Senior Mobile Engineer


Who We Are

We are building an AI Coach for field sales. Most sales professionals in the U.S. work in field sales, but get ZERO on-the-job coaching because they are alone in the field. Top sales reps out-earn surgeons, but most do not. We believe that with the right tooling, Field Sales can become the most accessible path to financial freedom (see top secret master plan).

Our founders, Joe and Jake, were top-performing sales reps before becoming software engineers and met while building a previous sales tool that has helped over 100,000 sales reps. Our team is world-class, hailing from McKinsey, Amazon, Grammarly,, Stanford, and UPenn.

We are a profitable company, and over 1,000,000 conversations have been recorded through Siro.

**A Warning**  Nobody has accomplished what we have set out to do. The journey won’t be easy, but we’re well on our way, and we have a plan. If this is exciting to you, let’s talk.

The Role

As a Senior Mobile Engineer, you will be one of the first 5 engineers at the company, responsible for building ambitious new features end-to-end while ensuring the Siro app remains performant and bug-free.

Our mobile app is loved by users (4.9 stars from 350+ App Store reviews) and is built with a React-Native & Typescript codebase powered by a Firebase+GCP fully serverless backend. We have Mixpanel analytics, Bugsnag error logging, and Intercom for customer support. We also Mobot for automated Q&A and Codepush for OTA updates.

You Will

  • Architect and assemble core features, including novel interfaces powered by LLMs on the way to building a world-class AI coach and sales co-pilot
  • Write great code quickly and be counted on to deploy with minimal code review
  • Communicate directly with users to understand and resolve bugs.
  • Relentlessly raise the bar for quality and easy-of-use in field sales software.
  • Work directly with the founders, Joe and Jake, daily and be counted on to tell them when they’re wrong


  • 4+ years of professional engineering experience
  • Fluent in React Native and Typescript
  • Proven track record of high-performance

Nice To Have

  • Experience at a <300 person startup
  • Experience building mobile SDKs


  • $150,000 - $180,000 + significant equity

Our Culture

We work three days per week out of our office at 22 Vanderbilt (next to Grand Central).

As a small team, you play a big role in shaping our culture. We are looking for teammates who match our values:

  • Be Humble. - “In cultures of arrogance, people get rewarded for expressing certainty and conviction. The most confident speaker claims the most status. In cultures of humility, people are applauded for admitting ignorance and asking questions. The most complex thinker earns the most respect.” - Adam Grant
  • Believe in growth - Focus on the arc not the point. You can be better tomorrow. Other people can be better tomorrow.
  • Act daringly. Dare to dream, think, and execute at a level that scares you.
  • Serve individuals. Siro exists to help sales reps.
  • Don't Be Elitist - Respect should not be dictated by social, economic, or educational status.

Siro is an equal opportunity employer. We aim to create an environment where every team member at Siro feels like they belong so they can have a greater impact on our business and customers. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

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