102 api engineer jobs at 53 companies in Greendale, 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
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
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
1mo
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Controls Engineer
Menomonee Falls, Wisconsin, United States
OnsiteFull Time
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
2mo
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Mechanical Engineer - Modular Skid Systems
Milwaukee, Wisconsin, United States
OnsiteFull Time
5+ YOEBachelor's in Mechanical Engineering, P.E. license, 5+ years relevant experience with modular skid systems, proficiency with 3D CAD, knowledge of ASME/API/ASTM codes, strong communication and project skills.
3D CAD
2mo
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Mechanical Engineer - Modular Skid Systems
Milwaukee, Wisconsin, United States
OnsiteFull Time
5+ YOEBachelor's in Mechanical Engineering, PE license, 5+ years industry experience with modular skid or packaged systems, proficiency with 3D CAD, knowledge of ASME/API/ASTM, strong communication and project management skills.
3D CAD
3w
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Principal Peptide Process Engineer, Research Scientist II
North Chicago, Illinois, United States
$142k-$269k/yr OnsiteFull Time
Degree in chemical engineering or related field with significant industry experience (varies by degree), expertise in peptide/API process development, technical leadership, and cross-functional collaboration.
4w
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Senior Integrations Engineer
Delafield, Wisconsin, United States
OnsiteFull Time
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
2w
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Systems Engineer Lead
Waukegan, Illinois, United States
OnsiteFull Time
Lead ERP implementation and support, configure integrations and middleware, administer Linux and databases, write SQL, mentor technical staff; bachelor's in related field preferred.
SQL, MySQL, Microsoft SQL Server, Systemd, Cron, OpenSSH, Common Lisp, Python, Go, Power BI, ERP, APIs, middleware, AI-assisted coding tools
1w
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Senior Palantir Engineer
Austin or Charlotte or Naples or Hudson or Milwaukee
OnsiteFull Time
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
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
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Senior DevOps Engineer
Milwaukee, Wisconsin, United States
OnsiteFull Time
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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Senior AI Engineer
Abbott Park or United States
$99k-$199k/yr RemoteFull Time
8+ YOEBachelor's in CS/Engineering/Mathematics (or related) and 8+ years (Master's +6+), strong applied AI/ML experience, Go backend engineering, cloud-native services, distributed systems, REST APIs, SQL/PostgreSQL, Linux, CI/CD, and strong communication.
Go, RESTful APIs, SQL Server, PostgreSQL, Kubernetes, Docker, Terraform, Linux, CI/CD, MLOps, message queues, vector databases
2w
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Software Engineer
Wauwatosa or Bellevue or Grand Rapids or Atlanta
$77k-$105k/yr OnsiteFull Time
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
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
2mo
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AI Solutions Engineer
Milwaukee or United States
$124k-$235k/yr HybridFull Time
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
1w
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Staff Software Engineer - FinOps
Lake Forest, Illinois, United States
$124k-$207k/yr RemoteFull Time
5+ YOEBachelor's or equivalent,5+ years software engineering experience,FinOps and cloud financial governance expertise across AWS/GCP/Azure,fullstack and API development,Infrastructure-as-Code (CloudFormation,CDK,Terraform),distributed systems.
AWS, GCP, Azure, CloudFormation, CDK, Terraform
3w
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Senior Configuration Management Engineer
Pleasant Prairie or Milwaukee or Waukegan or Glenview or Kenosha
OnsiteFull Time
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
2w
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Process Automation Software Engineer
Milwaukee, Wisconsin, United States
OnsiteFull Time
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
2mo
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Marketing Technology Engineer
West Bend or United States
$76k-$96k/yr HybridFull Time
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
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
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