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Application Engineer

Yesterday 2025/07/19
Other Business Support Services
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Job Description

Application Engineer- Customer Lifecycle Engineering, CMR 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. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity. 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. LSEG’s ticker symbol is LSEG. 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. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential. We know that real personal growth cannot be achieved by simply climbing a career ladder – which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 65 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers. ROLE PROFILE As an Application Engineer, you will be instrumental in building and optimising applications using Retool. You will enhance our capabilities in developing internal tools and client-facing interfaces with speed and efficiency. TECH PROFILE/ESSENTIAL SKILLS • 3-5 years of technical experience. • 3+ years of hands-on experience with Retool application development. • Proficient in writing efficient and scalable JavaScript code. • Solid experience with API integrations and managing databases. • Good understanding of UI/UX design principles and application performance optimisation. • Strong problem-solving skills and attention to detail. • Excellent communication and teamwork abilities. • Eagerness to learn and adapt in a fast-paced environment. • Experience with providing technical solutions and supporting documentation. PREFERRED SKILLS AND EXPERIENCE • HTML (Hypertext Markup Language): Proficiency in HTML is fundamental, as it is the backbone of web content, structuring the elements and layout of web pages. • CSS (Cascading Style Sheets): Strong knowledge of CSS is essential for styling web pages, controlling typography, colors, and layouts, and ensuring a visually appealing design. • JavaScript: Mastery of JavaScript is crucial for adding interactivity, functionality, and dynamic features to web pages. This includes using libraries like jQuery and modern JavaScript frameworks like React, Angular, or Vue.js. • Responsive Web design • CSS Preprocessors: Familiarity with CSS preprocessors like SASS or LESS enhances CSS maintainability and organization. • Proficiency in using version control systems like Git for code collaboration, tracking changes, and maintaining codebase integrity. • Experience with front end frameworks and libraries is often required, depending on the specific role. • Knowledge of techniques to optimize web page loading times, minimize HTTP requests and reduce resource sizes for improved performance. • Ensuring that web applications work consistently across different web browsers and platforms, with the ability to debug and address compatibility issues. • Proficiency in using browser developer tools to debug JavaScript, CSS, and HTML issues and conduct testing for functionality and usability. • Familiarity Build Tools and Task Runners. • Integrating with various APIs (Application Programming Interfaces) to fetch and display data from external sources. • UI/UX Principles: A basic understanding of UI and UX design principles is essential for collaborating effectively with designers and ensuring a user-friendly interface. • Problem-Solving: Strong problem-solving skills are crucial for troubleshooting issues and finding efficient solutions in a dynamic web development environment. • Ability to work independently and in a team environment. • Ability to communicate effectively in English with all levels of staff, both orally and written. • Ability to handle own work and multitask to meet tight deadlines without losing sight of priorities under minimum supervision. • Highly motivated, self-directed individual with a positive & pro-active demeanor to work. • Customer and service focused, with determination to meet their needs and expectations. • Be driven and committed to the goals and objectives of the team and organization. • Experience with JIRA and Confluence EDUCATION AND PROFESSIONAL SKILLS • BE/MS degree in Computer Science, Software Engineering or STEM degree (Desirable). • Solid English reading/writing capability required. • Good communication & articulation skills. • Curious about new technologies and tools, creative thinking and initiative taking. • Agile related certifications preferable. DETAILED RESPONSIBILITIES • Collaborate with development teams and product managers to conceptualise software solutions using Retool. • Design and implement highly efficient user interfaces for internal and external applications. • Write robust JavaScript code to extend Retool's functionalities and integrate with third-party and internal APIs. • Ensure applications are responsive, performant, and scalable. • Engage in software testing to guarantee responsiveness and efficiency. • Troubleshoot, debug and upgrade applications to ensure high availability and reliability. • Create and maintain technical documentation related to application configuration, design, and deployment strategies. • Continuously seek to improve applications by exploring new features and capabilities released by Retool. • Responsible for building and maintaining a relationship with business collaborators and impacted users. • Proactively identifies, recommends, and implements improvements to the process as it relates to assigned projects. • Frequently keeps up to date with the latest industry development and technology innovations. • Flexible in approach, adapting plans and strategies to help manage risks around ambiguity. • Strategic problem solver with strong intuition for business and well-versed in current technological trends and business concepts. LSEG PURPOSE AND VALUES Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth. Underpinning our purpose, our values of Integrity, Partnership, Excellence and Change set the standard for everything we do, every day. They guide the way we interact with each other, the partners we work with and our customers. Delivering on our purpose and living up to our values is a responsibility that we all share. To achieve our ambitions through a strong culture, People Leaders need to role model our Values and create the culture for everyone at LSEG to be at their best.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.


Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.


Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.


LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.


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.


Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.


If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.



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