Frontend Engineer

Reposted 11 Days Ago
London, Greater London, England
In-Office
Mid level
AdTech • Digital Media • Marketing Tech • Mobile
Art. Tech. Results.
The Role
As a Frontend Developer, you'll architect front-end interactions, deliver innovative media features, and ensure code quality using React and modern tools.
Summary Generated by Built In

Kargo unites the world's leading brands, retailers and premium publishers across screens using innovative technology and advanced creative ad formats. At Kargo, we're all about bringing together the best of the best with a spark of creativity to stand out from the crowd. The same is true for our employees. What makes Kargo and each Kargo team member exceptional makes our company special. Kargo believes differences should be celebrated and is committed to diversity in the workplace. As an Equal Opportunity employer, we do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, marital status, age, national origin, protected veteran status, disability or other legally protected status. Individuals with disabilities are provided reasonable accommodation to participate in the job application process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.
Founded in 2003, Kargo is a global company headquartered in New York with offices around the world.

Title: Frontend Developer

Job Type: Permanent
Job Location: London

The Opportunity

As a Frontend Developer working at Kargo you will have the opportunity to work on cutting edge technologies, delivering engaging user experiences across the desktop and mobile. As part of this role you’ll be working on the next generation of media planning and buying tools, finding new and innovative ways to simplify complex workflows. You’ll be responsible for helping to guide our overall approach to front-end development and delivering the big little things that really take the user experience to the next level.

The Daily To-Do

In your day-to-day role, you will be responsible for:

  • Collaborating with your engineering team to architect front-end and back-end interactions and design reusable APIs.
  • Delivering industry-changing features that rethink media planning & buying.
  • Implementing and refining components within a reusable design system.
  • Ensuring code quality and best practices through implementation of continuous integration and delivery.

Qualifications : 

  • Expert in React with a strong focus on functional components and modern patterns (hooks, context, etc.).
  • Proficient in Javascript, TypeScript and Node.js.
  • Hands-on experience with Next.js, Remix or similar frameworks, including SSR, routing, and performance optimization.
  • Familiarity with monorepo tools such as Nx or Turborepo for managing scalable codebases.

Nice to have: 

  • Exposure to backend technologies and systems design.
  • Experience with gRPC, Protocol Buffers, or other binary communication protocols.
  • CI/CD pipeline familiarity.
  • Performance monitoring and front-end observability tools.
  • UX/UI sensibility and collaboration with design teams.

Follow Our Lead

  • Big Picture:  kargo.com
  • The Latest:  Instagram (@kargomobile) and LinkedIn (Kargo)

Top Skills

JavaScript
Next.Js
Node.js
Nx
React
Remix
Turborepo
Typescript
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The Company
HQ: New York, NY
620 Employees
Year Founded: 2003

What We Do

Kargo creates breakthrough cross-screen ad experiences for the world’s leading brands and publishers. Every day, our 600+ employees bring the power of their creativity and diversity to radically raising the bar on what mobile, CTV, AI, social, and eCommerce can do to wow consumers and build businesses. Now 20 years strong, Kargo has offices in NYC, Chicago, Austin, LA, Dallas, Sydney, Auckland, London and Waterford, Ireland. Humble brag: In 2024, Kargo was recognized as a Best Place to Work by Built In.

Why Work With Us

The key to our success is our people. We’ve built a community that values teamwork, is not afraid to take chances and relentlessly strives to disrupt the industry and stand out from the crowd. Diversity is fundamental to the Kargo culture as we celebrate and embrace our differences in our inclusive workplace. Founded in 2003, Kargo is headquartered

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Kargo Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: 3 days a week
HQNew York, NY
Melbourne, AUS
Brisbane, AUS
Sydney, AUS
Singapore
Auckland, NZ
Austin, TX
Chicago, IL
London, UK
Santa Monica, CA
Waterford, Ireland
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