Senior AI Engineer (Agentic AI & ML)

Avenga; Poland; On-site; PLN 180,000 - 280,000; Full time

Job summary

Avenga is seeking a Senior AI Engineer / ML Engineer to join an R&D team building next‑generation AI solutions based on Large Language Models and agentic AI. You will design end‑to‑end AI systems, evaluate business problems, architect scalable solutions, and drive ideas from concept to deployment.

You will lead production-grade agentic AI systems, work on RAG pipelines and semantic search, and develop robust Python backends and FastAPI APIs.

Qualifications

• 6+ years of building machine learning systems in an industrial setting.
• proven ML leadership including translating business problems into ML solutions.
• experience with agentic orchestration frameworks and multi-agent architectures.

Responsibilities

• Design end-to-end AI solutions by analyzing business problems and selecting scalable ML approaches.
• Build production-grade agentic AI systems using modern orchestration frameworks and LLMs.
• Develop and improve RAG pipelines, semantic search, and knowledge retrieval.
• Design robust Python backend services and APIs to support AI applications.
• Collaborate with engineering and product teams for rapid prototyping and validation.
• Evaluate new technologies and translate research ideas into production-ready solutions.

Skills

ML leadership

LangChain

LangGraph

Python

APIs

FastAPI

Vector databases

RAG

Semantic search

Pydantic

Async programming

Knowledge systems design

Tools

Docker

FastAPI workflows

Job description

This is us

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and Ul design, managed services, product development, and software development.

This is the job

We're looking for a Senior AI Engineer / ML Engineer to join an R&D team building next-generation AI solutions based on Large Language Models and agentic AI. This is not a traditional ML engineering role. You'll work on rapidly evolving AI products, combining modern LLM capabilities with strong Machine Learning fundamentals to design production-ready solutions. You'll be expected to evaluate business problems, choose appropriate ML approaches, architect end-to-end systems, and independently drive ideas from concept to deployment. If you enjoy solving complex engineering problems around LLMs and agentic AI, experimenting with new technologies, and turning research into practical products, we'd love to hear from you.

This is the team

You’ll join a senior AI engineering team working in a fast-moving R&D environment where experimentation, ownership, and rapid iteration are part of everyday work. The team designs and delivers production AI systems based on LLMs, agentic workflows, and modern Machine Learning techniques. Engineers are expected to take ownership of technical decisions, collaborate closely with architects and product stakeholders, and continuously evaluate new approaches as the technology evolves. This role offers the opportunity to work on cutting-edge AI products while having a real impact on both technical direction and product design.

This is you

• 6+ years of commercial experience building Machine Learning systems.
• Proven ML technical leadership experience — the ability to understand business problems, select appropriate ML approaches, design end-to-end solutions, and make technical decisions beyond simply implementing models.
• Strong hands-on experience with agentic orchestration frameworks such as LangGraph, LangChain, or similar.
• Experience designing multi-agent systems, orchestration workflows, state management, tool calling, and structured outputs.
• Hands-on experience building production-grade applications using Large Language Models (OpenAI, Gemini, Anthropic or similar).
• Strong understanding of:
• Retrieval-Augmented Generation (RAG)
• embeddings
• semantic search
• retrieval optimization
• prompt engineering and context management
• Experience working with vector databases (Vertex AI RAG Engine, Pinecone, FAISS, Weaviate or similar).
• Strong Python development skills.
• Experience building APIs with FastAPI (or similar frameworks).
• Experience with async programming and long-running backend processes.
• Experience designing structured data models using Pydantic (or similar validation frameworks).
• Experience with Docker.
• Comfortable working independently in fast-changing R&D and Proof-of-Concept environments.
• Strong ownership mindset and excellent problem-solving skills.
• Experience using AI-assisted development tools for coding, debugging, refactoring, and documentation.

Nice‑to‑have skills:

• Experience with Google Cloud Platform.
• Hands‑on experience with Vertex AI and Gemini.
• Experience with Vertex AI RAG Engine.
• Experience with AWS or Azure and willingness to work with GCP.
• Experience combining LLMs with Computer Vision, signal processing, or other multimodal AI systems.
• Experience fine‑tuning foundation models or adapting open‑source LLMs.
• Experience designing evaluation and benchmarking pipelines for AI systems.

This is your role

• Design end-to-end AI solutions by analysing business problems, selecting appropriate Machine Learning approaches, and defining scalable system architectures.
• Build production-grade agentic AI systems using modern orchestration frameworks and Large Language Models.
• Develop and improve Retrieval‑Augmented Generation (RAG) pipelines, semantic search, and knowledge retrieval solutions.
• Design and implement robust Python backend services and APIs supporting AI applications.
• Collaborate with engineering and product teams to rapidly prototype, validate, and iterate on new AI capabilities.
• Evaluate new technologies, frameworks, and research directions, translating promising ideas into production‑ready solutions.
• Drive technical quality, reliability, and maintainability across AI systems while contributing to architectural decisions and engineering best practices.

What awaits you at Avenga?

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.