197 api developer jobs at 117 companies in Wisconsin

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
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.
Node.js, Python, Elasticsearch, Redis
3w
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Senior Software Engineer (Hogan API)
Hopkins or Atlanta or Chicago or Charlotte or Englewood or Brookfield or Irving
$120k-$141k/yr HybridFull Time
U.S. Bank
U.S. BankNYSE: USB: Provider of personal, business, and institutional financial services.
5+ YOEBachelor's degree or equivalent and 5+ years relevant experience. Experience with mainframe/Hogan development (COBOL, JCL, CICS), APIs, system design, testing, security, and cross-team collaboration; Scrum familiarity.
Hogan COBOL, JCL, CICS, JSON, Splunk, IMS Database, GitLab, IDz/RDz (IBM Developer for zOS), Jira
2mo
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Senior Java Developer
Milwaukee, Wisconsin, United States
$106k-$180k/yr HybridFull Time
MGIC
MGICNYSE: MTG: Provides mortgage insurance to lenders for low-down-payment home loans.
2+ YOE2-5 years Java experience; Spring, Hibernate; API development; relational databases; Agile; JUnit; ServiceNow/Jira; COBOL, Angular an asset.
Java, Spring, Hibernate, API development, Junit, Relational databases, Jira, ServiceNow, Angular, COBOL, OutSystems
2w
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Python Developer
Milwaukee, Wisconsin, United States
HybridFull Time
Neostella
Neostella: Provides legal case management and workflow automation software.
2+ YOE2+ years software development experience, proficiency in Python, API/backend development, familiarity with AWS serverless services, strong communication and problem-solving skills.
Python, Serverless Framework, AWS Lambda, AWS Step Functions, API Gateway, SQS, GitHub, Jira, Coralogix, REST, SOAP
1mo
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PHP Developer
Auburn Hills or Juneau
OnsiteFull Time
Whisker
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.
PHP, Laravel, Symfony, REST APIs, SQL, JavaScript, React, Vue, Angular, SASS/LESS, Webpack, Gulp, Grunt, Docker, Git, Azure
1mo
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Sr. Manager, Software Engineering - API
Florida or Texas or Illinois or New York or New Jersey or Alabama or Arizona or Arkansas or Colorado or Connecticut or Delaware or Georgia or Indiana or Kansas or Massachusetts or Missouri or North Carolina or Tennessee or Utah or Wisconsin
$174k-$189k/yr RemoteFull Time
TradeStation
TradeStation: Provider of online brokerage services and trading technology.
7+ YOE7+ MgmtLead API platform strategy, manage teams, design API governance, and drive cloud-native infrastructure—REST/GraphQL/gRPC with AWS/Kubernetes.
REST, GraphQL, gRPC, MCP, Kong, Apigee, AWS API Gateway, AWS, Kubernetes, OpenAPI/Swagger, Protocol Buffers, OAuth 2.0, JWT, mTLS, Istio, Linkerd, Terraform, CI/CD
2w
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Interactive Technology Developer (Unity)
Milwaukee, Wisconsin, United States
RemoteFull Time
Stamm
Stamm: Provides event technology rentals and managed IT services.
Strong Unity and C# proficiency, professional Unity development experience, experience integrating SDKs/APIs and hardware, familiarity with networking protocols (OSC, TCP/IP, UDP, WebSockets, HTTP/REST), camera/sensor/tracking experience preferred, strong problem-solving and communication skills.
Unity, C#, DMX, OSC, WebSockets, TCP/UDP, HTTP APIs, TCP/IP, UDP, REST APIs, MediaPipe, OpenCV, ZED, Azure Kinect, Intel RealSense, TouchDesigner, Linux, JavaScript, HTML, V systems, AI
1d
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Senior Mobile Developer
Utah or Wisconsin or Alaska or Arkansas or Washington or Arizona or Virginia or Alabama or Texas or Pennsylvania or Oregon or Oklahoma or Ohio or Nevada or Nebraska or Montana or Mississippi or Minnesota or Michigan or Massachusetts or Maryland or Maine or Louisiana or Kansas or Iowa or Indiana or Idaho or Florida or Delaware or Connecticut or Missouri or Colorado or California or Wyoming
$125k-$135k/yr RemoteFull Time
Harris Computer
Harris Computer: Provides mission-critical vertical market software and service solutions.
8+ YOEExpertise in Kotlin and Swift, modern mobile UI frameworks, mobile architectures and DI, REST API integration, mobile testing, CI/CD tooling, AI-assisted development experience, bachelor's or equivalent, 8+ years software development.
Kotlin, Swift, Jetpack Compose, SwiftUI, The Composable Architecture, MVVM, Koin, Retrofit, OkHttp, URLSession, JUnit, Mockito, Robolectric, Espresso, Compose UI test, XCTest, XCUITest, Gradle, Swift Package Manager, Bitrise, Fastlane, GitHub Copilot, Claude, Cursor, ChatGPT
3w
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Software Engineer III - Tech Lead
Plano or Madison
$90k-$126k/yr HybridFull Time
Horace Mann
Horace MannNYSE: HMN: Providing insurance and financial solutions to educators and their families.
7+ YOEBachelor's in CS/IT or equivalent, 7+ years software development experience, technical leadership experience, strong proficiency with Java, .NET, SQL, DB2, SSIS, C#, COBOL, APIs; DevOps/CI/CD and AI experience preferred.
Java, .NET, SQL, DB2, SSIS, C#, COBOL, APIs, CI/CD pipelines, AI services
1mo
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Software Engineer
Stevens Point, Wisconsin, United States
$70k-$95k/yr OnsiteFull Time
Berkshire Hathaway Specialty Insurance
Berkshire Hathaway Specialty InsuranceNYSE: BRK.A: Provides commercial property, casualty, and specialty insurance coverages globally.
2+ YOE2–6 years software development experience; Bachelor’s or Associate’s in CS or related preferred; full-stack development, API design, unit testing, cloud and container familiarity, version control, Agile experience.
2w
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Senior Backend Developer
Tennessee or Idaho or Arkansas or Nebraska or Louisiana or Missouri or Texas or Indiana or Nevada or Kentucky or Mississippi or Florida or South Carolina or West Virginia or New Mexico or North Carolina or Oklahoma or South Dakota or Alabama or Utah or Kansas or Iowa or Pennsylvania or Michigan or Wisconsin or Georgia or Montana or Arizona or North Dakota or Wyoming
RemoteFull Time
Sedgwick
Sedgwick: Provides global insurance claims management and risk services.
7+ YOEBachelor's in CS/Engineering, 7+ years backend development, proficiency in Java/C#/Python/Node.js, REST/microservices, legacy integrations, SQL/NoSQL, Docker/Kubernetes, Kafka/RabbitMQ, API security and observability.
Java, C#, Python, Node.js, SOAP, XML, JSON, SQL Server, Oracle, PostgreSQL, Redis, Docker, Kubernetes, Kafka, RabbitMQ, OpenAPI/Swagger, JDBC/ODBC, OAuth2, JWT, mutual TLS, SAML, API gateways, service meshes, message queues
2w
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Software Developer (GIS)
Waukesha, Wisconsin, United States
OnsiteFull Time
Ruekert & Mielke
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.
ArcGIS Pro, ArcGIS Online, ArcGIS Enterprise, ArcGIS Dashboards, ArcGIS Field Maps, Survey123, VertiGIS Studio, AWS, SQL, NoSQL, REST APIs, Python, JavaScript, TypeScript
2w
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Enterprise Application Developer II
Madison or Cedar Rapids
$79k-$102k/yr OnsiteFull Time
Alliant Energy
Alliant EnergyNASDAQ: LNT: Provides regulated electricity and natural gas services to customers.
3+ YOE3 years related experience; preferred bachelor's in IT; experience with React, APIs, Azure, Sitecore, integrations, Agile; apply AI and DevSecOps practices.
React, APIs, Azure, Sitecore, DevSecOps, Artificial Intelligence
3d
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Full Stack Developer
Green Bay or California or Colorado or Illinois or Minnesota or New Jersey or New York or Oregon or Washington or United States
RemoteFull Time
Syms Strategic Group
Syms Strategic Group: Provides IT and professional services to federal government agencies.
8+ YOE8+ years software development with strong back-end focus (Java and/or NodeJS), Angular front-end, AWS cloud experience, RESTful API design, Public Trust eligibility, and U.S. citizenship.
Java, NodeJS, Angular, C#, .Net, AWS, API Gateway, Lambda, S3, CloudWatch, Git, GitHub, JUnit, Jest, JIRA, Docker, ECS, EKS, Microsoft Teams, XML, JSON, Electronic Data Interchange X.12 (EDI)
1mo
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Software Engineer
Delafield, Wisconsin, United States
OnsiteFull Time
Evans Transportation Services
Evans Transportation Services: Provides third-party logistics and end-to-end transportation management solutions.
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
4w
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Product Engineer
Arkansas or Arizona or Colorado or Florida or Georgia or Idaho or Indiana or Illinois or Iowa or Kansas or Massachusetts or Maryland or Minnesota or Missouri or Montana or North Carolina or New Mexico or Nevada or New York or Ohio or Oklahoma or Oregon or Rhode Island or South Carolina or Tennessee or Texas or Utah or Virginia or Washington or Wisconsin or West Virginia
$130k-$160k/yr RemoteFull Time
OpenEd
OpenEd: Personalized online education program partnering with public schools.
3+ YOE3-5 years professional software development experience; strong React and modern Typescript skills; CS degree, bootcamp, or equivalent; experience with HTML/CSS and API integration; strong communication and remote work ability.
React, NextJS, Typescript, HTML, CSS
2mo
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Sr. Software Engineer
Milford or Cocoa Beach or Orlando or Sioux Falls or Orlando or Jacksonville or Columbus or York Haven or Birmingham or Augusta or Nashville or Houston or Dallas or Albuquerque or Columbia or Milwaukee or McAllen or El Paso or San Antonio or Salt Lake City or Charlotte or Phoenix or Sunrise or Louisville or Sunrise
$150k-$175k/yr OnsiteFull Time
BeneLynk
BeneLynk: Provides social care advocacy and government benefit enrollment assistance.
8+ YOE8+ years software development; strong in C#/.NET; REST APIs; Azure; scalable SaaS; distributed teams; healthcare/regulatory context.
C#, NET, REST APIs, Azure, SQL, SaaS
1d
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Senior Software Development Engineer
Illinois or Mississippi or Montana or North Carolina or Louisiana or Maryland or Maine or Minnesota or Nebraska or Missouri or North Dakota or New York or New Jersey or New Mexico or Nevada or Ohio or South Carolina or Texas or Rhode Island or South Dakota or Vermont or Tennessee or Virginia or Washington or Utah or Wisconsin or West Virginia or Oregon or Wyoming or Oklahoma or Pennsylvania or Colorado or Alabama or Arizona or California or Connecticut or District of Columbia or Florida or Iowa or Arkansas or Idaho or Kansas or Delaware or Georgia or Indiana or Kentucky or Michigan or Massachusetts or New Hampshire
$83k-$222k/yr RemoteFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
5+ YOE5+ years backend software development with Java and Spring Boot, experience in microservices, GraphQL/REST APIs, databases, cloud-native patterns, CI/CD, code reviews, and mentoring.
Java, Spring Boot, GraphQL, RESTful APIs, NoSQL, Git, GCP, Cloud Spanner, Pub/Sub, GKE, Cloud Functions, Kafka
1mo
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Application Development Engineer (Hybrid)
Madison, Wisconsin, United States
$80k-$131k/yr HybridFull Time
American Family Insurance
American Family Insurance: Provides diverse insurance products and comprehensive financial services.
2+ YOEProficiency with Guidewire (Gosu) and PolicyCenter/BillingCenter/ClaimCenter, AI/ML and generative AI integration, GW Cloud migration experience, SQL, APIs, CI/CD, SDLC, Agile; 2+ years Guidewire/product upgrade experience.
GOSU, Guidewire PolicyCenter, Guidewire BillingCenter, Guidewire ClaimCenter, PCF, GW Cloud, AI/ML, SQL, APIs, web services, CI/CD
4d
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^Custom Software Engineer - 6380864
Milwaukee, Wisconsin, United States
HybridFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
1+ YOE1+ year IT/application support experience; familiarity with parts/inventory/order management or supply chain processes; basic SQL, APIs, batch processing knowledge; experience with ticketing tools.
ServiceNow, Remedy, Jira Service Management, SQL, APIs
2w
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Senior Software Engineer
Wausau, Wisconsin, United States
$92k-$164k/yr OnsiteFull Time
UnitedHealth Group
UnitedHealth GroupNYSE: UNH: Provides health insurance and technology-enabled health care services.
6+ YOE6+ years software engineering with strong SQL/Oracle/PL/SQL and Unix scripting; production support experience; experience with Snowflake, Kafka, GitHub, CI/CD, Apache Airflow, APIs and AI/ML; on-call production support experience.
SQL, Oracle, PL/SQL, Unix Scripting, AI/ML, Snowflake, APIs, GitHub, Git, Jenkins, GitLab, Kafka, Apache Airflow, Tivoli Workload Scheduler (TWSd), Java, .NET, React, Rally, Jira