204 api engineer jobs at 121 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
9h
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Sr. Quality Engineer
United States or Alabama or Arizona or California or Colorado or Connecticut or Florida or Georgia or Idaho or Illinois or Indiana or Iowa or Kansas or Louisiana or Maryland or Massachusetts or Michigan or Minnesota or Missouri or Mississippi or North Carolina or Nebraska or New Jersey or Nevada or New York or Ohio or Oklahoma or Oregon or Pennsylvania or South Carolina or Tennessee or Texas or Utah or Virginia or Washington or Wisconsin or Wyoming
$120k-$130k/yr RemoteFull Time
Storable
Storable: Provides technology platform for storage and specialty real estate operators.
5+ YOE5+ years QA/quality engineering experience, strong test strategy, API and data validation, SQL, CI/CD familiarity, test automation experience, and practical use of AI-assisted tools.
Cypress, Selenium, TestNG, Cucumber/Gherkin, SQL, GitHub, GitLab, Jira, Confluence, Node.js, TypeScript, JavaScript, Codex, Claude Code, Cursor, GitHub Copilot, ChatGPT
3w
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Senior Technical Marketing Engineer - Apstra Data Center
California or Wyoming or Utah or Texas or Pennsylvania or New Hampshire or Wisconsin or Virginia or South Dakota or New Mexico or Michigan or Indiana or Hawaii or New York or Arkansas or Oregon or Ohio or Nevada or Nebraska or Minnesota or Louisiana or Florida or Tennessee or Missouri or Maine or Kansas or Iowa or Arizona or Rhode Island or New Jersey or Georgia or North Carolina or Montana or Mississippi or Massachusetts or Oklahoma or Kentucky or Illinois or Alaska or North Dakota or Idaho or District of Columbia or Connecticut or Colorado or Maryland or Delaware or Alabama or West Virginia or Washington or Vermont or South Carolina
$137k-$277k/yr RemoteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
8+ YOEBachelor's degree in CS/CE/EE or related, 8+ years technical marketing/systems engineering experience, deep data center networking knowledge, hands-on automation experience (APIs, Python, Ansible, Terraform), strong communication and content development skills.
HPE Apstra, APIs, Python, Ansible, Terraform, large language model (LLM)
3w
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Controls Engineer
Menomonee Falls, Wisconsin, United States
OnsiteFull Time
Milwaukee Tool
Milwaukee ToolHong Kong Stock Exchange: 0669: Manufacturer of professional-grade power tools and jobsite solutions.
2+ YOEBachelor's in engineering, 2+ years in machine controls/automation, PLC/HMI programming, Python, industrial networking and data systems, project leadership, and ability to support equipment commissioning and supplier integration.
PLCs, HMIs, Python, OPC-UA, MQTT, SQL, APIs, data historians, edge devices, robots, vision, safety devices, laser systems, drives, Microsoft Office, Microsoft Project, Microsoft Power BI, Microsoft Visio
3w
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Senior Technical Marketing Engineer - Apstra Data Center
California or Wyoming or Utah or Texas or Pennsylvania or New Hampshire or Wisconsin or Virginia or South Dakota or New Mexico or Michigan or Indiana or Hawaii or New York or Arkansas or Oregon or Ohio or Nevada or Nebraska or Minnesota or Louisiana or Florida or Tennessee or Missouri or Maine or Kansas or Iowa or Arizona or Rhode Island or New Jersey or Georgia or North Carolina or Montana or Mississippi or Massachusetts or Oklahoma or Kentucky or Illinois or Alaska or North Dakota or Idaho or District of Columbia or Connecticut or Colorado or Maryland or Delaware or Alabama or West Virginia or Washington or Vermont or South Carolina
$137k-$277k/yr RemoteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides edge-to-cloud IT infrastructure and platform services.
8+ YOE8+ years in technical marketing/systems engineering/solutions architecture; degree in CS/CE/EE or related; strong data center networking knowledge (BGP, EVPN/VXLAN, spine-leaf, IP fabrics); experience with APIs, Python, Ansible, Terraform; excellent communication and demo/content development skills.
Apstra, APIs, Python, Ansible, Terraform
3w
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Senior Technical Marketing Engineer - Apstra Data Center
California or Wyoming or Utah or Texas or Pennsylvania or New Hampshire or Wisconsin or Virginia or South Dakota or New Mexico or Michigan or Indiana or Hawaii or New York or Arkansas or Oregon or Ohio or Nevada or Nebraska or Minnesota or Louisiana or Florida or Tennessee or Missouri or Maine or Kansas or Iowa or Arizona or Rhode Island or New Jersey or Georgia or North Carolina or Montana or Mississippi or Massachusetts or Oklahoma or Kentucky or Illinois or Alaska or North Dakota or Idaho or District of Columbia or Connecticut or Colorado or Maryland or Delaware or Alabama or West Virginia or Washington or Vermont or South Carolina
$137k-$277k/yr RemoteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
8+ YOEBachelor's/Masters/PhD in CS/CE/EE or related; 8+ years in technical marketing/systems engineering/solutions architecture or similar; deep data center networking knowledge (IP fabrics, spine-leaf, BGP, EVPN/VXLAN); hands-on automation with APIs, Python, Ansible, Terraform; strong content, demo, and presentation skills.
APIs, Python, Ansible, Terraform, HPE Apstra, LLM
4w
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Senior Electrical Engineer -Power (Madison, WI, US, 53706)
Duluth or Minneapolis or Saint Paul or Omaha or Nashville or Pittsburgh or Houston or Traverse City or Madison
$120k-$170k/yr HybridFull Time
Lake Superior Consulting
Lake Superior Consulting: Technical engineering and integrity services for critical energy infrastructure.
10+ YOEBachelor's in Electrical Engineering, PE license, 10+ years electrical engineering experience, technical leadership, experience with SKM or ETAP, strong knowledge of NEC/NFPA/IEEE/API/AGA and industrial power systems.
SKM, ETAP
1mo
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Automation Systems Engineer
Oshkosh, Wisconsin, United States
OnsiteFull Time
Amcor
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.
Rockwell Automation, Inductive Automation Ignition, Fanuc Robotics, Cognex Vision Systems, Keyence Vision Systems, SQL, OPC UA, MQTT, REST API, AGVs, AMRs, AS/RS, EtherNet/IP, Profinet, Modbus, IoT, MES, SCADA, Industrial Networking
6d
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Senior Integrations Engineer
Delafield, Wisconsin, United States
OnsiteFull Time
Evans Transportation Services
Evans Transportation Services: Provides third-party logistics and end-to-end transportation management solutions.
Hands-on experience implementing enterprise API and event-driven integrations, knowledge of JSON/XML/data mapping, OAuth/OpenID Connect, AWS, and ability to lead technical discovery and communicate with stakeholders.
REST, JSON, XML, OAuth, OpenID Connect, Amazon Web Services (AWS), Boomi, MuleSoft, EDI, .NET
1w
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Senior Field Application Engineer - AI Compute Systems
Wisconsin or United States
$132k-$253k/yr RemoteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
5+ YOE5+ years in system design or technical customer support for datacenter hardware; BS/MS in engineering or CS (or equivalent); knowledge of servers, storage, networking; strong analytical and communication skills.
TCP/IP, RDMA, RoCE, NICs, Switches, Embedded Linux, APIs, GPU
1w
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Senior AI Platform Engineer
San Francisco or Alabama or Arkansas or California or Colorado or Florida or Georgia or Illinois or Kentucky or Massachusetts or Michigan or Montana or Missouri or Nevada or New Jersey or New York or North Carolina or Oregon or Pennsylvania or Texas or Washington or Utah or Virginia or Wisconsin
$156k-$231k/yr HybridFull Time
Afresh
Afresh: AI-powered inventory management for grocery store fresh food departments.
3+ YOE3+ years building production software or ML/data systems; strong Python and systems/API design; experience with LLM retrieval/RAG, agents, evaluation, Databricks/MLflow and modern data stacks.
Python, PySpark, dbt, Databricks, Delta Lake, Unity Catalog, MLflow, Astronomer, Airflow, Claude, GitHub, Shortcut, Notion, pgvector, Pinecone, Weaviate, LangGraph, MCP
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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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
2d
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Sr TME for AI Security, API Security & DevOps
Texas or Alaska or Arizona or Arkansas or California or Colorado or Delaware or Florida or Georgia or Idaho or Illinois or Indiana or Iowa or Kansas or Kentucky or Louisiana or Maine or Maryland or Massachusetts or Michigan or Minnesota or Mississippi or Missouri or Montana or Nebraska or Nevada or New Hampshire or New Jersey or New Mexico or New York or North Carolina or North Dakota or Ohio or Oklahoma or Oregon or Pennsylvania or Rhode Island or South Carolina or South Dakota or Tennessee or Utah or Vermont or Virginia or West Virginia or Alabama or Wisconsin or Wyoming or New York (Metro)
$126k-$190k/yr RemoteFull Time
F5
F5NASDAQ: FFIV: Provides application delivery networking and multi-cloud security solutions.
8+ YOE8+ years technical experience; proficiency with Terraform, Ansible, cloud platforms, Kubernetes/Docker; strong application security knowledge (WAF, OWASP, API Security); scripting, automation, and technical content creation skills.
Terraform, Ansible, Kubernetes, Docker, AWS, Azure, GCP, GitHub, BIG-IP, NGINX, F5 Distributed Cloud, F5 AI Guardrails, OWASP, MITRE ATLAS
1mo
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AI Solutions - Agent Engineer
United States or Delaware or Florida or Iowa or Illinois or Indiana or Kentucky or Maryland or Michigan or Minnesota or Missouri or Maine or Nebraska or North Dakota or New Jersey or Pennsylvania or Rhode Island or South Dakota or Texas or Wisconsin
$110k-$176k/yr RemoteFull Time
Marco Technologies
Marco Technologies: Provides managed IT, cloud, and business printing services.
3+ YOEBachelor's degree; 3+ years software/solution engineering experience; hands-on with LLMs, agent systems, Python, APIs/SDKs; cloud and production deployment experience; strong communication and problem-solving.
Python, APIs, SDKs, LLMs
23h
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Artificial Intelligence Engineer III
Madison or Kingwood
HybridFull Time
Insperity
InsperityNew York Stock Exchange: NSP: Provides human resources and business performance solutions to businesses.
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
3w
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Sales Engineer - Mid-West US (Minnesota)
Minnesota or Wisconsin or St. Louis
RemoteFull Time
BlinkOps
BlinkOps: Agentic security automation platform for enterprise workflows.
3+ YOE3+ years in sales/solutions engineering for cybersecurity; strong security operations knowledge; hands-on with APIs, JSON, YAML, jq; experience with SIEM, SOAR, EDR, IAM, cloud services; demo and POC execution skills.
APIs, JSON, YAML, jq, SIEM, SOAR, EDR, IAM, GRC, AWS, Azure, GCP, Blink UI
3mo
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Security Engineer
Milwaukee, Wisconsin, United States
OnsiteFull Time
Fiserv
FiservNew York Stock Exchange: FI: Provides financial technology solutions for merchants and financial institutions.
2+ YOEBachelor's degree in Engineering or related field; 2 years in cybersecurity with WAF, IAM, vulnerability management, API security, PCI infra, IaC, cloud, SSL/IPsec VPN.
Radware, Cloudflare, F5 ASM, Cloud Identity and Access Management, Vulnerability management, CVE triage, OWASP Top 10 API vulnerabilities, GCP IAM, Infrastructure as Code, SSL, IPsec VPN
2w
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Data Engineer - .NET Web Development
Middleton or Madison
OnsiteFull Time
Sentry Insurance
Sentry Insurance: Provides commercial insurance, life insurance, and retirement plans.
2+ YOEBachelors required; minimum 2 years data engineering experience. Proficiency with Microsoft .NET, C#, REST API, JavaScript, ASP.NET MVC, SQL Server, Visual Studio/VS Code/SSMS, Git, Postman, Bootstrap, AutoMapper; agile and software design principles.
Microsoft .NET, C#, REST API, JavaScript, ASP.NET MVC, HTML, CSS, SQL Server, Microsoft Visual Studio, Microsoft Visual Studio Code, Microsoft SQL Server Management Studio, Git, Postman, Bootstrap, AutoMapper
2mo
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Application Developer
Madison, Wisconsin, United States
OnsiteFull Time
Sub-Zero Group
Sub-Zero Group: Manufactures premium luxury kitchen refrigeration and cooking appliances.
Experience engineering and supporting Microsoft Dynamics 365 CE and Dataverse; Power Automate; data modeling; SQL; REST APIs.
Microsoft Dynamics 365 CE, Dataverse, Power Automate, SQL, REST APIs, JSON