Senior AI Engineer (Python)

Our client has been into AI before it was cool and has gathered tons of research knowledge on AI, LLMs, RAGs being a personal research assistant to a solid client base. As part of their growth, they are looking for a Senior AI Engineer to join their team.

Tech stack:

Service-oriented architecture, microservices;

PostgreSQL, Non-relational and vector DBs (Elasticsearch/ OpenSearch, ChromaDB, CouchBase);

Python, Django/Flask;

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

GenAI (Windsurf, Cursor, Amazon Q, Claude and others);

AWS;

Docker, K8s.

Hands-on development responsibilities:

Own the full development lifecycle - from idea to architecture, implementation, testing, and delivery of real-world AI products.

Design and build robust AI systems, including Retrieval-Augmented Generation (RAG) pipelines and LLM Evaluation Frameworks.

Drive innovation by testing new approaches and bringing new AI research into production.

Work closely with researchers, product managers, and fellow engineers to shape and ship powerful features.

Build systems for performance and reliability, ensuring they are scalable, testable, and maintainable.

Contribute to a global mission to transform how the world interacts with scientific knowledge and applied AI.

Requirements:

5+ years in software development, including 3+ years with Python.

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

Familiarity with ML systems or motivation to learn in depth.

Proficiency in English.

Considered as a big plus:

Degree in Computes Science or a 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.

In Return, They Offer:

A job with a global mission to advance Science.

Annual Salary Review.

Share incentivization plan

30 days vacation.

Flexible work hours.

Remote-first policy with hybrid options for Sofia, Bulgaria.

Personal equipment reimbursement program.

Free MultiSport card.

Private Health Insurance - premium package.

Career Enhancement plan.

Workshops, Conferences, Hackatons, Tech Deep Dives (internal & external).

Let's chat whenever at [email protected]

(No. 2709 from 17.01.2019)