Principal/Senior/Mid – AI/ML Engineer
AI/ML engineer role (Mid/Senior/Principal) at Principal33 to build and scale the AI/ML infrastructure and pipelines powering client Aily Labs' decision intelligence platform, based in Cluj-Napoca. Core stack includes Python, FastAPI, AWS, Docker, Kubernetes, Airflow and CI/CD, with leadership duties at higher levels.
- Compensation
- Not disclosed
- Location
- Cluj-Napoca
- Work setup
- Not specified
- Seniority
- Principal
- Employment
- Not specified
- Experience
- 4+ years
- Category
- Ml / AI
- Posted
Skills
Must have
- 4+ years of experience (Senior AI/ML Engineer)
- 6+ years of experience (Principal AI/ML Engineer)
- Strong software engineering practices
- Deep AI/ML knowledge
- Outstanding problem-solving skills
- Ability and willingness to lead and mentor
- Own complex projects and lead technical initiatives from design to implementation (Senior+)
- Mastery of the modern AI/ML stack: AWS, FastAPI, Docker, K8s, Python, CI/CD, Airflow, agentic coding, concurrency
- Able to lead multiple technical initiatives in parallel (Principal)
- Lead a team of 4+ AI/ML Engineers and own their roadmap (Principal)
Nice to have
- Impact-driven; thrives at the intersection of AI, business, ML engineering, and product
- Startup mindset: comfortable with ambiguity, proactive, hands-on
- Strong collaborator who can explain trade-offs and designs in simple terms
Full description
Mission
Are you ready to take part in the upcoming AI revolution of the business world? If the answer is a resounding "yes," we have an extraordinary opportunity for you!
About the Role
We are looking for AI/ML Engineers who are passionate about the power of AI and love building robust AI/ML systems: people who turn models into reliable, scalable products, and ensure our AI solutions are production-ready, efficient and impactful. Your job is to build and scale the AI/ML infrastructure and pipelines that power Aily's decision intelligence platform.
About this Team - AI Platform
The AI Platform team is the backbone of client's decision intelligence.They design, build, and operate libraries, tools, and the shared AI/ML infrastructure that enables AI & Data teams to empower business-critical decision-making for their enterprise users.
Core Responsibilities (by seniority)Senior AI/ML Engineer - 4+ years of experience
- All of the above +
- Own complex projects, lead technical initiatives from design to implementation (refactoring, standardization)
- Ensure the quality of your own and your teams' developments
- Interact with other functions and agree on exchange protocols and architecture design (DevOps, Front End, Data Engineering, Back End, ...)
- Sponsor the creation and implementation of new software and ML standards in the AI team
- Requirements: Strong software engineering practices, deep AI/ML knowledge, outstanding problem-solving skills, ability and willingness to lead and mentor
Principal AI/ML Engineer - 6+ years of experience
- All of the above +
- Shape AI Platform strategy across teams and be a technical reference for the AI team
- Lead cross-team design sessions, define, enforce, and maintain org-wide standards
- "Make things happen" at scale, manage leadership pressure
- Lead a team of 4+ AI/ML Engineers and own their roadmap
- Requirements: Driven by impact and value, able to lead multiple technical initiatives in parallel, mastery in the modern AI/ML stack (AWS, FastAPI, Docker, K8s, Python, CI/CD, Airflow, Agentic coding, concurrency, etc)
Who We're Looking For
- You are impact-driven and thrive at the intersection of AI, business, ML engineering, and product
- You want to build real systems that power decision-making at scale
- A builder: you enjoy shipping reliable solutions, improving systems and tooling, and making things work in production at scale
- A strong collaborator who enjoys working with Data Scientists, Product Managers, and Engineers, and can explain trade-offs and designs in simple terms
- Someone with a startup mindset: comfortable with ambiguity, proactive, hands-on, and willing to improve things beyond your immediate scope