Senior Staff Software Engineer, Mobile

About the Opportunity

We are looking for a Senior Staff Software Engineer to join our mobile team sitting at the intersection of engineering rigour, consumer growth craft, and product instinct. This is not a feature delivery role and you will own the engineering end-to-end. The ideal profile combines a solid engineering foundation, and the conviction to bring proposals, not just execute them.

Responsibilities

Own the full engineering lifecycle through to production launch and iteration.

Build and optimise systems.

Collaborate closely with cross functional stakeholders across multiple regions to translate commercial goals into concrete, data-backed engineering proposals.

Apply AI coding tools actively in your workflow to accelerate development, improve code quality, and bridge across tech stacks where needed.

Drive technical decision-making on growth infrastructure, articulating trade-offs clearly and defending or revising your positions based on evidence.

Mentor engineers on the team and help establish a culture where engineers bring solutions, not just responses.

Minimum Qualifications

8+ years of software engineering experience with a track record of shipping production-quality systems at scale.

Actively uses AI tools as a core part of your engineering workflow - not just for code generation, but for building repeatable workflows and bridging across stacks.

Outspoken and proposal-driven: you come to the table with a point of view, push back when you disagree, and bring data and a counter-proposal rather than just flagging concerns.

Strong cross-functional communication - comfortable working with Product Manager, Business Development, and local markets to align on goals and hold the line on engineering quality.

Data instincts: you think in funnels, know how to instrument what matters, and use metrics to drive decisions.

Preferred Qualifications

Mobile development experience in iOS (Swift/Objective-C) or Android (Kotlin/Java) - or backend experience building growth systems that serve mobile apps directly (e.g. growth APIs, attribution pipelines, notification infrastructure).

Experience with Rust or other systems languages - especially candidates who have recently migrated from mobile-native stacks and are building fluency in backend tooling.

Background in fintech, crypto, or regulated consumer financial products.

Experience operating across US, EEA, and APAC markets.

A/B experiment framework ownership at meaningful scale.