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BlockFi

Cryptocurrency & Financial Services

Jersey City, NJ • Founded 2017

Company Overview

Cryptocurrency lending and trading platform providing financial services for digital assets

BlockFi provides crypto-backed loans and high-yield savings accounts, bridging traditional finance with the digital asset ecosystem.

My Role

Team Lead Credit Cards

07/2020 - 08/2022

Led credit card product development in a microservices architecture with Elixir backend and React/native mobile frontends.

Key Responsibilities

  • Lead high-profile credit card product initiatives
  • Coordinate production releases with cross-functional teams
  • Support finance team for accurate rewards distribution
  • Manage global team coordination and planning
  • Architect microservices for credit card operations

Technologies Used

AWS Elixir Elixir APIs Microservices Mobile Development Phoenix PostgreSQL REST APIs React React Native

Key Projects

Credit Card Waitlist System

Led development of credit card waitlist and application flow system

Technologies

Elixir Phoenix React PostgreSQL AWS

Key Challenges

  • • Handling high volume of credit card applications
  • • Ensuring regulatory compliance for financial products
  • • Building scalable waitlist management system

Outcomes

  • ✓ Successfully launched credit card waitlist
  • ✓ Processed thousands of applications efficiently
  • ✓ Maintained 99.9% system uptime during launch

Credit Card Rewards System

Led development of BlockFi's credit card rewards payout system, ensuring accurate distribution to thousands of customers

Technologies

Elixir Phoenix AWS PostgreSQL Microservices

Key Challenges

  • • Ensuring accurate rewards calculations across complex rules
  • • Handling high-volume reward payouts reliably
  • • Integrating with multiple third-party payment systems

Outcomes

  • ✓ Accurate rewards distribution to thousands of customers
  • ✓ Automated reward calculation and payout processes
  • ✓ Reduced customer service inquiries about rewards

Credit Card Application Flow

Architected the credit card application flow, so users could apply for a BlockFi Credit card in the native app

Technologies

React Native Elixir APIs Mobile Development REST APIs

Key Challenges

  • • Integrating with third-party credit card partner APIs and maintaining compliance requirements
  • • Pre-populating application forms with existing user data while ensuring data accuracy
  • • Managing complex validation rules for credit application eligibility

Outcomes

  • ✓ Improved UX and reduced time to apply by prepopulating application with user profile information
  • ✓ Fast-feedback to users on application determination

Key Achievements

  • Credit Card Product Launch

    Successfully led the launch of BlockFi's credit card product

    Generated significant revenue and customer acquisition

  • Rewards System Implementation

    Implemented accurate rewards distribution system

    Processed millions in rewards payouts with 99.9% accuracy

  • Team Leadership

    Led global team coordination and planning initiatives

    Improved team efficiency and cross-functional collaboration