Senior Machine Learning Engineer

Be part of the revolution. Join the AI team in one of Europe's fastest growing deep tech companies and get the opportunity to be part of our amazing journey! 🚀
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ABOUT ULTIMATE.AI is Europe’s leading customer service automation platform. We help businesses scale their customer service with artificial intelligence. helps agents work faster and smarter, not harder, by providing them AI tools that augment their workflows. For our enterprise clients, we deliver exceptional customer experiences at lower costs. For the agents, we improve job satisfaction and provide freedom to focus on what really matters: the customer.

Our technology is market leading. We are a small team - based across Helsinki and Berlin - with a big vision and are growing rapidly. We’re backed by Techstars and some of Europe's biggest name VCs. We’re proven; we’ve won major enterprise clients and are focusing heavily on our European expansion. This is an exciting opportunity to join a fast-growing startup at the get-go.


We want to transform how tens of millions of people work in customer service. So, we need a team of world-class talent. As a Machine Learning Engineer at, you’re at the heart of our ambitious growth plans. You’ll be an integral part of the Company from Day 1.

The core of your role is designing and developing our machine learning system, which drives our conversational software. You’ll be foundational in applying and iterating the latest research in machine learning, deep learning and NLP. The goal: to build the world’s best customer service automation platform, which empowers businesses to deliver exceptional customer experiences at scale and in all languages. 

You will brainstorm and build with our AI, product and engineering teams. You are naturally analytical and confidently develop and improve complex neural network architectures. Growth, innovation, and tough problems excite you. You are driven by deploying AI technologies to solve real world problems and keep abreast of developments in the field. Finally, you thrive in an agile and creative environment and can work closely with all cross-functional teams to achieve your goals. 

Key responsibilities:

  • Maintaining and developing our core AI technologies which support millions of conversations every month, using Python, Scipy and TensorFlow.
  • Enhance the performance and capabilities of our core NLP.
  • Explore, experiment and deploy advanced capabilities: such as deep learning, NLP and NLG, context management, new data pipelines and autonomous learning through feedback loops.
  • Designing and conducting experiments that bring us closer to our vision.
  • Staying abreast of the latest research literature and bringing relevant insights back to the product.
  • Working closely with all members of the team to build, test and iterate quickly, with direct guidance from our Chief Science Officer.


We are looking for someone passionate about finding logical solutions to complex problems, who has a deep interest in machine learning and is comfortable with the mathematics behind it. At we are pushing the boundaries in what applied conversational AI can do, and so we need all hands on deck. You enjoy brainstorming with teammates to discover innovative solutions to build and iterate rapidly. 

Ideal qualifications:

  • Quantitative or technical degree, e.g. Computer Science, Machine Learning, Physics, Mathematics, Engineering, etc. 
  • 4+ years’ experience writing robust code and unit tests for live production systems and working with large datasets
  • 2+ years’ of relevant experience in building large scale machine learning or deep learning models in Python, Tensorflow (or other deep learning frameworks) and Python’s data stack (NumPy, SKLearn, Pandas, etc).
  • You have experience building complex neural network architectures and are on good terms with natural language processing. Unsupervised and semi-supervised learning skills are highly appreciated as is experience on serving neural networks in real life production environments.
  • You are able to implement ideas from research literature into your models. 
  • Huge bonus if you have experience shipping conversational AI solutions.
  • Positive, pro-active team player who is passionate about their craft, is keen to take part in product discussions and cares about helping the team deliver.
  • Good communication skills, high proficiency in English.

Or, know someone who would be a perfect fit? Let them know!

Lappviksgatan 16
00180 Helsingfors Directions View page


Ritterstraße 12
10969 Berlin Directions View page

We've got you covered

  • Great Compensation

    You bring your best and so do we. We reward people for their impact on the long-term growth of the company.

  • We Trust You

    We trust you to be brilliant and empower you to achieve your goals. You own your methods, we share our results.

  • Stock Options

    If we succeed, everyone gets to share in the upside. Join our journey into a billion-dollar company and reap the rewards.

  • Personal Development

    We want to grow, together. You get €1000 per year Personal Development budget to spend on activities that help you succeed.

  • Free Snacks

    It's hard to think on an empty stomach. Our fridge stays well-stocked so you can focus on what you do best.

  • Office Dogs

    Our office dogs are endless balls of positivity. Got a break in between calls? Play fetch! Have a dog of your own? Bring it in to join the fun.

  • Great Location

    Whether its in Helsinki's Startupland or the heart of East Berlin, our offices are at the center of two of Europe's coolest cities.

  • Team Lunches

    Those who eat together stay together. Our regular team lunches are a time to wind down and get to know each other.

  • Flexible Working

    We hire great people and we trust them to own their impact. You know how you work best. Earlybird or remote worker; we let you manage your time.

  • Company Offsites

    We take having fun seriously and our company offsites are legendary. We celebrate our successes as a global team.

  • 360 Health Insurance Cover

    Your health and wellbeing is important to us. We offer extensive healthcare coverage to our team to make sure you're looked after.

  • Monday Breakfasts

    We kickstart every Monday with a team breakfast, made by one of us. We use the time to catch up and get pumped for the week ahead.

We're smart, hungry and mission-driven about changing the world. Great culture is core to that - because we believe people are more inventive when inspired, more productive when passionate and more resourceful when recognised.

We trust our people to be brilliant and empower them to own their impact. Join our team and work alongside some of the smartest people we know. 


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