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AI Engineer

vor 2 Wochen

Berlin, Berlin, Deutschland Knowunity Vollzeit 80.000 € - 120.000 € pro Jahr
ABOUT US

We are building a future where every student on the planet can access, enjoy, and benefit from the highest quality education. Since founding Knowunity straight out of high school in 2020, we've been committed to revolutionising how students learn.

Millions of students already use our AI learning companion weekly. We just raised €27m from strong Investors - one of Europe's largest education rounds in the past years. The AI learning market is at an inflection point, finally enabling true personalisation at scale, and we're determined to build the first AI learning unicorn in this space.

You will join a truly driven team of 60 hands-on builders serving 1 billion students worldwide. If we execute on our product vision, you will have built something that transforms education globally.

This is your chance to be part of building a generational company.

Your mission

The problem you'll solve: You'll design and ship AI-powered features that directly impact millions of students - transforming how they learn and helping us scale toward our mission of becoming the #1 AI learning companion for 1 billion users.

Your ownership:

  • Own and build end-to-end AI products that deliver measurable value to students across our global user base.

  • Drive technical decisions that align with product impact - choosing the right tools, models, and approaches to move key metrics like DAU and retention.

  • Translate product ideas into real features by collaborating cross-functionally and contributing actively to product strategy.

Why this matters: Every AI feature you build gets shipped fast and used by real students - meaning your work has an immediate and measurable effect on learning outcomes, user growth, and product-market fit. You'll be directly accelerating our core business metrics and impact on students worldwide.

What success looks like: You'll ship meaningful AI-driven features quickly and iterate based on real usage data. Your technical contributions will be visible in the metrics, boosting usage, retention, and engagement. You'll help shape a product that students rely on every day, while growing your skills in a team that values speed, autonomy, and ownership. Over time, you'll be known for building solutions that are not only technically sound, but that truly matter to our mission.

Your story

Your mindset
You're the type of person who:

  • Thinks in prompts and systems - you know how to speak the language of LLMs and can make them do what others can't

  • Builds to ship - you love moving fast, testing ideas in code, and iterating quickly based on real feedback

  • Serves the user, not the process - you focus relentlessly on impact, not bureaucracy

  • Thrives in ambiguity - when priorities shift, you don't stall—you adapt and move

  • Leverages AI - as a force multiplier in everything you do

  • Values excellence over comfort - mediocrity isn't in your vocabulary


Your track record
You've worked hands-on with large language models, tuning prompts, integrating APIs, building prototypes, and pushing performance. You've shipped code in real-world products and know how to balance speed with quality. You've helped turn messy ideas into useful features that delight users and scale with smart engineering.

Must-haves

  • Experience working with LLMs and strong prompt engineering instincts

  • Proficiency in at least one backend language (e.g. Go, TypeScript, Python)

  • Fluent English; German is a plus

  • Ready to work from our Berlin office 5 days/week (with some flexibility)

What we offer

Not for everyone, everything for the right ones.

  • Competitive compensation and equity: We're are building Knowunity to dominate the global AI learning market. Your compensation package includes competitive salary paired with meaningful equity in a company with genuine unicorn potential. Team members who help us reach that goal will be rewarded accordingly.

  • Elite team and true ownership: You'll work alongside 60 exceptional people who match your ambition within a flat hierarchy - direct access to founders and leadership without bureaucratic middle layers. You'll own entire areas from conception to delivery with real decision-making authority.

  • Meaningful impact at scale: Your work will have immediate, measurable impact on education globally and directly improves how millions of students learn.

  • Benefits: 28 days annual leave +1 extra day per year with Knowunity, 40 days work from anywhere, personal development budget, mental health support via Nilo, Urban Sports Club, monthly become1 retail vouchers, team and company events

We're not here to coast - we are building something exceptional. We're a lean team of ambitious people who push hard, move fast, and constantly raise the bar. The real perk is not standard benefits - it's joining 60 amazing people who challenge you to level up daily. If you're hungry, thrive under pressure and ready to go the extra mile, this is where you will accelerate your career faster than anywhere else.

Our Tech Stack
Our app is written in Flutter with Riverpod. Our Golang backend is powered by PostgreSQL and hosted on AWS with Kubernetes. Our AI stack consists of several LLM providers (OpenAI, Gemini, Anthropic, and Mistral), custom routing engines, and fine-tuned models. Our data stack consists of BigQuery and dbt.

How to apply

Ready to help build the AI learning unicorn?

Click "Apply for this job" and submit your CV and LinkedIn profile.

We encourage applications from exceptional talent regardless of traditional background requirements.

At Knowunity, we actively foster an inclusive and diverse workplace that ensures equal opportunity for all qualified applicants, regardless of nationality, ethnic or national origin, skin color, religion, sex, gender identity or expression, sexual orientation, physical or mental disability, or marital status. Please refrain from including your picture and age with the application.