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620 api developer jobs at 262 companies in Pennsylvania

1mo
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API Developer
Pittsburgh or Cleveland or Dallas or Birmingham or Phoenix or Denver
OnsiteFull Time
CGI
CGITSX: GIB.A: Global IT consulting and business services firm.
8+ YOE8+ years Java/J2EE experience building RESTful APIs using Spring Boot and microservices; experience with DevOps, Kafka, IBM MQ, SQL/NoSQL and cloud platforms required.
Java, J2EE, Spring Boot, Microservices, REST API, Angular, XML, JSON, Swagger, Jenkins, uDeploy, GIT, Kafka, IBM MQ, SQL, No Sql, AWS, Azure, GitHub, CI/CD, React, JavaScript, HTML, CSS, JSON Web Token (JWT), UML, XPath
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Python API Developer
Malvern, Pennsylvania, United States
$110k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesBSE: 532540: Global leader in IT services, consulting, and business solutions.
10+ YOEDesign and maintain REST APIs with Python and AWS Lambda; integrate with Amazon Aurora and DynamoDB; manage DB migrations with Liquibase; 10+ years experience and Bachelors in Computer Science required.
Python, Lambda, Aurora, DynamoDB, Liquidbase, CI/CD
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Backend API Engineer Technical Lead II
Charlotte or Malvern
HybridFull Time
Vanguard
Vanguard: Global investment management firm owned by its client funds.
8+ YOE8+ years related experience, 3+ years Node.js, proficient in TypeScript and NestJS, experience with AWS, CI/CD, GitHub Actions, REST/Spring Boot/Java a plus; undergraduate degree or equivalent; strong communication and mentoring skills.
Node.js, Typescript, NestJS, Visual Studio Code, RESTful Services, Spring Boot, Java, CI/CD Pipeline, Github Actions, Git/GitHub, JIRA, AWS ECS Fargate, AWS EKS, AWS Lambda, XCode, SWIFT, Android Studio
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2mo
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API & GCP Architect
Exton or Atlanta
OnsiteFull Time, Contract
SID Global Solutions
SID Global Solutions: AI-first IT services and digital transformation consultancy helping enterprises modernize applications, cloud infrastructure, data, and operations.
10+ YOEExpertise in Apigee (Edge/X/Hybrid), GCP, Java/Spring Boot, microservices, Docker/Kubernetes, API security (OAuth2.0, JWT, OIDC, mTLS); 10+ years software development and 5+ years Apigee experience preferred.
Apigee Edge, Apigee X, Apigee Hybrid, GCP, GKE, Cloud Run, Pub/Sub, Cloud Functions, Cloud Storage, IAM, Monitoring, Logging, REST APIs, JSON, XML, OpenAPI/Swagger, Java, Spring Boot, JavaScript, Python, Shell, Docker, Kubernetes, Terraform, Kafka, RabbitMQ, Prometheus, Grafana, Cloud Monitoring, Splunk, ELK, OAuth 2.0, JWT, OpenID Connect, mTLS
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Software Engineer Lead - Full Stack Java, API
Pittsburgh or Denver or Farmers Branch
$86k-$158k/yr OnsiteFull Time
PNC Financial Services Group
PNC Financial Services GroupNYSE: PNC: Diversified financial services providing banking and investment solutions.
3+ YOERequires 3+ years developing enterprise Java applications, Spring and microservices experience, API/REST development, JavaScript/Angular front-end work, Oracle familiarity, and leadership/mentoring skills.
Java, JavaScript, Spring, Microservices, RESTful APIs, Angular, Oracle, Agile
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2mo
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Senior Software Engineer – API & Cloud Integrations (Java, AWS)
Denver or Cedar Rapids or Philadelphia
$94k-$120k/yr HybridFull Time
Transamerica
Transamerica: Insurance, retirement, and investment solutions provider.
3+ YOEBachelor’s or equivalent experience; 3+ years Core Java; experience with Spring, microservices, APIs, databases (RDBMS/NoSQL), cloud (AWS/Azure), CI/CD, and integration frameworks; strong analytical and communication skills.
Java, Core Java, Spring Framework, Spring Boot, Spring MVC, J2EE, Entity Framework, IIS, Swagger, Swagger API, OData, .NET API 2, .NET API Core, AutoMapper, MS Cosmos DB, Microsoft Cosmos DB, Apache Cassandra, Amazon DynamoDB, AWS, Azure, EC2, ECS, S3, Kinesis, Microsoft VMs, Microsoft Blob, Microsoft Data Factory, Microsoft SQL Data Warehouse, Microsoft ARM Templates, Microsoft Event Hubs, Visual Studio, Git, Bitbucket, Maven, Jenkins, Nexus, SQL Management Studio, NUnit, Ajax, MS HPC, SageMaker, Spark, API Gateways, Apache Camel, Zookeeper, Kafka, Docker, OpenShift, Kubernetes, Angular, React, Vue.js, ASP.NET MVC, HTML, JS, CSS
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Director, API Foundations
Pennsylvania, United States
RemoteFull Time
Bentley Systems
Bentley SystemsNasdaq: BSY: Public infrastructure engineering software serving architects, engineers, constructors, and owner-operators with design, construction, and asset-operation tools.
15+ YOERequires 15+ years in software development, sustained global-team leadership, and experience developing APIs, libraries, platforms, or specifications. Strong communication and emotional intelligence required.
TypeScript, JavaScript, C++, SQL, MCP, AWS, Microsoft Azure
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Sr. Software Engineer II, Platform/API
Chicago or California or Colorado or Florida or Georgia or Illinois or Indiana or Minnesota or Missouri or Montana or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or South Carolina or Texas or Utah or Vermont or Virginia or Washington or Wisconsin or country_code
$140k-$190k/yr HybridFull Time
NinjaTrader
NinjaTrader: Privately held futures trading platform and brokerage serving retail and professional futures traders.
6+ YOE6+ years building and operating backend services; Node.js, TypeScript, SQL, Docker, Kubernetes, cloud, event-driven architecture, and workflow reliability expertise. Bachelor's or master's degree or equivalent experience.
Node.js, TypeScript, Kafka, Google Cloud Pub/Sub, SQL, Docker, Kubernetes, Google Cloud Platform, Codex, Cursor, Claude Code, Statsig
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2mo
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Senior Developer / Lead Developer
Allentown or Providence or Louisville
HybridFull Time
PPL Corporation
PPL CorporationNYSE: PPL: Energy utility holding providing electricity and natural gas.
5+ YOEBachelor's degree, 5+ years software development experience (senior) or 7+ (lead); proficiency in C#, Java, TypeScript, frontend frameworks, APIs and SQL; experience with cloud, microservices, and emerging tech.
C#, Java, TypeScript, JavaScript, Python, Angular, React, SQL, Microservices, Cloud Architecture, APIs, SAP ABAP, SAP S/4HANA, Kubernetes, Azure Kubernetes Service (AKS), DevOps, RPA, Artificial Intelligence
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2mo
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Lead Developer
Allentown or Louisville or Providence
HybridFull Time
PPL Corporation
PPL CorporationNYSE: PPL: Energy utility holding providing electricity and natural gas.
7+ YOEBachelor's degree (or equivalent), 7+ years experience (Lead) or 5+ years (Senior); strong software development background with C#, Java, JavaScript/TypeScript, front-end frameworks (Angular/React), APIs/JSON, and SQL; experience with microservices, cloud, containerization and Kubernetes preferred.
C#, Java, Python, JavaScript, TypeScript, Angular, React, SQL, JSON, APIs, Microservices, DevOps, Multi-Cloud, IoT, Intelligent Automation, RPA, Test automation, Machine Learning, Artificial Intelligence, Kubernetes, Azure Kubernetes Service (AKS), SAP ABAP
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Senior Applications Developer
Sunbury, Pennsylvania, United States
OnsiteFull Time
Weis Markets
Weis MarketsNYSE: WMK: Regional supermarket chain operating stores and pharmacies.
10+ YOEAssociate degree and minimum 10 years IT experience; strong API, database and application development skills; experience with .NET or JAVA; strong communication, documentation, and leadership abilities.
API frameworks, .NET, JAVA
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Application Developer I
Coppell or Fort Washington
OnsiteFull Time
Newrez
Newrez: National mortgage lender and loan servicer.
1+ YOE1-2+ years full-stack development experience with T-SQL, .NET/C#, JavaScript framework (Angular), APIs, JWT, MSSQL, SSMS; familiarity with SDLC/Agile and cloud platforms.
T-SQL, .NET Framework, C#, JavaScript, Angular, APIs, JWT Token Authentication, MSSQL, SSMS, JSON, XML, ASP.NET, C++, Microsoft Azure, Excel, SQL
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.Net Application Developer
Philadelphia, Pennsylvania, United States
$95k-$102k/yr OnsiteFull Time
PMHCC, Inc.
PMHCC, Inc.: Nonprofit human-services systems manager providing behavioral-health, housing, and administrative support for Philadelphia-area public programs.
3+ YOE3+ years .NET development experience; proficiency with C#, ASP.NET Core/MVC/Web API, Microsoft SQL Server, secure coding and HIPAA compliance; strong communication and problem-solving skills.
C#, ASP.NET Core, Razor Pages, MVC, Web API, HTML, CSS, JavaScript, Microsoft SQL Server, Git, Azure DevOps, Azure Boards, ASP.NET Core Identity, Azure AD (Entra ID), RESTful APIs
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6d
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Mulesoft Developer
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States
$54k-$196k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
3+ YOERequires 3+ years software development, 2+ years API development and Git/Agile/testing, 1+ year MuleSoft development, MuleSoft Developer Level 1, and a bachelor's degree or equivalent experience.
Anypoint Platform, Anypoint Studio, Mule Runtime, DataWeave, MUnit, Git, SOAP, REST, XML, JSON, YAML, Anypoint MQ, API Manager, Anypoint Exchange, CloudHub, Salesforce, SAP, Workday, Oracle Cloud Applications, ServiceNow, CI/CD, AWS, Azure, Flex Gateway, Model Context Protocol (MCP), GenAI, HL7, FHIR, Boomi, Informatica, SnapLogic, Workato
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Senior Java Developer
Pittsburgh, Pennsylvania, United States
OnsiteFull Time
Virtusa
Virtusa: Global provider of digital engineering and IT consulting services.
Experienced Java API developer skilled in backend services, API design, microservices, messaging (Kafka, IBM MQ), and SQL/NoSQL databases.
Core Java, Java 8, Java 11, RESTful API, Spring Boot, Spring Framework, Kafka, IBM MQ, SQL Databases, NoSQL Databases
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1d
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Generative AI Developer
White Plains or Conyers or Roanoke or Charleston or Maitland or Kingsport or Schaumburg or Lihue or Albany or Denver or Missoula or Virginia Beach or Livonia or Greenville or Richmond or Fort Lauderdale or Thomaston or Frederick or Hibbing or Miami or Appleton or Jackson or Kailua-Kona or Ridgeland or Kokomo or Irvine or Newport or Polson or Lexington or Mobile or Fort Myers or Medford or Wilmington or Bethesda or Chattanooga or Kalispell or Macon or Tampa or Overland Park or Columbia or West Palm Beach or Ashburn or Phoenix or San Antonio or Austin or Yakima or Madras or Portland or Helena or Tallahassee or Delafield or New York City or San Ramon or Southborough or Boston or San Francisco or Nashville or Fargo or Boise or Scottsdale or Spokane or Eugene or Newnan or Thomasville or Westlake or Melville or Tequesta or Canonsburg or Philadelphia or Chicago or Dublin or Jacksonville or Los Angeles or Carrollton or Atlanta or Norwalk or Southfield or Milwaukee or King of Prussia or Bismarck or San Diego or Troy or Chagrin Falls or Washington or Wenatchee or High Point or Bonita Springs or Fremont or Hardinsburg or Irving or Simi Valley or New Iberia or Walla Walla or Winston-Salem or Red Bank or Lafayette or Raleigh or Palm Beach or Golden Valley or Urbandale or Memphis or Cookeville or Vero Beach or Baton Rouge or Providence
$83k-$125k/yr RemoteFull Time
Marsh McLennan Agency
Marsh McLennan Agency: Marsh McLennan Agency is a wholly owned insurance brokerage serving middle-market businesses and individuals.
10+ YOERequires 10+ years of technology experience, Python, AI application and agentic system development, LLM platforms, RAG, vector databases, APIs, observability, and governance in production environments.
Python, LangChain, LangGraph, DSPy, Anthropic, OpenAI, GPT-4, Claude, Pinecone, Milvus, CI/CD, API, RAG
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2w
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Senior Software Developer
Philadelphia, Pennsylvania, United States
$49k-$68k/yr HybridFull Time
College of Education and Human Development
College of Education and Human Development: Public Temple University college preparing teachers, education leaders, psychologists and researchers for schools and communities.
2+ YOEBachelor's degree in computer science, software engineering, information systems, or related field and 2+ years' related experience. Requires cloud development, API integration, testing, documentation, AI applications, Python or JavaScript, and secure data handling.
Python, JavaScript, APIs, source control
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6d
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Mulesoft Developer
New York City 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
$54k-$196k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
3+ YOERequires 3+ years software development, 2+ years API development and Git/Agile/testing, 1+ year MuleSoft experience, MuleSoft Developer Level 1 certification, and a bachelor's degree or equivalent experience.
Anypoint Platform, Anypoint Studio, Mule Runtime, DataWeave, MUnit, Git, Java, XML, JSON, YAML, Anypoint MQ, API Manager, Anypoint Exchange, CloudHub, Salesforce, SAP, Workday, Oracle Cloud Applications, ServiceNow, AWS, Azure, Flex Gateway, Model Context Protocol (MCP), Boomi, Informatica, SnapLogic, Workato
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2w
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Web Application Developer
Harrisburg, Pennsylvania, United States
OnsiteFull Time
Ollie's Bargain Outlet
Ollie's Bargain OutletNASDAQ: OLLI: Retailer of brand name closeouts and excess inventory.
Proficiency in Java and Java EE, Java web applications, REST APIs, XML, JSON, SQL, cloud integrations, web design, and SDLC; experience with Claude or similar AI development tools required.
Java, Java EE, Claude, REST API, XML, JSON, SQL, MySQL, DB2, Snowflake, SDLC
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2mo
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Senior Software Engineer
Pittsburgh or Boston or Toronto or Montreal
HybridFull Time
Compliance Solutions Strategies
Compliance Solutions Strategies: Confluence is a private software providing regulatory reporting, portfolio analytics, and investor-communications solutions for investment managers.
Experience with C#, backend development, web front-ends (React), cloud platforms (Azure preferred, AWS considered), CI/CD/DevOps, API design, and collaboration with product and data stakeholders.
C#, React, Azure, AWS, WinForms, Citrix, CI/CD, DevOps, APIs, LLM, AI
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