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Frontend Developer

Delta Humans • 🌐 In Person

In Person Posted 2 days, 20 hours ago

Job Description

Frontend / Fullstack Engineer

We are partnered with a rapidly scaling AI \& analytics organisation recognised internationally for innovation, growth, and technical excellence. With multiple industry awards and a global footprint across Europe, the US, the Middle East and Africa, they build cutting-edge platforms that help major enterprises understand customer behaviour at massive scale.

Operating at the intersection of

AI, behavioural analytics, and enterprise data

, this company supports clients that collectively manage tens of millions of customers and process billions of interactions daily. Their technology enables organisations to build more meaningful, sustainable, and profitable customer relationships—with a focus on privacy-first signal intelligence and highly accessible insights.

The team has grown to 100+ people across several international hubs and continues to scale quickly. This is a chance to join a business that combines the agility of a fast-growth scale-up with the robustness of a mature, award-winning product ecosystem.

Why Join?

Cutting-edge work:

Build modern user interfaces that interact with advanced AI, data intelligence and agent-driven systems.

Award-winning environment:

Multiple industry wins across AI, analytics, and ethics/diversity categories.

Impactful role:

Shape the user-facing experience of a platform used by major global organisations.

Career acceleration:

Fast-moving environment with clear opportunities to expand remit and ownership.

Hybrid working:

2–3 days per week in the London office, with flexibility the rest of the week.

The Opportunity

We’re seeking a

Frontend / Fullstack Engineer

who enjoys owning features end-to-end and crafting intuitive, elegant, high-quality user experiences. This role sits at the heart of the product, transforming complex data and AI-driven intelligence into interfaces that feel simple, fast, and powerful.

You’ll collaborate closely with product, design, and AI engineering teams—turning concepts into production-ready experiences, integrating with backend APIs, and continuously iterating based on user feedback and performance metrics. If you have an eye for detail, enjoy solving product-centric problems, and love building beautiful, functional UIs, this role is for you.

What You’ll Do

Build intuitive, performant, and scalable user interfaces for both client-facing and internal applications.

Translate concepts, prototypes, and Figma designs into polished, production-ready interfaces.

Own fullstack delivery when required—connecting frontend components to backend APIs and services.

Collaborate with product and design on feature definition, workflows, and UX iteration.

Contribute to the design system, shared component libraries, and frontend architecture.

Integrate UIs with AI-driven agents, workflows, and real-time interactive experiences.

Apply best practices in testing, accessibility, performance, and maintainability.

Participate in design reviews, code reviews, and broader engineering knowledge sharing.

Iterate post-launch using real-world data and user feedback.

What We’re Looking For

Core Skills

Strong foundations in modern Frontend engineering:

JavaScript/TypeScript

,

React

, component patterns, state management, performance and accessibility.

Ability to translate product ideas and design assets into production-quality experiences.

A product-oriented mindset—focused on usability, business value, and the “why” behind features.

Solid Fullstack fundamentals with

Node.js or Python

, API development, and debugging across the stack.

Understanding of testing best practices, CI/CD workflows, and cloud-native development.

Nice to Have

Experience building

data-rich interfaces

, dashboards, visualisations, or complex workflows.

Interest in

AI-driven UI patterns

, agent interactions, or conversational interfaces.

Good design sensibility and appreciation for clean, intuitive UX.

Experience with

Next.js

, monorepos, or modular architectures.

Familiarity with any part of the company’s tech ecosystem.

Tech Environment

Agent \& AI Development

Google ADK, Mastra, MCP (Model Context Protocol), Agent-to-Agent systems

Frontend

TypeScript, React, Redux

Next.js

Shadcn, Material UI, Tailwind CSS

Backend \& APIs

Python, Node.js

Databricks for data \& ML platforms

Infrastructure

AWS, Docker, Kubernetes

Who This Role Suits

This is an excellent fit for someone who:

Loves building polished, modern, user-centric interfaces.

Enjoys switching between frontend craftsmanship and pragmatic fullstack work.

Thrives in collaborative, product-focused environments.

Wants to work with AI-driven systems at real enterprise scale.

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