Senior Software Engineer I

Elsevier Inc. Company; Philadelphia (Philadelphia County); On-site; USD 87,000 - 144,000; Full time

Benefits offered by this job

Annual incentive bonus

Country-specific benefits

Job summary

RELX is seeking a Senior Software Engineer I for the Search and AI Platform to drive architectural decisions and build reusable AI services. You will mentor engineers and raise engineering standards while delivering scalable backend systems in a Kubernetes environment.

Ideally you bring 4–6 years of software experience, strong Python/Java skills, and familiarity with LangChain and LangGraph in cloud-native architectures. You will collaborate across product and research teams in an Agile setting.

Qualifications

• 4-6 years of software engineering experience.
• Proven experience contributing to technical architecture for large-scale platforms or services.
• Solid understanding of software development methodologies and data modeling principles.
• Deep expertise in Python and Java.
• Proficiency in backend development and familiarity with modern AI/LLM tools and frameworks (e.g., LangChain, LangGraph).
• Experience with Kubernetes (EKS) and cloud-native architectures.
• Proven track record building scalable backend systems and APIs.
• Experience mentoring engineers and contributing to architectural decisions.
• Ability to work collaboratively across functions in an Agile or Kanban environment.

Responsibilities

• Leading architectural design and ensure technical consistency.
• Designing, developing, and maintain generative AI services and reusable components using mostly Python and a little bit Java.
• Defining and promote best practices in engineering, including scalability, observability, testing, and CI/CD.
• Contributing to system designs spanning multiple services and modules, aligning with architectural best practices.
• Collaborating with product, platform, and research teams to translate AI prototypes into production-ready capabilities.
• Working within a Kubernetes (EKS) environment to deploy scalable, containerized applications.
• Leading the resolution of complex technical challenges across distributed systems.
• Mentoring less-senior developers on engineering principles, GenAI patterns, and platform development.
• Participating in code reviews, architecture sessions, and cross-team initiatives to ensure quality and maintainability.
• Staying informed of the latest developments in generative AI and advocate for responsible integration into product ecosystems.

Skills

Python

Java

Backend development

Kubernetes

LangChain

LangGraph

APIs

Tools

LangChain

LangGraph

Job description

Senior Software Engineer I - Search and AI Platform

About the Team

Our team is dedicated to unlocking the rich knowledge embedded within Elsevier's content through our rich data platform; this empowers researchers, clinicians, and innovators worldwide to gain new insights, make informed decisions, and accelerate progress across research, healthcare, and life sciences. As part of this mission, the AI Platform team is focused on building reusable generative AI capabilities that can be embedded across products and platforms. We create scalable, secure, and production-ready AI services - enabling downstream teams to integrate cutting-edge GenAI features with confidence.

The Role

We are seeking a Senior Software Engineer I with a passion for generative AI and platform architecture. In this role, you will drive architectural decision and set engineering standard and implement robust systems to deliver reusable AI services and components, collaborating closely with cross-functional stakeholders to solve meaningful challenges. You will also contribute to mentor other engineers and help evolve our engineering practices.

Responsibilities

• Leading architectural design and ensure technical consistency.
• Designing, developing, and maintain generative AI services and reusable components using mostly Python and a little bit Java.
• Defining and promote best practices in engineering, including scalability, observability, testing, and CI/CD.
• Contributing to system designs spanning multiple services and modules, aligning with architectural best practices.
• Collaborating with product, platform, and research teams to translate AI prototypes into production-ready capabilities.
• Working within a Kubernetes (EKS) environment to deploy scalable, containerized applications.
• Leading the resolution of complex technical challenges across distributed systems.
• Mentoring less-senior developers on engineering principles, GenAI patterns, and platform development.
• Participating in code reviews, architecture sessions, and cross-team initiatives to ensure quality and maintainability.
• Staying informed of the latest developments in generative AI and advocate for responsible integration into product ecosystems.

What We're Looking For

• 4-6 years of software engineering experience.
• Proven experience contributing to technical architecture for large-scale platforms or services.
• Solid understanding of software development methodologies and data modeling principles.
• Deep expertise in Python and Java.
• Proficiency in backend development and familiarity with modern AI/LLM tools and frameworks (e.g., LangChain, LangGraph).
• Experience with Kubernetes (EKS) and cloud-native architectures.
• Proven track record building scalable backend systems and APIs.
• Experience mentoring engineers and contributing to architectural decisions.
• Ability to work collaboratively across functions in an Agile or Kanban environment.

Nice to Have

• Experience operationalizing LLMs or building internal AI platforms.
• Familiarity with observability practices (metrics, logging, alerts).
• Exposure to knowledge graphs or semantic search systems.

U.S. National Base Pay Range: $86,600 - $144,400. Geographic differentials may apply in some locations to better reflect local market rates. If performed in Maryland, the base pay range is $90,900 - $151,700.If performed in New Jersey, the base pay range is $102,333 - $163,467. This job is eligible for an annual incentive bonus.

We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits.

We are committed to providing a fair and accessible hiring process.

If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.

We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law. USA Job Seekers: EEO Know Your Rights.

RELX is a global provider of information-based analytics and decision tools for professional and business customers, enabling them to make better decisions, get better results and be more productive. Our purpose is to benefit society by developing products that help researchers advance scientific knowledge; doctors and nurses improve the lives of patients; lawyers promote the rule of law and achieve justice and fair results for their clients; businesses and governments prevent fraud; consumers access financial services and get fair prices on insurance; and customers learn about markets and complete transactions. Our purpose guides our actions beyond the products that we develop. It defines us as a company. Every day across RELX our employees are inspired to undertake initiatives that make unique contributions to society and the communities in which we operate.