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The Senior Backend Developer (Java) role at Pioneer Services is an on-site position located in Hong Kong.

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Senior Backend Developer (Java)

Pioneer ServicesHong Kong2w ago

Aster is a next-generation decentralized perpetual exchange dedicated to delivering a seamless, powerful, and truly decentralized on-chain derivatives trading experience. From one-click trading to smart automation and deep on-chain liquidity, Aster is rethinking how DeFi should work — simple, efficient, and built for users.

Core Job Responsibilities

Blockchain Data Processing System Architecture

- 3+ years of experience in exchange core system development

- Design indexing systems, RPC interaction layers, and event stream processing architecture

- Build real-time data pipelines (e.g., Kafka/RabbitMQ integration)

High-Performance API Development

- Build REST/WebSocket/GraphQL interfaces

- Handle low-latency requirements in high-frequency trading scenarios

DeFi Application Logic Implementation

- Price oracle integration

- Trading simulation engine development; 3+ years of futures or spot trading system development experience

- Risk control system implementation

Microservices Architecture Design

- Wallet interaction services

- Trading queue management

- Gas fee optimization strategies

Infrastructure Reliability Assurance

- Node management

- Load balancing

- Failover systems

Required Skills:

5+ years of backend development experience (Java/TypeScript/Rust/Go), proficient in EVM smart contracts

Blockchain interaction experience (JSON-RPC, ethers.js/web3.py)

Database optimization (PostgreSQL/TimescaleDB/Redis)

Asynchronous architecture design (Kafka/RabbitMQ/Celery)

Preferred Knowledge:

Web3 ecosystem components (EVM, The Graph and other indexing solutions)

Security practices (rate limiting, input sanitization, replay attack protection)

Cloud deployment experience (AWS/GCP, containerization, IaC)

Senior Backend Developer (Java)

Core Job Responsibilities

Required Skills:

Preferred Knowledge:

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