Senior Backend Engineer AI Applications (m/f/d)

About the Position

About turnus.ai

At turnus.ai, we are redefining how suppliers meet the compliance requirements of their business customers. Our mission is to put the tedious and error-prone communication of compliance data on autopilot. OurAI systems handle the manual and repetitive tasks for our customers, allowing them to focus on their core business.
Our engineering team is at the heart of this mission. We are building a forward-thinking platform that doesn\’t just process data, but learns, anticipates, and automates. If you want to thrive in a dynamic,tech-driven environment and help shape a product that makes a real difference, you\’ve come to the right place.

The Role
We are looking for a visionary Senior Backend Engineer (m/f/d) with a passion forartificial intelligence and a drive to solve complex problems. You will play a pivotal role in developing an intelligent infrastructure that automatically aggregates data from diverse sources to accurately answer compliance questions. We’re focusing on practical implementation over lengthy planning cycles. We value engineers who can balance speed with quality and take ownership of their work. You will fundamentally shape the architecture of our AI applications, enhance our models, and build scalable integrations that guarantee a seamless service for our customers. Your work will directly contribute to transforming an entire industry.

Requirements

• Excellent Backend Expertise: Deep, hands-on experience in backend development, ideally with Python or TypeScript/Node.js. You write clean, maintainable, and well- tested code.

• Strong implementation focus: You prefer writing code to lengthy discussions and can quickly turn ideas into working prototypes

• Solid AI/MLexperience: Hands-on experience with LangChain,RAG systems, and productionLLM deployments

• Data and API Proficiency: You are skilled in designingand developing APIs (FastAPI, REST) and have experience with data aggregation, ETL processes, or data pipelines.

• Architectural Mindset:You have a strong understanding of cloud architectures (e.g., GCP, AWS) and microservices, and you know how to design scalable and resilient systems.

• SaaS Experience: You have worked on B2B SaaS applications and understand the associated challenges regarding security, multi-tenancy, and scalability.

• \“You build it, you run it\“ Mentality: You take ownership of your work, act proactively, and have the drive to develop features to perfection and deploy them successfully.

• Fluent in English: Our company language is English to ensure seamless communication within the team. German language skills are a plus but not required.

• Techstack
  Backend: Python, FastAPI, Docker, AWS Lambda
  Frontend: React, TypeScript, Tailwind
  AI/ML: LangChain, GenAI, RAG, Ragas, PyTorch/Tensorflow
  Database: Postgres, OpenSearch
  Cloud: AWS
  DevOps: GitHub Actions, AWS CDK/Cloudformation

Your tasks

• Architect, Build and iteratequickly: Develop features and proof-of-concepts using Python/FastAPI, test with real users, and scale what works

• Enhance Our AI Models: Collaborate closely with our AI specialists to continuously improve and fine-tune our models (especially LLMs) through smart data engineering, GenAI Evaluation techniques and feedback loops.

• BuildScalable Integrations: Design and implement secure, scalable APIs and integrations with third-party systems (e.g., ERPs, PIMs, customer platforms) to ensure a seamless flow of data.

• Ship features end-to-end: From initial prototype to production deployment using AWS CDK/CloudFormation and GitHub Actions

• Ensure Scalability and Performance: Take ownership of the backend architecture, ensuring our AI applications remain performant and secure as data volumes and user numbers grow.

• Collaborate on Product Innovation: Work closely with product management and the frontend team to bring innovative, AI-powered features from idea to production and help shape the technical roadmap.

What you can expect

• Competitive Salary & Equity: Your contribution will be rewarded fairly, and you will participate directly in turnus.ai\’s success through equity options

• Flexibility & Remote Culture:Work fully remote (within CET +/- 2 hours timezone)

• Impact & Ownership:Shape a core product from the ground up and see the direct
  impact of your work on our customers and the market.

• Growth & Learning:We support your professional development with a generous budget for conferences, courses, or books.

• Dynamic Team: Become part of a highly motivated team that is passionate about its mission and fosters a culture of open exchange and collaboration.

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