293 reactjs jobs at 140 companies in Lafayette, CO

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1w
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Junior Front-End Developer
Westminster, Colorado, United States
$88k-$155k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
2+ YOEBachelor's or equivalent, 2+ years related experience, working knowledge of Python and JavaScript, familiarity with PyQT/ReactJS/Dash/Streamlit, HTML/CSS, basic AI/ML concepts, and ability to work onsite in Denver.
Python, JavaScript, PyQT, ReactJS, Dash, Streamlit, HTML, CSS, Git, Azure Machine Learning, Roboflow
3w
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Principal Software Engineer
Golden, Colorado, United States
$195k-$250k/yr HybridFull Time
Tradeweb Markets
Tradeweb MarketsNasdaq: TW: Operates electronic marketplaces for fixed income and derivatives trading.
8+ YOE8+ years full-stack engineering experience, 5+ years contributing to architecture, AWS/cloud experience, Java Spring/Python or Rust, SQL, ReactJS, REST/RPC, experience with resilient distributed systems and mentoring skills.
Anthropic Claude, Java Spring, Python, Rust, SQL, ReactJS, REST, RPC, AWS, CI/CD
2w
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Specialist Software Engineering
Cedar Rapids or Denver or Philadelphia
$131k-$165k/yr HybridFull Time
Transamerica
TransamericaNYSE: AEG: Provides insurance, retirement solutions, and investment products to customers.
12+ YOEBachelor's degree or equivalent, 12+ years software/devops experience, strong CI/CD expertise, Python and Bash scripting, deep AWS, containerization, IaC (Terraform), Java or .NET experience, database and API knowledge.
Harness, Jenkins, Python, Bash, AWS, ECS, EKS, EC2, Lambda, S3, ASG, IAM, Docker, Nexus, Artifactory, Terraform, Visual Studio, git, Github, Maven, AgentCore, Strands, Kiro IDE, .NET, C#, JAVA, Spring Framework, J2EE, SqlServer, DynamoDB, API Gateways, Apache Camel, Swagger, Spring Boot, Spring MVC, Entity Framework, IIS, Kubernetes, Bitbucket, Angular, React, Vue.js, ASP.NET MVC, HTML, JS, CSS, Ajax, Kinesis, Event Hubs
3mo
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Senior Principal - AI Accelerated Engineering Lead
San Francisco or Washington or Denver
$193k-$281k/yr OnsiteFull Time
Slalom
Slalom: Provides business and technology consulting and software engineering services.
8+ YOE8+ years building and operating production software, leadership in system or platform architecture, hands-on GenAI/agent experience, expertise in APIs/microservices/security, proficiency in TypeScript/Node, Python, or Java, cloud and DevOps skills.
GitHub Copilot, Cursor, Claude Code, TypeScript, Node, Python, Java, React, Next, AWS, Azure, GCP, Kubernetes, CI/CD, IaC, LangChain, LlamaIndex, vector databases
2mo
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Full Stack Web Developer
Denver or Sarasota or Sterling
$82k-$172k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOEBS in CS or related field; 5+ years web development; React.js; Flask/Express; Python/TypeScript/JavaScript; PostgreSQL; REST APIs; Git; TS/SCI clearance (active)
React.js, Flask, Express.js, Python, HTML5, CSS3, TypeScript, JavaScript, PostgreSQL, Git, Docker
3d
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Senior Scientific Software Engineer
Broomfield or Fort Collins
$190k-$252k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
8+ YOEBachelor's in CS/Engineering/Math/Physics or equivalent,8+ years experience,proficiency in C++ and Python,strong math foundation,software engineering fundamentals,and ability to obtain Top Secret/SCI clearance.
C++, Python, SQL, NoSQL, MATLAB, Simulink, JavaScript, React, Node.js
1w
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Senior Software Engineer, Offers
Denver, Colorado, United States
$125k-$155k/yr HybridFull Time
bet365
bet365: Provides global online sports betting and digital casino games.
Experience leading development teams, mentoring developers, cloud platform experience, knowledge of React, Typescript, Go/Golang, SQL and Kafka; strong problem-solving and delivery focus.
Go, Typescript, React, SQL, Kafka, GCP, C#, .net, MSSQL, WPF
1w
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Lead Technical Consultant - ITAM (HAM/SAM)
Denver, Colorado, United States
OnsiteFull Time
RGP
RGPNasdaq: RGP: Provides specialized consulting and on-demand talent for business transformation.
4+ YOE4+ years ServiceNow implementation experience, 8+ years technical delivery experience, technical leadership, proficiency with JavaScript/modern web stack, Agile delivery, and ServiceNow certifications.
ServiceNow, Java, C#, C++, JavaScript, Angular.JS, JQuery, Bootstrap.JS, React, NodeJS, NPM
2mo
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Software Engineer III
Centennial or Louisville
$130k-$178k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
5+ YOERequires bachelor’s degree and 5+ years experience; proficient in multiple languages; able to mentor; U.S. security clearance required.
Git, GitHub, GitLab, Bitbucket, Docker, Kubernetes, Helm, ArgoCD, Python, React, FastAPI, AWS, JIRA, Confluence, Bash, PowerShell, Ansible, MySQL, PostgreSQL, MongoDB
3mo
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Senior Software Engineer (Channels)
Atlanta or Austin or Boston or Chicago or Denver or New York or San Francisco
$134k-$212k/yr HybridFull Time
Iterable
Iterable: AI-powered customer engagement and cross-channel marketing automation platform.
Experience building production-ready, scalable web apps; proficiency in Scala and/or Java; familiarity with Elasticsearch, Postgres; strong collaboration and learning mindset.
Scala, Elasticsearch, Postgres, Redis, Pulsar, Kafka, AWS, Docker, Kubernetes, React
3d
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Senior Software Engineer, Trust & Safety
Austin or Denver or Indianapolis or Los Angeles or San Francisco or New York City or Salt Lake City or Minneapolis or Seattle or Nashville
$170k-$190k/yr RemoteFull Time
Givebutter
Givebutter: Fundraising and CRM platform for nonprofit organizations.
6+ YOE6+ years software engineering experience in fraud/trust & safety or adjacent domains; strong backend fundamentals, event-driven systems, stakeholder partnership, production debugging, and mentorship; payments and Stripe familiarity preferred.
PHP, Laravel, Ruby on Rails, Django, React, TypeScript, Stripe, Kafka, CDC, AWS, EKS, Kubernetes, RDS
3d
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Senior Front-End Engineer
Longmont, Colorado, United States
$145k-$165k/yr HybridFull Time
Resource Label Group
Resource Label Group: Manufactures custom labels and innovative packaging products.
5+ YOE5+ years front-end experience with ownership-level responsibilities; deep React, TypeScript, Node.js, Next.js, CI/CD, performance, accessibility, and analytics experience; AI-fluent and strong mentorship skills.
React, TypeScript, Node.js, Tailwind, AWS Amplify, Vercel, Next.js, Amplitude, Segment, GA4, GitHub, GraphQL, Claude Code, Copilot, Cursor
1w
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Senior Software Engineer- Full Stack
Centennial, Colorado, United States
$111k-$160k/yr HybridFull Time
Daxko
Daxko: Software solutions for managing fitness and community centers.
7+ YOE7+ years full-stack software engineering experience with Java/Spring Boot, React/TypeScript, deep SQL Server expertise, testing discipline, and legacy-system migration experience.
Java, Spring Boot, pnpm, React, TypeScript, Vite, MUI, TanStack Query, Zod, ColdFusion, Docker, GitLab CI, AWS, S3, DynamoDB, KMS, Kubernetes, JUnit, WireMock, Vitest, Playwright, Selenium, SQL Server, Flyway, OpenAPI, RabbitMQ, Kafka
2w
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Senior Software Engineer, Fleet & Planning
Atlanta or Boston or Chicago or Denver or Los Angeles or New York City or San Francisco or Austin or United States
$160k-$190k/yr RemoteFull Time
Flock Safety
Flock Safety: Sells AI-powered cameras and software for public safety surveillance.
Senior software engineer experienced with Typescript/Node, modern web frameworks (React), SQL, Docker, Helm, Kubernetes, and AWS; builds geospatial routing, automated permitting, and customer dashboards; CJIS eligibility required.
Typescript, Node, React, Vue, Angular, SQL, Docker, Helm, Kubernetes, AWS, S3, API Gateway, SQS, Claude, Copilot, Codex
2w
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Senior Software Engineer
Denver, Colorado, United States
$130k-$150k/yr HybridFull Time
OrthoFi
OrthoFi: Software for orthodontic practice operations and patient financing.
10+ YOE10+ years software development experience, 4+ years in senior roles. Strong .NET Core/.NET Framework, React/Angular, SQL Server, AWS, CI/CD experience; Bachelor's in STEM required; experience with AI coding tools preferred.
.NET Core, .NET Framework, React, Angular, SQL Server, AWS, CI/CD, Terraform, Datadog, GraphQL, ElasticSearch, Claude, GitHub Copilot, Cursor, Playwright, Model Context Protocols (MCP)
1mo
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Senior Software Engineer
Boulder or Austin
$140k-$185k/yr HybridFull Time
Atom Computing: Building scalable quantum computers using arrays of neutral atoms.
5+ YOEBachelor's degree in CS/CE or related, 5+ years software engineering experience, proficiency with Python and SQL, Linux and Git experience, familiarity with automated testing and CI/CD practices, willingness to learn atomic/quantum concepts.
Python, Rust, TypeScript, React, SQL, Linux, Git, Terraform, Azure, AWS, GCP, C++
3w
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Senior Software Engineer
Denver or United States
$120k-$160k/yr HybridFull Time
DHI Group
DHI GroupNYSE: DHX: Operates specialized career marketplaces and talent acquisition software platforms.
Experience building production-grade applications with Node.js and TypeScript, REST/GraphQL services, React/Next.js, AWS and container deployments; automated testing and AI-native workflows; senior technical leadership and mentoring.
Node.js, TypeScript, RESTful, GraphQL, React, Next.js, AWS, Docker, Fargate, Kubernetes, Playwright, LiteLLM, Python, Java, PostgreSQL, SNS, SQS, Lambda
1mo
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Senior Software Engineer, Growth & Platform
Denver, Colorado, United States
$184k-$223k/yr HybridFull Time
Cubby Beds
Cubby Beds: Manufactures smart sensory beds for children with special needs.
5+ YOE5-10 years shipping production systems; experience integrating multiple SaaS/data flows in regulated environments; strong data pipelines and warehouse skills (SQL, Python, dbt, ELT); frontend and backend capabilities; AI tooling expertise; based in or willing to relocate to Denver.
SQL, Python, dbt, ELT, TypeScript, React, GitHub, CI/CD
1mo
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Senior Software Engineer (Full-Stack)
Denver, Colorado, United States
$160k-$210k/yr OnsiteFull Time
Cobalt AI
Cobalt AI: Provides autonomous indoor security robots and remote AI monitoring.
5+ YOE5+ years software engineering experience with frontend depth; strong React and TypeScript skills; experience with canvas/2D rendering, WebRTC, data visualization; backend fluency in Python/Django, GraphQL, and PostgreSQL; AWS and container experience; testing and observability; participate in on-call rotations.
React, TypeScript, Django, Python, GraphQL, PostgreSQL, WebRTC, Storybook, AWS, WebSocket
3w
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Senior Software Engineer, Design Services
Denver or United States
$150k-$185k/yr HybridFull Time
Havenly
Havenly: Online interior design and home furnishing retail platform.
Strong full‑stack fundamentals, experience owning production systems, comfortable with ambiguity, able to use AI tools in engineering workflow; native iOS/3D/AI experience is a plus.
Claude Code, Codex, Cursor, React, TypeScript, Swift, PHP, Node, GraphQL, Python, Lunes, AWS, Terraform, Docker