Full Stack Mobile Developer

Substack is building a new economic engine for culture, giving the brightest, most interesting, and most creative people on the internet the power of their own publishing platform. The terms of our culture should not be set by gate‑keeping legacy media or chaos‑fueling social media, but by the people who make and participate in that culture. Substack's model, based on direct subscriptions, has fueled an explosion of independent publishing. It empowers creators with economic autonomy, creative ownership, and a direct connection to their most engaged audiences.

We're looking for a Full Stack Mobile Developer to join our Activation team. You'll be responsible for building and supporting features that bring readers and writers to Substack and help them succeed here. This role combines native mobile development excellence (iOS and / or Android) with full‑stack capabilities to create seamless activation experiences across our mobile apps and web platform.

As a member of our Activation team, you'll work in close partnership with designers, product thinkers, and customers to build new mobile offerings and improve critical user journeys. You'll be on the front‑lines of product development, running experiments and iterating rapidly to grow our platform and create what's next for Substack!

Responsibilities

Develop native mobile apps (iOS in Swift and / or Android in Kotlin) for creators and their audiences, with a focus on activation and growth.

Build features across mobile and web to support user activation and conversion.

Iterate on key user flows in the Substack mobile apps and web platform, and run A / B tests to improve activation metrics and drive growth.

Work across our full tech stack (TypeScript / Node.js / Express, React, and Postgres) to deliver end‑to‑end solutions for activation.

Collaborate with designers, writers, support staff, and many others. From product concept and research to implementation, experimentation, and measurement, we expect you to own your work and deliver high‑quality solutions.

Work directly with customers to solve their problems. The entire company (CEO included) participates in customer support in order to drive empathy for our users and help us build better products.

Requirements

At least 5 years of software engineering experience with both mobile and full stack development.

Experience shipping high‑quality native mobile apps (iOS and / or Android) to app stores.

Strong full stack web development experience using Node.js, React, and TypeScript.

Independent and autonomous. We're too small to micromanage, and expect that every person at the company owns their work and can be a leader.

Hold yourself and others to a high standard when working on production systems.

Take pride in building elegant and delightful product experiences. Substack works best when it gets out of the way so creators can focus on writing and connecting with their readers.

Enjoy collaboration with a diverse group of thinkers while bringing your own unique experience and background to the team.

Believe in Substack's mission to build a better business model for writing.

Have a degree in Computer Science or equivalent industry experience.

Experience at a fast‑growing startup or working on a high‑performing growth / activation team is not required, but is a plus.

Substack's compensation package includes a market competitive salary, equity for all full time roles, and exceptional benefits. Our cash compensation salary range for this role is $175,000 - $225,000. Final offer amounts are determined by multiple factors including candidate experience and expertise and may vary from the amounts listed above.

Substack is an equal opportunity employer. All applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, gender identity or transgender status), age, national origin, veteran or disability status. We’re seeking people passionate about enabling independent expression and building a better business model for creators. If you want to see what media, communities, and content can become when unmoored from advertising models, and you have the skills and experience to contribute, we’d love to meet you.

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