Backend / AI Developer - Freelancer
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 1d ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 2d ago
The date the source published, not the day we noticed it (2026-09-30). Last seen at its source 1h ago.
We have tracked this listing since 30 Sep 2026 (1 days). The employer's own board has carried it every time we have read it, most recently 1 hour ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
Poland
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay PLN 302.4k–399.8k/yr
Middle 50% of 44 listings that do state pay — Engineering · all levels · Poland · PLN/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
-
workable employer's own board first seen 1d ago · last seen 1h ago
The listing
About the Project
We're building an AI Transformation platform for an enterprise client, focused on back-office process automation and AI-driven decision support. The platform brings together data from multiple business systems and puts AI agents on top of it, so that business teams get actionable insights and automated workflows instead of manual routines.
Requirements
What You'll Do
- Integrate data from multiple business sources (CRM, analytics, BI) into a single, cohesive data layer
- Build and deploy AI agents that execute specific business tasks: signal analysis, pricing, content/SEO, data classification and tagging
- Develop MCP (Model Context Protocol) servers: dedicated, read-only, domain-specific servers that expose data to agents and tools
- Do data engineering work: schema design, ETL and synchronization from external systems, and ensuring data quality and consistency
- Contribute to the agent platform architecture: routing layer, cost control, access policies, and telemetry for LLM calls
- Design and build backend APIs connecting the data layer with agents and front-end applications
- Create user-facing tools for business teams, driven by data and agent-generated insights
- Maintain infrastructure: containerization, database management, monitoring, and observability
- Document architectural decisions and keep strict contracts between system layers
Tech Stack
Python · FastAPI · Agno (agent framework) · MCP · PostgreSQL · Docker / Docker Compose · Next.js
What we are looking for:
- Solid commercial experience (approx. 2 years) in backend development with Python
- Hands-on experience with FastAPI or a comparable modern web framework
- Good knowledge of PostgreSQL: schema design, query writing, and optimization
- Experience building and consuming REST APIs
- Understanding of ETL and data synchronization concepts, and of how to keep data consistent across systems
- Working knowledge of Docker and Docker Compose
- Practical experience with LLMs and prompt writing; interest in building agent-based systems
- Comfort working with agentic AI tools (e.g., Claude Code) in daily development, and the discipline to critically verify their output
- Ability to write clear technical documentation
- Good communication skills and confidence working directly with client-side teams
- English level sufficient for daily communication with the client (B2+ / Upper-Intermediate)
Nice to Have
- Experience with agent frameworks (Agno, LangChain, LlamaIndex, or similar)
- Familiarity with MCP (Model Context Protocol)
- Basic Next.js / React skills for working on front-end applications
- Experience with observability and monitoring tools
- Experience integrating with CRM, analytics, or BI systems
- Background in enterprise or consulting projects
What do we mean by freelance?
- Read more at Monterail Tech Network