Senior AI/ML Engineer (f/m/x)

Sii Poland; Łódź; Remote; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Contracts with the biggest brands

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

Medical care

Job summary

Sii Poland is seeking an experienced AI/ML Engineer to join our team on a remote basis. You will build agent tools, define schemas, and ensure smooth integration with the Semantic Retriever, enabling robust multi-agent workflows.

You will implement complex prompts, develop structured LLM outputs, and write comprehensive unit tests while collaborating with other experts. Polish residency is required and English must be advanced.

Qualifications

• Minimum 5 years of experience in software engineering or AI/ML.
• Strong proficiency in Python and experience with Pydantic schema development.
• Expertise in API orchestration and tool architecture.
• Practical knowledge of LangGraph and experience with semantic retrieval integration.
• Ability to implement complex prompts and generate structured LLM outputs.
• Advanced level of English.
• Residing in Poland required.

Responsibilities

• Building and developing tools for AI agents and defining their schemas.
• Ensuring seamless integration with the Semantic Retriever.
• Deploying and configuring structured interfaces for multi-agent workflows.
• Implementing complex prompts and generating structured LLM outputs.
• Writing comprehensive unit tests for all developed solutions.

Skills

Python

Pydantic

API orchestration

LangGraph

Semantic retrieval

Structured prompts

English proficiency

Tools

LangGraph

API orchestration

Semantic retrieval

Job description

We are looking for experienced AI/ML Engineer to join our team working on agent engineering. In this remote position, you will focus on constructing agent tools and defining schemas, playing a crucial role in ensuring seamless integration with the Semantic Retriever. You will help deploy structured interfaces for multi-agent workflows, contributing to innovative AI solutions. If you are passionate about AI and Machine Learning and eager to work on cutting-edge projects, this opportunity may be the right fit for you.

Your tasks

• Building and developing tools for AI agents and defining their schemas
• Ensuring seamless integration with the Semantic Retriever
• Deploying and configuring structured interfaces for multi-agent workflows
• Implementing complex prompts and generating structured LLM outputs
• Writing comprehensive unit tests for all developed solutions

Requirements

• Minimum 5 years of experience in software engineering or AI/ML
• Strong proficiency in Python and experience with Pydantic schema development
• Expertise in API orchestration and tool architecture
• Practical knowledge of LangGraph and experience with semantic retrieval integration
• Ability to implement complex prompts and generate structured LLM outputs
• Advanced level of English
• Residing in Poland required

Nice to have

• Familiarity with other AI frameworks or tools

Job no. JOB-DA6ZV

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care