Senior Engineer - Application Security
Hong Kong
Full time
Office
Compensation is not specified
Role
Security Engineer
Description
Who We Are
At OKX, we believe in the transformative power of technology. Established in 2017, OKX stands as a prominent cryptocurrency exchange offering both spot and derivatives trading services. Leveraging blockchain technology, we have revolutionized the financial landscape by providing a wide range of innovative products and trading tools. With a user base exceeding 20 million across 180 regions worldwide, OKX is dedicated to creating an inclusive platform for individuals to explore the realm of cryptocurrency. Alongside our premier DeFi exchange, OKX also offers OKX Insights, a research division at the forefront of industry trends in the crypto space. Committed to ongoing innovation, OKX envisions a future of financial inclusivity underpinned by blockchain technology and the principles of decentralized finance.
We prioritize both technology and talent, fostering a culture of teamwork, adaptability, and ethical conduct. Our mission is to cultivate a supportive and diverse environment where every individual, regardless of background, is valued, respected, and empowered to grow and excel.
About the Opportunity
Responsibilities:
- Develop and maintain efficient backend systems to support client security initiatives.
- Contribute to technical architecture and system design to ensure system scalability and stability.
- Collaborate with team members to address technical obstacles and deliver high-quality code promptly.
- Enhance system performance and reliability for improved user experience.
- Review code to uphold security and quality standards.
- Keep abreast of industry trends and drive enhancements in the team's technical proficiency.
Requirements:
- Bachelor’s degree or higher in computer science, information security, communications, or a related field.
- Minimum of 5 years' experience in backend development, with expertise in Golang, Java, or Python.
- Proficiency in backend development frameworks and tools like Gin, Echo, etc.
- Solid background in database design and optimization, with knowledge of SQL and NoSQL databases.
- Familiarity with network protocols, security mechanisms, and client security vulnerabilities.
- Understanding of microservices architecture and containerization technologies including Docker and Kubernetes.
- Strong problem-solving abilities and team collaboration skills.
- Excellent communication skills for effective interaction with team members and other departments.
- Prior experience in relevant domain projects is advantageous.
Skills Required
OKX
Website
www.okx.comCompany size
Not specified
Location
United States
Description
Not specified
Lumixion.io
Frontend Web3 Engineer | React | Solidity, Ethereum, Solana
Remote, USA
Remote, USA
Full time
Remote
About the RoleWe are seeking a React Web3 Developer to build decentralized applications and integrate smart contracts across multiple blockchain platforms. Candidates may have experience with Solana, Ethereum, Solidity, or similar smart contract technologies.ResponsibilitiesDevelop and maintain Web3 applications using ReactIntegrate and interact with smart contracts on various blockchainsImplement wallet connections and on-chain interactionsCollaborate with product and blockchain teamsWrite clean, secure, and well-documented codeRequirementsStrong experience with React and modern frontend developmentExperience with any smart contract platform (Solana, Ethereum, Solidity, or similar)Familiarity with Web3 libraries (ethers.js, web3.js, wagmi, etc.)Solid understanding of blockchain fundamentals and dApp architectureAbility to work independently with strong communication skillsPreferredExperience with DeFi, NFT, or multi-chain applicationsFull-stack Web3 experienceHiring ProcessTechnical TaskShortlisted candidates will be given access to a public repository. The task is to:Review the codebase and suggest improvements and optimizationsShare recommendations and best practices based on the existing implementationInclude screenshots of the terminal and browser as references where applicableSubmissions must be shared as:A Google Docs link, orA PDF documentTechnical Interview with CTOA detailed technical interview will be conducted with our CTO. Topics will include:In-depth discussion of the candidate’s understanding of the reviewed codebaseApproach to development challenges and best practicesCultural and Work Environment Interview with CEOThe final stage involves a meeting with the CEO to evaluate:Cultural fit within the companyWork ethic and attitudeAlignment with company values and visionExpectations regarding work environment and team collaboration
Payment in Crypto
Abbey Web3
Futures Trading KOL
Part time
Remote
A new centralized Exchange is currently Recruiting Futures Trading KOL.
KOL TRADER BENEFIT PACKAGE
1. We will offer you a 45% rebate commission.
2. Trading funds into your account, to start trading.
3. We are offering a one time upfront fee. This fee is released in parts based on your weekly trading volume for a period of 4weeks. We expect a weekly trading volume of $2,500,000 weekly. If your weekly volume falls below the target, you still receive a proportional payout plus your 45% rebate commission. The upfront fee applies only in the first month. From the second month onward, you earn only on the 45% rebate commission.
4. Your community receives a signup bonus when they join and trade.
5. You get full 24 7 customer support.
6. You get priority access to crypto events based on your trading volume performance.
With these Offer:
-You make profit from your trading funds and withdraw it anytime.
- You received your weekly fee as agreed.
- You still get your rebate commission from your followers trade.
Feel free to reach out with the trading volume you have, we are ready to cooporate.
You can reach out to us on TG: @Abbey_Blockchain
KOL TRADER BENEFIT PACKAGE
1. We will offer you a 45% rebate commission.
2. Trading funds into your account, to start trading.
3. We are offering a one time upfront fee. This fee is released in parts based on your weekly trading volume for a period of 4weeks. We expect a weekly trading volume of $2,500,000 weekly. If your weekly volume falls below the target, you still receive a proportional payout plus your 45% rebate commission. The upfront fee applies only in the first month. From the second month onward, you earn only on the 45% rebate commission.
4. Your community receives a signup bonus when they join and trade.
5. You get full 24 7 customer support.
6. You get priority access to crypto events based on your trading volume performance.
With these Offer:
-You make profit from your trading funds and withdraw it anytime.
- You received your weekly fee as agreed.
- You still get your rebate commission from your followers trade.
Feel free to reach out with the trading volume you have, we are ready to cooporate.
You can reach out to us on TG: @Abbey_Blockchain
Payment in Crypto
XanaNetworo
Crypto Outreach Hunter – High Commission (Remote)
Full time
Remote
XanaNetwork (@xananetwork) is hiring 5–8 outreach hunters. We just relaunched — same core team with a track record of multi-hundred-million caps and six-figure holder bases. Your job:• Send 300–600 high-quality cold DMs per day on Twitter (DexScreener, Pump.fun, new launches)• Get warm replies → we close Pay (performance-first):• $800–$1,200 USD monthly base• + $1,500–$4,000 bonus per signed client• Top hunters clear $8k–$15k+/mo on commission• Paid trial $100 flat — first 8 who hit 5+ warm replies get hired No experience needed — we’ll train hungry people. Apply → DM @mainnetmike on Twitter with:1. How many DMs you can send daily2. Why you want the role Hungry & coachable only.
Payment in Crypto
Chi Ng.
Global Business Development Manager (KOL Partnerships) - LATAM
San Miguel, El Salvador +2
San Miguel, El Salvador +2
Full time
Remote
BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English and Spanish. Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.
Payment in Crypto
Chi Ng.
Global Business Development Manager (KOL Partnerships) - MENA
Cairo, Egypt +5
Cairo, Egypt +5
Full time
Remote
BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English and Arabic. Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.
Payment in Crypto