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20 senior react developer jobs at 11 companies in Janesville, WI

3mo
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Senior Fullstack Engineer, Solve
Austin or Madison or San Francisco
$145k-$217k/yr HybridFull Time
Zendesk
Zendesk: Provides cloud-based software for customer service and support.
3+ YOE3+ years of production software experience; backend-first with APIs, async systems, integrations, and real-time systems; ownership of features end-to-end; experience with real-time or event-driven tech such as WebSockets/WebRTC.
Python, FastAPI, React, TypeScript, WebRTC, Redis, MongoDB, LLM / speech
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4d
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Senior Mobile Software Developer
Watertown, Wisconsin, United States
RemoteFull Time
URUS
URUS: Provides cattle genetics and reproductive services for dairy producers.
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
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2mo
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Senior AI Engineer
Minnetonka or Madison
$113k-$170k/yr HybridFull Time
Medica
Medica: Provides health insurance coverage and health plan administration services.
3+ YOE3+ years AI work experience; 5+ years software/platform engineering; Bachelor's degree or equivalent.
Java, Angular, React, Node.js, Flutter, MuleSoft, AWS, Azure, CI/CD, Enterprise search, Content management systems
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2mo
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Senior Staff Software Engineer
Madison or Austin
OnsiteFull Time
Findhelp
Findhelp: Building digital infrastructure for connecting people to social services.
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
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1mo
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Senior Staff Engineer
Madison, Wisconsin, United States
$180k-$220k/yr HybridFull Time
Recovery.com
Recovery.com: Matches patients with mental health and addiction treatment centers.
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
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2w
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Senior Engineer, Internal Developer Platform
Madison or Denver or Boston
$99k-$167k/yr HybridFull Time
American Family Insurance
American Family Insurance: Provides diverse insurance products and comprehensive financial services.
Extensive experience building and operating cloud platforms (AWS/GCP), Kubernetes, IaC (Terraform/Crossplane), CI/CD, Backstage, scripting (Python/Go/Bash) and observability (Datadog).
AWS, GCP, Kubernetes, Docker, EKS, GKE, VPC, IAM, S3, Terraform, Crossplane.io, Backstage.io, TypeScript, Node.js, React, GitLab CI/CD, JFrog Artifactory, Python, Go, Bash, Datadog, Git, Argo CD, Flux, Jenkins, GitHub Actions, Bitbucket, CloudFormation, REST, GraphQL
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4d
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Staff Engineer - Full Stack
Madison, Wisconsin, United States
$145k-$150k/yr HybridFull Time
EnsoData
EnsoData: AI software for automated sleep study analysis and diagnostics.
5+ YOEBachelor's in a relevant field,5+ years experience,strong TypeScript/React and Python (Flask/Django),SQL/Postgres and Mongo,HL7/FHIR experience,AI tool experience,excellent communication and problem-solving.
TypeScript, React.js, Python, Flask, Django, Postgresql, Mongo, HL7, FHIR
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6d
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Microsoft Word Add-In Developer (Contract)
Madison, Wisconsin, United States
OnsiteContract
AkitaBox
AkitaBox: Facility asset lifecycle management and building operations software.
Experience building and publishing Word add-ins with Office.js/Word JavaScript API, production-level TypeScript and React, REST API integration, OAuth2/MSAL authentication, cross-platform Word compatibility, and strong testing/documentation practices.
Office.js, Word JavaScript API, TypeScript, React, Microsoft Authentication Library (MSAL), OAuth 2.0, Fluent UI, RESTful APIs, Microsoft 365, Microsoft marketplace
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1w
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Software Engineer
United States or Austin or Boston or Chattanooga or Chicago or Dallas or Denver or Houston or Jefferson City or Kansas City or Madison or Milwaukee or Minneapolis or Nashville or Omaha or Providence or Springfield or Saint Louis or Washington
$76k-$234k/yr HybridFull Time
Husch Blackwell
Husch Blackwell: A nationwide firm providing industry-focused legal and litigation services.
5+ YOEBachelor's or equivalent,5+ years application engineering experience,full‑stack proficiency with backend focus,experience with generative AI and cloud deployment (Azure preferred),strong architecture and communication skills.
Python, Javascript, TypeScript, React, Vue, Azure, CI/CD, LLM APIs
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1mo
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Principal Agentic Engineer
San Francisco or Madison
$175k-$300k/yr OnsiteFull Time
MGT Insurance
MGT Insurance: AI-driven neo-insurer providing commercial insurance for small businesses.
6+ YOE6+ years experience building LLM-based agents and autonomous systems; expertise with OpenAI GPT/Anthropic Claude, LangChain/CrewAI; strong software engineering in Python and TypeScript; agent architecture and observability experience.
OpenAI GPT, Anthropic Claude, LangChain, CrewAI, Python, TypeScript, React
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1w
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Application Architect
Madison, Wisconsin, United States
$111k-$130k/yr HybridFull Time
State of Wisconsin
State of Wisconsin: State government entity providing public services and administration.
Experience designing/developing applications using Java and major JavaScript frameworks, agile development experience, and technical leadership/architecture skills.
Java, JavaScript, React, Angular
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