Top Java Developer Jobs in Philadelphia, PA

Backend developer role building services using statically typed languages (Scala, Java 8). Work includes REST APIs, dependency injection, scalable distributed systems, and using Git and CI/CD pipelines. Contract role with relocation and benefits.

Develop, test, and maintain a complex distributed processing application using Python and Java. Collaborate with product owners, data coaches, analysts, DBAs, and Agile teams to meet backend/frontend requirements. Work with distributed workloads (Spark/Hadoop), SQL/Snowflake, AWS, shell scripting, and job scheduling/process automation. Support delivery under Agile/SAFe practices and ensure alignment with program standards.

Design, develop, and maintain web-based UI and REST middleware for federal health IT systems. Participate in Agile/SAFe ceremonies, write design documents, implement features, resolve bugs, and support CI/CD pipelines while collaborating with product, QA, and stakeholders.

Lead backend architecture and implementation for Java Spring microservices, validate and own AI-assisted code, mentor engineers, collaborate with product to deliver features, and drive technical excellence and scalable, test-covered systems.

Design, build, and support cloud-native full stack or backend Java products using TDD, CI/CD, microservices and event-driven patterns. Collaborate with product teams, provide production support, implement monitoring and ensure secure, performant systems.

Contract Java Developer to perform Java development (2–5 years), testing and test-data creation/management, data conversion and file migration, report generation, SQL query work, and use IBM RAD. Requires a BA/BS in IT.

Design, develop, and implement web-based Java applications and RESTful services using Java and Python. Build services on Hadoop data environments, create design documents, perform coding, testing, debugging, and help scale prototypes to production. Support a recommendation system for sales associates and address security/authentication concerns.

Develop and maintain high-performance Android applications, design new features, troubleshoot code, and work with REST/Web Services in a multi-threaded environment.

The Backend Engineer will develop cloud-native applications, engage in full life-cycle development, and work with various technologies including Java/Kotlin and AWS in a remote environment.

Design, build, and maintain scalable J2EE business applications. Implement features, fix bugs, participate in code reviews, automate tests, optimize performance, and produce documentation.

Lead backend Java development and architecture for enterprise applications. Design and deliver scalable, resilient microservices and APIs, mentor developers, lead technical decisions, support production incidents, and implement CI/CD and cloud-native solutions on AWS.

Design, develop, and maintain Java-based backend services and APIs for KeeperApp. Own backend components, optimize MySQL schemas/queries, ensure performance and reliability, apply secure coding practices, participate in code reviews, and collaborate with product and engineering teams to deliver features iteratively.

Design, develop, and implement web-based Java applications following SDLC. Create design documents, perform coding, testing, debugging, and collaborate with operations and QA to ensure successful releases. Required to use Scala/Akka/Play, Java, Spring MVC, Cassandra and related technologies. Contract role; interviews via phone and Skype.

Design, develop, and implement web-based Java applications following SDLC. Create design documents, code, and test features; debug and resolve technical issues; collaborate with operations and QA to deliver releases in an agile environment.

Architect and design n-tier Java EE web applications, translate functional requirements into technical designs, lead and mentor developers, implement development best practices (TDD, CI), work with stakeholders, and oversee delivery for high-quality deployments.

Contractor will build web services and REST APIs on Hadoop data environments to create a recommendation system for sales associates. Role focuses on backend development using Java, Python, J2EE and Spring.

Build web services and a recommendation system using Hadoop data environments. Develop Java/J2EE applications with Spring, implement RESTful services, and apply Python for data-related tasks to support sales associate recommendations.

Develop the VOD DataMart to provide end-to-end visibility into VOD ingest workflows and reporting. Implement Java Spring Boot services with Spring Security, RESTful APIs and an AngularJS front end to surface asset status, errors, and triage information for internal teams and partners.

Technical lead to migrate legacy Java services to a microservices architecture using Spring Boot and Pivotal Cloud Foundry. Implement microservices, ensure code quality with SonarQube, work in Agile/Scrum, and use GoCD for continuous delivery. Requires 5+ years Java experience and at least one full lifecycle Spring Boot engagement.

Enhance and support a cloud-based in-memory Data Grid platform and microservices for resiliency and stability initiatives. Develop Java-based services using Spring, Hibernate/JPA, REST/SOAP, NoSQL and relational databases, and work with AWS, CI tools, and source control.

Develop and maintain Java/J2EE applications with UI built using AngularJS/JavaScript. Implement and troubleshoot VoIP/SIP solutions, participate in SDLC and project lifecycle activities, perform design and architecture reviews, collaborate with global teams, and work within networking and cable domain. May require occasional travel.

Design, build, and maintain scalable enterprise full-stack applications using Java, Spring Boot, microservices, and modern front-end frameworks. Implement cloud-based solutions on AWS, contribute to CI/CD and DevOps automation, optimize performance and security, and integrate AI-driven capabilities using Python and orchestration tools like LangChain and LangGraph.

The Software Engineer III will design, develop, and maintain Java EE applications, collaborating with teams, conducting testing, and supporting deployment in a fast-paced environment.

Analyze legacy TIBCO BusinessWorks/MFT processes to extract business logic, design and build a decoupled Java/Spring Boot microservices platform, migrate protocols to Kafka/RabbitMQ/REST, translate XML-heavy transformations to modern formats, and validate performance and SLAs to match legacy throughput.

Reverse-engineer TIBCO BW/MFT processes to extract business logic, then design and implement a modular Java/Spring Boot microservices replacement. Migrate protocols to Kafka/RabbitMQ/REST, translate XML transformations, ensure data persistence and consistency, and validate performance to meet existing SLAs.