Application InstructionsPlease send your CV to jobs@eulen.app before September 19th, 2025.IMPORTANT: Applications submitted through LinkedIn will not be considered. Only emailed applications will be reviewed.About UsEulen.app, the company behind DePix (a privacy-centric stablecoin), builds products for the sovereign individual with a focus on security, privacy, and technical excellence. We are looking for a battle-tested, hands-on architect to become the guardian of our core production systems.The RoleThis is a deeply technical, hands-on position for a master craftsperson who prefers architecting and shipping brilliant code to attending meetings. As the technical owner of our high-volume core services, you will be the gatekeeper of quality, the champion of reliability, and the calm voice of reason during a crisis. Your mission: to ensure our systems run with unwavering stability and speed, enabling us to deploy frequently and safely.What We Are Looking For (Required Qualifications):15+ years of working experience in critical, high-volume environmentsStrong knowledge of backend programming (Rust, Go, C++, or similar)Expertise in scalable and resilient architectureProven experience with automated testing and incident responseBackground in designing and operating mission-critical systemsExcellent problem-solving and collaboration skillsSelf-motivated, lifetime learner, aligned with Bitcoin ethosNice to have (Preferred Qualifications):Experience with Bitcoin protocols (Liquid, Lightning)Familiarity with compliance-aware architecture in fintechOpen-source contributionsBackground in cryptography or financial systemsPrevious startup or scale-up experienceHiring Process:Our selection process is designed to identify the best, and it moves quickly.September 19th (Friday): Phase 0 begins. Instructions are sent at 00:00 BRT. This first challenge (via Google Forms) must be completed within 24 hours.September 20th (Saturday): Candidates who successfully pass Phase 0 will receive instructions for Phase 1. This next stage, consisting of cultural and logical assessments, must be completed on this day.September 21st (Sunday): Successful candidates from the previous stage will receive instructions for Phase 2. This final challenge, a specific technical deep-dive, must be completed on this day.Candidates who successfully complete all phases will be contacted to schedule a final interview, which may be conducted online or in person.⚡ Join us to architect the backbone of Bitcoin payments, ensuring security, reliability, and technical excellence in a remote-first, high-performance culture.More information: jobs.eulen.app