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Who We Are
Kargo creates powerful moments of connection between brands and consumers to build businesses. Every day, our 600+ employees work to radically raise the bar on what agentic AI, CTV, eCommerce, social, and mobile can do to deliver unique ad experiences across the world’s most premium platforms. Taking a creative science approach to all we do, we continuously innovate solutions that outperform industry benchmarks and client expectations. Now 20+ years strong, Kargo has offices in NYC, Chicago, LA, Dallas, Sydney, Auckland, London and Waterford, Ireland.
Kargo creates powerful moments of connection between brands and consumers to build businesses. Every day, our 600+ employees work to radically raise the bar on what agentic AI, CTV, eCommerce, social, and mobile can do to deliver unique ad experiences across the world’s most premium platforms. Taking a creative science approach to all we do, we continuously innovate solutions that outperform industry benchmarks and client expectations. Now 20+ years strong, Kargo has offices in NYC, Chicago, LA, Dallas, Sydney, Auckland, London and Waterford, Ireland.
Who We Hire
Techies who want to build the future. Creatives who want to design it better. Communicators to win business. Collaborators to build it. Data pros who turn numbers into insights. Product builders who turn ideas into innovations. Anyone eager to be on a team that doesn’t stop to ask what’s next, because they’re already building it.
Techies who want to build the future. Creatives who want to design it better. Communicators to win business. Collaborators to build it. Data pros who turn numbers into insights. Product builders who turn ideas into innovations. Anyone eager to be on a team that doesn’t stop to ask what’s next, because they’re already building it.
Our Laurels
- AdAge Best Places to Work
- ThinkLA Partner of the Year
- Built In Best Places to Work
- Cynopsis 2025 Top Women in Media - Jeannine Shao Collins
- Martech Breakthrough Awards - Best Overall Adtech Company
- Digiday Media Awards Best Event
- Cynopsis Media Impact Awards-Best CTV Platform
- Martech Breakthrough Awards-CTV Innovation
- Adweek Media Plan of the Year Awards - Best Use of Insights
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)
Kargo London, England Office
Kargo London, UK Office
London, United Kingdom
What you need to know about the London Tech Scene
London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.
