Blockchain Developer
$225K/yr
Conduct code reviews, testing, debugging, and security audits * Optimize blockchain performance, scalability, and transaction efficiency * Integrate blockchain solutions with APIs, databases, and ...
$225K/yr
Conduct code reviews, testing, debugging, and security audits * Optimize blockchain performance, scalability, and transaction efficiency * Integrate blockchain solutions with APIs, databases, and ...
$225K/yr
Conduct code reviews, testing, debugging, and security audits * Optimize blockchain performance, scalability, and transaction efficiency * Integrate blockchain solutions with APIs, databases, and ...
Mountain View, CA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Quick apply
Mountain View, CA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Los Angeles, CA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Quick apply
Los Angeles, CA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Chicago, IL · On-site
... testing frameworks like Mocha or Chai. • Strong programming skills in other languages such as JavaScript, Java, Python, or Go. • Knowledge of ERC20, ERC721, ERC1400 and other protocols • ...
Chicago, IL · On-site
... testing frameworks like Mocha or Chai. • Strong programming skills in other languages such as JavaScript, Java, Python, or Go. • Knowledge of ERC20, ERC721, ERC1400 and other protocols • ...
New York, NY · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Quick apply
New York, NY · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
... testing and preparing work papers is required. • Knowledge of internal accounting controls ... blockchain and digital assets technology ecosystem (smart contracts, block explorers, crypto ...
... testing and preparing work papers is required. • Knowledge of internal accounting controls ... blockchain and digital assets technology ecosystem (smart contracts, block explorers, crypto ...
Boston, MA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
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Boston, MA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Southlake, TX · On-site
$81 - $90/hr
Apply modern engineering practices to build reliable, testable, and observable blockchain services, leveraging AI tools to accelerate protocol analysis, code development, testing, documentation, and ...
Southlake, TX · On-site
$81 - $90/hr
Apply modern engineering practices to build reliable, testable, and observable blockchain services, leveraging AI tools to accelerate protocol analysis, code development, testing, documentation, and ...
Ensure code quality through code reviews, testing, and debugging. * Maintain and optimize the ... Strong passion for Blockchain technologies and protocols. * Extensive knowledge and experience in ...
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Ensure code quality through code reviews, testing, and debugging. * Maintain and optimize the ... Strong passion for Blockchain technologies and protocols. * Extensive knowledge and experience in ...
Ensure code quality through code reviews, testing, and debugging. * Maintain and optimize the ... Strong passion for Blockchain technologies and protocols. * Extensive knowledge and experience in ...
Ensure code quality through code reviews, testing, and debugging. * Maintain and optimize the ... Strong passion for Blockchain technologies and protocols. * Extensive knowledge and experience in ...
New York, NY · On-site
$59.50 - $78.75/hr
Building and unit testing blockchain solutions for a variety of high-profile clients. What's In It For You? * A stimulating and challenging work-environment with talented yet laid-back colleagues;
New York, NY · On-site
$59.50 - $78.75/hr
Building and unit testing blockchain solutions for a variety of high-profile clients. What's In It For You? * A stimulating and challenging work-environment with talented yet laid-back colleagues;
San Francisco, CA · On-site
... testing and maintenance of system corrections. • Provide technical solutions to a wide range of ... Blockchain concepts • Knowledge of Blockchain architecture • Ability to obtain a security ...
San Francisco, CA · On-site
... testing and maintenance of system corrections. • Provide technical solutions to a wide range of ... Blockchain concepts • Knowledge of Blockchain architecture • Ability to obtain a security ...
Sausalito, CA · On-site
$140K - $160K/yr
This includes developing, testing and deploying the backend and smart contracts needed to do so ... Demonstrable strong interest in blockchain, token models and decentralisation and a desire to ...
Sausalito, CA · On-site
$140K - $160K/yr
This includes developing, testing and deploying the backend and smart contracts needed to do so ... Demonstrable strong interest in blockchain, token models and decentralisation and a desire to ...
Sausalito, CA · Remote
$140K - $160K/yr
This includes developing, testing and deploying the backend and smart contracts needed to do so ... Demonstrable strong interest in blockchain, token models and decentralisation and a desire to ...
Sausalito, CA · Remote
$140K - $160K/yr
This includes developing, testing and deploying the backend and smart contracts needed to do so ... Demonstrable strong interest in blockchain, token models and decentralisation and a desire to ...
$120K - $180K/yr
Perform end-to-end security services, including consulting, reviewing, auditing, verifying, testing, and delivering detailed security assessments for blockchain systems such as smart contracts, web3 ...
$120K - $180K/yr
Perform end-to-end security services, including consulting, reviewing, auditing, verifying, testing, and delivering detailed security assessments for blockchain systems such as smart contracts, web3 ...
$120K - $180K/yr
Your efforts will be dedicated to developing, testing, and optimizing LLM-driven AI agents that ... Collaborate with our blockchain security team to develop an LLM-based AI agent for security audit ...
$120K - $180K/yr
Your efforts will be dedicated to developing, testing, and optimizing LLM-driven AI agents that ... Collaborate with our blockchain security team to develop an LLM-based AI agent for security audit ...
$120K - $180K/yr
High diligence and strong attention to detail, especially in multi-step testing and long-running experiments. * Solid understanding of blockchain architecture and node internals (e.g., Cosmos SDK ...
$120K - $180K/yr
High diligence and strong attention to detail, especially in multi-step testing and long-running experiments. * Solid understanding of blockchain architecture and node internals (e.g., Cosmos SDK ...
Implements rigorous and thorough monitoring and testing practices to ensure the security and performance goals of blockchain infrastructure * Designs and verifies cryptographic protocols deployed on ...
Implements rigorous and thorough monitoring and testing practices to ensure the security and performance goals of blockchain infrastructure * Designs and verifies cryptographic protocols deployed on ...
New York, NY · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Quick apply
New York, NY · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Los Angeles, CA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
Quick apply
Los Angeles, CA · Remote
$100K - $250K/yr
At least 5 years of experience with designing, building, testing and implementing highly scalable and distributed backend systems * 3+ years experience in Blockchain in general * 2+ years experience ...
$10.82 - $15.54
7% of jobs
$15.54 - $20.26
16% of jobs
$21.31 is the 25th percentile. Wages below this are outliers.
$20.26 - $24.98
9% of jobs
$24.98 - $29.70
3% of jobs
$29.70 - $34.42
10% of jobs
The median wage is $36.31 / hr.
$34.42 - $39.14
10% of jobs
$39.14 - $43.86
7% of jobs
$43.86 - $48.58
9% of jobs
$49.21 is the 75th percentile. Wages above this are outliers.
$48.58 - $53.30
16% of jobs
$53.30 - $58.02
6% of jobs
$58.02 - $62.74
5% of jobs
$10
$38
$62
A Blockchain Tester is responsible for evaluating and ensuring the quality, security, and performance of blockchain-based applications. They design test cases, execute manual and automated testing, and identify vulnerabilities in smart contracts, consensus mechanisms, and decentralized applications (dApps). Their role involves working with tools like Truffle, Ethereum TestRPC, and various blockchain frameworks to validate functionality and security. Blockchain Testers also collaborate with developers to resolve defects and optimize blockchain networks. Their expertise helps ensure that blockchain systems operate efficiently and securely before deployment.
To thrive as a Blockchain Tester, you need strong analytical skills, proficiency in software testing methodologies, and an understanding of blockchain architectures and smart contracts, often supported by a degree in computer science or a similar field. Experience with blockchain-specific testing tools like Truffle, Ganache, and automated testing frameworks, as well as certifications such as Certified Blockchain Professional (CBP), is highly valuable. Attention to detail, effective communication, and problem-solving abilities help Blockchain Testers stand out in team-driven environments. These skills and qualities are critical for ensuring the security, reliability, and compliance of blockchain-based applications in a rapidly evolving technological landscape.
Blockchain Testers often encounter challenges such as verifying the security and immutability of decentralized systems, testing complex smart contracts, and ensuring interoperability between different blockchain platforms. They address these issues by designing thorough test cases, automating repetitive tasks, and staying updated on the latest vulnerabilities and testing strategies within the blockchain community. Collaboration with developers, product managers, and security specialists is essential to thoroughly vet new features and protocols. As blockchain technology continues to evolve, testers must be proactive in learning about new frameworks and regulatory standards that impact their testing processes.
The most popular types of Blockchain Tester jobs are:
States with the most job openings for Blockchain Tester jobs include:
The top searched job categories for Blockchain Tester jobs are:

$225K/yr
Full-time
Medical, Dental, Vision, Life, Retirement
Re-posted 23 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.