33 senior react engineer jobs at 22 companies in Oconomowoc, WI

3w
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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
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
3mo
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Senior Staff Quality Engineer
Austin or Madison
OnsiteFull Time
Findhelp
Findhelp: Building digital infrastructure for connecting people to social services.
5+ YOE5+ years QA experience in agile environments; designing and implementing test automation (keyword-driven, POM); API automation; Python and PyTest proficiency; familiarity with Robot Framework or Playwright, JavaScript/React, Google Cloud, and Elastic Stack.
Python, PyTest, Robot Framework, Playwright, Javascript, React, Google Cloud, Elastic Stack (Elasticsearch, Kibana), CI/CD, RESTful, SOAP
6h
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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
Roo
Roo: Digital marketplace connecting veterinary professionals with animal hospital shifts.
Significant production software experience with deep React and TypeScript expertise, full-stack fundamentals, mobile experience, design systems, Figma, and hands-on AI-assisted development.
React, TypeScript, React Native, Figma, Cursor, Claude, Storybook, style-dictionary, Framer Motion, Rive, Lottie, Expo
6d
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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
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
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
4w
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Senior Engineering Manager
Milwaukee or United States
RemoteFull Time
Sift Healthcare
Sift Healthcare: AI-powered platform for healthcare revenue cycle and payment optimization
Proven engineering management experience; deep front-end expertise with React, Next.js, and TypeScript; experience with SMART on FHIR and EMR integrations; familiarity with Python, dbt, and SQL; strong communication and leadership skills.
React, Next.js, TypeScript, Python, dbt, SQL, Claude Code, Cursor, Copilot, SMART on FHIR, SMART/OAuth2, FHIR R4, CDS Hooks, HL7 v2, EMR
3mo
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Staff Software 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 degree in CS or related field; 4+ years in software development; experience with React, TypeScript, Java, Spring Boot; REST APIs; MySQL and MongoDB; distributed web systems; agile practices; leadership experience.
React, Webpack, TypeScript, CSS, HTML, Jest, MySQL, MongoDB, Java, SpringBoot
6d
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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
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
1mo
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Geospatial Cyber Security Engineer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles or Virginia or Sun Prairie
OnsiteFull Time
NV5
NV5NASDAQ: NVEE: Technical engineering and consulting for infrastructure and energy projects.
5+ YOETop Secret/SCI required; Bachelor's in CS/Engineering; 5+ years experience; RMF/A&A, NIST 800-53, XACTA/eMASS, ACAS, Linux/Windows hardening, vulnerability management, strong communication.
XACTA, eMASS, ACAS, Python, Java, React, Jira, Confluence, RedHat/CentOS
1mo
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Full Stack Engineer Manager
New York or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Seattle or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$80k-$294k/yr HybridFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
8+ YOEBachelor's degree or equivalent experience; 8+ years Python; 2+ years platform engineering; 1+ year with two of Linux admin, Docker/Kubernetes, modern JavaScript framework or DevOps; 1+ year Terraform; strong communication and problem-solving.
Python, Linux, Docker, Kubernetes, React, NodeJS, Terraform, EC2, Lambda, EKS, Fargate
1w
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Lead C# / .NET / Azure Software Engineer
Hopkins or Atlanta or Chicago or Brookfield or Irving
$133k-$157k/yr HybridFull Time
U.S. Bank
U.S. BankNYSE: USB: Provider of personal, business, and institutional financial services.
6+ YOE6–8+ years software engineering experience, strong C#/.NET Core and Azure skills, SPA and microservices experience, MS SQL performance tuning, CI/CD and containerization knowledge, bachelor's degree or equivalent.
C#, .NET Core, Azure, AKS, Azure SQL, REST APIs, React, Angular, Typescript, Entity Framework Core, Dapper, Microsoft SQL, Kubernetes, Jenkins, Azure DevOps, JFrog Artifactory, GitLab, Docker, Helm Chart, Rancher, ForgeRock, OIDC, xUnit, SpecFlow, PostMan, Jasmine, WebdriverIO, Azure Service Bus, Kafka, RabbitMQ
1w
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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
1w
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Front End Developer
Germantown, Wisconsin, United States
HybridFull Time
Ellsworth Corporation
Ellsworth Corporation: Global distributor and manufacturer of specialty chemicals and adhesives.
5+ YOE5+ years front-end experience with HTML/CSS/JavaScript and modern frameworks; experience with Makeswift or BigCommerce page builders, accessibility (WCAG), responsive design, API integration, and Git. Bachelor's degree preferred.
HTML, CSS, JavaScript, Makeswift, Big Commerce B2B Page Builder, BigCommerce B2B Page Builder, React, Vue, Angular, Git
2mo
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Javascript - Senior Developers - AI Training - Milwaukee, US
Milwaukee or United States
$50/hr RemoteContract
Prolific
Prolific: Platform connecting researchers and AI developers with verified participants.
BS/MS/PhD in CS or related field, professional experience building scalable JavaScript/TypeScript web apps, ability to solve LeetCode Medium–Hard problems, deep JS knowledge (event loop, closures, async), and strong code quality standards.
JavaScript (ES6+), TypeScript, React, Node.js, Vue, Angular, Jest, Cypress, Webpack, Vite, GraphQL, RESTful APIs, LeetCode
1w
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Manager, Software Engineering - IntelliScript (Remote)
Brookfield, Wisconsin, United States
$118k-$223k/yr RemoteFull Time
Milliman
Milliman: Global provider of actuarial and risk management consulting services.
10+ YOE3+ Mgmt10+ years software engineering experience including 3+ years managing engineers; strong backend, data pipeline, cloud (AWS), C#/.NET, React, API, CI/CD and Agile experience; GenAI-enabled development familiarity.
C#, .NET, React, AWS, CI/CD, REST
1mo
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Assistant Director, Software Engineering-Real Estate
Milwaukee, Wisconsin, United States
$160k-$240k/yr HybridFull Time
Northwestern Mutual
Northwestern Mutual: Provides life insurance and financial planning services to individuals.
8+ YOE8+ years software and data engineering experience, proven technical leadership, people management, expertise with React, Node.js, REST APIs, dbt, Snowflake, and delivering secure, scalable systems.
React, Node.js, REST APIs, dbt, Snowflake, CI/CD
1mo
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IT Enterprise Solution Architect
Hartland, Wisconsin, United States
OnsiteFull Time
Batteries Plus
Batteries Plus: Sells and services specialty batteries, light bulbs, and mobile devices.
7+ YOEBachelor's degree in CS/IS/Engineering, 7+ years in solution architecture, expertise with API-first, microservices, cloud-native and serverless, Microsoft Azure, .NET, Angular/React, CI/CD and DevOps practices, experience with enterprise retail platforms.
Microsoft Azure, .NET, Angular, React, CI/CD pipelines, POS, ERP, CRM, eCommerce, WMS, PIM