About the Position

Backend / AI Developer - Freelancer

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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.

Responsibilities

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

Requirements

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

We Offer

Opportunity to work on cutting-edge AI projects
Flexible working hours
Professional growth opportunities
Collaborative and innovative work environment

About the Company

We’re an official Vue.js partner, which means Monterail puts a lot of effort into continuously learning and building meaningful products with Vue. Looking for a job as a Vue.js developer? Check out our Vue.js openings.

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