Sr Android Engineer Engineer / To Lead Mobile App Dev on site

Simple Solutions; San Francisco (CA); Hybrid; USD 150,000 - 230,000; Full time

Job summary

Simple Solutions in San Francisco is seeking a senior Android engineer to lead our mobile client development. You will architect the Android stack, set standards, and deliver a highly performant, secure app from ground up, with room to expand to iOS and web as we scale.

You should have 8–10+ years shipping consumer Android apps in Java or Kotlin, startup experience, and a track record building for emerging markets, including fintech contexts.

Qualifications

• 8–10+ years shipping consumer Android apps in Java or Kotlin
• Experience building for emerging markets, including fintech contexts
• Strong architecture and leadership in mobile product development

Responsibilities

• Lead the Android stack and set engineering standards for the mobile client
• Architect, build, and deliver a highly performant, reliable, and secure Android app from ground up
• Collaborate on timelines and contribute to iOS and web efforts as the product scales

Skills

Android development

Java/Kotlin

Startup experience

Mobile architecture

Job description

San Francisco - Bay Area, United States | Posted on 12/18/2025

Job Title: Sr. Android Engineer Engineer / To Lead Mobile App Dev on site

Location

SF/Bay Area, California working at an upstart company in Fintech/Financial App for emerging markets.

Please provide your Github and Linkedin links

We're building a consumer finance app for emerging markets, in partnership with extremely large distribution partners. We are creating a joint virtual banking and cryptocurrency wallet that allows users all over the world to move seamlessly within our financial ecosystem.

Why now: stablecoins are changing cross-border payments. There is an opportunity to rebuild financial infrastructure for the 3 billion people who need better financial rails.

We're a small, senior-only team moving fast. We are well-funded with the ability to offer high cash compensation, based in SF, and led by proven founders with successful exits. Every hire shapes our product direction while we make Day 1 impact on global financial inclusion.

Job Description

The Role

We're seeking astrong Android Engineerto lead our mobile client development. We will also be building an iOS and a mobile-friendly web app in parallel, so there may be room to stretch impact depending on your skills. You'll architect the Android stack, set standards, and build a highly performant, reliable, and secure app from the ground up. This role could evolve into a mobile lead across platforms as we scale.

Interview Stages 4

MUST HAVE SKILLS

• - Strong early stage startup/founding engineer experience
• - 8-10+ years building and shipping consumer-facing Android apps natively in Java or Kotlin at scale
• - Experience building for the Latin American Market
• - Experience in financial technology

Full-stack engineering skillset and ability to flex across other parts of the stack

Requirements

First candidate was very competent enterprise engineering leader, but client is looking for someone super hands-on, brings some mobile exposure, and someone who has start up experience is what they want. NOT someone who has been high up in management at an enterprise corporation, which is a big mismatch with this client