Senior ML Engineer: Scale Production AI + ESOP

Cogita; Warszawa; Hybrid; Full time

Job description

Build production-grade AI systems - from MVP to large-scale deployment

We are looking for a Senior ML Engineer who wants to build real-world AI systems - from early prototypes to scalable, production-ready solutions used by thousands of users.

At COGITA, you will work on ambitious AI projects for enterprise clients, combining applied research with robust engineering and real business impact.

Your Role

As a Senior ML Engineer, you will play a key role in designing, building, and scaling AI systems. Your responsibilities will include:

• Developing agent-based AI systems for complex, real-world use cases
• Integrating ML solutions with analytical platforms and clients’ internal APIs
• Experimenting with ML and LLM models, including tuning, benchmarking, quality evaluation, and hallucination reduction
• Designing and deploying RAG pipelines tailored to enterprise data and workflows
• Co-creating analytical and decision-support tools that automate and improve business processes

You will work closely with other senior engineers, researchers, and project leads, taking ownership of both technical quality and delivery.

How We Work

At COGITA, we focus on long-term collaboration and continuous growth.
We carefully select projects to ensure they are technically challenging, meaningful, and aligned with the development goals of our team.

Our project portfolio is broad, but always AI-focused.
In one project, you may work on advanced prompt engineering and LLM-based systems; in another, you may design MLOps pipelines for real-time, mission-critical environments.

This variety allows you to grow across multiple dimensions of modern AI engineering.

Requirements

• At least 5 years of hands-on experience in Machine Learning or applied AI
• Proven experience deploying ML / AI systems to production
• Participation in at least 3 projects involving Large Language Models (LLMs)
• Strong software engineering mindset and experience working with real-world data
• Ability to work independently and take ownership of complex technical challenges

What We Offer

• Attractive compensation: 25,000–35,000 PLN/month + VAT (B2B), depending on experience
• International enterprise projects
• An engaged team with a strong engineering culture
• Long-term cooperation and real influence on technical decisions
• Attractive ESOP - a meaningful equity participation program for long-term contributors who want to grow with the company and share in its success

If you want to build AI systems that go beyond demos - and work with a team that values responsibility, clarity, and real impact - we’d be happy to talk.

Apply for Senior ML Engineer

Remote

Netherlands +31

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Why work with us?

Where research-level thinking meets production-grade impact.

At COGITA AI, you work on problems that matter - inside a team that has the depth to solve them. No endless pilots. No inflated job titles. Just rigorous engineering, strong science, and AI systems that actually reach production.

Learn from people who've done it at Google, Oracle, and in academic research.

Your colleagues include ex-Google engineers, university professors with 80+ scientific publications, and consultants behind 200+ AI deployments. You won't outgrow this team fast - you'll grow because of it.

Work on AI that ships - not AI that gets demoed and shelved.

We own the full lifecycle: from data readiness and architecture, through modelling, all the way to production deployment and long-term support. You build complete systems. You see the impact.

Stay close to the frontier — without leaving the industry.

Our roots at the University of Warsaw - the academic home of talent behind OpenAI and xAI - give you early access to emerging research and exceptional peers. You get the intellectual rigor of academia with the accountability of enterprise delivery.