48 senior software development engineer jobs at 29 companies in Fitchburg, WI
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
14h
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Senior Software Engineer
Auburn Hills or Juneau
OnsiteFull Time
6+ YOEBachelor's degree or equivalent experience; 7+ years backend development, 5+ years AWS architecture, Python or TypeScript, SQL, production pipelines, APIs, CI/CD, infrastructure as code, on-call, migrations, and AI tooling.
Amazon Web Services (AWS), Cloudflare, Amazon API Gateway, GraphQL, DynamoDB, AWS IoT Core, Databricks, Amazon Bedrock, TypeScript, Python, SQL, AWS Lambda, Kinesis, Amazon ECS, AWS Identity and Access Management (IAM), REST, CI/CD, infrastructure as code, Docker, Spark, Kafka, JIRA, Confluence, Magento
3mo
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Senior Staff Software Engineer
Madison or Austin
OnsiteFull Time
8+ YOE8+ years professional software development, strong Python and ReactJS experience preferred, good SQL and database knowledge, experience with cloud (GCP preferred), technical writing, design, and mentoring skills.
Python, ReactJS, SQL, GCP
3d
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Senior Software Engineer, Frontend Platform
United States or San Francisco or New York City or Los Angeles or Boston or Seattle or Washington or San Diego or Chicago or Austin or Dallas or Portland or Denver or Philadelphia or Baltimore or Sacramento or Minneapolis or Miami or Atlanta or Phoenix or Orlando or Las Vegas or Salt Lake City or Madison or Birmingham or San Antonio or Spokane or Toronto
$125k-$210k/yr HybridFull Time
Significant production software experience with frontend systems; deep React and TypeScript expertise; full-stack fundamentals; React Native or mobile experience; Figma, design systems, and AI-assisted development experience.
React, TypeScript, React Native, Figma, Cursor, Claude, Storybook, style-dictionary, Framer Motion, Rive, Lottie, Expo
1mo
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Software Engineer
Sun Prairie, Wisconsin, United States
$70k-$100k/yr OnsiteFull Time
5+ YOEBachelor's degree,5+ years professional software development experience,proficiency with Java,Python or C#,REST/SOAP,cloud platforms (AWS/Azure/GCP),Git,CI,Agile and strong communication.
Java, Python, C#, RESTful, SOAP, AWS, Microsoft Azure, Google Cloud, Git
2w
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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
1d
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Senior Software Engineer (PACS) - Full Time - Remote
Machesney Park or Illinois or Georgia or Virginia or Tennessee or South Carolina or Maryland or Nashville
$108k-$120k/yr RemoteFull Time
6+ YOEBachelor's degree or equivalent experience and 6+ years of software engineering experience with C#/.NET, Windows applications, Java, React, PostgreSQL, AWS, testing, CI/CD, and production troubleshooting.
C#, .NET, Java, Spring Boot, PostgreSQL, React, TypeScript, JavaScript, REST APIs, AWS, Docker, ECS, Kubernetes, Terraform, WPF, Windows Forms, Hibernate, JPA, DICOM, HL7, ClearCanvas, Cornerstone, OHIF, Claude Code, GitHub Copilot, OpenAI Codex, Kiro, Cline
3mo
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Principal Software Engineer
Madison, Wisconsin, United States
$153k-$259k/yr OnsiteFull Time
Senior individual contributor with expertise in OO languages, REST/DB, cloud, Agile, and enterprise-scale digital engineering.
C, C++, Java, JavaScript, Python, SQL, PL/SQL, .NET, Google Web Toolkit, JPA, Hibernate, Azure, AWS, JIRA, Confluence
2w
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Senior Mobile Software Developer
Watertown, Wisconsin, United States
RemoteFull Time
6+ YOE6+ years mobile app experience with React Native, offline-first architecture, BLE integrations, synchronization, and mentorship/technical leadership experience.
React Native, Bluetooth Low Energy (BLE), Jira, Gitflow, CI/CD
3w
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Software Engineer/Developer III
Madison, Wisconsin, United States
$90k/yr HybridFull Time
5+ YOE5+ years designing and developing full-stack applications with Microsoft .NET and SQL Server; 2+ years Angular; proficiency with C#, ASP.Net Core, TypeScript, HTML5, CSS, JavaScript, Microsoft Entity Framework, relational databases, and Git.
Microsoft .NET, SQL Server, Angular, C#, ASP.Net Core, TypeScript, HTML5, CSS, JavaScript, Microsoft Entity Framework, Git, OpenIDConnect, Canvas LMS, Salesforce, Salesforce APEX, ClaudeCode, Codex, GitHub Copilot
2mo
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Chief Principal Software Engineer- Cloud
Greenville or Remote or Remote
$119k-$204k/yr HybridFull Time
8+ YOE8+ years backend cloud software development; Azure cloud; C#/.NET; IoT/cloud data platforms; containerization; CI/CD; security and observability.
Azure, C#, NET Core, Docker, Kubernetes, Terraform, GitHub Actions, Event Grid, Event Hub, Azure Functions, CosmosDB, Redis, Azure Monitor, Application Insights
3w
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Leo Cancer Care: Senior Software Engineer – Interoperability
Middleton, Wisconsin, United States
HybridFull Time
5+ YOEDeep DICOM-RT interoperability experience, medical device software under IEC 62304, network integration, 5+ years domain experience, strong Python and C++/C#/Java skills, Linux and Git proficiency, HL7/FHIR familiarity.
DICOM-RT, HL7, FHIR, UML, Python, C++, C#, Java, Linux, Git, gRPC, REST
1mo
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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
3mo
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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
1mo
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Senior Software Engineer Applied AI
Madison or United States
RemoteFull Time
7+ YOE7+ years building and operating production backend systems, production LLM/ML experience, cloud distributed-systems expertise, and disciplined practices for regulated environments.
Python, AWS, LLMs
4d
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Principal Software Engineer
Madison, Wisconsin, United States
$129k-$259k/yr OnsiteFull Time
12+ YOEBachelor’s degree in a relevant technical field or high school diploma with 12 years of relevant experience; expert object-oriented programming, databases, cloud frameworks, Agile tools, and enterprise architecture.
RESTful, Postgres, SQL Server, JPA2, Hibernate, Entities Framework, Azure, Amazon AWS Services/SDKs, JIRA, Confluence, C, C++, Java, JavaScript, Python, SQL, PL/SQL, .NET, Google Web Toolkit, HL7, FHIR, Kafka
4d
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Principal Software Engineer
Madison, Wisconsin, United States
$129k-$259k/yr OnsiteFull Time
Bachelor's degree in a relevant field or high school diploma with 12 years of relevant experience; expertise in object-oriented programming, databases, REST services, cloud frameworks, and Agile tools.
RESTful web services, Postgres, SQL Server, JPA2, Hibernate, Entities Framework, Azure, Amazon AWS Services/SDKs, JIRA, Confluence, C, C++, Java, JavaScript, Python, SQL, PL/SQL, .NET, Google Web Toolkit, HL7, FHIR, Kafka
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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Software Developer 2
Monroe, Wisconsin, United States
OnsiteFull Time
5+ YOEBS or equivalent, 5+ years software development experience, 3+ years with .NET Core/C#, REST APIs, microservices, MySQL/Dynamo, Azure DevOps, Git, AWS; strong problem solving, Agile collaboration, and mentoring ability.
.NET Core, C#, RESTful API, Python, microservices, MySQL, Dynamo, Azure DevOps, Azure Pipelines, Git, AWS, CI/CD
2mo
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Senior Web/App Engineer
Janesville, Wisconsin, United States
$118k-$142k/yr OnsiteFull Time
5+ YOE5+ years software development experience; proficiency in Java, C#, Python, JavaScript; strong system architecture, design patterns, data modeling, cloud and application security knowledge; bachelor's in CS/Engineering preferred; experience with SaaS platforms (Adobe, Oracle) preferred.
Java, C#, Python, JavaScript, Adobe, Oracle
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