ReactJS Java API Software Engineer
At a glance
Mid-level Software Engineering role at RELX. Philadelphia · full-time · $78,800–$131,300 base.
techroles summary, based on the employer's posting.
What you'll do
- Build and maintain ReactJS web applications, keeping them responsive and reliable
- Develop REST APIs and backend services in Java, using Microsoft SQL Server and IIS
- Create and tune SQL queries, stored procedures and database schemas for performance and data integrity
- Turn business needs into technical solutions and document software components of moderate complexity
- Coordinate with product, QA, UX, DevOps and technology partners to deliver software
What you bring
- Current hands-on proficiency building with ReactJS
- Current proficiency developing APIs with Java Spring Boot
- You can learn unfamiliar languages and technologies quickly and work effectively with internal and external technical partners
- You understand software development approaches such as Agile or Waterfall
Who this fits
This mid-level role suits a software engineer who can contribute across ReactJS, Java APIs and SQL Server work. You’ll collaborate with product, QA, UX, DevOps and technology partners as part of an agile delivery process. The role is based in Philadelphia.
From the employer
Are you a collaborative ReactJS and Java API Developer looking to work for a mission driven global organization?
About the role, we are looking for a collaborative ReactJS and Java API software developer to be a critical component within our agile delivery process for Software Development.
About the team, this team builds evidence-based oncology pathways — structured treatment recommendations for cancer care based on the latest clinical evidence and expert consensus.
They drive integration with clinical workflows, often embedded in electronic health records (EHRs) so oncologists can access guidance at the point of care.
Requirements
· Possess current proficiency in ReactJS development
· Possess current proficiency in Java Spring Boot API development
· Ability to quickly pick up new languages and technologies
· Ability to work well with internal and external technology resources
· Ability to write and review portions of detailed specifications for the development of system components of moderate complexity
· Knowledge of software development methodologies (e.g., Agile, Waterfall)
· Ability to write and review portions of detailed specifications for the development of system components of moderate complexity
Responsibilities
· Designing, developing, and maintaining scalable web applications using ReactJS
· Building and optimizing RESTful Java APIs and backend services leveraging Microsoft SQL Server and IIS
· Contributing to full-stack development, ensuring high performance, responsiveness, and reliability across applications
· Writing clean, maintainable, and well-documented code following established coding standards
· Translating business requirements into functional and technical solutions
· Designing, developing, and optimizing SQL queries, stored procedures, and database schemas in Microsoft SQL Server. Ensure data integrity, performance tuning, and scalability of database-driven applications
· Collaborating with product managers, QA, UX, DevOps, and other engineering teams to deliver high-quality solutions. Work effectively with internal and external technology partners, including vendors and third-party service providers
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U.S. National Base Pay Range: $78,800 - $131,300. Geographic differentials may apply in some locations to better reflect local market rates.



This job is eligible for an annual incentive bonus.





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