73 api engineer jobs at 40 companies in Hartford, WI

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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
1w
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Automation Engineer
Milwaukee, Wisconsin, United States
$85k-$90k/yr OnsiteFull Time
Milwaukee Bucks
Milwaukee Bucks: Operates a professional basketball team and multi-purpose entertainment venue.
5+ YOEBachelor's or equivalent experience,5+ years software development and API experience,Python/C/C++ preferred,Anthropic Claude preferred,Agile and project management experience,ability to travel and work flexible hours.
Anthropic Claude, Python, C, C++, APIs, Agile Framework
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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 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
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Senior Palantir Engineer
Austin or Charlotte or Naples or Hudson or Milwaukee
OnsiteFull Time
CliftonLarsonAllen
CliftonLarsonAllen: Professional services firm providing audit, tax, and consulting services.
4+ YOE4+ years relevant experience, Bachelor’s degree, Palantir Foundry experience preferred, proficiency with TypeScript, JavaScript, Python, SQL, APIs, Git, CI/CD, and agentic/LLM development.
Palantir Foundry, TypeScript, JavaScript, Python, SQL, APIs, Git, CI/CD, MCP, LLMs
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Integration Developer - Integrations, Data & AI Solutions
Pewaukee, Wisconsin, United States
HybridFull Time
Boelter
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
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Senior DevOps Engineer
Milwaukee, Wisconsin, United States
OnsiteFull Time
Fiserv
FiservNew York Stock Exchange: FI: Provides financial technology solutions for merchants and financial institutions.
4+ YOEBachelor's or Master’s in CS/CE; 2-4 years software engineering; cloud infra (AWS/Azure/GCP); Kubernetes, Docker, Terraform; scripting; API testing; PostgreSQL; observability.
AWS, Azure, GCP, Traefik, Confluent, Kafka, RabbitMQ, Kubernetes, Helm, ArgoCD, Argo Workflows, Docker, HashiCorp Vault, Terraform, Rundeck, GitLab, Python, Shell Scripting, PowerShell, Swagger, Postman, PostgreSQL, pgAdmin, Datadog, OpenTelemetry, Prometheus
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Software Engineer
Wauwatosa or Bellevue or Grand Rapids or Atlanta
$77k-$105k/yr OnsiteFull Time
KION Group
KION GroupXETRA: KGX: Provides industrial trucks and automated supply chain solutions globally.
2+ YOEBachelor's degree in CS or Software Engineering, minimum 2 years professional software development, proficiency in C/C++/C#, version control (Azure TFS or Git), RESTful APIs, Agile methodologies, strong communication and problem-solving.
C, C++, C#, Azure TFS, Git, RESTful API
3w
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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
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AI Solutions Engineer
Milwaukee or United States
$124k-$235k/yr HybridFull Time
Baker Tilly
Baker Tilly: Provides audit, tax, and consulting services to business clients.
3+ YOEBachelor's in CS/IT or equivalent; 3+ years in cloud apps (AWS); AI/Agent-based solutions; API data integration; Python/JavaScript; AWS containers/serverless; experience with AI tools; US work authorization.
AWS, Python, JavaScript, Node.js, React, SQL, NoSQL, Sage Intacct, APIs, Amazon Bedrock, Cursor, Windsurf, Claude Code
2w
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Senior Configuration Management Engineer
Pleasant Prairie or Milwaukee or Waukegan or Glenview or Kenosha
OnsiteFull Time
Uline
Uline: Distributes shipping, industrial, and packaging materials across North America.
10+ YOEBachelor's or equivalent, 10+ years IT experience, familiarity with ServiceNow/Flexera One/HP Service Manager/BMC Atrium, scripting with PowerShell/Python/SQL/APIs, strong analytical and problem-solving skills.
ServiceNow, Flexera One, HP Service Manager, BMC Atrium, PowerShell, Python, SQL, APIs
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Process Automation Software Engineer
Milwaukee, Wisconsin, United States
OnsiteFull Time
Rockwell Automation
Rockwell AutomationNYSE: ROK: Sells industrial automation hardware and digital manufacturing software solutions.
Bachelor's degree, legal US work authorization, experience with Logix/FactoryTalk platforms, cloud/edge integrations, APIs/microservices, JavaScript/TypeScript or C#/.NET.
Studio 5000 Logix Designer, Logix Designer, FactoryTalk Design Studio, FactoryTalk Optix, FactoryTalk DataMosaix, Plex, Fiix, OPC UA, JavaScript, TypeScript, C#, .NET, Time-Series Databases, APIs, microservices, container-based systems
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Marketing Technology Engineer
West Bend or United States
$76k-$96k/yr HybridFull Time
Delta Defense
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.
JSON, Regex, Liquid, HTML, CSS, SQL, JavaScript, APIs, Webhooks, Braze, Segment, Google Tag Manager, GA4, Salesforce, CMS tools, A/B testing tools, analytics platforms, browser developer tools
2mo
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Software Engineer lll - ERP
Waterloo, Wisconsin, United States
OnsiteFull Time
Trek Bicycle
Trek Bicycle: Designs, manufactures, and retails bicycles and related cycling gear.
5+ YOE5+ years ERP development; JDE expertise; end-to-end ERP lifecycle; mentor junior engineers.
JDE Orchestrator, Form Design Aid, Report Design Aid, Business Function development, APIs, EDI, web services, middleware, data integration
2w
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Sr Threat Hunt Engineer
Milwaukee or New York City or Wisconsin
$119k-$178k/yr HybridFull Time
Northwestern Mutual
Northwestern Mutual: Provides life insurance and financial planning services to individuals.
5+ YOE5+ years in threat intelligence/hunting/detection engineering; strong scripting (Python), SIEM/EDR experience, REST API and automation skills, MITRE ATT&CK knowledge, ability to communicate technical findings.
Python, PowerShell, Bash, REST APIs, SIEM, EDR, SOAR, CI/CD, MITRE ATT&CK, OSINT
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Applied AI Engineer, Internal Tools
Boston or Milwaukee or Maitland
$104k-$178k/yr HybridFull Time
Alegeus
Alegeus: Provides technology platforms for managing healthcare benefit accounts.
3+ YOE3+ years building applied AI/automation/internal tools; experience with ChatGPT, Microsoft Copilot, APIs, and structured data; strong prototyping, productization, and cross-functional collaboration; Bachelor's in related field or equivalent experience.
ChatGPT, Microsoft Copilot, APIs
3w
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Windchill Engineer
Milwaukee, Wisconsin, United States
$120k-$140k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
8+ YOE8+ years experience developing and integrating Windchill modules using Java and Windchill APIs; CI/CD knowledge; technical design and documentation skills; bachelor's in computer science.
Windchill, PDMLink, ProjectLink, MPMLink, Java, CI/CD Pipeline, Windchill APIs
1w
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Software Engineer
Wauwatosa or Bellevue or Grand Rapids or Atlanta
$77k-$105k/yr OnsiteFull Time
KION Group
KION GroupFrankfurt Stock Exchange: KGX: Supplies industrial trucks and automated supply chain technology.
2+ YOEBachelor's in CS or related, 2+ years professional software development, proficiency in C/C++/C#, Azure TFS or Git, RESTful API and microservices experience, strong communication and problem-solving.
C, C++, C#, Azure TFS, Git, RESTful API, microservices
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Senior Digital Workplace Engineer
Milwaukee, Wisconsin, United States
OnsiteFull Time
Direct Supply
Direct Supply: Supplies equipment and technology to senior living communities.
5+ YOEBachelor's in IT/CS required, 5+ years in infrastructure or systems engineering focused on collaboration and identity; deep Microsoft 365 and Entra ID/Azure AD expertise, PowerShell and Python scripting, Graph API, AI/Copilot integrations, and automation experience.
Microsoft 365, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Microsoft Entra ID, Microsoft Copilot, ChatGPT, Microsoft PowerShell, Microsoft Power Automate, Microsoft Graph API, Python, Workday
2w
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Python Engineer
Milwaukee, Wisconsin, United States
$100k-$130k/yr HybridFull Time
Allspring Global Investments
Allspring Global Investments: Provides global asset management and investment advisory services.
3+ YOEBachelor's degree and 3+ years Python development experience; experience with APIs, data processing (Pandas/NumPy), SQL, FastAPI, cloud/AWS, CI/CD, testing, and Agile delivery; must be authorized to work in the U.S.
Python 3.10+, Pandas, NumPy, Matplotlib, Plotly, Bokeh, Streamlit, PostgreSQL, Microsoft SQL Server, Snowflake, FastAPI, Swagger/OpenAPI, Postman, AWS ECS, AWS EC2, AWS Lambda, AWS IAM, pytest, Git, Jenkins, Docker, Kubernetes, Microsoft Power Platform, Power BI, Dataverse, SQL