AI Product Engineer (Fullstack)

About WePush

We believe talent is everywhere. The chance to live from it isn’t.

Millions of creators are talented and invisible at the same time. The value they create flows to middlemen, while the brands who want to reach them are stuck in a non-transparent, fragmented market. So we built the tools to fix both sides at once.

Creators turn an account into an income: join a campaign in minutes, make something they’re proud of, and get paid fairly for creativity, not follower count. Brands brief once, activate hundreds of creators, and see content live within 24 hours.

Next year, 10,000 creators will make a living from WePush. When a creator earns, a brand grows. When a brand grows, more creators earn.

WePush is the fastest-growing creator marketing platform in Europe, with over 150,000 creators and 500,000+ collaborations powering brands like L’Oréal, ABOUT YOU, Zalando, and Sony Music.

Two numbers matter to us: how many people make a living through WePush, and how many millions of people brands reach through them.

Technical Overview

We run on a real distributed system: Angular and React frontends, a native iOS app, a Node/TypeScript application server handling booking and matching logic, a fleet of independently deployable backend services on Kubernetes, a real-time layer, a ledger that moves actual money, and a small army of scrapers.

We’re looking for a Fullstack AI Product Engineer who is comfortable moving across all of those layers and who uses AI agent tools as genuine leverage. We use these tools daily to read unfamiliar services, ship changes, and move fast.

What You’ll Actually Work On

  • Native iOS app: SwiftUI, rewritten natively.
  • Web frontend: Our marketplace apps are built in Angular, while newer internal tooling is built in React.
  • Application server layer: A Node/TypeScript service sitting between the frontend and backend fleet, handling booking, scheduling and matching logic, invoicing, and PDF generation.
  • Polyglot microservices fleet: A shrinking Hack/HHVM legacy core and a growing set of services in Node.js and Go, each independently versioned, containerized, and deployed via Helm to Kubernetes.
  • CI/CD pipeline: GitLab CI building images with Kaniko, tag-based semver releases, nightly unstable builds, stable releases promoted through dev to test to manually gated production, and cross-service pipeline triggers when a shared dependency publishes.
  • Scheduled workloads at scale: A couple dozen CronJobs per environment covering reminders, payout checks, stat rollups, token refreshes, and media polling. Each is independently schedulable, tunable, and killable without redeploying the entire service.
  • Money movement: A ledger service backing real balances and payouts.
  • Scraper fleet: Services that scrape platforms that actively fight back through rate limits, bot walls, and reshaped responses, each running on its own schedule with its own failure modes.
  • AWS/serverless edge: Internal tooling and some integrations are moving onto Lambda, API Gateway, and DynamoDB. This is where a lot of new, greenfield work is happening.

What “AI-Driven Builder” Means Here

  • Use AI tools openly as your default way of working to read and understand an unfamiliar service quickly, not just to generate new code. Half the job is figuring out what a cron job actually does and what breaks if you touch it, and AI helps you get that answer in minutes instead of a day.
  • Verify before you trust: You catch a plausible but incorrect AI suggestion before it ships.
  • Operate across languages and layers: You don’t need to be a specialist in everything, including technologies you don’t know yet.
  • Respect the promotion pipeline: You don’t route around dev → test → prod because it’s slower.

The Stack You’ll Touch

  • Web: Angular and React
  • Mobile: Native iOS with SwiftUI
  • Application server: Node/TypeScript
  • Backend: Node.js and Go
  • Legacy: Hack/HHVM core being phased out
  • Infrastructure: Kubernetes, Helm, Docker
  • CI/CD: GitLab CI
  • Ledger: Formance-based ledger
  • Real-time: WebSockets
  • Scheduled workloads: Cron-driven services
  • AWS: Lambda, API Gateway, DynamoDB, S3, and CloudFront

Requirements

You’re a strong fit if:

  • You’ve operated real distributed systems, not just built a monolith and called it done.
  • You’re just as comfortable tracing a bug from a UI symptom — web or native — down through the application server into the backend that caused it as you are building the fix on either end.
  • You’re comfortable being dropped into someone else’s code, in a language you may not know, with real production traffic on it, and using AI tools plus your own judgment to figure out how it actually behaves.
  • You’re honest about uncertainty. “I don’t know, let me check the logs” beats a confident guess, from you or your AI tools.

Not Expected

  • Prior Hack or R experience: Nobody on the team learned either on purpose, and we’re actively phasing both out.
  • A portfolio of AI-free work: We’re not testing whether you can code without tools. We’re testing whether you build good software in a real system.

Benefits

This is a rare opportunity to build at the intersection of AI, creator technology, and consumer products.

WePush is backed by experienced operators from companies including Spotify, Google, and many more. We’re entering our next phase of growth with the ambition, speed, and ownership of a startup, but with a proven product and strong market traction.

As an AI Product Engineer, you won’t be sitting on the sidelines. You’ll work closely with the founders and product team to turn new AI capabilities into products used by brands and creators at scale.

What We Offer

  • Competitive salary and meaningful equity package.
  • High ownership from day one with the freedom to ship, experiment, and influence product direction.
  • Direct access to founders and leadership with fast decisions and minimal bureaucracy.
  • A team of builders: Ambitious, pragmatic, and obsessed with moving fast.
  • An in-person culture in our Berlin office, with flexibility for home office days.
  • Additional perks: Public transport pass, gym membership, recurring team lunches, and more.
  • A front-row seat to building a category-defining technology company.

Our Culture

Regardless of who you are, where you come from, how you look, or what music is playing in your headphones, you are welcome.

If you are a builder and move fast, this role is for you.

CareerBee Logo

Don't miss out on new jobs!

Signup for weekly updates on new jobs so you can be the first to apply

Subscribe to our
Weekly Job Board Updates!

Signup for weekly updates on new jobs
so you can be the first to apply

Contact form for Companies

Are you a talented professional seeking a new opportunity?
Visit our Talents Page.

💻 Career Services

Book our professional career services to help you in your job search

🏛️ Resource Library

Check our blog and videos to get tips for your job search

📬 Job Newsletter

Register with us today to stay up to date with the latest English-speaking jobs.

❔ FAQ

We answer the most common questions