Backend / AI Developer - Freelancer

Posted 12 Days Ago
5 Locations
In-Office or Remote
Junior
eCommerce • Fintech • Software • Financial Services • PropTech
The Role
Build an AI transformation platform for enterprise process automation and decision support. Responsibilities include integrating CRM, analytics, and BI data; designing schemas and ETL pipelines; building AI agents and MCP servers; developing backend APIs and user-facing tools; and maintaining containerized infrastructure, databases, monitoring, and observability. The role also contributes to agent-platform architecture, documentation, data quality, and client collaboration.
Summary Generated by Built In
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.


RequirementsWhat 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

Skills Required

  • Approximately 2 years of commercial backend development experience with Python
  • Hands-on experience with FastAPI or a comparable modern web framework
  • Knowledge of PostgreSQL, including schema design, query writing, and optimization
  • Experience building and consuming REST APIs
  • Understanding of ETL and data synchronization concepts
  • Understanding of maintaining data consistency 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 such as Claude Code
  • Ability to critically verify AI-generated output
  • Ability to write clear technical documentation
  • Good communication skills and confidence working directly with client-side teams
  • English proficiency sufficient for daily client communication at B2 or upper-intermediate level
  • Experience with agent frameworks such as Agno, LangChain, or LlamaIndex
  • Familiarity with Model Context Protocol
  • Basic Next.js or React skills
  • Experience with observability and monitoring tools
  • Experience integrating CRM, analytics, or BI systems
  • Enterprise or consulting project background
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Wrocław
104 Employees
Year Founded: 2010

What We Do

Monterail is a full-service software development company with 130+ experts on board delivering meaningful software for the fintech, proptech, wellness, and eCommerce sectors. For over 13 years now, we use Ruby on Rails and Flutter to build beautiful web and mobile applications. We have delivered 390+ successful projects for over 235 clients from different parts of the world. In 2016 & 2017 we were recognized by Deloitte as one of the fastest-growing tech companies in Central Europe as well as listed in the Financial Times 1000 rank two times in a row, in 2018 and 2019.

Similar Jobs

Pfizer Logo Pfizer

Principal Engineer

Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
Remote or Hybrid
31 Locations
121990 Employees
177K-294K Annually

CrowdStrike Logo CrowdStrike

Sales Engineer

Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Remote or Hybrid
3 Locations
11000 Employees

Capco Logo Capco

Consultant

Fintech • Professional Services • Consulting • Energy • Financial Services • Cybersecurity • Generative AI
Remote or Hybrid
Poland
6000 Employees

Capco Logo Capco

Consultant

Fintech • Professional Services • Consulting • Energy • Financial Services • Cybersecurity • Generative AI
Remote or Hybrid
Poland
6000 Employees

Similar Companies Hiring

Ford Energy Thumbnail
Automotive • Software • Energy • Utilities • Manufacturing • Renewable Energy
US
55 Employees
Revel Thumbnail
Aerospace • Hardware • Robotics • Software
Marina Del Rey, California
70 Employees
Blee Thumbnail
Artificial Intelligence • Marketing Tech • Software
New York, New York
30 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account