Java Backend Developer Blockchain exp — Photon

• Company: Photon
• Sector: Blockchain
• Source: web
  3.career

Hello There,

Role:
Java Backend Developer with Blockchain

Fulltime with Photon

We are seeking a highly skilled Backend Engineer with expertise in Java, Spring Boot, Angular, Blockchain, and Cloud‑Native Technologies to design, develop, and scale mission‑critical applications. The ideal candidate will build secure, high‑performance microservices, event‑driven systems, and blockchain‑integrated applications while contributing to modern web interfaces using Angular.

This role requires strong experience in distributed systems, cloud infrastructure, API development, and blockchain technologies, with the ability to deliver scalable solutions in a fast‑paced environment.

• Design, develop, and maintain scalable backend services using Java (JDK 11+) and Spring Boot.
• Build and optimize microservices following cloud‑native and domain‑driven design principles.
• Implement secure and maintainable business logic for complex enterprise applications.

• Design, develop, and document RESTful APIs and service integrations.
• Ensure API security, versioning, scalability, and performance optimization.
• Collaborate with front‑end teams to support seamless API consumption.
• Develop and maintain event‑driven systems using Apache Kafka.
• Implement real‑time event processing, asynchronous communication, and stream processing solutions.
• Monitor and optimize event pipelines for reliability and throughput.

• Design and integrate blockchain‑based solutions for secure and transparent transactions.
• Develop and interact with smart contracts using blockchain platforms such as Ethereum, Hyperledger Fabric, Polygon, or Binance Smart Chain.
• Build backend services that interact with blockchain nodes, wallets, and distributed ledgers.
• Ensure security, data integrity, and auditability of blockchain integrations.

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