At a Glance
- Tasks: Own and maintain a JavaScript SDK for secure authentication in client applications.
- Company: Join LSEG, a global leader in financial markets infrastructure.
- Benefits: Competitive pay, flexible hybrid work, and continuous learning opportunities.
- Other info: Inclusive culture that values diversity and personal growth.
- Why this job: Make an impact on secure financial transactions while growing your skills.
- Qualifications: Experience in frontend development with React, TypeScript, and SDK design.
The predicted salary is between 60000 - 80000 € per year.
ABOUT US
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs.
LSEG is headquartered in the United Kingdom, with significant operations in 65 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific.
OUR PEOPLE
People are at the heart of what we do and drive the success of our business. Our values of Integrity, Partnership, Excellence and Change shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference.
ROLE PROFILE
We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript SDK, a critical interface that enables secure authentication and seamless integration of our Authentication into client applications across to our customers.
WHAT YOU’LL BE DOING
- Own and maintain a JavaScript SDK built with React and TypeScript, enabling secure integration with our custom Secure Token Service.
- Design intuitive, developer-friendly APIs that abstract complex authentication flows (OAuth2, OpenID Connect).
- Ensure the SDK is secure, performant, and easy to integrate across a wide range of frontend applications.
- Collaborate with backend engineers to align SDK functionality with evolving identity protocols and token flows.
- Build automated tests and CI pipelines to ensure quality, reliability, and backward compatibility.
- Write clear documentation and sample apps to support internal and external developers.
- Stay current with frontend security best practices and contribute to platform-wide improvements.
WHAT YOU’LL BRING
- Proven experience in frontend development, with deep expertise in React, TypeScript, and modern JavaScript.
- Proven experience designing and maintaining SDKs or libraries used by other developers.
- Strong understanding of OAuth2, OpenID Connect, and secure authentication flows.
- Familiarity with CI/CD pipelines, automated testing, and versioning strategies for SDKs.
- Experience with frontend performance optimization, cross-browser compatibility, and accessibility standards.
- Passion for clean code, automation, and continuous improvement.
- Excellent interpersonal skills and a passion for developer experience and security.
WHAT YOU’LL GET IN RETURN
- Competitive compensation with performance-based rewards.
- A flexible hybrid work model that supports work-life balance.
- Access to cutting‑edge tools and infrastructure to do your best work.
- Opportunities for continuous learning, including certifications, conferences, and internal mobility.
- A collaborative culture that values technical mastery, ownership, and innovation.
- The chance to work on a globally critical system that powers secure financial transactions across markets.
We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law.
LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.
Senior Frontend Engineer employer: LSEG
LSEG is an exceptional employer that prioritises the growth and development of its employees, offering a collaborative culture where innovation thrives. With a flexible hybrid work model, competitive compensation, and access to cutting-edge tools, employees can achieve a rewarding work-life balance while contributing to a globally critical system in the financial sector. The company’s commitment to diversity and inclusion ensures that every individual feels valued and empowered to reach their full potential.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Frontend Engineer
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A friendly chat can lead to opportunities that aren’t even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best projects, especially those involving React and TypeScript. This gives potential employers a taste of what you can do.
✨Tip Number 3
Prepare for interviews by practicing common frontend questions and coding challenges. We recommend doing mock interviews with friends or using online platforms to get comfortable.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining our team.
We think you need these skills to ace Senior Frontend Engineer
Some tips for your application 🫡
Show Off Your Skills:When you're writing your application, make sure to highlight your experience with React, TypeScript, and JavaScript. We want to see how you've used these technologies in real projects, so don’t hold back!
Tailor Your Application:Make your application stand out by tailoring it to the role. Mention your experience with SDKs and secure authentication flows like OAuth2 and OpenID Connect. This shows us you understand what we're looking for.
Keep It Clear and Concise:We appreciate clarity! Write your application in a straightforward manner, avoiding jargon where possible. This helps us quickly grasp your qualifications and fit for the role.
Apply Through Our Website:Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy!
How to prepare for a job interview at LSEG
✨Know Your Tech Stack
Make sure you’re well-versed in React, TypeScript, and modern JavaScript. Brush up on your knowledge of OAuth2 and OpenID Connect, as these are crucial for the role. Being able to discuss your experience with SDKs and how you've designed developer-friendly APIs will definitely impress.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in frontend development, especially related to security and performance. Think about examples where you optimised code or improved integration processes. This will demonstrate your ability to tackle real-world issues effectively.
✨Emphasise Collaboration
Since this role involves working closely with backend engineers, be ready to talk about your teamwork experiences. Highlight any projects where you collaborated on aligning functionality or improving workflows. This shows that you value partnership and can contribute to a cohesive team environment.
✨Prepare Questions
Interviews are a two-way street! Prepare thoughtful questions about LSEG’s approach to developer experience and security practices. This not only shows your interest in the company but also helps you gauge if it’s the right fit for you. Plus, it demonstrates your proactive nature!
