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Blockchain Or Web3 Solidity Defi Developer Engineer Jobs in Washington

SWIFT VA

Blockchain Developer

Manassas, VA

$225K/yr

Write secure, efficient smart contracts using languages like Solidity or Rust * Conduct code ... Familiarity with DeFi, NFTs, wallets, and token standards (ERC-20, ERC-721) * Knowledge of security ...

SWIFT

Blockchain Developer

Manassas, VA · On-site

$225K/yr

Write secure, efficient smart contracts using languages like Solidity or Rust * Conduct code ... Familiarity with DeFi, NFTs, wallets, and token standards (ERC-20, ERC-721) * Knowledge of security ...

SWIFT

Blockchain Test Engineer - Hybrid

Manassas, VA · On-site

$124K/yr

Proficiency in at least one programming language commonly used in blockchain development or testing (e.g., Python, JavaScript, Go, Java, Solidity) * Experience with test automation frameworks and ...

SWIFT VA

Blockchain Operations Engineer

Manassas, VA

$225K/yr

Or equivalent work experience. * Certifications in cloud, DevOps, or blockchain technologies ... Knowledge of smart contract technologies such as Solidity, Rust, Web3.js / Ethers.js * Experience ...

Apex Informatics

Blockchain Engineer

Manassas, VA · On-site

Blockchain Engineer Remote Design, develop & test SWIFT software using Smart contracts, Typescripts, Solidity, JSON, REST APIs & AWS. Analysis and design of existing components. Support setup of test ...

Swift

Blockchain Developer

Manassas, VA · On-site

... Developer or in a similar role focusing on DLT. • Experience in at least one blockchain development platform (e.g., Solidity for Ethereum, Go for Hyperledger Fabric, Kotlin/Java for Corda/Besu ...

SWIFT

Blockchain Operations Engineer

Manassas, VA · On-site

$225K/yr

Or equivalent work experience. * Certifications in cloud, DevOps, or blockchain technologies ... Knowledge of smart contract technologies such as Solidity, Rust, Web3.js / Ethers.js * Experience ...

SWIFT VA

Blockchain Developer

Manassas, VA

$66K - $124K/yr

Proven experience (2+ years) as a Blockchain Developer or in a similar role focusing on DLT. * Experience in at least one blockchain development platform (e.g., Solidity for Ethereum, Go for ...

AnaVation

Senior Cryptocurrency Engineer

Washington, DC · Remote

$118K - $162K/yr

... coins, DeFi platforms, and crosschain ecosystems. * Develop algorithms, methods, and analytic ... Proficiency with one or more of smart contracts, Solidity, EVM internals, and blockchain APIs.

AnaVation

Senior Cryptocurrency Engineer

Washington, DC · Remote

$107K - $146K/yr

... coins, DeFi platforms, and cross‑chain ecosystems. * Develop algorithms, methods, and analytic ... Proficiency with one or more of smart contracts, Solidity, EVM internals, and blockchain APIs.

SWIFT

Blockchain Developer

Manassas, VA · On-site

$101K - $188K/yr

Proven experience (3+ years) as a Blockchain Developer or in a similar role focusing on DLT. * Strong proficiency in at least one blockchain development platform (e.g., Solidity for Ethereum, Go for ...

SWIFT VA

Blockchain Developer

Manassas, VA

$101K - $188K/yr

Proven experience (3+ years) as a Blockchain Developer or in a similar role focusing on DLT. * Strong proficiency in at least one blockchain development platform (e.g., Solidity for Ethereum, Go for ...

SWIFT

Blockchain Developer

Manassas, VA · On-site

$66K - $124K/yr

Proven experience (2+ years) as a Blockchain Developer or in a similar role focusing on DLT. * Experience in at least one blockchain development platform (e.g., Solidity for Ethereum, Go for ...

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Blockchain Or Web3 Solidity Defi Developer Engineer information

What is the difference between Blockchain Or Web3 Solidity Defi Developer Engineer vs Blockchain Or Web3 Solidity Defi Developer Engineer?

AspectBlockchain Or Web3 Solidity Defi Developer Engineer

Since both titles are identical, there is no difference in roles, skills, or industry usage. They typically require knowledge of blockchain development, smart contracts, Solidity, and DeFi protocols, working in blockchain or crypto companies. Both roles focus on developing decentralized applications and smart contracts on blockchain platforms.

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Blockchain Developer

SWIFT VA

Manassas, VA

$225K/yr

Other

Medical, Dental, Vision, Life, Retirement

Posted 15 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