Demo

Sr Blockchain Developer

Dolphin Solutions Inc
Chicago, IL Contractor
POSTED ON 6/5/2026
AVAILABLE BEFORE 7/5/2026

Job Title: Senior Blockchain Developer

Location: Chicago, IL

Duration: 12 months

Work Model: Hybrid

Work Hours: First Shift

Positions: 2

Industry: Financial

 

Must have skills: Cryptography, GoLang, Java, NodeJs, Python, SDLC, Spring Boot and Data Structures / Algorithms

 

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 skills
  • Have keen eye for details
  • Manage multiple projects simultaneously

Preferred Qualifications: 

  • Experience working with Cloud platforms such as MS Azure, AWS preferred

 

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 Sr Blockchain Developer in Chicago, IL
$55.00 to $68.00
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