Senior Backend Developer (Java Spring) – Cryptocurrency Management Platform

Opened on Dec 5, 2025

Location: Fully Remote
Compensation: USD $12,,000 – $15,000 / month
Type: Full-Time / Part-Time / Contract

About the Role

We are seeking a highly skilled Senior Backend Developer with extensive experience in Java Spring to lead the development of our backend systems. You will work closely with frontend developers and product teams to design, implement, and optimize backend services that support real-time trading, secure transactions, and user account management.

Responsibilities

  • Design, develop, and maintain robust, scalable, and secure backend APIs and services using Java Spring Framework.

  • Integrate with third-party cryptocurrency APIs, exchanges, and blockchain networks.

  • Ensure data security, privacy, and compliance with industry standards.

  • Optimize system performance and scalability to handle high-volume trading activities.

  • Collaborate with frontend developers to define API specifications and troubleshoot issues.

  • Write clean, maintainable, and well-documented code.

  • Participate in code reviews, team meetings, and agile development processes.

  • Stay updated with the latest developments in blockchain technology, security, and backend best practices.

Requirements

  • Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.

  • 5+ years of professional experience in backend development with Java Spring.

  • Strong knowledge of RESTful API design, microservices architecture, and database systems (SQL and NoSQL).

  • Experience working with cryptocurrency APIs, blockchain, or financial trading platforms is a plus.

  • Familiarity with security best practices, encryption, and authentication protocols.

  • Experience with cloud services (AWS, Azure, or GCP) is preferred.

  • Strong problem-solving skills and ability to work independently and within a team.

  • Excellent communication and collaboration skills.

Nice to Have

  • Experience with real-time data processing and WebSocket.

  • Knowledge of frontend technologies, especially React, for better cross-team collaboration.

  • Prior experience in fintech or trading platforms.

What We Offer

  • Opportunity to work on a cutting-edge blockchain project.

  • Collaborative and innovative work environment.

  • Competitive salary and benefits.

  • Flexible working hours / remote work options.

Hiring Process

  1. Preparation and Project Review

    Candidates are required to review the Project Version 1 thoroughly before proceeding to the interview stages. They should familiarize themselves with the project scope and deliverables to demonstrate understanding during subsequent discussions.

  2. Technical Assessment

    Candidates will undergo a technical screening or test focused on the concepts and technologies used in Version 1. This step helps assess their technical skills, problem-solving abilities, and familiarity with the project requirements.

  3. Technical Interview with CTO

    A detailed technical interview will be conducted with our CTO. Topics will include: In-depth discussion of the candidate’s understanding of Version 1 Coding and problem-solving exercises Approach to development challenges and best practices

  4. Cultural and Work Environment Interview with CEO

    The final stage involves a meeting with the CEO to evaluate:

    • Cultural fit within the company

    • Work ethic and attitude

    • Alignment with company values and vision

    • Expectations regarding work environment and team collaboration