React Jobs in Web3

5,319 jobs found

web3.career is now part of the Bondex Logo Bondex Ecosystem

Receive emails of React Jobs in Web3
Job Position Company Posted Location Salary Tags

Crypto.com

Hong Kong, Hong Kong

$77k - $112k

MLabs

Los Angeles, CA, United States

$84k - $150k

Bitgo

Remote

$115k - $117k

Loopscale

New York, NY, United States

$140k - $180k

MLabs

New York, NY, United States

$250k - $300k

Tether

Remote

SwissBorg

Remote

$98k - $150k

kyros.fi

Remote

$54k - $90k

Andalusia Labs

New York, NY, United States

$122k - $150k

Powered by Pioneer

Taipei, Taiwan

$126k - $132k

Weekday

India

$87k - $87k

G2i Inc.

Remote

$84k - $90k

Weekday AI

Remote

$122k - $141k

TheSoul Group

Remote

$84k - $110k

Crypto.com
$77k - $112k estimated
Hong Kong, Hong Kong SAR
Apply

QA Support Engineer (Trading Platform)

Hong Kong, Hong Kong SAR
Engineering – Exchange /
Full-time /
Hybrid

Apply for this job
The Trading Infrastructure team is building a high-performance, front-to-back Trading Platform that supports multi-asset trading. The platform is designed to handle financial instruments with low-latency execution, robust risk controls, and seamless integration across trading, risk, operations, and finance workflows.

The system is built with a modular architecture encompassing core components such as market data feeds, order gateways, execution algorithms, risk engines, UI dashboards, middle office reconciliation, and account infrastructure. We emphasize event-driven, deterministic system design, real-time observability, and strong security.

Our tech stack includes Java (low-latency), Python, Web UI (React/Ag-Grid), Aeron, ClickHouse, Kubernetes, and modern CI/CD tooling, with a strong focus on automation, scalability, and performance. AI-assisted development tools are also leveraged to boost productivity and quality across the team.

Responsibilities

    • Collaborate with QA manager and development teams to understand product features and architecture.
    • Write, execute, and maintain test cases using JBehave/Cucumber frameworks.
    • Contribute to automation testing pipelines to reduce manual regression efforts.
    • Derive meaningful test scenarios based on crypto trading business logic and system workflows.
    • Perform functional, regression, integration, and end-to-end testing for components such as Order Gateway, Execution Algo, Market Data, Risk, and Middle Office.
    • Help monitor and improve test coverage across services.
    • Assist in bug reproduction, investigation, and work with developers on root cause analysis.
    • Participate in regular test cycle planning and release validation processes.

Requirements

    • Must-Have Skills
    • Basic understanding of crypto trading workflows, including exchange matching, order lifecycle, and execution logic.
    • Familiarity with middle office processes such as trade reconciliation.
    • Hands-on experience with BDD frameworks such as Cucumber or JBehave.
    • Experience in writing test cases and test scenarios independently.
    • Some experience or coursework in test automation, preferably using Java-based tools.
    • Familiarity with CI/CD pipelines and source control (e.g., Git).
    • Strong problem-solving and communication skills.
    • Detail-oriented and able to follow through on issues with discipline.

    • Nice-to-Have Skills
    • Knowledge of FIX, WebSocket, or REST protocols used in trading systems.
    • Experience working in Agile environments.
    • Exposure to test coverage reporting tools (e.g., Jacoco, SonarQube).
    • Previous internship or project experience with financial systems or backend testing.
Life @ Crypto.com

Empowered to think big. Try new opportunities while working with a talented, ambitious and supportive team.
Transformational and proactive working environment. Empower employees to find thoughtful and innovative solutions.
Growth from within. We help to develop new skill-sets that would impact the shaping of your personal and professional growth.
Work Culture. Our colleagues are some of the best in the industry; we are all here to help and support one another.
One cohesive team. Engage stakeholders to achieve our ultimate goal - Cryptocurrency in every wallet.
Work Flexibility Adoption. Flexi-work hour and hybrid or remote set-up
Aspire career alternatives through us - our internal mobility program offers employees a new scope.
Work Perks: crypto.com visa card provided upon joining

Are you ready to kickstart your future with us?

Benefits

Competitive salary
Attractive annual leave entitlement including: birthday, work anniversary
Work Flexibility Adoption. Flexi-work hour and hybrid or remote set-up
Aspire career alternatives through us. Our internal mobility program can offer employees a diverse scope.
Work Perks: crypto.com visa card provided upon joining

Our Crypto.com benefits packages vary depending on region requirements, you can learn more from our talent acquisition team.


About Crypto.com:

Founded in 2016, Crypto.com serves more than 150 million customers and is the world's fastest growing global cryptocurrency platform. Our vision is simple: Cryptocurrency in Every Walletâ„¢. Built on a foundation of security, privacy, and compliance, Crypto.com is committed to accelerating the adoption of cryptocurrency through innovation and empowering the next generation of builders, creators, and entrepreneurs to develop a fairer and more equitable digital ecosystem.

Learn more at https://crypto.com.

Crypto.com is an equal opportunities employer and we are committed to creating an environment where opportunities are presented to everyone in a fair and transparent way. Crypto.com values diversity and inclusion, seeking candidates with a variety of backgrounds, perspectives, and skills that complement and strengthen our team.

Personal data provided by applicants will be used for recruitment purposes only.

Please note that only shortlisted candidates will be contacted.

We may use artificial intelligence tools to analyze the content of your Resume/CV against the specific requirements for the position. The purpose is to support our recruitment team in reviewing applications more effectively. These tools assist our recruitment team in their evaluation of your application by providing recommendations, but they do not replace human judgment. Final hiring decisions are ultimately made by humans who consider the insights generated by the tools along with other relevant information. If you would like more details about how your personal information is processed, please contact us.
Apply for this job
⬇
Apply Now

What does a React developer in web3 do?

A React developer in the context of web3 is a developer who is using the React JavaScript library to build user interfaces for decentralized applications (dApps) that run on the Ethereum blockchain

These dApps often use smart contracts to facilitate transactions and other interactions on the Ethereum network

Overall, the role of a React developer in web3 involves using your skills in React development to help build cutting-edge decentralized applications that leverage the power of the Ethereum blockchain

As a React developer in web3, some of your responsibilities might include:

  • Integrating the dApp with the Ethereum blockchain. This might involve using tools like web3.js and Ethers.js to connect to the Ethereum network and interact with smart contracts.
  • Building the user interface for a dApp using React. This could involve creating components for the various elements of the dApp, such as buttons, forms, and other input elements.
  • Implementing features that are specific to decentralized applications, such as handling cryptocurrency transactions and displaying data from the blockchain in a user-friendly way.
  • Collaborating with other members of the development team, such as blockchain engineers and designers, to ensure that the dApp functions properly and meets the needs of the end users.