Iris.ai is a pioneering AI-first company on a mission to transform how humans discover and apply knowledge. For over a decade, we’ve built intelligent systems that empower researchers, engineers, and product teams to work faster and more precisely with scientific and technical data.

Our product suite — Neuralith, Axion, and RSpace — supports end-to-end AI development, from data orchestration and retrieval to LLM evaluation and deployment. At the core of our work are Retrieval-Augmented Generation (RAG) pipelines, LLM Evaluation Frameworks, and intelligent AI Agents that bring context-awareness, accuracy, and task-level reasoning to applied AI.

Backed by the European Innovation Council (EIC) and trusted by leading R&D teams across industries, we turn advanced AI research into real-world tools that help organizations solve high-impact problems.

Opportunity:

We are looking for a Lead AI Engineer to take a key role in guiding the development of our AI products and platform. This is a senior technical position combining deep engineering expertise with leadership. You will contribute hands‑on to our Python-based AI stack while mentoring engineers, shaping architecture, and ensuring that ideas move rapidly from concept to production.

As Lead AI Engineer you will lead a small, talented engineering team building advanced AI products. You will collaborate with product managers and researchers to align technical decisions with business goals, drive innovation, resolve blockers, and foster a culture of knowledge sharing. You will guide architectural decisions, maintain high technical standards, while coding side-by-side with the team mates.

Key Technologies:

• Python & Django

• Relational databases (PostgreSQL)

• Non-relational and vector databases (Elasticsearch / OpenSearch, ChromaDB, Couchbase)

• AI / ML / NLP libraries (Gensim, Torch, Transformers, spaCy, Autogen, etc.)

• Cloud (AWS)

• GenAI tools (Windsurf, Cursor, Amazon Q, Claude and other)

• Git & CI / CD
  

WHAT YOU’LL DO:

• Design, implement and deliver scalable AI-driven software systems using Python.

• Drive innovation: research, test and adopt new technologies to enhance development productivity.

• Collaborate with cross-functional teams to define, design, and ship new features.

• Participate in the full development cycle from specification to deployment.

• Provide technical guidance and mentorship to team members, ensuring code quality and best practices.

• Guide architectural decisions and ensure alignment with product strategy.

• Participate in hiring, onboarding and performance reviews of engineers.

What you need:

• 2+ years of leadership or team management experience (Tech Lead, Team Lead, Engineering Manager, etc.).

• At least 7 years of experience in software development.

• Minimum 3 years of professional Python experience.

• Solid experience in web backends (Django/Flask), REST APIs, databases, and cloud infrastructure

• Familiarity with ML systems or motivation to learn in depth

• Strong knowledge of architectural and software design patterns.

• Bachelor’s degree in Computer Science, Software Engineering or similar.

• Ability to teach and transfer knowledge to others.

• Proficient analytical and problem-solving skills.

• Fluent English.

Any of these is an advantage:

• Masters degree in Computer Science or related field

• Previous work with LLMs, NLP, or AI model evaluation

• Experience contributing to or using RAG systems in production

• Open-source contributions, academic research, or mentoring

LIFE AT IRIS OFFERS:

🌍 Impact

• Build responsible AI that shapes the future of science and tech

• Join a sharp, versatile team of ambitious builders

• Thrive in a flat structure with no corporate hierarchy, where every voice matters
  
  

💸 Compensation

• Competitive salary with annual reviews

• Stock options to share in our long-term success

🌍Work Your Way

• 30 days annual paid vacation + bonus days

• Flexible work hours

• Flexible work location - You choose where to work from

• Hybrid model or 100% remote work - You want it? - You have it!

• Regular Team building activities and travels

• Seasonal Working Camps (summer / winter)

• Personalized Work Equipment Allowance - choose your own Gear

🚀 Grow With Us

• Learning & Development Allowance - we will sponsor you to Join global conferences or take upskilling courses

• Career Enhancement Plan

• New technologies introduction & testing opportunities

• Knowledge transfer, Work buddies, PairCoding, Mentorship opportunities, weekly Tech Deep Dives

• Workshops, Conferences, Hackathons

• Freedom to bring innovation and your ideas to life

🎁 Wellbeing & Perks

• Free MultiSport card

• Cool Sofia office in a central location

• Private Health Insurance - Premium package

• Bi-annual health checks

• Charity and volunteer activities