Haystack
← Back to Jobs
Technology

Blockchain Developer(Java Springboot)

Judge Group, Inc.Chicago, IL🇺🇸United StatesPosted 6 Jul 2026

Quick Overview

Salary
$70 - $90/hr
Work Type
Hybrid
Level
Mid Senior

Job Description

Location: Chicago, IL Salary: $70.00 USD Hourly - $90.00 USD Hourly Description:
Our client is currently seeking a Blockchain Developer(Java Springboot)

Key Responsibilities
  • Architect, develop, and deploy decentralized applications (dApps) with permissioned access at both smart contract and protocol levels
  • Design, build, and interact with smart contracts across major blockchain/DLT platforms
  • Develop blockchain oracles to integrate off-chain data with on-chain systems
  • Build and maintain integration libraries to connect blockchain systems with backend servers and APIs
  • Collaborate with cross-functional teams to gather requirements, define architecture, and estimate delivery timelines
  • Ensure system robustness, including scalability, resiliency, and fault tolerance
  • Provide technical mentorship and promote best practices within the engineering team
  • Develop and maintain comprehensive documentation for blockchain processes and workflows
  • Ensure compliance with data protection regulations, particularly in digital payments
  • Stay updated with the latest advancements in blockchain, cryptography, and cybersecurity


Required Qualifications
  • Bachelor's degree in Computer Science, Information Technology, or a related field
  • Proven experience as a Blockchain Developer or in a similar role
  • Strong hands-on experience with Java Spring Boot (mandatory)
  • Solid understanding of the software development lifecycle (SDLC)
  • Proficiency in one or more programming languages such as Solidity, Java, Node.js, Python, Go, or Rust
  • Strong knowledge of data structures and algorithms
  • Experience with cryptographic techniques and secure system design
  • Understanding of cybersecurity principles, standards, and common attack vectors
  • Ability to design scalable, high-performance systems
  • Strong problem-solving skills and ability to work independently or within a team

By providing your phone number, you consent to: (1) receive automated text messages and calls from the Judge Group, Inc. and its affiliates (collectively "Judge") to such phone number regarding job opportunities, your job application, and for other related purposes. Message & data rates apply and message frequency may vary. Consistent with Judge's Privacy Policy, information obtained from your consent will not be shared with third parties for marketing/promotional purposes. Reply STOP to opt out of receiving telephone calls and text messages from Judge and HELP for help.
Contact:
This job and many more are available through The Judge Group. Please apply with us today!

Skills

Node.js
Rust
Spring
Spring Boot
Smart Contracts
Solidity
Blockchain
Java
Python

Similar jobs