PostgresRubyRuby on RailsRailsBlockchainCommunication
About this role
Role Overview
Engineer and optimize high-performance Ruby systems that handle billions of financial transactions, solving deep scaling, data, and code-quality challenges.
Design and develop scalable backend systems that process billions of financial transactions.
Provide technical direction across projects and collaborate with product and engineering leads to define priorities and architecture.
Own project delivery: from design and implementation to performance and reliability in production.
Refactor and modernize core Ruby systems to improve maintainability, readability, and speed.
Mentor other engineers through technical reviews, design discussions, and clear documentation.
Requirements
8+ years of backend experience with Ruby on Rails at scale
Proven record improving system performance and code quality
Strong understanding of data flows and software design principles
Experience working cross-functionally in async, remote environments
Clear communication and ownership mindset.
Bonus: Experience tuning Postgres in production
Built or optimized data ingestion or reconciliation pipelines
Open-source contributions to Ruby, Rails, or performance tooling
Background in fintech, taxtech, open banking, or blockchain systems