Senior AI/ML Developer – Conversational AI (f/m/x)

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!

Your tasks

• 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

• 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

What we offer

• 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

• 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

If you want to work on systems with high operational significance — apply now!