At a Glance
- Tasks: Own and maintain a JavaScript SDK for secure authentication in client applications.
- Company: Join LSEG, a leader in financial technology with a collaborative culture.
- Benefits: Competitive pay, flexible hybrid work, and continuous learning opportunities.
- Other info: Be part of a diverse team that values innovation and technical mastery.
- Why this job: Make an impact on secure financial transactions while working with cutting-edge tech.
- Qualifications: Expertise in React, TypeScript, and designing developer-friendly SDKs.
The predicted salary is between 60000 - 80000 £ per year.
Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will maintain and evolve our JavaScript SDK, a critical interface that enables secure authentication and seamless integration of our authentication into client applications across our customers.
Responsibilities
- 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.
Qualifications
- 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.
Benefits
- 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.
Equal Opportunity
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. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.
Senior Frontend Engineer in London employer: Dormont Manufacturing Co
LSEG is an exceptional employer for Senior Frontend Engineers, offering a dynamic and collaborative work culture that prioritises technical mastery and innovation. With a flexible hybrid work model, competitive compensation, and ample opportunities for continuous learning and career growth, employees can thrive while contributing to a globally critical system that enhances secure financial transactions. Join us to be part of a team that values ownership and developer experience in a supportive environment.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Frontend Engineer 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 Dormont Manufacturing Co 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 Dormont Manufacturing Co.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Dormont Manufacturing Co.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Dormont Manufacturing Co that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Frontend Engineer in London
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 Dormont Manufacturing Co.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Dormont Manufacturing Co 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 Dormont Manufacturing Co
✨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 Dormont Manufacturing Co 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.
