Ruby Developer

ph3About Debifi /h3pAt Debifi, we live under the mantra “Own your money.” We believe in the transformative power of Bitcoin - not just as an asset, but as a foundation for true financial independence. Our philosophy, “Never sell. Borrow.”, empowers Bitcoin holders to unlock liquidity without parting with their assets. Through our non-custodial lending solutions, we enable users to /pp“Hold Your Keys” and stay in full control of their Bitcoin while accessing the financial flexibility they need. /ppWe are building the future of decentralized finance - one where Bitcoin becomes supercollateral and financial sovereignty is the norm. /ph3The Role /h3pAs a Ruby Developer at Debifi, you will help build the future of decentralized finance by developing secure, high-performance systems. You will work on fintech products used by more than 100,000 people globally, contributing to non-custodial Bitcoin lending solutions where financial sovereignty is the norm. In this role, you’ll collaborate closely with a small, focused team to create scalable, reliable services. We’re looking for developers for long-term cooperation who are passionate about Bitcoin, clean code, and shaping next‑generation financial products. /ph3Responsibilities /h3ulliDevelop clean, efficient, and maintainable code that meets both technical and functional requirements. /liliCollaborate closely with fellow developers, technical leads, UX designers, business and systems analysts, QA engineers, and support teams. /liliTroubleshoot and debug existing applications to ensure optimal performance and reliability. /liliMaintain, fix, and enhance existing software components. /liliParticipate actively in the quality assurance process, ensuring high-quality deliverables. /liliContribute to the deployment of software and system releases. /li /ulh3About You /h3ulliExperience with Ruby and the Rails framework /liliUnderstanding of OOP principles, design patterns, and experience with MVC, MVP, and other architectural approaches /liliUnderstanding of database design principles, ability to write complex SQL queries, knowledge of ActiveRecord ORM, and experience with PostgreSQL /liliKnowledge of strategies and best practices for optimizing SQL queries /liliUnderstanding how REST API, WebSockets, RPC, and client–server applications work /liliBasic experience with Docker and GitLab CI /liliBasic knowledge of /liliAbility to propose, justify, and implement a complete solution to a task from start to finish /liliAdherence to secure coding practices, including the ability to foresee and prevent possible attack vectors while developing, refactoring, or performing code reviews /liliEnglish proficiency sufficient for reading technical documentation, working with tasks in Jira, and communicating in corporate chat /liliStrong attention to detail and a responsible approach to code review /liliDesire for continuous professional growth /liliHigh level of self‑organization (important for remote work) /li /ulh3Nice to have /h3ulliUnderstanding of blockchain technologies: Bitcoin, Ethereum + ERC-20, Liquid /liliExperience writing or using cryptocurrency libraries and APIs, understanding of cryptographic principles /li /ulh3Compensation and Benefits /h3ulliCompensation range is location and seniority-determined /liliAnnual professional development budget /liliOption to participate in business trips and in specialized conferences /liliCorporate reward system and performance-based bonuses /liliReferral bonuses for bringing in a new team member /liliOpportunities for both vertical and horizontal career growth /liliFully remote work and a flexible schedule /liliAn option to receive your compensation in cryptocurrency /li /ul /p