Senior Python Engineer

Ciklum is looking for a Senior Python Engineer to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

We are partnering with Client to significantly upgrade the Retrieval-Augmented Generation (RAG) architecture of their AS Copilot system. Our goal is to drastically reduce AI hallucinations in code generation and optimize retrieval latency without re-architecting their existing platform.

Responsibilities:

• Lead the architectural bridge between evaluation and implementation for the AS Copilot RAG pipeline
• Drive the tuning of re-rankers, lead grounding and citation efforts, and supervise mid-level ML engineers
• Contribute to custom "Code-RAG" development, specifically handling AST-aware semantic chunking for industrial automation code
• Ensure all AI components are delivered securely as Python source code directly into the client’s Azure DevOps environment
• Pipeline Audit & Evaluation: Conduct RAG pipeline audits, establish baseline KPIs, and build robust evaluation frameworks using tools like RAGAS
• Advanced Retrieval & Grounding: Tune cross-encoder rerankers on Azure ML and lead the implementation of multi-turn grounding and claim-level citation frameworks
• Code-RAG Implementation: Develop custom tokenization and semantic chunking strategies for IEC 61131-3 structured text, avoiding generic tokenizers that destroy function block semantics
• Code Quality & Mentorship: Write clean, production-grade Python code, conduct thorough PR code reviews, and provide technical supervision to mid-level implementation engineers
• Agile Collaboration: Work directly within the client's SAFe cadence, actively participating in joint architectural decisions and continuous knowledge transfer

Requirements:

• Background: Strong background in Computer Science, Machine Learning, Data Science, or a related technical field
• AI/NLP Expertise: Deep, practical experience with Large Language Models (LLMs) and advanced Retrieval-Augmented Generation (RAG) architectures
• Technical Stack: Highly proficient in Python. Experience with PostgreSQL, pgvector, and hybrid search strategies (BM25 + dense) is required
• Cloud & MLOps: Hands-on experience with the Azure ecosystem, specifically Azure OpenAI, Azure Machine Learning, and Azure DevOps
• Evaluation Frameworks: Familiarity with LLM evaluation methodologies and tools like RAGAS, DeepEval, or custom Python test harnesses
• Code Parsing (Bonus): Exposure to Abstract Syntax Trees (AST) or custom grammar parsing for code-generation use cases is highly desirable
• Soft Skills: Effective problem-solving mindset, capable of client-facing technical leadership, and comfortable working in an embedded, co-delivery partnership

What`s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy flexibility – full remote working possibilities
• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn.

Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

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