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Application Engineer

LSEGLondon, United Kingdom
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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.

What You’ll Be Doing

  • 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 user documentation related to application configuration, design, and deployment strategies.
  • Constantly 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.
What You’ll Bring
  • Proficiency in HTML is fundamental, as it is the backbone of web content, structuring the elements and layout of web pages.
  • Strong knowledge of CSS is critical for styling web pages, controlling typography, colors, and layouts, and ensuring a visually appealing design.
  • 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
  • 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.
  • Familiarity Build Tools and Task Runners.
  • Integrating with various APIs (Application Programming Interfaces) to fetch and display data from external sources.
  • Problem-Solving: Strong problem-solving skills are crucial for solving issues and finding efficient solutions in a dynamic web development environment.
  • 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.

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FAQ

Is the Application Engineer position at LSEG remote?
Yes. This role was posted on Remote Frontend Jobs, a job board that lists exclusively fully remote positions.
When was this Application Engineer job posted?
This listing was posted on December 18, 2025 and is still open for applications.
How do I apply for the Application Engineer position at LSEG?
Use the apply button on this page — it takes you directly to the employer’s application page.

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