Senior Backend (Java) Engineer

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.

Role Objective:

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.

Key Responsibilities

• 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.

Required Qualifications

• 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.

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

*not applicable for freelancers