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Freelance Junior Blockchain Developer Jobs in Washington

SWIFT VA

Blockchain Developer

Manassas, VA

$225K/yr

Mentor junior developers and contribute to technical leadership * Stay updated on emerging blockchain technologies, protocols, and best practices Required Skills & Qualifications * Strong experience ...

SWIFT

Blockchain Developer

Manassas, VA · On-site

$225K/yr

Mentor junior developers and contribute to technical leadership * Stay updated on emerging blockchain technologies, protocols, and best practices Required Skills & Qualifications * Strong experience ...

SZNS Solutions LLC

Senior Software Engineer

Reston, VA · On-site

$127K - $168K/yr

Drive the development of decentralized applications and smart contracts in the blockchain space. * Team Leadership & Collaboration: Mentor junior engineers, conduct code reviews, and collaborate ...

SZNS Solutions LLC

Senior Software Engineer

Reston, VA · On-site

$127K - $168K/yr

Drive the development of decentralized applications and smart contracts in the blockchain space. * Team Leadership & Collaboration: Mentor junior engineers, conduct code reviews, and collaborate ...

SZNS Solutions LLC

Senior Software Engineer

Reston, VA · On-site

$127K - $168K/yr

Drive the development of decentralized applications and smart contracts in the blockchain space. * Team Leadership & Collaboration: Mentor junior engineers, conduct code reviews, and collaborate ...

National Academy of Sciences

Editor

Washington, DC · On-site

$73K - $92K/yr

May coordinate freelance activities in the unit, including finding and coordinating work among ... Works with designers, graphic artists, layout specialists, web developers, marketing, and ...

Analytica

Senior Data Engineer

Washington, DC · On-site

$119K - $162K/yr

... Mentor junior engineers and promote engineering best practices across teams. Qualifications ... blockchain. Founded in , the company is headquartered in Dubai, ARE, with a team of 51-200 ...

World Bank

Associate Senior Solutions Engineer

Washington, DC · On-site

$62.50 - $80.75/hr

... blockchain and distributed ledger technologies. It has since expanded to cover areas such as AI ... junior engineers, and drives innovation in integration and optimization. This role shapes ...

Fox

Lead Audio Operator

Washington, DC

$35.50 - $50/hr

Mentor and support junior audio operators and freelance staff * Maintain high standards for audio quality across all live programming WHAT YOU WILL NEED * Experience mixing audio for live television ...

Society for Science

Technical Product Manager

Washington, DC · On-site

$189K - $218K/yr

... Engineering Fair, and the Thermo Fisher Scientific Junior Innovators Challenge.A major focus of our ... ML security, blockchain, and IoT securityRequired Education and ExperienceBachelor's degree ...

Society for Science

Technical Product Manager

Washington, DC · On-site

$189K - $218K/yr

... Engineering Fair, and the Thermo Fisher Scientific Junior Innovators Challenge. A major focus of ... Familiarity with emerging technologies such as AI/ML security, blockchain, and IoT security ...

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Freelance Junior Blockchain Developer information

What does a freelance junior blockchain developer do?

A Freelance Junior Blockchain Developer designs, builds, and tests applications or smart contracts using blockchain technology such as Ethereum or Hyperledger. They typically work on a project basis, assisting clients with implementing decentralized solutions, writing code (often in languages like Solidity), and troubleshooting blockchain networks. As juniors, they collaborate with more experienced developers, learn best practices, and gradually take on more complex tasks as they gain experience.

What are the key skills and qualifications needed to thrive as a freelance junior blockchain developer, and why are they important?

To thrive as a Freelance Junior Blockchain Developer, you need a solid understanding of programming languages like Solidity or JavaScript, basic cryptography, and knowledge of blockchain platforms such as Ethereum. Familiarity with tools like Truffle, Ganache, and Git, as well as experience using web3 libraries and smart contract development environments, is typically required. Strong problem-solving skills, adaptability, and effective communication with clients help you stand out in freelance roles. These skills are crucial for building secure, functional blockchain solutions while effectively managing client expectations and project deadlines.

What are some common challenges faced by freelance junior blockchain developers when working with clients remotely?

Freelance junior blockchain developers often encounter challenges such as clearly defining project requirements, managing communication across different time zones, and ensuring alignment on deliverables due to the remote nature of the work. Additionally, staying updated on rapidly evolving blockchain technologies while meeting tight deadlines can be demanding. Building trust and credibility with new clients also requires demonstrating technical proficiency and transparent progress reporting throughout the project.

What is the difference between Freelance Junior Blockchain Developer vs Freelance Blockchain Developer?

AspectFreelance Junior Blockchain DeveloperFreelance Blockchain Developer
Experience LevelEntry-level, limited experienceMid-level to experienced
Skills & CertificationsBasic understanding of blockchain, coding skills, possibly certificationsAdvanced coding, multiple certifications, deeper blockchain knowledge
Work EnvironmentFreelance projects, startups, small companiesFreelance or consulting for larger projects or firms
Typical TasksSmart contract basics, simple blockchain integrationsComplex smart contracts, blockchain architecture design

The main difference between a Freelance Junior Blockchain Developer and a Freelance Blockchain Developer lies in experience, skill level, and project complexity. Junior developers are often just starting out with basic blockchain tasks, while experienced developers handle more complex projects and have advanced skills and certifications.

What cities in Washington are hiring for Freelance Junior Blockchain Developer jobs?

Cities in Washington with the most Freelance Junior Blockchain Developer job openings:

Freelance Junior Blockchain Developer jobs near you

Blockchain Developer

Manassas, VA

SWIFT VA
See more jobs at SWIFT VAexternal

$225K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 21 days ago

Job description

ABOUT US

We're the world's leading provider of secure financial messaging services, headquartered in Belgium. We are the way the world moves value - across borders, through cities and overseas. No other organisation can address the scale, precision, pace and trust that this demands, and we're proud to support the global economy.

We're unique too. We were established to find a better way for the global financial community to move value - a reliable, safe and secure approach that the community can trust, completely. We're always striving to be better and are constantly evolving in an ever-changing landscape, without undermining that trust. Five decades on, our vibrant community reflects the complexity and diversity of the financial ecosystem. We innovate diligently, test exhaustively, then implement fast. In a connected and exciting era, our mission has never been more relevant. Swift now has a presence in 200+ countries and legal territories to serve a community of more than 12,000 banks and financial institutions.

Education

University degree in computer science or related field. Or equivalent work experience.

Experience

10 to 12 years' experience in systems development.

Key Responsibilities

  • Design and develop blockchain-based applications and smart contracts

  • Build and maintain decentralized systems using platforms such as Ethereum, Solana, or Hyperledger Besu

  • Write secure, efficient smart contracts using languages like Solidity or Rust

  • Conduct code reviews, testing, debugging, and security audits

  • Optimize blockchain performance, scalability, and transaction efficiency

  • Integrate blockchain solutions with APIs, databases, and cloud services

  • Mentor junior developers and contribute to technical leadership

  • Stay updated on emerging blockchain technologies, protocols, and best practices

Required Skills & Qualifications

  • Strong experience in blockchain development and distributed systems

  • Proficiency in Solidity, Rust, JavaScript/TypeScript, Go, or Python

  • Deep understanding of smart contracts, cryptography, consensus mechanisms, and Web3 technologies

  • Experience with frameworks/tools such as Hardhat, Truffle, and Foundry

  • Familiarity with DeFi, NFTs, wallets, and token standards (ERC-20, ERC-721)

  • Knowledge of security best practices and vulnerability mitigation

  • Experience with CI/CD pipelines, cloud platforms, and agile development

Preferred Qualifications

  • Bachelor's or Master's degree in Computer Science or related field

  • Contributions to open-source blockchain projects

  • Relevant blockchain certifications or published projects

Typical Outcomes

  • Deliver secure and scalable blockchain products

  • Improve transaction efficiency and platform reliability

  • Support innovation in decentralized finance, digital assets, and enterprise blockchain solutions

The estimated salary range for a new hire into this position in Virginia is $121,564 USD Annual to $225,762 Annual USD. Salary may vary depending on job-related factors which may include knowledge, skills, experience, and location. Our compensation packages include a competitive base salary and bonus opportunity for all employees contingent on personal and company performance. Our generous benefits program includes medical, dental, vision and life insurance with no premium costs for our employees and their families, and retirement plan plus matching 401k.

What we offer

We give you the freedom to be yourself. We are creating an environment of unique individuals - like you - with different perspectives on the financial industry and the world. A diverse and inclusive environment in which everyone's voice counts and where you can reach your full potential.

We are committed to an inclusive and accessible recruitment process. If you require a reasonable accommodation related to accessibility during your application or interview, please contact accessibility-Sysgroup@swift.com or indicate this in your application.

Please note that this mailbox is not monitored for general recruitment enquiries and should only be used for accessibility or accommodation-related requests (for example related to vision, hearing or neurodiversity).

All requests are confidential and will not affect your candidacy.

Don't meet every single requirement? At Swift, we are dedicated to building a workplace where people can bring their full selves and ideas to the team, so if you are excited about this role, we encourage you to apply even if you do not meet every single qualification.

Apply