/M/X) (USA - Chicago Heights, IL, US)
Chicago Heights, Illinois, United States
$100k-$118k/yr OnsiteFull Time
5+ YOEEngineering degree required; 5+ years plant maintenance/construction experience at a chemical plant; API vessel & piping inspector and Category II vibration analyst certifications (or obtain within 1 year); experience with SAP, AutoCAD, rebuilding pumps/compressors, PM/PdM, MI, and spare parts management.
SAP, Microsoft Office, Google Suite, AutoCAD
1w
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Senior QA Engineer 2, Team Lead - ERP Platform
Wayne or Naperville
HybridFull Time
7+ YOE2+ Mgmt7+ years QA experience with hands-on test automation, 2+ years leading QA, experience with web apps, API and performance testing, strong SQL, and demonstrated use of AI to improve QA.
Playwright, Selenium/WebDriver, Cucumber, REST Assured, TestNG, Serenity, JMeter, k6, Gatling, Postman, SQL, Lambda, API Gateway, SQS, SNS, RDS, OpenAI
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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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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
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
3mo
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Tosca Automation Engineer
Columbus or Merrillville
$75k-$105k/yr HybridFull Time, Contract
5+ YOEFive+ years QA automation; 3+ years Tosca; SAP and Salesforce; API testing (REST/SOAP); SDLC, Agile/DevSecOps; strong communication.
Tosca, SAP, Salesforce, REST API, SOAP API, JSON, XML, Jenkins, Azure DevOps, qTest, NeoLoad
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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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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
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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
1w
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AI Solutions & Data Engineer
Darien, Illinois, United States
$100k-$160k/yr HybridFull Time
Design and implement AI agents, data pipelines, integrations, and automation; proficiency in Python, SQL, APIs; strong communication and responsible-AI judgment.
Python, SQL, APIs, Microsoft Azure, Microsoft 365, Copilot Studio, Power Platform, Fabric, Azure OpenAI, OpenAI, Anthropic, Autodesk Construction Cloud, Procore, Bentley, Unanet, CMiC, Egnyte, BIM
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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
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Lead Software Engineer
Downers Grove, Illinois, United States
$120k-$130k/yr HybridFull Time
8+ YOE8+ years in Microsoft stack engineering (.NET, ASP.NET Core, EF Core), Azure, SQL Server, front-end (Angular/React), CI/CD, automated testing, observability, and leadership/mentoring experience; Bachelor’s in CS or related (or equivalent).
.NET 6, .NET 7, .NET 8, ASP.NET Core, Web API, Entity Framework Core, Angular, React, JavaScript, TypeScript, HTML5, CSS, Microsoft SQL Server, Microsoft Azure, Azure App Service, Azure Functions, Azure SQL, Azure Storage, Application Insights, Azure DevOps, GitHub Actions
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