Lead Front-End Engineer (up to £175k)

Lead Front-End Engineer (up to £175k)

Full-Time 157500 - 175000 £ / year (est.) No working from home possible
Dex

At a Glance

  • Tasks: Lead the front-end development of AI-driven financial solutions and set coding standards.
  • Company: Fast-growing fintech company revolutionising workflows with AI technology.
  • Benefits: Attractive salary, flexible working options, and opportunities for professional growth.
  • Other info: Dynamic work environment with significant career advancement potential.
  • Why this job: Join a pioneering team and shape the future of finance with cutting-edge technology.
  • Qualifications: Expertise in front-end architecture, TypeScript, and performance engineering.

The predicted salary is between 157500 - 175000 £ per year.

The role

This company builds AI agents that automate complex, data-intensive workflows for financial services.

These digital teammates reason across vast datasets, write code, and produce client-ready outputs — often 20x faster than human consultants.

They've achieved significant traction in under a year, securing one of the largest Series A rounds in fintech history from leading investors.

You’ll join as a Lead Front-End Engineer, owning the front-end craft across the entire product.

This isn’t about building features in isolation.

It’s about defining the architectural patterns, guidelines, and quality standards that every engineer — and even the AI agents themselves — will build against.

You’ll shape how a full-stack team scales its UI output, ensuring consistency and performance as the company grows rapidly.

  • The work
  • Define and implement core UI architecture and design systems.
  • Establish front-end best practices and coding standards for a full-stack engineering team.
  • Guide the integration of AI-generated UI components, ensuring consistency and quality.
  • Drive performance engineering initiatives, identifying and resolving deep-seated bottlenecks.
  • Mentor engineers on front-end excellence and maintain a high bar for craft.

What You Bring

  • Deep front-end fundamentals. You understand browser internals, rendering pipelines, and can articulate trade-offs beyond specific frameworks.
  • Proven experience designing and implementing scalable front‑end architectures and design systems.
  • Serious performance engineering instincts. You diagnose and fix root causes, not just surface‑level symptoms.
  • Expert‑level Type Script.
  • Obsessive attention to detail and a high bar for UI craft.

As part of the recruitment process at Dex, we process your personal data in accordance with our Privacy Notice for Job Applicants.

This notice explains how and why you data is collected and used, and how you can contact us if you have any concerns.

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Lead Front-End Engineer (up to £175k) employer: Dex

Join a pioneering early-stage venture-backed company at the forefront of building foundation models for extreme physics, where you will have the unique opportunity to shape the engineering culture from day one. With a strong focus on innovation and collaboration, this role offers competitive compensation, a dynamic work environment, and the chance to contribute to critical advancements in global infrastructure and energy. You'll be part of a small, research-heavy team that values your expertise and encourages personal growth, making it an excellent place for those looking to make a meaningful impact.

Dex

Contact Details:

Dex Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Lead Front-End Engineer (up to £175k)

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 Dex 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 Dex.

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 Dex.

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 Dex 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 Lead Front-End Engineer (up to £175k)

Front-End Fundamentals
UI Architecture Design
Design Systems Implementation
Performance Engineering
TypeScript
Browser Internals Knowledge
Rendering Pipelines Understanding

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 Dex.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Dex 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 Dex

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 Dex 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.