Senior AI Engineer, Unzer
More information about location
1-5 days a week in office
All-in-one payment solutions
Be an early applicant
All-in-one payment solutions
501-1000 employees
Be an early applicant
More information about location
1-5 days a week in office
501-1000 employees
Company mission
We empower business owners to delight their customers with easy and seamless commerce, no matter where they shop or how they pay.
Role
Who you are
- 5+ years of Python experience focused on building robust, performant backend systems
- Hands-on with LLM frameworks (Hugging Face Transformers, LangChain) and vector databases (Pinecone, FAISS), plus experience fine-tuning models on custom data
- Solid understanding of prompt engineering techniques and retrieval-augmented generation workflows
- Proven track record deploying and operating scalable, secure services on AWS or equivalent cloud platforms
- Expertise with containerization and orchestration (Docker, Kubernetes) and serverless architectures
- Familiarity with MLOps tooling for model training, deployment, and monitoring (MLflow, Kubeflow, or similar)
- Skilled in CI/CD pipelines using GitHub Actions, Jenkins, or comparable tools
- Strong analytical mindset, excellent communication skills, and a natural ownership mentality, thriving in collaborative, fast-paced environments
What the job involves
- The AI Team advances intelligent automation through UnzerAI, our internal platform that helps employees, merchants, and partners discover and use information quickly and efficiently. By blending cutting-edge prompt engineering, vector search and fine-tuning, UnzerAI delivers accurate, context-aware responses with the performance, reliability, and compliance our business requires
- Design and implement scalable backend services and APIs that power document search, chat, and AI-driven workflows using microservices and REST
- Build and manage retrieval-augmented generation RAG pipelines, integrating vector databases such as Pinecone or Elasticsearch into our knowledge platform
- Integrate open-source and cloud-based language models into production, developing fine-tuning workflows on proprietary data to enhance relevance and reduce errors
- Own the full software development lifecycle, translate business requirements into design, write and test code, deploy using CI/CD and infrastructure as code, and monitor services in production
- Securely ingest and index internal knowledge bases such as Confluence, SharePoint, and document stores, implementing PII detection and redaction along with robust access controls
Application process
- Does it sound exciting? - Apply with your CV in English. Please don’t shy away if you don’t meet all the requirements! We’re looking forward to meeting you
- We will get back to you within 7 days from receiving your application
- The interview process includes a 30min intro call with a TA Partner, 90 min conversation with the technical team and a 45min call with your potential manager. Please note the process might alter depending on our team’s availability
Our take
Digitisation of payments systems has exploded in recent years. With the global digital payment market size expected to reach over $360 billion by 2030 thanks to the growth of cashless transactions, this is a market in which real opportunity is present. That being said, many SMEs can feel left behind when it comes to payment tech. This is what Unzer (formerly Tillhub) wants to solve.
Its product is a smart all-in-one till which offers features ranging from handling payments to merchandise management. In short, it wants to bring enterprise-level products into the SME market, disrupting an industry that has traditionally lagged behind on the tech curve. However, while Unzer's product is aimed at SMEs, it is also feature-rich and scalable enough to compete with enterprise payment processors. This means Unzer has an extremely large addressable market. It currently has over 70,000 merchants using the platform, including Redbull, FC St. Paul, and WESTbahn.
The company has been focusing on further market expansion and developing its product line, adding a mobile checkout function and a buy now, pay later option for its customers. While this brings it into direct competition with Klarna, Paypal and Clearpay to name a few, Unzer believes its white-label solution sets it apart, allowing its customers to build brand loyalty without the distraction of a third-party processor's branding. Moving forward and off the back of a partnership with Mastercard, it aims to be at the forefront of responsible and compliant instalment purchases in the DACH region and beyond.
Steph
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (last 2 of 3 rounds)
Apr 2018
$4.6m
SERIES A
Jul 2017
$2.3m
SEED
Total funding: $8.1m
Company benefits
- Flexible working hours
- A hybrid work model allows you to keep work-life balance – you can work from home up to 80% of the time
- A learning budget for personal development in addition to internal knowledge-sharing forums and best practice sharing. We want you to have the ability to learn something new every day!
- A fast-paced work environment with the creative freedom to contribute to Unzer’s future
- Excellent working atmosphere in ambitious, diverse, and agile teams
Company HQ
Kreuzberg, Berlin, Germany
Leadership
Oliver Mickler
(Senior Vice President)Background in energy and banking, and is also the founder and ex-MD of myDriver.com.
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