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37 python react jobs at 20 companies in Lancaster, PA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
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
Help us #BeatIndeed & #BeatLinkedIn
3d
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Lead Software Engineer - Python/React/AWS/AI
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience with system design, application development, SDLC, CI/CD, cloud-native systems, and applied AI-assisted development; strong Python, Java, React, and AWS skills.
Python, Java, React, AWS, AI
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4d
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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
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3w
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Senior AI Engineer
United States or Wilmington
$126k-$197k/yr RemoteFull Time
Chemours
ChemoursNYSE: CC: Manufactures specialty chemicals, refrigerants, and high-performance industrial fluoropolymers.
8+ YOEDegree in Computer Science/Engineering, 8+ years backend development with Python and JavaScript, 2+ years production GenAI systems experience, React/TypeScript UI skills, Pydantic proficiency, strong stakeholder communication.
Python, JavaScript, React.js, TypeScript, HTML, Pydantic, PyTorch, Azure, Azure Kubernetes, Office 365, GitHub
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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
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3w
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Data Engineer - Level 4
King of Prussia or Littleton or Sunnyvale or Titusville
$114k-$201k/yr RemoteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
5+ YOEBachelor's in CS/IT or related, 5+ years data engineering experience, US citizenship, proficiency with Python, MS SQL, JavaScript/React, NodeJS, GitLab/CICD, Docker/OpenShift, EMR and full-stack data pipeline design.
Python, MS SQL, JavaScript, HTML, React, JSX, NodeJS, RESTful APIs, GitLab, Docker, Harbor, OpenShift, LangChain, LangGraph, Ontologies, Graph Database
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1mo
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AI Solutions Architect
Kennett Square or Pennsylvania
HybridFull Time
Chatham Financial
Chatham Financial: An independent capital markets advisor delivering integrated advice and technology to help clients manage financial risk.
5+ YOEBachelor's in CS/IS/Engineering or equivalent, 5+ years in solutions/enterprise architecture, experience with Azure cloud services, Python, C#/.NET, TypeScript/React, OAuth2/OIDC, LLM integration patterns, CI/CD (GitHub Actions), and strong communication.
Onyx, Python, FastAPI, Azure, App Service, Functions, Cosmos DB, Blob Storage, C#, .NET, PostgreSQL, TypeScript, React, OAuth 2.0, OpenID Connect (OIDC), GitHub Actions, CI/CD, large language model (LLM)
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1mo
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Customer Relationship Management (CRM) Lead
Harrisburg, Pennsylvania, United States
OnsiteContract
Data-Core Systems
Data-Core Systems: Provides IT consulting, software development, and business process services.
10+ YOE10+ years Microsoft CE and CRM implementation experience; 10 years developing with .NET, JavaScript, Python, React, SSIS, and Reporting Services; FastTrack solution architect experience; Azure AI/ML and Copilot experience; data migration and integrations expertise; team leadership and documentation skills.
SAP BRIM, Microsoft Dynamics CE, Microsoft CE, .NET, JavaScript, Python, React, SSIS, Reporting Services, Azure AI, Machine Learning, Copilot, Microsoft Dynamics CRM, Dynamics Contact Center, Microsoft ADO Testing Module, Power Apps, CoPilot Studio, Microsoft D365 CE
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1mo
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Infrastructure Engineering, AVP
Kilkenny or Dublin or London or Krakow or Quincy or Boston or Princeton or Clifton or Austin or Kansas City or Berwyn
$90k-$158k/yr HybridFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
7+ YOESenior-level full-stack developer with strong Python (7+ yrs) and network engineering/automation (5+ yrs) experience; database integration, RESTful APIs, JSON/XML, Django and frontend (HTML/CSS/JavaScript/React) familiarity; Agile/Scrum experience; bachelor's degree preferred.
Python, Django, JSON, XML, HTML, Bootstrap, CSS, JavaScript, React, RESTful API, Scrum, SDLC
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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
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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
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1w
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Associate, Financial Platform Engineer (Java) / Wilmington, DE
Wilmington, Delaware, United States
$115k-$145k/yr HybridFull Time
BlackRock
BlackRockNYSE: BLK: Provides investment management and financial technology services globally.
4+ YOEB.S./M.S. in STEM,4+ years enterprise software development; strong Java stack experience; knowledge of databases, cloud, distributed systems, Python and data libraries; agile experience.
Java, Spring, JDBC, Hibernate, JBoss, Maven, Jenkins, JUnit, Python, pandas, numpy, scipy, cvxpy, SQL, NoSQL, Oracle, Sybase, Snowflake, ETL, RESTful Webservices, HTTP-JSON, gRPC, Microsoft Azure, Apache Ignite, Hazelcast, Angular, React, Unix/Linux, Git, JIRA, ADO, Azure Pipelines, BlackRock Aladdin, OCI
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2d
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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
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1w
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Backend Software Developer
Wayne, Pennsylvania, United States
HybridFull Time
PowerPay
PowerPay: Digital lending platform for home improvement and healthcare loans.
Experience building backend services and APIs using Ruby/Rails, Python or NodeJS; familiarity with databases, integrations (SFTP/FTP, OAuth2, OIDC), security (TLS, SSH), Linux/Docker, testing and API tools.
Ruby, Ruby on Rails, Python, NodeJS, SFTP, FTP, OAuth2, OIDC, TLS, SSH, Postgresql, Mysql, MariaDB, rSpec, Postman, Linux, Docker, ReactJS, NewRelic, AWS, CI/CD
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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
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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
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1mo
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Software Engineer (Towson, MD, US)
Towson, Maryland, United States
$85k-$110k/yr OnsiteFull Time
Curio Wellness
Curio Wellness: Cultivates and manufactures scientifically developed medical cannabis products.
1+ YOE1–3 years experience in software/data/DevOps; working knowledge of Python and SQL; Git, CI/CD, and cloud (AWS preferred); experience with containers and orchestration; comfortable using AI-assisted coding tools.
Python, SQL, Git, CI/CD, AWS, Azure, GCP, Docker, ECS, Kubernetes, Terraform, CloudFormation, React, Vue, Angular, dbt, ClickHouse, Snowflake, Databricks, BigQuery, Copilot, Claude, Cursor, LLM
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1mo
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Agentic AI Software Engineer
King of Prussia or Aurora
$82k-$172k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEActive TS/SCI clearance, polygraphable, Bachelor’s in Computer Science or related, 5+ years software engineering with strong Python, experience with microservices, RESTful APIs, Git and CI/CD, LLMs/agent frameworks, and Agile practices.
Python, Git, GitLab, GitHub, Bitbucket, CI/CD, Jira, Confluence, microservices, RESTful APIs, LLMs, LangGraph, CrewAI, AutoGen, Pydantic AI, MCP, A2A, RAG, vector databases, Langfuse, MLflow, DSPy, AWS, Azure, Kubernetes, Helm, React, Angular, JavaScript, TypeScript
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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++
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5d
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Senior Full Stack Data Engineer
West Chester, Pennsylvania, United States
OnsiteFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
7+ YOEBachelor's preferred,5+ years full-stack/data engineering experience (7+ preferred),backend and frontend development,Power BI dashboards,API and microservices,Oracle/Mongo DB,Cloud Foundry,GitHub,ELK,Agile with Jira.
Power BI, Jira, Smartsheet, Java, Python, Node.js, React, Angular, Tailwind CSS, DotNet, REST, API Gateway, Mongo DB, Cloud Foundry, GitHub, GitHub Actions, ELK, Agentic AI, Open Spec SDD
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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
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