Ryz Labs

Senior Software Engineer, Kotlin, Crypto

Ryz Labs

full-time

Posted on:

Location Type: Remote

Location: Argentina

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Job Level

Senior

Tech Stack

CloudDistributed SystemsJavaKotlinNoSQLSQLWeb3

About the role

  • Design, develop, and maintain backend services using Kotlin, ensuring scalability, performance, and reliability.
  • Build and integrate systems for financial and crypto products, including wallets, exchanges, payment platforms, and blockchain-based services.
  • Collaborate with product managers, designers, and engineers to define and deliver robust technical solutions.
  • Participate in architectural decisions, code reviews, and continuous improvement of engineering practices.
  • Ensure security, data integrity, and system resilience in highly sensitive financial environments.

Requirements

  • 5+ years of experience as a Software Engineer.
  • Solid experience with Kotlin for backend development.
  • Previous experience in crypto, blockchain, fintech, or financial systems.
  • Strong understanding of backend architecture, APIs, and distributed systems.
  • Experience working with databases (SQL and/or NoSQL).
  • Familiarity with cloud environments and modern deployment practices.
  • Nice to have: Experience with blockchain protocols, Web3 ecosystems, or smart contracts.
  • Strong knowledge of security best practices in financial or crypto platforms.
  • Background in fast-paced startup or scale-up environments.
  • Experience with Java or JVM-based ecosystems.
Benefits
  • Flexible work arrangements
  • Professional development opportunities
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
Kotlinbackend developmentAPIsdistributed systemsSQLNoSQLcloud environmentsblockchain protocolsWeb3 ecosystemssmart contracts
Soft Skills
collaborationcommunicationproblem-solvingarchitectural decision-makingcode reviewcontinuous improvement