Location
London

Hours
Full Time

Salary
Negotiable

About the Role
The Tripadvisor Group connects people to experiences worth sharing and aims to be the world’s most trusted source for travel and experiences. The Tripadvisor Experiences Engineering team, distributed across Europe, is responsible for the platform, mobile apps, and all supporting infrastructure. We run systems that help operators build their businesses and enable third parties to utilise our inventory, while providing tools for our customer services team to deliver world-class service internationally.

We are seeking a Principal Product Engineer who combines deep engineering expertise with strong product instincts. You will work across the stack—mobile, web, backend—tackling the highest-leverage problems each quarter. You will partner closely with product, design, and data teams to identify what’s worth building and ship solutions end-to-end. While we expect breadth, you will have real depth in the mobile app ecosystem, supporting our customer-facing experiences. This role requires a generalist with mobile expertise who can lead iOS architecture reviews and resolve backend latency issues.

Key responsibilities include identifying, scoping, and shipping impactful changes across mobile, web, services, and data layers; architecting robust, scalable, and reliable systems; leading technical design reviews with a focus on code, product impact, time-to-ship, and operational cost; driving operational maturity in release management, observability, incident response, and performance monitoring; collaborating with PMs, designers, and engineering leaders to shape product direction; setting the technical bar by example through prototyping and teaching; and clearly communicating trade-offs to engineers, product partners, and senior stakeholders.

Experience
10+ years of software engineering experience with significant hands-on coding; proven track record of shipping product-impacting work end-to-end.
Deep expertise in the mobile app ecosystem (iOS and/or Android) with strong fluency in Swift and/or Kotlin and related technologies including offline sync, push notifications, authentication, persistence, networking, REST/GraphQL.
Demonstrated breadth with serious experience in at least one of web frontend, backend services, data/infra, or platform tooling alongside mobile.
Strong product judgment with the ability to make and defend decisions about what not to build.
Comfortable troubleshooting production issues across stacks including crash analysis, latency tracing, and release-health debugging.
Excellent cross-functional collaboration skills, enhancing the performance of those around you.

About you
You are a generalist with mobile expertise who thrives in a fast-paced environment and enjoys working across multiple technology layers.
You have strong communication skills and can clearly explain technical trade-offs to diverse audiences.
You are proactive in driving operational excellence and technical leadership.
You value teamwork, empathy, and diversity, and contribute to a culture of shared success.

Qualifications
Background in marketplaces, bookings, or transactional consumer products is a plus.
Experience with data-related work such as experimentation, analytics instrumentation, or machine learning-adjacent projects is desirable.