Senior Frontend & Mobile Engineer

Snowplow; United Kingdom; Remote; GBP 60,000 - 80,000; Full time

Job summary

A leading data infrastructure company is seeking a Senior Frontend & Mobile Engineer to help build data products that empower AI applications. The ideal candidate will have experience in Typescript and React for web applications and Swift and Kotlin for mobile. Responsibilities include developing features, maintaining documentation, and collaborating with cross-functional teams. This role offers a competitive package, flexible working, and a generous holiday allowance.

Benefits

Competitive package with share options

Flexible working

Generous holiday allowance

MacBook and home office equipment allowance

Enhanced parental leave

Qualifications

• Professional experience building engaging user experiences for the Web with Typescript and React.
• Experience in building mobile applications, ideally SDKs, with Swift and Kotlin.
• Solid understanding of security threats and how to overcome them.

Responsibilities

• Work on Typescript/React single-page applications and mobile tracking SDKs.
• Build robust QA, unit, and integration tests.
• Collaborate in Scrum ceremonies and engage with stakeholders.

Skills

Typescript

React

Swift

Kotlin

Web accessibility standards

Data security

Job description

Senior Frontend & Mobile Engineer

Poland/Remote

About Snowplow:

Snowplow is the global leader in customer data infrastructure for AI, enabling every organization to transform raw behavioral data into governed, high-fidelity fuel for AI-powered applications—including advanced analytics, real-time personalization engines, and AI agents.

Digital-first companies like Strava, HelloFresh, Auto Trader, Burberry, and DPG Media use Snowplow to collect and process event-level data in real time, delivering it securely to their warehouse, lake, or stream, and integrate deep customer context into their applications.

Thousands of companies rely on Snowplow to uncover customer insights, predict customer behaviors, hyper-personalize customer experiences, and detect fraud in real time.

The Opportunity:

We are looking for a Senior Frontend & Mobile Engineer with experience in Typescript/React, Swift and Kotlin to join our Data Products team at Snowplow. The Data Products team enables customers to rapidly create, govern, and iterate on high-quality behavioral data products that fuel AI-powered applications. We transform the complex process of data creation from weeks to days through intuitive design tools, automated code generation, and comprehensive governance capabilities.

We believe in supporting engineers to have autonomy and responsibility to make decisions, taking ownership of the product from technical design to code to customer. The ideal fit will be an engineer who loves to learn and take on new challenges, and can solve a variety of problems to ensure the success of the overall service, in partnership with our product and customer-facing teams.

If you are growth-oriented, passionate about technology, and excited about building exceptional UIs and complex business services, we want to hear from you!

Responsibilities:

• Working on our Typescript/React single-page application, as well as our mobile tracking SDKs and code generation tools (both iOS/Swift and Android/Kotlin).
• Embracing AI coding assistants to delegate the boring, repetitive tasks while focusing on the creative, important work. We believe in AI as an enabler of velocity improvements, while being cognizant of the constraints; and deploy its strengths intentionally.
• Building robust QA, unit and integration tests.
• Writing top documentation about the features you help deliver.
• Taking turns to investigate our customers’ escalated tickets and respond
• Collaborating in Scrum ceremonies and engaging with cross-functional teams for requirements.
• Engaging with stakeholders for alignment on project goals and updates.
• Researching new technologies to improve the Snowplow ecosystem.

Requirements:

• You have professional experience building 1) engaging user experiences for the Web with Typescript and React; and 2) mobile applications -or, ideally, SDKs- with Swift and Kotlin.
• You understand web accessibility standards.
• You know what makes a library/toolkit/SDK robust and intuitive to use.
• You have an array of tools under your belt to support making a web/mobile application faster and more accessible.
• You place maximum emphasis on security. Data security and integrity are fundamental to what we do, so you’ll need a solid understanding of security threats and how to overcome them.

What We Offer:

• A competitive package, including share options
• Flexible working
• A generous holiday allowance no matter where you are in the world
• MacBook and home office equipment allowance
• Enhanced maternity, paternity, shared parental and adoption leave

Snowplow is dedicated to building and supporting a brilliant, diverse and hugely inclusive team. We don't discriminate against gender, race, religion or belief, disability, age, marital status or sexual orientation. Whatever your background may be, we welcome anyone with talent, drive and emotional intelligence.

Employment is conditional upon the successful completion of background screening and verification of right-to-work documentation in accordance with applicable laws.