42 api developer jobs at 29 companies in Creston, IL
1mo
Save
Mark Applied
Hide
.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
3d
Save
Mark Applied
Hide
Software Developer (Onsite - Huntley, IL)
Huntley, Illinois, United States
$60k-$80k/yr OnsiteFull Time
0+ YOEBachelor's degree in a relevant computer field and 0–2 years of software development experience. Requires knowledge of programming, databases, APIs, web services, and testing.
Python, Java, JavaScript, APIs, ERP, HSA, FSA, Microsoft 401k, Roth 401k
1mo
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
Android Developer Experience Lead
Holtsville or Lincolnshire or Austin or Kennesaw
$139k-$208k/yr HybridFull Time
10+ YOELead Android Developer Experience; 10+ years with Bachelor's or 7+ years with Advanced Degree; Android platform expertise; API/SDK design; Java and Kotlin proficiency.
Android Studio, Gradle, Java, Kotlin, APIs, SDKs
1mo
Save
Mark Applied
Hide
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
1d
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
3w
Save
Mark Applied
Hide
Application Engineer - Automation
Hanover Park or Indianapolis
$75k/yr FieldFull Time
5+ YOEBachelor's degree required, 5+ years in distribution/material handling, knowledge of AGV/VLM/ASRS, API and PLC controls, Microsoft Office, strong communication and project skills.
API, PLC, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint, Microsoft Word
1mo
Save
Mark Applied
Hide
Software Engineer Manager
Lake Zurich or United States
$165k-$180k/yr HybridFull Time
8+ YOE4+ Mgmt8+ years software engineering experience, 4+ years managing engineering teams; expertise in enterprise integrations, APIs, platform and full-stack development; cloud experience (Azure preferred); strong leadership and communication.
Azure, AWS, Google Cloud, Azure Integration Services, Boomi, MuleSoft, Kafka
2mo
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
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
Explore Jobs