Tango

Data analyst for live streaming

In short

This is a senior product/data analyst role owning a specific business domain (1:1 chat, content packs, negotiations, live streaming) at Tango, a Silicon Valley-backed live-streaming platform with 450M+ registered users. The role centers on running end-to-end A/B tests, building and maintaining production SQL/YAML data pipelines, and specifying BI event instrumentation across Android, iOS and Web. It demands advanced SQL, strong statistical/experimentation knowledge, 3+ years of consumer-product analytics experience, comfort writing and reviewing production code, and B1+ written English; the job is hybrid in Warsaw with 4 office days per week.

About
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!
Responsibilities
You own a business domain — the numbers in it, the events behind them, the pipelines that build them, and the experiments that change them. This is not a reporting role with a ticket queue. Be the analytics counterpart for a product domain: 1:1 chat, content packs, negotiations, live streaming — you become the person PMs and engineers come to for any number in that area, and the person accountable when it's wrong.
Run A/B tests on product features, end to end:
•Turn a product hypothesis into a test: primary and secondary metrics, the minimum effect worth detecting, and the audience.
•Confirm the population split and assignment events are genuinely correct before trusting the readout.
•Monitor it while it runs, then deliver a clear ship / don't-ship call and the reasoning behind it. This is a large part of the job, not an occasional project.
Build and maintain the datasets behind your domain:
•Write production transformations as SQL and YAML pipeline config, with freshness, uniqueness and validity checks. Your work goes through code review like any engineer's.
Specify instrumentation before it's built:
•Write the BI event spec for new features across Android, iOS and Web; then verify after release that events actually fire the way the spec said, and chase the gaps when they don't.
Requirements
•Advanced SQL, including window functions and multi-source joins — and the ability to reason about what a query costs, not only whether it returns.
•A strong experimentation background. Hypothesis testing, confidence intervals, power and minimum detectable effect — and the failure modes: peeking at a running test, multiple comparisons, hunting for a segment where the result works. You should also be the kind of person who checks that the experiment itself is sound before trusting its numbers.
•3+ years as a product or data analyst on consumer products, with real exposure to both mobile and web.
•Critical use of AI analytics tooling. We use an internal Claude-based layer over BigQuery heavily. We want someone who checks what it produces before passing it on.
•Comfort shipping code: git, merge requests, reading and reviewing someone else's SQL. You'll write production pipeline code, not only notebooks and queries.
•Working knowledge of product event tracking: what a well-specified event looks like, and why the same event behaves differently across platforms.
•English at B1 or above. You'll write specifications that engineers build from and present findings to product stakeholders, so clear written English matters more than fluent speech.
Nice to have
•BigQuery specifically — partitioned tables, clustering, slot-based pricing
•Airflow, dbt, or another orchestrated transformation framework
•Having been the analyst on a production incident, not only in the post-mortem
•Python with the usual statistical libraries — pandas, scipy, statsmodels
•A BI tool such as Looker, Tableau or Power BI — having built the models and dashboards, not only read them. We use Looker today but are moving off it, so the particular tool matters much less than having done the work in one
•Data quality tooling such as Soda or Great Expectations
•Experience in social, live-streaming, gaming or another engagement-driven consumer product
Conditions
•Stock options grant (we're a Silicon Valley Company)
•Competitive salary
•Medical insurance for you and 75% off for your relatives
•On-site position with 4 days at the office and 1 day WFH
•Budget for lunch
•Parking
•Multisport card
•Cheerful team spirit and fun office atmosphere

Stop applying.
Get referred.

$10 in free credits

In just 60 seconds, fully on autopilot — Eraldt's AI agents read your CV, map the roles you fit, find live vacancies and the people who can refer you, write personal emails, and get you referred.

This isn't an application: your CV doesn't go to the company, and we don't promise a referral for this exact role.

Discover who else lands interviews on autopilot