$225K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
$225K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$225K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$225K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
$225K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
$225K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
... Solidity, JSON, REST APIs. * Build and maintain blockchain infrastructure and backend services ... Collaborate with product, DevOps, and security teams. * Document technical designs, development ...
Quick apply
... Solidity, JSON, REST APIs. * Build and maintain blockchain infrastructure and backend services ... Collaborate with product, DevOps, and security teams. * Document technical designs, development ...
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 ...
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 ...
Rockville, MD · On-site
$150 - $210/hr
We engage with a wide range of organizations - from DeFi protocols and Web3 infrastructure teams ... Engineer, or Protocol Engineer. Have a strong grasp of blockchain fundamentals and Web3 ...
Rockville, MD · On-site
$150 - $210/hr
We engage with a wide range of organizations - from DeFi protocols and Web3 infrastructure teams ... Engineer, or Protocol Engineer. Have a strong grasp of blockchain fundamentals and Web3 ...
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 ...
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 ...
Manassas, VA · On-site
$66K - $124K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$66K - $124K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$101K - $188K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$101K - $188K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$66K - $124K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$66K - $124K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Washington, DC · On-site
$150 - $210/hr
Medical
Dental
Vision
Life
Retirement
PTO
... 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.
Washington, DC · On-site
$150 - $210/hr
Medical
Dental
Vision
Life
Retirement
PTO
... 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.
Manassas, VA · On-site
$101K - $188K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$101K - $188K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$66K - $124K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$66K - $124K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$101K - $188K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Manassas, VA · On-site
$101K - $188K/yr
Medical
Dental
Vision
Life
Retirement
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 ...
Washington, DC · Remote
$118K - $162K/yr
Medical
Dental
Vision
Life
Retirement
PTO
... 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.
Washington, DC · Remote
$118K - $162K/yr
Medical
Dental
Vision
Life
Retirement
PTO
... 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.
Washington, DC · On-site
$140 - $180/hr
Medical
Dental
Vision
Life
Retirement
PTO
... 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
Washington, DC · On-site
$140 - $180/hr
Medical
Dental
Vision
Life
Retirement
PTO
... 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
Washington, DC · On-site +1
$118K - $162K/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.
Quick apply
Washington, DC · On-site +1
$118K - $162K/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.
Reston, VA · On-site
As an Engineering Manager, you will lead our talented engineering team and work closely with ... Background in managing teams working on AI/ML pipelines, LLM tooling, or Web3/blockchain ...
Reston, VA · On-site
As an Engineering Manager, you will lead our talented engineering team and work closely with ... Background in managing teams working on AI/ML pipelines, LLM tooling, or Web3/blockchain ...
Reston, VA · On-site
As an Engineering Manager, you will lead our talented engineering team and work closely with ... Background in managing teams working on AI/ML pipelines, LLM tooling, or Web3/blockchain ...
Quick apply
Reston, VA · On-site
As an Engineering Manager, you will lead our talented engineering team and work closely with ... Background in managing teams working on AI/ML pipelines, LLM tooling, or Web3/blockchain ...
Washington, DC · On-site
$95K - $120K/yr
... blockchain architecture, and uses of cryptocurrency and DeFi. * Experience in financial crime compliance and risk management within the fintech, financial services or Web3/crypto space. Notably, a ...
Quick apply
Washington, DC · On-site
$95K - $120K/yr
... blockchain architecture, and uses of cryptocurrency and DeFi. * Experience in financial crime compliance and risk management within the fintech, financial services or Web3/crypto space. Notably, a ...
| Aspect | Blockchain 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.
For Blockchain Or Web3 Solidity Defi Developer Engineer jobs in Washington, the most frequently searched job titles are:
The top searched job categories for Blockchain Or Web3 Solidity Defi Developer Engineer jobs in Washington are:
Cities in Washington with the most Blockchain Or Web3 Solidity Defi Developer Engineer job openings:
$225K/yr
Full-time
Medical, Dental, Vision, Life, Retirement
Re-posted 6 days ago
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.
University degree in computer science or related field. Or equivalent work experience.
Experience10 to 12 years' experience in systems development.
Key ResponsibilitiesDesign 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
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
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.
