54 api developer jobs at 38 companies in Columbus, WI
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PHP Developer
Auburn Hills or Juneau
OnsiteFull Time
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.
PHP, Laravel, Symfony, REST APIs, SQL, JavaScript, React, Vue, Angular, SASS/LESS, Webpack, Gulp, Grunt, Docker, Git, Azure
1mo
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Software Developer (GIS)
Waukesha, Wisconsin, United States
OnsiteFull Time
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.
ArcGIS Pro, ArcGIS Online, ArcGIS Enterprise, ArcGIS Dashboards, ArcGIS Field Maps, Survey123, VertiGIS Studio, AWS, SQL, NoSQL, REST APIs, Python, JavaScript, TypeScript
1mo
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Software Engineer
Delafield, Wisconsin, United States
OnsiteFull Time
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
4d
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Lead Software Engineer
Fond du Lac or Appleton or Oshkosh
HybridFull Time
7+ YOE2+ MgmtRequires 7 years developing full-stack software, including 2 years in technical leadership, strong communication, collaboration, and experience with business applications, APIs, integrations, and databases.
C#, .NET Core, Angular, SQL, TypeScript, JavaScript
2d
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Integration Developer (840017)
Pewaukee or Illinois or Iowa or Michigan or Minnesota
$1/yr HybridFull Time
2+ YOEBachelor’s degree in Computer Science, Information Systems, or related field; 2+ years of API/SDK integration experience; proficiency in Python, PHP, JavaScript, Java, JSON, REST APIs, Git, and integration tools.
Python, JSON, RESTful APIs, PHP, Postman, Bruno, Swagger/OpenAPI, Git, JavaScript, Java, OAuth, OpenID Connect, SQL, ETL, WCAG, FERPA, Banner, Ellucian
1mo
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Integration Developer - Integrations, Data & AI Solutions
Pewaukee, Wisconsin, United States
HybridFull Time
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
5d
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Xformative - Fintech Software Engineer
Madison, Wisconsin, United States
RemoteFull Time
5+ YOE5+ years software development experience in payments, strong Node.js and TypeScript skills, API and backend engineering, AWS experience, knowledge of payment compliance (PCI-DSS/SOC2), bachelor\u0002s degree preferred.
Node.js, TypeScript, AWS, AWS CloudWatch, PCI-DSS, SOC2
1mo
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Senior Java Engineer (Hybrid)
Madison or Boston
$99k-$167k/yr HybridFull Time
5+ YOE5+ years AWS-backed Java development experience building Spring Boot and RESTful APIs; proficiency with Python and SQL; experience with integration, SDLC, testing, and cloud services; insurance experience preferred; ability to travel up to 10%.
Java, Spring Boot, RESTful API, Python, SQL, AWS, Microsoft Copilot, Claude Code
3w
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Artificial Intelligence Engineer III
Madison or Kingwood
HybridFull Time
5+ YOEBachelor's or equivalent experience, 5+ years in software/ML/AI engineering, advanced Python and API skills, experience with large-scale data platforms and LLM systems, familiarity with AI orchestration frameworks, strong communication.
Python, APIs, Snowflake, Databricks, Amazon Redshift, Microsoft Synapse, LangChain, LangGraph, LlamaIndex, Semantic Kernel
1w
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O'Connor Lab Software Developer
Madison, Wisconsin, United States
$113k/yr OnsiteFull Time
4+ YOERequires 4+ years building production web applications, experience with interactive data visualizations, API integrations, version control, collaborating with researchers, and demonstrated portfolio of deployed systems.
GitHub, Python, TypeScript, JavaScript, D3, Plotly, Apache ECharts, LabKey
2mo
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Senior Backend Software Engineer, Solve Voice
Austin or Madison or San Francisco
$145k-$217k/yr HybridFull Time
3+ YOE3+ years backend engineering; real-time systems (WebRTC/SIP); Python or equivalent; API design; async architectures; frontend basics.
Python, WebRTC, WebSockets, SIP, APIs, Async frameworks
1w
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Front End Developer
Germantown, Wisconsin, United States
HybridFull Time
5+ YOE5+ years front-end experience with HTML/CSS/JavaScript and modern frameworks; experience with Makeswift or BigCommerce page builders, accessibility (WCAG), responsive design, API integration, and Git. Bachelor's degree preferred.
HTML, CSS, JavaScript, Makeswift, Big Commerce B2B Page Builder, BigCommerce B2B Page Builder, React, Vue, Angular, Git
2mo
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Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles or Virginia or Sun Prairie
OnsiteFull Time
2+ YOEActive Top Secret/SCI clearance, bachelor’s degree in STEM, 2+ years backend development with Python/Node.js/Java, experience with ArcGIS Enterprise, containerization, API design, and geoprocessing workflows.
ArcGIS Enterprise, Python, Node.js, Java, Docker, Kubernetes, PostgreSQL/PostGIS, SQL Server, Azure, AWS, GCP
1mo
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Senior Staff Engineer
Madison, Wisconsin, United States
$180k-$220k/yr HybridFull Time
10+ YOE10+ years professional software engineering experience; deep TypeScript/full-stack expertise; proven architecture, API, scalability, and reliability experience; strong communication and mentorship skills.
TypeScript, React, Next.js, Node.js, PostgreSQL, Algolia, AWS, GCP, Vercel, Cloudflare
3mo
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Senior Software Engineer
Madison, Wisconsin, United States
$100k-$144k/yr RemoteFull Time
6+ YOEExpertise in PHP, Laravel, Vue.js; 10+ years with PHP frameworks; 6+ years with Vue; API design; AWS; Git; SaaS experience; testable code with Pest/PHPUnit; agile team experience.
Laravel, Vue.js, Tailwind CSS, PHP, Pest, PHPUnit, AWS, NodeJS
2w
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SERVICENOW PLATFORM DEVELOPER, FCH - ITSM (1023586001)
Menomonee Falls, Wisconsin, United States
$38-$65/hr RemoteFull Time
3+ YOEMinimum 3 years ServiceNow development experience, ServiceNow CSA/CAD/CIS required, proficiency in JavaScript/AngularJS/HTML/CSS, experience with Glide/REST/SOAP APIs, ITSM/ITOM/IRM/SPM exposure, bachelor's-level technical knowledge.
ServiceNow, Glide API, REST API, SOAP API, JavaScript, AngularJS, HTML, CSS, PowerShell, Python
3w
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Senior Software Engineer - IBM App Connect Enterprise
Irving or Middleton or Denver or Seattle
$95k-$150k/yr HybridFull Time
4+ YOE4+ years software engineering with hands-on IBM App Connect Enterprise, ESQL/Java, integration patterns, APIs, messaging (MQ/Kafka), Kubernetes/OpenShift, CI/CD and strong troubleshooting skills.
IBM App Connect Enterprise, ACE, ESQL, Java, REST, SOAP, IBM MQ, MQ, Kafka, DFDL, JSON, XML, Docker, Kubernetes, Red Hat OpenShift, Git, Jenkins, Tekton, UrbanCode, AppDynamics, Splunk, ELK, HTTP(S), JDBC
1mo
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Software Engineer 2- (Java/Spring Boot/DevOps)
Atlanta or Charlotte or Chicago or Gresham or Cincinnati or Englewood or Brookfield or Minneapolis or Irving or Earth City
$98k-$116k/yr HybridFull Time
3+ YOEBachelor's degree or equivalent experience, 3+ years relevant experience, strong Java/Spring Boot and microservices experience, REST/API design, cloud-native and DevOps practices, strong communication and debugging skills.
Java, J2EE, Spring Boot, Spring Cloud, Hibernate, JPA, RESTful API, REST, GraphQL, Azure, AWS, GCP, Apache Kafka, Spark, PostgreSQL, MS SQL, Cassandra, MongoDB, Jenkins, Cloud bees, Apigee, Kubernetes, Rancher, OAuth, JWT
1w
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Quality Engineer I
Madison, Wisconsin, United States
$61k-$123k/yr OnsiteFull Time
1+ YOE1+ years software testing experience; bachelor’s in computer science or HS+4 years experience acceptable; test strategy, test case creation, SQL, REST API and UI testing; Agile experience preferred.
Selenium, Postman, SOAPUI, JMeter, SQL, REST API
2mo
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Software Engineer - AI & Cloud Engineering (Early to Mid Career, WI Based)
Madison, Wisconsin, United States
OnsiteFull Time
3+ YOE3-6 years software engineering; strong programming in Python/C++/Rust/Go/Java/JavaScript; backend systems/APIs/distributed services; Linux/Git; ability to drive projects; degree in technical field
Python, C++, Rust, Go, Java, JavaScript, Linux, Git, Docker, Kubernetes, AWS, GCP, Azure
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