Demo

Senior Block Chain Developer

Purplejack Technologies LLC
Chicago, IL Contractor
POSTED ON 6/5/2026
AVAILABLE BEFORE 7/5/2026

Role: Senior Blockchain Developer

Location: Chicago, IL – Hybrid

 

Must-Have Skills

Cryptography

GoLang

Java

NodeJs

Python

SDLC

Spring Boot

Must have 10 yrs of Blockchain developer experience

Must have 10 Java SpringBoot experience

Must have SDLC experience Must be able to code in Solidity, Java, NodeJs, Python, GoLand, and Rust

Must have outstanding understanding of data structures and algorithms

Description

Education:  • Bachelor’s degree in Information Technology or Computer Science  Required Qualifications: 

• Java Springboot experience is a must

 • Experience working as a Blockchain Developer or a similar role in the IT department

 • Experience leading to a complete understanding of the software development lifecycle

• Expertise in building robust systems (resiliency, fault tolerance, scalability) at scale

• Demonstrate excellent ability to code in various languages such as Solidity, Java, NodeJs, Python, GoLang, Rust and others

 • Experience in working with various types of cryptography to secure data

• Outstanding understanding of data structures and algorithms

 • Knowledge of various cybersecurity guidelines and protocols

• Strong understanding and knowledge of various kinds of cyberattacks

 • Ability to work in a team or individually as and when required

 • Possess excellent communication skill

s • Have keen eye for details

 • Manage multiple projects simultaneously  

Preferred Qualifications:  • Experience working with Cloud platforms such as MS Azure, AWS preferred Senior Blockchain Developer 

Summary: 

 • As a Blockchain Developer, you are responsible for developing application features and interfaces using blockchain technology

• You will be also responsible for designing and developing a system that is secure, reliable and scalable

 • Your primary goal for this job role will be designing, implementing, and administering a secure blockchain network

 • You should be highly knowledgeable about various blockchain technologies

 • You should also have an excellent understanding of cryptography and its uses in the blockchain network

• You should be knowledgeable about packing & deploying apps via CI/CD pipelines to a cloud platform

 Job Responsibilities: 

 • Architect, develop and deploy decentralized applications providing permissioned access to data at both the smart contract and protocol level

 • Develop & Interacting with Smart Contracts implemented on most common Blockchain/DLT technology platforms

 • Oracle development (connecting "off-chain" data to the blockchain)

• Construct integration libraries to interface with our server and APIs

• Collaborate closely with the rest of the engineering team to review application requirements, help plan implementation details and estimate delivery timelines

 • Provide mentorship to your peers in the engineering team through education on best practices

 • Preparing documentation on the blockchain development processes

• Adhering to all the rules and regulations of data protection for digital payments

• Staying updated with the latest crypto technologies for data protection

 

 

Hourly Wage Estimation for Senior Block Chain Developer in Chicago, IL
$86.00 to $106.00
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