78 reactjs jobs at 30 companies in Lancaster, PA

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
2mo
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Front End/Angular 2+/Full Stack Java Developer
Hanover, Maryland, United States
OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
1+ YOE1+ years of related experience in Java and web development (Angular 2+/ReactJS), OO Java (1.8+), Spring/Spring Boot, MongoDB or relational databases; US citizenship; Top Secret SCI + Polygraph clearance required.
Angular, Java, Spring, Spring Boot, MongoDB, ReactJS, Web Development
2mo
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Full Stack Software Engineer
King of Prussia, Pennsylvania, United States
$90k-$190k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOE5+ years in OO languages with Python; 2+ years in JavaScript/TypeScript; TS/SCI with Poly; BS in CS; full SDLC; cloud, APIs; in-office.
Python, JavaScript, TypeScript, RESTful APIs, AWS, Azure, Kubernetes, React, Angular, Git, GitLab, Jira, Confluence
2mo
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Software Engineer, Product Owner (PO) - Top Secret Clearance
King of Prussia, Pennsylvania, United States
$114k-$227k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Active Top Secret security clearance (investigation within 5 years), US citizenship, software development experience (JavaScript/Node, C#, Java), Agile/Scrum and Jira/Version One/Confluence proficiency, GitLab pipelines, and experience working across teams; product owner or leadership experience preferred.
JavaScript, Node, C#, Java, Jira, Version One, Confluence, GitLab pipelines, Angular, React, Vue.js, Ember.js, MS SQL, Postgres, MySQL
3w
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Full Stack Java/Cloud Developer - Assistant Vice President
New Castle, Delaware, United States
$107k-$161k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
5+ YOE5+ years apps development experience with Java EE, Spring, SQL, JavaScript/React; familiarity with Azure/AWS, CI/CD, Git, Maven, Oracle; Bachelor's in CS or equivalent experience.
Java EE, SQL, Spring, JavaScript, Bootstrap, ReactJS, Azure, AWS, CI/CD, Git, Oracle, Maven
3mo
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Senior Software Engineer - Finance
Hummelstown, Pennsylvania, United States
OnsiteFull Time
Flagger Force
Flagger Force: Provides temporary traffic control and work zone safety services.
5+ YOE5-8 years software development with .NET; strong database, API, and security skills; finance domain knowledge.
C#, .NET Framework, .NET Core, MVC, WPF, React, SQL Server, PostgreSQL, APIs, Confluence
5d
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Contract Associate Development Engineer
Hunt Valley, Maryland, United States
$82k/yr OnsiteContract, Full Time
Sinclair
SinclairNASDAQ: SBGI: Operates television stations and produces news and sports programming
0.5+ YOEBachelor's in CS or equivalent experience, ~6 months application/web development, proficiency with JavaScript/Java/Node.js/React/Python/SQL/NoSQL, familiarity with CI/CD and cloud-native architectures.
JavaScript, Java, Express, Node.js, MySQL, MongoDB, Mongoose, Python, ReactJS, jQuery, HTML5, CSS, CI/CD, IAC, AWS, Databricks, Docker, Kubernetes, Terraform
3d
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Application Engineering Technical Lead - II
Malvern or Charlotte
HybridFull Time
Vanguard
Vanguard: Provides mutual funds, ETFs, and investment management services.
8+ YOE8+ years technology experience with 3+ years software development; strong AWS, cloud-native, microservices, and observability skills; Node.js/TypeScript/Java/Python experience; mentoring and architecture leadership.
CloudFront, S3, ECS, Fargate, IAM, Lambda, DynamoDB, SQS, SNS, Step Functions, Glue, Athena, CloudWatch, Node.js, TypeScript, JavaScript, Java, Spring Framework, Python, Angular, React, CSS, Jest, SQL, GitHub, Splunk, Honeycomb, Okta, GitHub Copilot, Claude Code
2w
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AI & Data Science Intern
Carlisle, Pennsylvania, United States
OnsiteFull Time, Internship
Carlisle Companies
Carlisle CompaniesNYSE: CSL: Manufacturer of energy-efficient building envelope products and roofing systems.
Pursuing a Master's or PhD in CS/DS/Engineering, strong Python and ML/CV skills, experience with FastAPI/Streamlit and libraries (pandas, scikit-learn, OpenCV, TensorFlow/PyTorch), familiarity with LLMs and agentic AI.
Python, pandas, scikit-learn, OpenCV, TensorFlow, PyTorch, FastAPI, Flask, Django, Streamlit, Reflex, React, LangChain, LlamaIndex, SEM
3mo
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Full Stack Manager of Software Engineering - Java, React and AWS
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE2+ Mgmt5+ years engineering experience; 2+ years leading technologists; strong Java, React, AWS; SQL/Oracle/PostgreSQL; cloud infrastructure tooling; CI/CD and security knowledge.
Java, Spring Boot, React, AWS, PostgreSQL, Oracle, Terraform, CloudFormation, CI/CD, SQL
1mo
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Lead .Net Platform Engineer (Payments Ingestion) - Senior Vice President
New Castle or Tampa
$156k-$234k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
Hands-on .Net engineering for high-throughput payment platforms, microservices, Kafka, Oracle/MongoDB, cloud-native (OpenShift/AWS), Kubernetes/Docker, CI/CD, Jenkins, and platform leadership; AI/ML integration and strong stakeholder communication.
.Net, React, Kafka, Oracle, Microsoft SQL, MongoDB, Spring MVC, Spring Boot, REST APIs, Jenkins, Gradle, Maven, Grafana, OpenShift, AWS, Kubernetes, Docker, GitHub Copilot, Gemini, LLMs, JVM, CI/CD, TDD, Python, Pinecone, Weaviate, LangChain, AutoGen, COBOL, Assembler, C++
2mo
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Lead Product Manager – Digital Instrumentation and Enablement
Wilmington, Delaware, United States
$110k-$165k/yr HybridFull Time
OneMain Financial
OneMain FinancialNYSE: OMF: Provides personal loans and credit cards to nonprime consumers.
8+ YOE8+ years of product management in digital analytics/instrumentation; experience defining event tracking and data governance; strong technical fluency with APIs and data flows; experience modernizing legacy data systems.
Adobe Analytics, Google Analytics, Snowflake, React, APIs
1w
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Associate Software Developer
West Chester, Pennsylvania, United States
HybridFull Time
Venerable
Venerable: Manages and optimizes legacy variable annuity business blocks.
1+ YOE1+ years professional experience in AI/ML and micro-service systems; proficiency with AWS services, Python, C#, ML libraries, and enterprise software development practices.
SageMaker, Lambda, EC2, S3, EFS, SNS, SQS, EventBridge, Kinesis, Aurora, DynamoDB, RDS Proxy, Glue, Athena, Redshift, AWS Step Functions, AWS CodePipeline, Python, TensorFlow, PyTorch, scikit-learn, C#, PowerShell, SQL, JavaScript, UML, Docker, Git, GitHub, Jenkins, Bamboo, TeamCity, SpecFlow, Cucumber, Protobufs, Thrift, Avro, JSON, ODBC, Kafka, Angular, React
3mo
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Director Quality Engineering - Digital Products
Reading, Pennsylvania, United States
OnsiteFull Time
Penske Truck Leasing: Provides commercial truck leasing, rental, and vehicle maintenance services.
10+ YOE3+ MgmtBachelor's in CS/SE or equivalent; 10+ years testing for enterprise/SaaS; 3+ years QA leadership; ISTQB/Six Sigma preferred; strong QA practices, Agile/DevOps; Selenium, Cucumber, Karate, LoadRunner, JMeter; Java/RESTful APIs/Angular/React/SQL; lead large testing projects.
Selenium, Cucumber, Karate, LoadRunner, JMeter, Java, RESTful APIs, Angular, React, HTML/CSS, SQL, Oracle, SQL Server, DB2, XML
1mo
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Agentic AI Software Engineer
King of Prussia, Pennsylvania, United States
$108k-$228k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
8+ YOEActive TS/SCI with Polygraph, Bachelor's in CS or related field, 8+ years software engineering experience (Python emphasized), experience with SDLC, microservices, REST APIs, git, CI/CD, Agile, agentic AI/LLMs, and cloud/Kubernetes tooling preferred.
Python, git, GitLab, GitHub, Bitbucket, CI/CD, Jira, Confluence, LLMs, Microsoft Agent Framework, LangGraph, CrewAI, AutoGen, Pydantic AI, MCP, A2A, Langfuse, MLflow, DSPy, AWS, Azure, Kubernetes, Helm, React, Angular, JavaScript, TypeScript
1mo
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Technology Consultant 2
Addison or Newark or Pennington or Plano or Delaware or New Jersey or Texas or United States
$76k-$120k/yr OnsiteFull Time
Infosys
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Bachelor's or equivalent (or progressive experience), strong hands-on Core Java and React, proficiency with Spring Boot, Python, PL/SQL, Agile experience, generative/agentic AI familiarity, SDLC and testing experience, strong communication.
Core Java, React JS, Spring Boot, Python, PL/SQL, Reactive Programming, Generative AI, Agentic AI
2mo
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Computer Scientist (Job #718)
Aberdeen, Maryland, United States
OnsiteFull Time
Defense Acquisition Support Services
Defense Acquisition Support Services: Provides systems engineering and technical assistance to defense agencies.
8+ YOEActive DoD security clearance, Bachelors in CS/CE/Data Science, 8+ years experience, prior military or DoD program experience, DevSecOps familiarity, strong software development and integration skills.
React, React Native, HTML, JavaScript, TypeScript, eCharts, D3, PowerBI, Python, FastAPI, SQL, SQLite, Vantage, Foundry
1w
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Frontend Developer
Malvern, Pennsylvania, United States
$110k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
10+ YOE10+ years frontend experience with React, JavaScript/TypeScript, HTML5, CSS3, GitHub, CI/CD, and automated testing (Playwright). Bachelor's in Computer Science required.
React, JavaScript, TypeScript, ES5, ES6, HTML5, CSS3, GitHub, CI/CD, Playwright
2w
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Technical Lead - UI Porta& MFE Enablement | Onsite - Delaware
Wilmington, Delaware, United States
$56k-$196k/yr OnsiteFull Time
Photon: A hiring organization focused on delivering large-scale UI and frontend engineering solutions.
8+ YOE3+ Mgmt8+ years front-end engineering with 3+ years as a tech lead; expert React, Node.js/TypeScript, Webpack/Module Federation, state management, accessibility (WCAG/ARIA), OAuth/OIDC, UI performance and containerized deployments.
React, Node.js, TypeScript, Webpack, Module Federation, Redux, Figma, OAuth, OIDC, Playwright, Sentry, Datadog RUM, WCAG, OWASP
1mo
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SENIOR SOFTWARE DEVELOPER/ENGINEER (CLOUD/CYBER)
Huntsville or Aberdeen or Colorado Springs or Crestview or Tupelo
OnsiteFull Time
Sentry Construction
Sentry Construction: Provides general contracting and comprehensive property maintenance services.
7+ YOEBS in CS/Software Eng or equivalent, 7+ years software development experience, DoD Top Secret/SCI eligibility, experience with Python, containers, AI/LLMs, databases, Linux, AWS, and Agile/Scrum.
LLMs, Ollama, LM Studio, Python, C#, Go Lang, React, JavaScript, HTML, CSS, Git, Docker, Bash, TensorFlow, PyTorch, SQL, MongoDB, PostgreSQL, Redis, Linux, AWS, RESTful API, Agile/Scrum
3mo
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Software Engineer
Atlanta or Denver or New York or Albany or Baltimore or Boston or Greenville or Charleston or Columbia or Winston-Salem or Greensboro or Raleigh or Charlotte or Durham or Charlottesville or Mc Lean or Houston or Huntsville or San Francisco or Walnut Creek or Irvine or San Diego or Glendale or Sunnyvale or Reno or Las Vegas or Nashville or Tucson or Phoenix or Washington or Wilmington
$72k-$121k/yr RemoteFull Time
Womble Bond Dickinson
Womble Bond Dickinson: Transatlantic law firm providing comprehensive legal services to businesses.
5+ YOE5+ years data engineering with Microsoft stack; strong C#/.NET, Blazor/React/TypeScript, SQL Server/T-SQL; experience with Azure, Microsoft Fabric, Azure Data Factory, Synapse, Boomi; production AI/RAG/agent experience; Bachelor's in CS or equivalent.
C#, .NET, Blazor, React, TypeScript, Microsoft Power Platform, Microsoft Power Apps, Microsoft Power Automate, Microsoft Dataverse, Azure Data Factory, Microsoft Fabric, Delta Lake, Dataflow Gen2, Azure SQL, SQL Server, T-SQL, SSRS, SSAS, Boomi, Azure AI Foundry, Microsoft Agent Framework, Copilot Studio, Microsoft Copilot, Microsoft Teams, Microsoft Office add-ins, Git, Azure DevOps, Synapse