AI Engineer - Data & Analytics

Tango; Warszawa; On-site; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Stock options

Hybrid work model

Medical insurance

Lunch budget

Parking

Multisport card

Team vibe

Job summary

Tango is a live-streaming platform seeking an experienced AI/ML Engineer to own and expand our internal AI agent tooling and LLM-based capabilities. You will work across data modeling, RAG pipelines, and multi-agent systems in a fast-paced environment, collaborating with analysts and engineers to keep our AI agents accurate and reliable.

Join a growth-minded, hybrid team with stock options, medical insurance, and a supportive culture that values innovation and continuous learning.

Qualifications

• 3+ years of experience building production systems with LLMs.
• Hands-on experience building agents or applications with Claude, GPT, or similar LLM APIs.
• Strong Python and SQL skills and data modeling with cloud data warehouses.
• Excellent communication with non-engineering stakeholders.

Responsibilities

• Own and grow internal AI agent tooling, including CI/CD pipelines and deployment tooling.
• Build and deploy LLM-based AI agents with data warehouse access.
• Develop reusable AI skills for accurate business Q&A against data.
• Explore RAG pipelines, vector databases, and self-hosted agent infra and bring best options to production.
• Support data modeling for semantic layers and AI test/eval question sets.
• Ensure reliability and accuracy of deployed agents with monitoring and incident response.

Skills

LLMs

Python

SQL

Data modeling

Cloud data warehouses

Agent tooling

RAG architectures

English (B2+)

Tools

Claude/GPT APIs

Vector databases

CI/CD pipelines

Airflow

Soda data quality

Job description

Description

Tango is a successful, market leader, a live-streaming Platform with 450+ Million registered users, in an industry projected to reach $240 BILLION in the next couple of years.

The B2C platform, based on the best-quality global video technology, allows millions of talented people around the world to create their own live content, engage with their fans, and monetize their talents.

Tango live stream was founded in 2018 and is powered by 500+ global employees operating in a culture of growth, learning, and success!

The Tango team is a vigorous cocktail of hard workers, creative brains, energizers, geeks, overachievers, athletes, and more. We push the limits to bring our app from “one of the top” to “the leader”.

The best way to describe Tango's work style is not to use the word “impossible”. We believe that success is a thorny path that runs on sleepless nights, corporate parties, tough releases, and of course our users' smiles (and as we are a LIVE app, we truly get to see our users all around the world smiling right in front of us in real-time!).

Do you want to join the party?

Responsibilities

• Own and grow our internal AI agent tooling - skills, agents, CI/CD pipelines, and the deployment tooling that ships changes safely to production.
• Build and deploy LLM-based AI agents (data modeling, semantic layer, data quality, and validation checks) in a secure, reproducible multi-agent environment with access to our data warehouse and internal tools.
• Develop and maintain reusable AI skills that let an AI assistant answer business questions accurately against our data warehouse.
• Investigate and evaluate new approaches - RAG pipelines, vector databases, alternative model providers, self-hosted agent infrastructure - and bring the best ones into production.
• Support domain teams in data modeling - helping analysts and data engineers build semantic layers, canonical schemas, and AI test/eval question sets so their data is AI-ready.
• Troubleshoot MCP (Model Context Protocol) integrations end-to-end - connectivity, auth/IAM, tool schemas, and degraded or failing tool calls.
• Own the reliability and accuracy of deployed agents - monitoring, eval tracking, incident response, and iterating based on real usage.

Requirements

Must-have

• 3+ years of experience as an AI/ML Engineer, Data Engineer, or Software Engineer building production systems with LLMs.
• Hands-on experience building agents or applications with Claude, GPT, or similar LLM APIs; solid understanding of RAG architectures and vector databases.
• Strong Python and SQL skills, and comfort working with data models and cloud data warehouses.
• Strong communication skills - able to work directly with non-engineering stakeholders and explain technical concepts clearly.
• Ability to work in a fast-paced environment: comfortable investigating unproven tools and making pragmatic build-vs-adopt calls.
• English level: professional working proficiency (B2+).

Nice-to-have

• Experience with data-quality frameworks (e.g., Soda).
• Experience with workflow orchestration (e.g., Airflow) and CI/CD pipelines.
• Prior work on internal developer tooling, platform engineering, or AI agent infrastructure.
• Experience running or contributing to multi-agent systems.

What we offer:

• Stock options grant (we’re a Silicon Valley Company)
• Competitive salary
• Hybrid flexibility 4 days in office 1 home office
• Medical insurance for you and 75% off for your relatives
• Lunch budget
• Parking
• Multisport card
• Cheerful team spirit and fun office atmosphere