

Senior/Principal Blockchain Developer
β - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior/Principal Blockchain Developer with a contract length of unspecified duration, offering $75 - $85/hr W2. It requires 8+ years in Java, blockchain experience, AWS proficiency, and a Bachelor's in Computer Science. Hybrid remote; onsite in Boston, MA.
π - Country
United States
π± - Currency
$ USD
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π° - Day rate
680
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ποΈ - Date discovered
June 4, 2025
π - Project duration
Unknown
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ποΈ - Location type
Hybrid
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π - Contract type
W2 Contractor
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π - Security clearance
Unknown
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π - Location detailed
Boston, MA
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π§ - Skills detailed
#AWS (Amazon Web Services) #SQS (Simple Queue Service) #Batch #Programming #Java #Jenkins #Strategy #JUnit #REST (Representational State Transfer) #Deployment #Computer Science #Cloud #SNS (Simple Notification Service) #Agile #Databases #Automation #Docker #SQL (Structured Query Language) #REST API
Role description
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β’
β’ Hybrid remote | 2 weeks per month onsite in Boston, MA
β’
β’ Collaborate with engineers in a fun and dynamic environment and work closely with technical leaders and Architects to build a secure crypto platform utilizing modern software development practices. As a senior member of the team, you will mentor engineers on the best practices for Software development.
Pay: $75 - $85/hr W2
Due to client requirement, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Responsibilities
Back End only work. AWS cloud β for application development, cloud native form of development. This person needs to be Senior/ Principal level with enterprise Java / Spring/ Springboot/ REST APIs. Hands on experience working on one or more blockchains such as Bitcoin, ETH, etc, and understand Cryptography.
Experience Requirements
β’ 8+ years' experience in software development using object-oriented programming languages like Java
β’ Experience with blockchains such as Ethereum, Bitcoin
β’ Experience building resilient services in Java
β’ Proficient in databases and SQL
β’ An understanding of microservice architecture and twelve factor app patterns
β’ Ability to build reliable software that can withstand unreliable environments
β’ Unit and integration test automation using JUnit
β’ Experience building and deploying applications using continuous integration pipelines and automated deployment tools such as Jenkins Core
β’ Possess critical thinking skills to build end-to-end solutions
β’ Passionate and committed to learning new things and developing with the latest technologies and frameworks
β’ Work well in both a small agile team and independently, having a strong user focus
β’ Strong analytical and communication skills and the ability to handle multiple tasks at any given time
β’ Participate in engineering practices such as code and design reviews, environment strategy, and build and deployment pipelines
β’ Strong organization skills and attention to details
β’ Experience with AWS or other cloud platforms and containerization technologies such as Docker is a plus
β’ Experience with asynchronous workers and resilient messaging services such as SNS and SQS is a plus
Education Requirements
β’ Batchelor's degree in computer science or related field required.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
Please be advised- If anyone reaches out to you about an open position connected with Eliassen Group, please confirm that they have an Eliassen.com email address and never provide personal or financial information to anyone who is not clearly associated with Eliassen Group. If you have any indication of fraudulent activity, please contact InfoSec@eliassen.com.
Job ID: JN -062025-102295