Principal Product Engineer

Overview

As Principal Product Engineer at Zapp, you own the full lifecycle of customer apps across iOS, Android, and web, shaping a world-class experience. You’ll steer AI-enabled features and patterns that speed delivery and create real customer value. You lead architecture decisions, ensure production readiness, and mentor others to lift the team. This is a hands-on engineering leadership role in a fast-growing, AI-driven, customer-obsessed company. You’ll collaborate across teams to deliver fast, reliable software that delights users.

Pay / Benefits

• base salary 135,000 – 175,000
• equity package
• Zapp Credit for testing the service
• 25 days of holiday per year plus bank holidays
• Private health insurance
• Cycle to work scheme

Responsibilities

• Own end-to-end delivery of features across backend, web, and mobile when required
• Lead the integration of AI into product development and ship AI-driven patterns
• Set technical direction, architecture, and standards across the product
• Prototype and drive high-impact bets in collaboration with the team
• Manage on-call responsibility and maintain production reliability and security
• Keep production fast through latency monitoring and hardened release processes
• Mentor peers and uplift engineering quality and craft

Key requirements

• 10+ years of production software experience
• Full-stack capability across backend, web, and infrastructure
• Proficiency with TypeScript, GraphQL, SQL; experience with NestJS and React
• Cloud and DevOps mindset (GCP or equivalent, CI/CD, observability)
• Experience using AI in software development and driving AI-driven product patterns
• Strong API design, scalability, reliability, and security focus
• Excellent written and verbal communication; ability to influence and lead
• Ability to work in uncertainty and deliver with minimal guidance
• Test-driven development and automated testing as a norm
• Production-minded with ownership of feature delivery and on-call responsibilities

• Excellent communicator
• Curiosity and energy
• Delivery-focused and outcome-oriented
• TypeScript
• GraphQL
• SQL

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