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Senior AI/ML Developer – Conversational AI (f/m/x)
  • Łódź
Senior AI/ML Developer – Conversational AI (f/m/x)
Łódź, Łódź, Łódź Voivodeship, Polska
Sii Sp. z o.o.
6. 3. 2026
Informacje o stanowisku

technologies-expected :


  • Python
  • Machine Learning
  • Rasa
  • DialogFlow
  • Luis
  • CI/CD
  • Docker
  • Monitoring Systems

technologies-optional :


  • Kubernetes
  • Cloud Computing
  • Elasticsearch
  • testing frameworks
  • Analytics platforms

about-project :


  • We are looking for a Senior AI/ML Developer experienced in building and maintaining conversational AI solutions to join our project delivered for an international organization recognized for its large-scale digital transformation initiatives. You will work on enhancing existing chatbot platforms, improving NLU performance, designing scalable architectures, and leading technical activities within the team.
  • The role involves close cooperation with DevOps, Data, and Product teams and offers the opportunity to leverage Sii’s learning ecosystem, including certifications, mentoring, and access to strategic cloud partnerships.
  • Apply today and let us match you with the best-fitting project!

responsibilities :


  • Design, develop, deploy, and maintain conversational AI solutions with a focus on quality, scalability, and reliability
  • Conduct root cause analysis, implement bug fixes, and deliver enhancements across existing AI/ML systems
  • Optimize NLU models through tuning of utterances, intents, and entities, while monitoring bot performance in production
  • Create and maintain technical architecture documentation, conversational flows, integrations, and diagrams
  • Lead development activities, support UAT, mentor developers, and translate high-level designs into actionable tasks

requirements-expected :


  • At least 5 years of experience in AI/ML engineering, NLP/NLU development, or conversational AI
  • Strong hands-on experience in Python and modern NLU/NLP frameworks
  • Practical understanding of DevOps practices, CI/CD pipelines, monitoring, and logging
  • Ability to troubleshoot complex system issues and work with analytics dashboards
  • Very good English skills (B2/C1), enabling effective communication in an international environment
  • Fluent Polish required
  • Residing in Poland required

offered :


  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

  • Praca Łódź
  • Łódź - Oferty pracy w okolicznych lokalizacjach


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