Java Engineer - Contractor at Coinmarketcap · Web3Vacancy
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Java Engineer - Contractor

Remote
$75,000–$125,000
◆ 8/10 cryptodevOtherremote
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About this role

Join CoinMarketCap as a Java Engineer Contractor to design and optimize complex systems in the crypto data space. Work remotely with a global team to enhance application performance and stability.

Description

About the Company

CoinMarketCap is the world's most trusted and accurate source of data for cryptocurrencies. Used by millions of individuals, organizations, and exchanges, CoinMarketCap brings the most up-to-date market capitalizations, pricing, and cryptocurrency information to users. Our mission is to be the world's authority on cryptocurrency data, powering decisions and insights to drive greater understanding and adoption of cryptocurrencies.

About the Role

We are seeking a Java Engineer to independently investigate and design complex systems, optimize system performance, and ensure the stability of system services.

Responsibilities

  • Independently investigate and design relatively complex systems.
  • Optimize system performance and ensure the stability of system services.
  • Translate business requirements and use cases into functional applications.
  • Design, build, and maintain efficient, reusable, and reliable Java code.
  • Review, test, and verify code for adherence to quality and security standards.
  • Ensure the best possible performance, quality, and responsiveness of the applications.
  • Identify bottlenecks and bugs, and devise solutions to these problems.
  • Help maintain code quality and organization.

Requirements

  • 8+ years of online troubleshooting experience with full lifecycle of project development for Java applications from similar industry.
  • Understanding of the underlying principles of commonly used middleware.
  • Familiarity with Redis, MongoDB, MySQL, Kafka, xxl-job, K8s, SpringBoot, localCache, and Prometheus.
  • Strong skills in core Java, server-side Java technologies, and Spring frameworks.
  • Extensive experience in software design, architecture, development integration.
  • Solid knowledge of event processing models, multi-threading, enterprise integration pattern, Web Service and REST.
  • Experience in Reactor and Microservice (added value).
  • Basic or Fluent English level.

Details

  • Type: Contractor, Remote
  • Location: Global (Bangkok, Hanoi, Hong Kong, Kuala Lumpur, Penang, Seoul, Taipei)
  • Salary: $75K–$125K
Job Details
Salary$75,000–$125,000
LocationRemote
AI Score★★★★★★★★☆☆ 8/10
PostedJul 10, 2026 (1d ago)
Tags & Skills
cryptodevOtherremote
Tech Stack
JavaSpringBootRedisMongoDBMySQLKafkaK8slocalCachePrometheus

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