Senior Backend(Java) Developer

Aster

Charing Cross, United Kingdom

4 days ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Working hours

Regular working hours

Languages

English

Experience level

Senior

Compensation

£ 68K

Job location

Charing Cross, United Kingdom

Tech stack

Java

Algorithmic Trading

Amazon Web Services (AWS)

Business Logic

Cloud Computing

Failover

High-Frequency Trading

JSON

PostgreSQL

Node.js

Systems Development Life Cycle

Queue Management Systems

RabbitMQ

Redis

Blockchain

TypeScript

WebSocket

Load Balancing

Database Optimization

Backend

Containerization

Real Time Data

Kafka

GraphQL

Web3.js

Celery

Api Design

Stream Processing

Oracle Integration

Microservices

Requirements

- 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, * 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)