💻 Product Engineer (Full-stack)

Knock is on a mission to help products communicate with their users in a more thoughtful way. Building product notifications in-house takes months, often leading to poor user experiences. We believe that—when done right—product notifications help users find value in the products they use every day. That’s why we built Knock.

We're a remote-first (with a NYC base) Series A startup of 25 employees that believe in the power of great software. We're APIs all the way down at Knock—Stripe for payments, Algolia for search, WorkOS for SSO. We're excited to add Knock to that list and to push forward the API-first movement. If you are, too, come join us and let's build something great together.

We’re backed by top investors and operators including Craft Ventures, Afore Capital, Preface Ventures, Worklife Capital, Guillermo Rauch (CEO/Founder @ Vercel), Scott Belsky (CPO @ Adobe), Adam Gross (CEO @ Heroku), and John Kodumal (CTO @ LaunchDarkly), to name a few.

We're looking for a full-stack engineer to join our small but growing team. Full-stack engineers at Knock work on product features end-to-end, from our customer-facing APIs, through to our Next.js-powered workflow builder. We’re an engineer-led team, with a strong belief in shipping high-quality product at a fast pace. This is a role where you will have a high degree of ownership and autonomy over the features you design, build, and support.

We care deeply about building a team and culture that is inclusive and equitable for people of all backgrounds and experiences, and believe firmly that the best teams are diverse. We particularly encourage people from underrepresented communities to apply.

Last thing: you can be a great fit even if you don't perfectly match what's described below. We know there's a lot we don't know and haven't thought of yet, and we're looking for teammates who can tell us what those things are. If that's you, don't hesitate to apply and tell us about yourself!

• Work on features across the Knock product, from our Dashboard that supports our customers, through our CLI and API, to enable developer workflows

• Own product features from design through to shipped documentation, working closely with our founders and experienced team to shape a feature and ship it to our growing customer base

• Contribute to our open-source SDKs and libraries that our customers use to integrate Knock into their applications

• Talk to and support our customers in bringing to life best-in-class notification systems. We are a team that believes in everyone having direct contact with the customer and bringing that voice to the decisions we make every day

• You have 3+ years of experience building full-stack web applications, with strong fundamentals in JavaScript or (ideally) Typescript, and a background in writing React

• You care deeply about building elegant systems that are delightful to interact with on every level, from API design to documentation and the user interfaces

• You're interested in building sharp tools that solve problems that you and countless other engineers and product teams face on a day-to-day basis

• You like the idea of joining an early-stage team where you can play a meaningful part in shaping the direction of the company, product, and culture

• You might have some prior experience writing Elixir, but this is a nice-to-have, and we’re more than happy to support you in learning the language

Our backend services are primarily written in Elixir (which runs on the Erlang VM). We build our front-end using Next.js in Typescript, powered by GraphQL.
A note on AI

All Knock engineers have access to Claude, Cursor & Devin licenses and budget for LLM API spend (e.g. Claude Code). We’re finding that AI tooling increases our leverage as a small team, but we’re also clear-eyed about AI’s current limitations. You don’t need to be all-in on AI to join this team, but you should be curious and willing to learn with us.