About the Client
Our client is a fintech startup. As a Principal Member of Mastercard, the company is strongly positioned in high-risk payments and works exclusively with PSPs rather than merchants. With a team of 25 people and offices in London and Riga, they focus on acquiring, payments, and accounts. The culture emphasizes punctuality, trust, clarity, innovation, ownership, and practical thinking, driven by a young and ambitious team.

Role Overview
As a DWH Lead, you will be responsible for building and maintaining the financial data warehouse layer. You will ensure data consistency and accuracy across multiple systems, lead technical decision-making in the data domain, and create actionable insights through well-designed visualizations and dashboards. The role involves close collaboration with product, analytics, and business stakeholders.

Key Responsibilities

• Ensure data consistency and accuracy across multiple systems.
• Perform data reconciliation and validation.
• Build and maintain the financial data layer in the data warehouse.
• Develop and optimize data visualizations and dashboards in Grafana.
• Lead technical decision-making for scalable and reliable data solutions.
• Collaborate with stakeholders to gather requirements and deliver insights.

Requirements

• Strong knowledge of relational databases (PostgreSQL), including indexing, partitioning, and query optimization.
• Proficiency in Python for data ETL, automation, API integrations, and scheduled jobs.
• Experience with Grafana for data modeling, reporting, and dashboard optimization.
• Background in high-load backend or analytical projects.
• Strong problem-solving skills and ability to lead technical decisions.
• Experience working closely with product, analytics, and business teams.
• Previous fintech/finance experience is an advantage.
• Good knowledge of English and Russian.

Key Soft Skills

• Analytical and detail-oriented mindset.
• Strong communication and collaboration skills.
• Ability to balance business needs with technical requirements.
• Leadership in driving technical decisions.
• Proactive and structured problem-solving approach.

What We Offer

• Hybrid work setup with flexible hours.
• Competitive salary based on experience and contribution.
• Additional paid Wellbeing Days.
• Friendly and collaborative team culture.
• Opportunity to grow with the company and take on new responsibilities.
• Startup environment where ideas quickly become reality.

Drive data consistency and insights as a DWH Lead in a fast-growing fintech, owning PostgreSQL, Python ETL, and Grafana dashboards to power high-load payment systems.