Senior Data Analyst for the Trisigma Team

About the team: We are developing Trisigma (trisigma.io) — an analytics tool for A/B experimentation and analytics automation in large organizations. Our mission is to enable companies to make daily data-driven decisions without using analysts as an interface to the DWH. The platform is successfully operating within Avito and is being developed as a B2B product for the external market:

• Over 7,000 A/B tests are conducted annually using Trisigma
• Daily aggregation of over 500,000 metrics and dimensions, including statistical test calculations
• Our own high-performance metrics engine (Semantic Layer), used both for A/B testing and for standardizing business reporting Our clients are analytics and product teams from retail, fintech, e-grocery, e-commerce, and other industries. We work with real experimental data from the largest companies in Russia and the CIS — each project is a non-standard task with a real impact on the business.

You will be responsible for:

• Conducting R&D in the field of A/B experiments: researching methods to improve sensitivity, the correctness of statistical criteria, and approaches to metric analysis — drawing on global experience and scientific publications
• Designing the technical design of product increments — from hypothesis formulation to computational pipeline specification
• Leading research and consulting projects with large IT companies: immersing in the client's context, designing analytical solutions, and bringing them to implementation
• Participating in the development of the engine and language for analytical metrics (Semantic Layer)
• Presenting findings and justifying recommendations — both to the internal team and to product managers and executives on the client side
• Developing the platform's methodological base: documenting approaches, forming best practices, participating in the preparation of publications

We expect you to have:

• Data analytics experience of 3+ years (product, research, or data science)
• Proficient in Python and SQL
• Understanding of mathematical statistics and hypothesis testing principles: confidence intervals, MDE, SRM, multiple comparisons, sensitivity optimization methods
• Experience working with analytical warehouses (ClickHouse, Trino, BigQuery, or similar)
• Proficient in data visualization tools (Tableau, Superset, or similar)
• Ability to explain complex analytical concepts in simple language — for product managers, business executives, and non-technical audiences
• Ability to decompose tasks, structure research from problem statement to results presentation
• Autonomy: ability to generate ideas, propose solutions, and achieve results

It would be great if you:

• Have experience with LLMs and AI agents: usage in analytical workflows, prompt engineering, integration into pipelines
• Have a mathematical background: education in statistics, econometrics, applied mathematics
• Have experience in consulting or working with external clients
• Have publications or talks on the topics of A/B testing, causal inference, analytical systems
• Have experience in designing semantic layers or analytical platforms
• Are familiar with Lakehouse architectures (Iceberg, S3, Trino)

Working with us means:

• The opportunity to influence business and product development;
• Interesting and diverse tasks: analysts at Avito look for business growth points, study user behavior, develop frameworks, and set up dashboards;
• High-quality data, powerful infrastructure and tools, any necessary hardware — everything is ready for productive work;
• A talented team, a great analytical culture, and a community of professionals;
• A transparent bonus system, a competitive salary — we will discuss the specific amount during the interview;
• A personal learning budget that can be spent on books, courses, and conferences;
• Health care: from day one, you will have VHI with dental coverage, a general practitioner and a masseur are available at the office;
• Remote work and a wonderful office two minutes from the Belorusskaya metro station: panoramic views of the city center, spaces for focused work, and relaxation areas.