React Developer Jobs in Slatington, PA, US

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Lead Developer

Allentown or Louisville or Providence

HybridFull Time

PPL CorporationNYSE: PPL: Provides electricity and natural gas to US utility customers.

5+ YOELead Developer with 5+ years experience; proficient in C#, JavaScript/TypeScript, frontend frameworks (Angular/React), SQL; experience with APIs and microservices; hybrid role in Allentown/ Louisville/ Providence.

C#, Java, TypeScript, Angular, React, SQL, Microservices, Cloud, APIs

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Software Engineer

Center Valley, Pennsylvania, United States

OnsiteFull Time

Shift4NYSE: FOUR: Provides integrated payment processing and point-of-sale solutions for merchants.

3+ YOEMid-level frontend/backend developer with 3+ years experience in JavaScript/React/TypeScript, Node.js, NextJS; solid CI/CD, testing, and code review skills.

JavaScript, React, CSS, HTML, Node.js, NextJS, Typescript, Git, Tailwind CSS, Mocha, Xunit

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Fullstack Software Engineer Staff - FULL TIME REMOTE

Colorado Springs or Helendale or Huntsville or King of Prussia or Littleton

$114k-$201k/yr RemoteFull Time

Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.

8+ YOE8+ years software development; React/Angular, TypeScript/JavaScript, C++/Qt or C#, CI/CD; SAFe/Agile; remote work experience.

React, Angular, TypeScript, JavaScript, C++, Qt, C#, HTML, CSS, Redux, NgRx, WebGL, Three.js, CI/CD, GitLab CI, Jenkins, Azure DevOps, Kafka, MQTT, AWS, REST, GraphQL

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Senior Software Engineer - Full Stack

New York or Holmdel or Bethlehem

$95k-$156k/yr HybridFull Time

Guardian Life: Provides life, disability, dental, and vision insurance products.

6+ YOE6-8 years software development; 3+ years cloud native/SOA (AWS); 2+ years IaC (Terraform); API development with Java/Spring Boot/Node/.NET/Python; web tech with React/Angular/Typescript; AWS, Docker, Kubernetes; databases MySQL/PostgreSQL/SQL Server; CI/CD tools; microservices; collaboration with stakeholders.

Java, Spring Boot, Node.js, DOTNET, Python, React, Angular, TypeScript, AWS, Docker, Kubernetes, MySQL, PostgreSQL, SQL Server, Terraform, GitHub, Jenkins, Artifactory, Microservices

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Full Stack Developer

Wilkes Barre or Conshohocken or Parsippany or Alpharetta

$78k-$180k/yr HybridFull Time

Berkshire Hathaway GUARD Insurance Companies: Provides property and casualty insurance products to small businesses.

5+ YOE5+ years in software development; 3+ years with C#/.NET; 3+ years with modern front-end frameworks; strong API, security, and Azure experience.

C#, NET, Azure, React, Angular, Vue.js, HTML, CSS, JavaScript, TypeScript, SQL, Git, OpenAPI

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2mo

Principal Software Developer

Pittston, Pennsylvania, United States

$120k-$155k/yr HybridFull Time

Berkshire Hathaway Direct Insurance CompanyNYSE: BRK.B: Provides direct commercial insurance for small business owners.

10+ YOE10+ years of software development experience in C#/.NET; senior technical role; RESTful APIs; cloud services (Azure); monolith and microservices; CI/CD; strong communication.

C#, .NET, Azure, REST APIs, CI/CD, TypeScript, Angular, React

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Staff Software Engineer- Python

Oaks, Pennsylvania, United States

OnsiteFull Time

RevSpring: Provides patient engagement and payment solutions for healthcare providers.

8+ YOE8+ years OOP with Python; 8+ years SQL; 8+ years Git; Bachelor's; skilled in JS/TS/React/Node/Python; cloud (AWS/Azure/GCP); Docker; security basics.

JavaScript, TypeScript, React, Node, Python, Flask, AWS, Azure, GCP, Pulumi, Terraform, Docker, TCP/IP

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1mo

Sr Software Developer

Philadelphia or Wayne

RemoteFull Time

RadianNYSE: RDN: Provides mortgage insurance and real estate risk management services.

5+ YOEBachelor's degree in CS or related field and 5 years of .NET web development with C#, EF, ASP.NET; experience with SQL Server/Oracle, REST/SOAP, XML/JSON; CI/CD, logging, security tools, Agile; strong problem solving and collaboration.

C#, Entity Framework, ASP.NET, Bootstrap, React, SQL Server, Oracle, REST, SOAP, XML, JSON, Log4Net, Serilog, New Relic, Splunk, Snyk, Veracode, Jenkins, Copado, Git, IIS, Jira, Rally, Visual Studio, VS Code, Active Reports, NUnit, MSTest, Qualtrics, Google Analytics, BizTalk, Boomi, SharePoint

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2mo

Forward Deployed Software Engineer (FDE)- Python

Chicago or Webster or Allentown or St. Petersburg or High Point or West Palm Beach or Irving or Tempe or Phoenix

$134k-$210k/yr HybridFull Time

PaychexNASDAQ: PAYX: Provider of integrated payroll, HR, and benefits outsourcing solutions.

7+ YOEBachelor's in computer field or equivalent; 7+ years experience; strong Python/Django, React, AWS; embedded systems; API design; customer-facing engineering; excellent communication.

Python, Django, React, AWS

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Principal Software Engineer

Dresher or Philadelphia

OnsiteFull Time

Ascensus: Administers tax-advantaged retirement and education savings plans.

Bachelor's degree in computer science or engineering; strong technical leadership; AI tooling experience; hands-on software development; Agile experience; excellent problem-solving and communication skills.

C, C++, Python, Apache, Nginx, Redis, jQuery, PowerShell, React, Docker, Kubernetes, CI/CD, TDD, Agile

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Senior SharePoint Developer (King of Prussia, PA, US, 19406)

King of Prussia, Pennsylvania, United States

$101k-$164k/yr OnsiteFull Time

Day & Zimmermann: Provides industrial, defense, and workforce solutions to global customers.

8+ YOE8+ years in SharePoint development; BA/BS required; design, develop, deploy SharePoint/M365 solutions; on-prem and cloud; mentor junior staff.

SharePoint 2016, SharePoint Subscription Edition, SharePoint Online, SPFx, C#, NET, JavaScript, TypeScript, React, HTML5, CSS3, PowerShell, Power Platform, Power Automate, Power Apps, Power BI, Microsoft Graph API, REST APIs, CSOM, GitHub

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2mo

Engineer Lead

Newtown, Pennsylvania, United States

$126k-$135k/yr RemoteFull Time

Law School Admission Council: Administers the LSAT and facilitates law school admissions processes.

5+ YOELead engineer with Generative AI experience; strong agile leadership; full-stack expertise; AI enablement and GitHub Copilot governance; Azure/OpenAI knowledge; RAG and responsible AI practices.

Git, GitHub Copilot, Azure DevOps, Azure, OpenAI APIs, LangChain, Semantic Kernel, Pinecone, Chroma, pgvector, React, C# .NET, SQL, Oracle, Cosmos DB

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Sr Quality Engineer

King of Prussia, Pennsylvania, United States

OnsiteFull Time

FiservNew York Stock Exchange: FI: Provides financial technology and payment processing services to institutions.

5+ YOE5+ years automated testing of web apps; Proficient in Python, JavaScript, or TypeScript; Playwright or Selenium; Cucumber; CI/CD with Jenkins or GitLab; API testing with Postman; strong problem-solving and communication in Agile

Playwright, Selenium, Cucumber, SQL, NoSQL, Locust, Jenkins, GitLab, Postman, Confluence, Prometheus, Grafana, Python, JavaScript, TypeScript, React, Flutter

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1mo

Lead, Software Engineer - Salesforce

Newark or Portland or Fort Washington or Washington Street, Newark

$134k-$220k/yr OnsiteFull Time

Prudential FinancialNYSE: PRU: Provides insurance, investment management, and retirement services globally.

Lead Software Engineer - Salesforce with strong DevOps, security, and Salesforce expertise; proficient in Python/Java/JS; agile, collaborative leader.

Salesforce, Python, Java, JavaScript, React, Spring Boot, Node.js

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2mo

Staff AI/ML Engineer (Large Language Model) (TS/SCI) {S}

King of Prussia, Pennsylvania, United States

OnsiteFull Time

ARKA Group: Provides advanced space technology and optical systems for national security.

8+ YOELead multidisciplinary AI/ML efforts; 8+ years in software/data roles with LLM experience; TS/SCI clearance; strong Python and ML libraries; experience with LLM deployment and RAG.

Python, NumPy, Pandas, Polars, scikit-learn, Git, GitLab, Bitbucket, Weaviate, Pinecone, pgvector, LangChain, DSPy, Microsoft Agent Framework, AWS, llama.cpp, vllm, tgi, ReAct

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Advanced Software Engr

Fort Washington, Pennsylvania, United States

OnsiteFull Time

HoneywellNASDAQ: HON: Manufactures aerospace products, building technologies, and industrial control systems.

5+ YOE5+ years software engineering; AI/data-driven integration; strong in C++, C#, Java, Python, or HTML/React; experience with Docker and Kubernetes.

Docker, Kubernetes, C++, C#, Java, Python, HTML, React

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Staff AI/ML Engineer (Large Language Model) (TS/SCI) {S}

King Of Prussia, Pennsylvania, United States

OnsiteFull Time

ARKA: Develops advanced optical systems and space-based sensing technologies.

8+ YOE8+ years in software or data science; strong Python; LLM experience; TS/SCI clearance.

Python, NumPy, Pandas, Polars, scikit-learn, Git, GitLab, Bitbucket, LangChain, DSPy, Weaviate, Pinecone, OpenAI, Bedrock, llama.cpp, vllm, ReAct, PEFT, CUDA, CuPy, Numba, CuSignal, CuDF, AWS, EC2, S3, Lambda

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Associate Principal Consultant

North Wales, Pennsylvania, United States

OnsiteFull Time

Jade Global: Provides IT consulting and enterprise software implementation services.

4+ YOEBachelor’s degree plus 4 years of experience in development and architecture; strong .NET, Azure, frontend frameworks, and cloud integration skills.

.NET, Azure, React, Next.js, Angular, HTML, CSS, JavaScript, TypeScript, jQuery, Entity Framework, REST APIs, SQL Server, MySQL, MongoDB, Salesforce APIs, Git, CI/CD, SSRS, SSIS