Experienced Full Stack AI Chat Assistant & Knowledge Engineering Intern – Cybersecurity Scale-up

Are you an ambitious and innovative individual with a passion for AI, cybersecurity, and knowledge engineering? Do you thrive in fast-paced environments and enjoy collaborating with cross-functional teams? We're seeking an exceptional Full Stack AI Chat Assistant & Knowledge Engineering Intern to at blithequark, a leading cybersecurity scale-up with Swiss roots. About blithequark: blithequark is a pioneering cybersecurity scale-up that empowers enterprises to protect their IT, OT, and IoT networks with unmatched speed and accuracy. Our flagship solution, blithequark.NDR, is a cutting-edge AI-driven security analytics platform that monitors, detects, and responds to threats in real-time. Born from ETH Zurich innovation, we combine Swiss excellence with a flexible, remote-first, and collaborative culture that supports passionate professionals in solving cybersecurity challenges and driving continuous innovation. Your Role: As a Full Stack AI Chat Assistant & Knowledge Engineering Intern at blithequark, you will play a crucial role in designing, building, evaluating, and continuously improving our internal AI assistant that supports engineers, security analysts, and business stakeholders. You will also take the lead in organizing and transforming our internal documentation into structured, machine-consumable knowledge assets that power high-quality responses. You will work closely with a blithequark mentor in the field of AI and collaborate with subject matter experts across Security Engineering, Product, Customer Success, and Technical Writing. Key Responsibilities: * AI Chat Assistant Development (≈50%): + Extend and refine blithequark's internal LLM-powered assistant (initially for internal use; potential future externalization). + Build and iterate on a retrieval-augmented generation (RAG) stack: document ingestion, chunking, embeddings, vector search, ranking, answer synthesis. + Design and run offline & human-in-the-loop evaluation experiments (precision/recall of retrieval, response helpfulness, hallucination rate, latency & cost metrics). * Knowledgebase & Documentation Engineering (≈50%): + Add missing technical content to the existing guides relevant for improving the LLM's accuracy and ability to reason about the content. + Rewrite or refactor technical material for clarity, consistency, and LLM-friendly structure (FAQ patterns, Q&A primitives, procedure steps). + Contribution guidelines: Draft lightweight authoring standards so ongoing documentation remains assistant-ready and user-friendly. What You Can Expect from Us: * An innovative scale-up environment with leading-edge security software and a fast-growing European presence. * Autonomy, flexibility (remote options), and trust, empowering you to shape your role and contributions. * Hands-on collaboration with Security Experts, Data Scientists, and Business Professionals from across Europe. * Clear growth opportunities and support for personal and professional development. * Open, diverse, and inclusive culture committed to independent thinking and work-life balance. Requirements: * We are looking for a proactive, self-motivated, and enthusiastic AI enthusiast who is comfortable in a high-paced start-up environment and who shares our values. * Certain requirements and skills to establish a good person-job-fit: + An enthusiastic student who enjoys research, has strong communication skills, and the ability to work independently and proactively. + Currently pursuing or holding a Bachelor's or Master's degree in Computer Science, AI, Data Science, or a related field. + Ability to reorganize messy information into structured, navigable, well-labelled content. + Strong written communication in English; clear, concise, audience-aware writing. + Proficiency in Python and experience with at least one AI/LLM application framework such as LangChain, Haystack, Semantic Kernel, etc. or strong willingness and demonstrated capacity to learn quickly. + Strong interest in cybersecurity. + Basic understanding of embeddings, vector databases, or information retrieval concepts. + Strong analytical and problem-solving skills with an interest in technical and organizational innovation. + Comfortable using Git/GitHub/GitLab for collaborative development. Why Join blithequark? At blithequark, we offer a unique opportunity to work with a talented team of professionals who are passionate about cybersecurity and AI. Our remote-first culture allows you to work from anywhere, and our flexible work arrangements enable you to balance your work and personal life. We also offer clear growth opportunities and support for personal and professional development, so you can grow with us and achieve your career goals. : If you're an ambitious and innovative individual with a passion for AI, cybersecurity, and knowledge engineering, we encourage you to apply for this exciting opportunity. Please through our website including your resume, cover letter, and any relevant projects or portfolios. We can't wait to hear from you!