Senior Backend API Engineer | Rust & Python (m/f/d) | Legal AI Tech Start-up | Full Remote

Permanent employee, Full-time · Berlin, Mobile/Hybrid

Our offer for you

As a Senior Backend Engineer (m/f/d) you will play a vital role in developing Xayn’s privacy-first Legal AI solution helping professionals in the law research and advising domain. You’ll build scalable, high-performance backend services while working closely with AI researchers and engineers to implement cutting-edge features and optimize system performance.

YOUR TEAM

The Tech team consists of around 10 individuals who work remotely or at the office in Berlin city center. Besides the development team, Xayn’s technical lead and an external consultant team handle various tasks related to providing Xayn’s development team with the necessary technical environment, ensuring the smooth operation and scalability of Xayn’s AI applications.

YOUR HIRING MANAGER

Simon is heading the Tech Team (Development, Infrastructure). With more than 15 years of experience in software development, he is an advocate for product driven development, solving real life problems.

BENEFITS

Working hours: Flexible working hours: Full-time (32- 40h/week).
Vacation: 26 days + December 24th & 31st off
Remote: 100% remote work possible (given a German residence), other countries upon request
Discounts: e.g. Urban Sports Club Membership
Equipment: Laptop (Lenovo or Mac), second screen, keyboard etc.

Your responsibilities

Develop and maintain scalable backend services using Rust, focusing on the core APIs that handle the heavy lifting for Xayn’s Noxtua platform
Design, develop, and deploy secure and robust APIs with a focus on scalability, stability, and security for customer-facing services
Manage Service and Tenant APIs using Python, including tenant creation, administration, and rights management for efficient customer operations
Integrate AI libraries primarily in Python, implementing features close to LLMs (Large Language Models) and supporting AI-related API development
Optimize algorithms and system performance to ensure speed, scalability, and overall system reliability across the platform
Contribute to platform development with a focus on security and stability while designing and deploying new APIs for AI-driven features
Collaborate with AI Engineers, DevOps, and Frontend Developers to implement solutions effectively and ensure seamless integration across teams

Our Tech Stack

Programming: Rust, Python
Infrastructure: AWS, Docker, Kubernetes
Database: e.g. PostgreSQL & Redis
Version Control: GitHub
CI/CD System: GitHub Actions
Ticket System: Atlassian JIRA
Documentation: Confluence
Communication: Slack
Office Application: MS365

About you

Working Permission: Germany
Language: English (fluent)
Strong proficiency in Rust and Python, with at least 2 years of Rust experience, including API development (e.g. with Tokio) and applying OpenAPI standards
Expertise in backend development, including database integration (PostgreSQL), Docker containerization, and security practices like OAuth and secure coding
Solid understanding of system architecture, with experience in microservices, scalable deployments using Kubernetes, and network architecture fundamentals
Strong problem-solving and algorithmic skills, with a clean code approach and a focus on performance optimization
Test-driven development mindset, with proven experience in extending Python projects, ensuring type-safe coding practices, and efficient collaboration within cross-functional teams

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About us

The AI Startup Xayn develops Noxtua, Europe's leading sovereign Legal AI. The legally compliant and competent AI helps legal professionals to research legal issues and review, and draft legal documents. The GDPR-compliant Legal AI meets the high professional and data protection requirements for lawyers (§ 203 Penal Code, § 43e Federal Lawyers' Act) and is certified according to ISO 27001, 9001, 27018, 27017, 42001, and BSI C5. The product version Beck-Noxtua is based on the exclusive data of Germany’s leading legal publisher C.H.Beck and Germany’s largest business law firm CMS.

Emerging from a 2017 research project by Dr. Leif-Nissen Lundbæk and Professor Dr. Michael Huth at Oxford University and Imperial College London, the Berlin-based Legal-Tech company, formerly known as Xayn, boasts extensive experience in developing highly efficient GDPR-compliant AI solutions. Strategic partners, including Germany's leading legal publisher C.H.Beck, the High-Performance Computing specialist Northern Data, Germany's largest business law firm and co-initiator of the Legal AI Noxtua CMS, as well as the world's largest law firm Dentons, have invested a total of € 80.7 million in the German startup as part of its Series B funding round.

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Your application!

We appreciate your interest in Xayn AG. Please fill in the following short form. Should you have any difficulties in uploading your files, please contact us by mail at jobs@xayn.com.