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Blockchain Developer

Exclusive opportunity

Onsite

Blockchain Developer

Avance Consulting

Blockchain Developer

Skills

BlockchainSQL QueriesKotlinDockerJavaMicroservicesSpring BootSolidityKafkaRabbitMQKubernetesCompliance

1 day ago

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Important information


Contract type:

Freelance / Contract

Location:

Amsterdam, Netherlands

Work mode:

Onsite

Published on:

22 October 2026

What they need


Minimum Qualifications

  • 5+ years of experience in software engineering, solution design, or architecture roles
  • Strong stakeholder management experience across business and technology domains
  • Strong analytical and problem-solving capabilities
  • Experience working in Agile organizations
  • Bachelor's degree in Computer Engineering, Software Engineering, or a related discipline
  • Fluent English communication skills (C1 level or above)

Technical Skills

Strong experience in:

  • Java (preferred)
  • Kotlin
  • Spring Boot
  • REST APIs
  • Microservices Architecture

Experience with:

  • Event-driven architectures
  • Kafka
  • RabbitMQ or similar messaging technologies
  • SQL and NoSQL databases
  • Containerization (Docker)
  • Kubernetes
  • CI/CD pipelines
  • Git-based development workflows

Good understanding of:

  • Distributed systems
  • System integration
  • API design
  • Scalability patterns

Roles and Responsibilities

Backend Engineering

  • Design and develop enterprise-grade backend services using Java.
  • Build APIs and microservices supporting digital asset products.
  • Develop scalable and resilient systems aligned with banking standards.
  • Ensure high availability, security, performance, and maintainability.

Blockchain Development

  • Implement blockchain-related business logic and workflows.
  • Develop components supporting:
  • Smart contract interactions
  • Minting and burning processes
  • Asset transfer flows
  • Wallet management capabilities
  • Integrate external blockchain networks into client digital asset ecosystem.

Platform Integration

  • Build integrations with digital asset custody and wallet providers.
  • Develop connectivity with blockchain infrastructure and third-party services.
  • Collaborate on SaaS blockchain platform implementation initiatives.

Security & Reliability

  • Follow secure coding and software engineering best practices.
  • Participate in architecture reviews and technical design discussions.
  • Contribute to operational readiness and production support activities.
  • Support compliance, audit, and security requirements.

Collaboration

  • Work within cross-functional agile teams.
  • Partner with Architects, DevOps Engineers, Security Specialists, Product Owners, and Blockchain Operations professionals.
  • Support technical mentoring and knowledge sharing across engineering teams.

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