Linnify is a global technology partner that helps visionary companies accelerate their digital development initiatives. With expertise in custom software and AI development, we’ve launched over 80 digital products across Europe and North America.
We’re looking for a Lead AI Engineer to drive the architecture, development, and deployment of cutting-edge AI systems, including agentic architectures, LLM orchestration, and fine-tuned models. You will lead technical strategy and execution for AI-powered products, mentor cross-functional teams, and collaborate closely with stakeholders to bring intelligent experiences into production.
This is a hybrid role based in Cluj-Napoca, blending deep work and on-site collaboration with passionate, product-first teams.
Job responsibilities
Architect and lead development of AI-powered applications, especially those using agentic and LLM-based architectures
Own and evolve end-to-end AI workflows, including RAG pipelines, prompt orchestration, tool usage, and safety layers
Design and implement multi-agent systems with planning, delegation, memory, and inter-agent communication
Oversee fine-tuning of foundational models for downstream tasks in various domains
Define and monitor evaluation strategies to assess model performance, consistency, and reliability in production
Lead implementation of prompt safety, content moderation, and guardrails across AI components
Guide the integration of OCR and data extraction flows to process unstructured data
Provide technical leadership across AI initiatives and mentor mid-level and junior engineers
Collaborate with product and design teams to shape scalable, production-ready ML solutions
Stay up to date with AI research and tools, balancing innovation with production readiness
Job qualifications
5+ years of hands-on experience in AI/ML engineering, with at least 2 years building agentic or generative AI applications
Proven experience leading complex AI initiatives in production, from architecture through deployment
Deep expertise with LangChain, LangGraph, or OpenAI Agents and agentic workflows
Strong understanding of foundation models, LLMs, and orchestration challenges
Hands-on experience designing and deploying Retrieval-Augmented Generation (RAG) systems
Experience with fine-tuning LLMs using supervised or reinforcement learning approaches
Strong understanding of vector search systems (e.g., Pinecone, Weaviate, FAISS, Qdrant)
Experience with evaluation pipelines and model monitoring in production environments
Excellent communication skills and ability to lead cross-functional technical discussions
Technical skills
Languages: Python (required), familiarity with JS/TypeScript is a plus
OCR / Extraction: Experience with document parsing and unstructured data pipelines
Professional skills
Leadership and mentoring mindset with technical authority
Clear decision-making under ambiguity, balancing research with pragmatic delivery
Systems thinker: can connect low-level tooling with product vision
Strong ownership and stakeholder collaboration
Fluent in English
What’s in it for you?
Impactful work: Contribute to meaningful, real-world products
Hybrid flexibility: Balance in-office synergy with remote deep work
Modern tech stack: Build with the latest tools in a forward-thinking environment
Top-tier gear: Receive your own MacBook for high-performance development
Continuous growth: Certifications, mentoring, and learning resources provided
Supportive team: Work with driven, thoughtful, and innovative people
Learning & Development
We’re committed to continuous growth. At Linnify, you’ll benefit from:
Access to role-specific certifications/courses
Regular team knowledge-sharing sessions and mentoring opportunities
Clear visibility into your progress and opportunities for advancement
Benefits
Flexible work schedule and remote work days
ESOP (Employee Stock Ownership Plan) so that you grow with us
Additional loyalty vacation days (up to 28 total vacation days based on experience and time with us)
Health package via Regina Maria Clinic
Meal tickets (40 RON/day)
Discounted gym subscription
About Linnify
Linnify is a global technology partner that helps visionary companies accelerate their digital development initiatives. With expertise in custom software and AI development, we’ve launched over 80 digital products across Europe and North America.
Our mission is to deliver exceptional value fast through technology. We work closely with our clients to build scalable, user-centered solutions that drive meaningful impact.
How to apply
Ready to lead the future of applied AI? Apply now and be part of something meaningful.
Linnify is an equal opportunities employer. We celebrate diversity and are committed to creating an environment where everyone thrives based on ability, potential, and passion.
Join us, shape the future, and grow alongside some of the brightest minds in Cluj-Napoca.
