28 api developer jobs at 20 companies in Waupun, WI
🚀PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yrOn-SiteFull Time
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Whisker: Designs and manufactures automated pet care products and appliances.
2+ YOE2–3+ years web development with PHP; experience with MVC (Laravel or Symfony); REST APIs; relational databases; Agile; BS in CS/CE or equivalent.
Ruekert & Mielke: Civil engineering and infrastructure services for municipal governments.
3+ YOEBachelor's degree or equivalent experience; 3+ years software development or GIS application experience; proficiency with JavaScript/TypeScript, Python, Esri/ArcGIS tools, AWS, SQL/NoSQL, REST APIs; strong communication and problem-solving skills.
5+ YOE5+ years backend development experience with C#/.NET, building REST APIs and SQL databases; experience with Git, cloud (Azure/AWS) and Docker preferred; Bachelor\u0002s degree in CS or equivalent experience.
C#, .NET, .NET 9, REST APIs, SQL, Git, Microsoft Azure, Microsoft Azure SQL, AWS, Docker
Integration Developer - Integrations, Data & AI Solutions
Pewaukee, Wisconsin, United States
HybridFull Time
Boelter: Designs commercial kitchens and supplies professional foodservice equipment.
3+ YOE3+ years software/integration or data engineering experience; hands-on enterprise integrations, APIs, databases, middleware, EDI; familiarity with SAP, Microsoft Fabric, Power BI, SQL, ETL/ELT; strong communication and AI curiosity.
SAP, Microsoft Fabric, Cleo Integration Cloud, Microsoft Power BI, SQL, ETL/ELT, EDI, APIs
Jewelers Mutual: Provides insurance and risk management for the jewelry industry.
3+ YOEBachelor's or equivalent experience, 3+ years professional software development, proficiency in Java/C#/Python/TypeScript/Go, RESTful APIs, cloud (AWS/Azure/GCP), Docker/Kubernetes, Git and CI/CD, strong communication and problem-solving.
Milliman: Global provider of actuarial and risk management consulting services.
2+ YOE2+ years full-stack development experience; strong C#, .NET Core, SQL, RESTful API skills; experience with data/statistical or ML model integration; Azure cloud familiarity preferred; strong communication and testing practices.
C#, .NET Core, SQL, RESTful APIs, Microsoft Azure, Microsoft Azure App Service, Microsoft Azure Functions, Microsoft Azure SQL, Python, CI/CD Pipelines, DevOps, Automated Testing Frameworks, Agile
Oakland or Seattle or WA or OH or CA or Long Beach or AZ or CO or CT or FL or GA or MD or MN or NV or OR or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills or AL or IL or VA or WI or TX or NY
$103k-$174k/yrHybridFull Time
Ascendiun: Nonprofit parent overseeing health insurance and clinical service organizations.
5+ YOE5+ years full stack development; BA/BS or equivalent IT experience; React/Vue/Angular; .NET/Java/Node.js/Python APIs; SQL/NoSQL; Azure preferred; Docker; IaC; CI/CD; AI tools; healthcare experience preferred.
SECURA Insurance: Provides property and casualty insurance to businesses and farms.
5+ YOEBachelor's in CS/IT, 5+ years software engineering experience, proficiency with Java and .NET; experience with integrations, APIs, and maintaining web applications; AI tooling experience and mentoring ability preferred.
Bruno Independent Living Aids: Manufacturer of mobility and accessibility products for homes and vehicles.
6+ YOEBachelor’s in CS or related field; 6+ years progressive exp, 3 in manufacturing; AI-first development with agentic LLM tools; polyglot across languages; SQL, REST APIs, system integrations, GIT, BI, vendor mgmt; strong prompt engineering.
Midwest Engineered Systems: Designs and builds custom industrial automation and robotic systems.
5+ YOE5+ years software engineering experience; strong C#/.NET and Blazor skills; RESTful API and relational DB (SQL Server, PostgreSQL) proficiency; on-premise deployment and PLC/HMI/MES integration; Agile/Jira experience; exposure to ML and CI/CD.
C#, Microsoft .NET, Blazor, RESTful APIs, Microsoft SQL Server, PostgreSQL, Jira, PLC, HMI, MES, Machine Learning & AI, CI/CD
Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis or Sun Prairie
OnsiteFull Time
NV5: Provides engineering, consulting, and geospatial solutions for infrastructure projects.
2+ YOEUS citizen with active/current Top Secret/SCI clearance, Bachelor's in CS/Engineering/GIS/STEM, 2+ years backend development experience using Python/Node.js/Java, ArcGIS Enterprise experience, containerization (Docker/Kubernetes), REST API design, and cloud familiarity.
The Boldt Company: General contractor and construction management firm for large-scale projects.
5+ YOEBachelor’s degree or equivalent experience; 5+ years development with Microsoft Power Platform and Dynamics 365 CRM; expertise in Power Apps, Dataverse, Power Automate, integrations (APIs, Logic Apps), Azure DevOps, deployments and release pipelines; driver's license may be required.
Power Apps, Power Automate, Dataverse, Dynamics 365, Dynamics 365 Sales, Azure DevOps, Databricks, Power BI, Microsoft Copilot, GitHub Copilot, Logic Apps, APIs
Delta Defense: Provides operational support and insurance for the USCCA.
3+ YOE3+ years MarTech/marketing operations experience; HS diploma required, bachelor’s preferred; authorized to work in the U.S.; working knowledge of JSON, dataLayer/event schemas, Regex, Liquid, HTML/CSS, SQL, JavaScript, APIs/webhooks; experience with Braze, Segment, GTM, GA4, Salesforce, CMS, testing tools.
Johnson Health TechTaiwan Stock Exchange: 1736: Designs and manufactures commercial and residential fitness equipment.
4+ YOE4+ years application development / systems integration; 3+ years Power Automate and Power Platform; REST APIs, JSON, OAuth; Dynamics 365, SAP, Azure; Bachelor's degree.
Power Automate, Azure Logic Apps, Azure Functions, Dataverse, REST APIs, JSON, OAuth, Service Principals, Power Platform governance, DLP policies
Milwaukee ToolHong Kong Stock Exchange: 0669: Manufacturer of professional-grade power tools and jobsite solutions.
2+ YOEBachelor's in engineering (or equivalent), 2+ years automation/machine-builder experience, SolidWorks/NX proficiency, ability to integrate mechanical design with controls/robotics/vision/data, strong communication and presentation skills.
SolidWorks, NX, Teamcenter, CAD, Microsoft PowerPoint, Microsoft Power BI, SQL, OPC-UA, MQTT, APIs, LabVIEW, Python, Cognex, Keyence, PLC, HMI
AmcorNYSE: AMCR: Develops and produces flexible and rigid packaging solutions globally.
5+ YOE5+ years in automation/packaging environments; BS in Electrical/Mechanical/Mechatronics/Systems/Automation Engineering; experience with PLCs, SCADA, IoT, MES, robotics; travel ~30%; multiple certifications in robotics and industrial networking.
Faith Technologies: Provides electrical engineering, construction, and sustainable energy solutions.
5+ YOEBachelor's degree required; 5+ years in data systems, development or asset operations; experience with Salesforce Service Cloud, Field Service Lightning, APIs, Power BI; project management, data governance, and team leadership experience.
Power BI, Salesforce Service Cloud, Field Service Lightning, APIs
Alto-Shaam: Manufactures professional foodservice equipment for commercial kitchens.
3+ YOEBachelor's degree or equivalent, 3+ years in systems integration/automation/software development or AI implementation; hands-on LLM and prompt engineering experience; experience integrating AI with ERP/CRM/SharePoint/MES via APIs; strong communication and project management skills.
Oracle Fusion Cloud, Microsoft 365, SharePoint, CRM, MES, Large language models (LLMs), Retrieval-augmented generation (RAG), APIs