Java Developer Blockchain & Crypto

Compensation: $50,000 USD/year + performance bonuses
🎁 Benefits: Aguinaldo (13th-month bonus), health insurance
📍 Location: Hybrid – based in Brazil (occasional in-office collaboration)
🕒 Schedule: Full-time, flexible hours across global teams

PLEASE PROVIDE RESUME IN ENGLISH


About Mamoru

Mamoru is a global provider of digital asset financial services, backed by AP Capital. With over 18 offices worldwide, we specialize in OTC crypto trading, FX payment solutions, and institutional-grade blockchain infrastructure. We operate a centralized crypto OTC desk using a Request for Quote (RFQ) model and deploy market-neutral, multi-arbitrage strategies.

We’re growing fast, and we’re looking for ambitious developers ready to shape the future of blockchain-powered finance.

About the Role

We’re seeking a Java Developer with strong experience in blockchain or crypto-focused back-end development. You’ll work directly with our engineering and trading teams to build scalable systems for trading, asset management, and crypto payments. This is a hands-on development role focused on performance, reliability, and integration with financial protocols and platforms.

Key Responsibilities

• Develop and maintain Java-based microservices for blockchain trading systems

• Integrate with external APIs, blockchain nodes, and financial services

• Work on high-frequency, low-latency systems for OTC crypto and FX trading

• Collaborate with DevOps and Quant teams to optimize backend performance

• Contribute to secure, scalable, and compliant software architecture

• Debug, test, and maintain backend code in production environments

Requirements

• 3+ years of experience in Java development

• Solid understanding of object-oriented programming and design patterns

• Experience in blockchain development, smart contract integration, or crypto infrastructure

• Familiarity with RESTful APIs, WebSockets, and messaging queues (e.g., Kafka, RabbitMQ)

• Understanding of cryptographic principles and DeFi/crypto protocols

• Comfortable working in agile, distributed, and fast-paced teams

• Strong communication skills in English

Nice to Have

• Experience with Kotlin, Python, or Rust

• Knowledge of crypto custody, wallets, or exchanges

• Familiarity with tools like Docker, Kubernetes, and CI/CD pipelines

• Exposure to FIX protocol, RFQ models, or financial APIs

Why Join Mamoru?

• Work with a global fintech innovator at the frontier of digital finance

• Collaborate with experts in trading, blockchain, and quantitative strategies

• Hybrid model with flexibility and autonomy

• Competitive salary, performance bonuses, and great benefits