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Senior Backend (Java) Engineer

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N-iX

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IT - Software Development

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Job Description:

N-iX is looking for a Senior Java Engineer to join our team! Our client is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem. The Senior Backend Software Engineer will be responsible for architecting, developing, and maintaining the high-performance backend services that power the core platform. Leveraging deep expertise in Java and distributed systems, you will collaborate with cross-functional teams to deliver secure, scalable solutions while exploring and integrating cutting-edge blockchain technologies.

Job Responsibility:

  • Design, build, and maintain high-throughput backend services and APIs in Java
  • Drive architecture discussions to enhance system scalability, resiliency, and performance
  • Prioritize security and compliance as core aspects of service design and delivery
  • Collaborate with product, security, DevOps, and compliance teams on cross-functional initiatives
  • Mentor engineers and lead by example with high engineering standards and best practices
  • Research and prototype blockchain integration opportunities (e.g., node syncing, client tooling)
  • Advocate for maintainable, modern infrastructure informed by industry best practices

Requirements:

  • Bachelor’s or Master’s degree in Computer Science or related field
  • At least 6+ years of professional software engineering experience
  • Strong proficiency in Java and experience with modern frameworks and distributed systems
  • Experience with performance optimization (e.g., low-latency systems, microservices)
  • Knowledge of security and compliance best practices in financial or regulated contexts
  • Interest or hands-on experience in blockchain, crypto infrastructure, or decentralized systems
  • Strong collaboration and mentorship skills in a fast-moving, cross-functional environment
  • Upper-intermediate English proficiency is required, along with native proficiency in Spanish or Portuguese
What we offer:
  • Flexible working format - remote, office-based or flexible
  • A competitive salary and good compensation package
  • Personalized career growth
  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
  • Active tech communities with regular knowledge sharing
  • Education reimbursement
  • Memorable anniversary presents
  • Corporate events and team buildings
  • Other location-specific benefits

Additional Information:

Job Posted:
March 21, 2026

Work Type:
On-site work
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