Front End Engineer

Job Summary:

At the heart of our platform we track performance marketing data and build a number of solutions to turn this data into useful information for our customers. We work with a lot of data, generating over a billion events across our infrastructure daily. We aim to make as much of this data available in real-time as possible, which is no mean feat at this scale! Our platform is powered by our REST APIs and everything is developed with an API-first approach.

The primary technologies we use are PHP, Python, JavaScript (React), and Kafka. Data is stored in MySQL, PostgreSQL, Druid and Redis. We are constantly evolving our platform and tools to take advantage of the ever-changing tech landscape. We deploy to production several times a day.

As a Front-End Engineer at Partnerize, you will:

• Drive Outcomes: Take high-level ownership of features from discovery to delivery, autonomously driving outcomes to achieve impactful business results.
• Build & Scale: Develop and maintain high-quality React applications that are modular, performant, and easy to maintain.
• AI Integration: Collaborate on the frontend implementation of Agentic AI systems, creating intuitive interfaces that allow users to interact with and oversee autonomous agents.
• Collaborate: Work within a cross-functional "Tribe" alongside Product Managers, Designers, and Backend Engineers in a highly autonomous and collaborative environment.
• Champion Quality: Write clean, well-tested code, we expect robust testing (Unit/Integration/E2E) to be a core part of your development process.
• Master the Domain: Gain a deep understanding of the complex business logic behind global performance marketing.

You are a software engineer with:

• React Expertise: Deep professional experience building complex web applications using React and the modern JavaScript/TypeScript ecosystem.
• Testing Mindset: A strong commitment to shipping well-tested code using modern tools (e.g. Jest, React Testing Library, Playwright, or Cypress).
• State Management: Fluency in managing complex application state (e.g., Redux Toolkit and React Context).
• API Integration: Extensive experience consuming and assisting designing contracts for RESTful and GraphQL APIs in an API-first environment.
• Self-Starter Attitude: The ability to communicate in a concise way, listen to others, and drive projects forward with minimal supervision.

We hope you have:

• Agentic AI Exposure: Experience or a strong interest in building UIs for Agentic AI systems (e.g., integrating with LLM-based agents, LangChain, or autonomous workflow tools).
• TypeScript Mastery: A preference for type-safe development in large-scale codebases.
• Docker Knowledge: Experience with container technologies to support a seamless local development workflow.

Company Benefits

• 25 days holiday in addition to bank holidays
• Enhanced Parental Leave: 6 months full pay for birth parent, 4 weeks non-birth parent at full pay after one year employment
• 5 extra 'Partnerize Parental Days' each year
• Private Medical Insurance through Bupa
• Enhanced pension contributions
• Cycle to Work scheme
• Eye Care Vouchers
• Life Assurance
• Enhanced Wellness Program including access to EAP, Wellness Coaching&Wellness Fridays program
• Regular company events and activities

Interview Process

• Recruiter Call
• 1st stage - tech assessment
• 2nd stage - virtual white board exercise
• Decision