Senior Software Engineer I (Java & JavaScript) in London

Senior Software Engineer I (Java & JavaScript) in London

London Full-Time 63000 - 77000 £ / year (est.) Hybrid
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At a Glance

  • Tasks: Design and develop high-performance applications using Java and JavaScript.
  • Company: Join a global leader in information and analytics, making a real impact.
  • Benefits: Flexible hours, generous vacation, comprehensive pension plan, and employee discounts.
  • Other info: Dynamic work environment with opportunities for mentorship and career growth.
  • Why this job: Be part of a team that shapes the future of science and healthcare.
  • Qualifications: Experience in software development, especially with Java, JavaScript, and identity providers.

The predicted salary is between 63000 - 77000 £ per year.

Do you enjoy designing and developing scalable, high-performance applications using Java and Java Script?

Do you enjoy designing and developing scalable, high-performance applications using Java and Java Script?

About The Team

You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier’s global product suite.

About The Team

You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier’s global product suite.

We build and operate a highly available identity platform that integrates with multiple identity providers, entitlement services, and downstream APIs, running on AWS ECS and EKS.

About The Role

This position is performed by an experienced professional and will undertake difficult research, design, and software development assignments within a software functional area or product line, and provides direct input to project plans, schedules, and methodology in the development of cross-functional software products under the guidance of more senior members of the squad.

This position performs software design - typically across multiple components; develops the skills of mentoring more junior members of the team and works with others to talk to users/customers and translates their requests into solutions.

Key Responsibilities

  • Interface with other technical personnel or team members to finalize requirements
  • Write and review portions of detailed specifications for the development of complex system components
  • Complete complex bug fixes
  • Implement and guides other to continuous integration, delivery, and deployment software delivery practices
  • Identifies operational requirements for logging, instrumentation, and alerting and works with Senior II to ensure operational requirements are met
  • Proficient in implementing continuous integration, delivery, and deployment software delivery practices
  • Aware of operational requirements and implementation for logging, instrumentation, and alerting
  • Work closely with other development team members to understand product complex requirements and translate them into software designs.
  • Successfully implement development processes, coding best practices, and code reviews
  • Operate in various development environments (Agile, Waterfall, etc.) while collaborating with key stakeholders
  • Resolve complex intermediate technical issues as necessary
  • Pair Programming with squad members to support the learning and development of others
  • Develop skills to mentor less senior software developers on development methodologies and optimization techniques

Requirements

  • Knowledge of software development methodologies (e. g., Agile, Waterfall)
  • Intermediate proficiency with data manipulation language, including optimization techniques
  • Intermediate understanding of normalized/dimensional data modelling principles
  • Intermediate knowledge of multiple data storage subsystems
  • Confident practitioner in development languages including but not limited to: Java/J2EE, Java Script, JSP, HTML, Node. js, React, XML, SQL, Windows, Unix.
  • Experience with Keycloak, Auth0, or another identity provider, including realm configuration, authentication flows, and OIDC client setup.
  • Proficient research skills
  • Developing knowledge in Industry best practices in development
  • Knowledge in using and developing in applicable toolsets
  • Ability to interface competently with other technical personnel or team members to finalize requirements
  • Ability to work well with internal and external technology resources
  • Knowledge of test-driven development
  • Ability to write and review portions of detailed specifications for the development of complex system components
  • Ability to complete complex bug fixes
  • Good oral and written communication skills
  • Good to Have
  • Experience using AI-assisted development tools, such as Claude, Git Hub Copilot, or Codex, for test authoring, stub generation, coverage analysis, or test-output investigation.
  • Experience treating AI-assisted tools as productivity accelerators within a quality engineering workflow while maintaining appropriate review and validation practices.
  • Familiarity with Keycloak or another identity provider, including realm configuration, authentication flows, and OIDC client setup.
  • Experience with Terraform or another infrastructure-as-code tool, including the ability to read infrastructure definitions and understand how configuration changes affect system behaviour and test coverage.
  • Experience working with Docker and Kubernetes.

Why Join Us?

  • Work in a way that works for you
  • Working flexible hours - flexing the times when you work in the day to help you fit everything in and work when you are the most productive.
  • Working for you

Benefits

  • Comprehensive Pension Plan
  • Generous vacation entitlement and option for sabbatical leave
  • Maternity, Paternity, Adoption and Family Care leave
  • Personal Choice budget
  • Internal communities and networks
  • Various employee discounts
  • Recruitment introduction reward
  • Employee Assistance Program (global)

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

About The Business-

A global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society.

Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education, and interactive learning, as well as exceptional healthcare and clinical practice.

At Elsevier, your work contributes to the world’s grand challenges and a more sustainable future.

We harness innovative technologies to support science and healthcare to partner for a better world.

Senior Software Engineer I (Java & JavaScript) in London employer: Relx Plc

At RX Global, we pride ourselves on fostering a dynamic and inclusive work culture that empowers our employees to thrive. As a Cloud DevOps Engineer in Richmond, London, you will enjoy flexible working hours, opportunities for professional growth, and the chance to work with cutting-edge AI automation technologies. Our commitment to innovation and collaboration ensures that you will be part of a team that values your contributions and supports your career development.

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Contact Details:

Relx Plc Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Software Engineer I (Java & JavaScript) in London

✨Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Relx Plc or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

✨Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Relx Plc.

✨Tap into Online Developer Communities

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✨Explore Job Boards Specifically for Tech Roles

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We think you need these skills to ace Senior Software Engineer I (Java & JavaScript) in London

Java
JavaScript
J2EE
JSP
HTML
Node.js
React

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Relx Plc.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Relx Plc and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Relx Plc

✨Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

✨Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Relx Plc uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

✨Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

✨Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.