AI Lead Engineer (Anti-Fraud/Scammer)

Singapore
Full time
Office
Compensation is not specified
Role
Machine Learning Engineer
Description

Company Overview:

We are a forward-thinking organization at the forefront of leveraging technology to redefine the future landscape. Our company, established in 2017, is dedicated to transforming global systems through our state-of-the-art digital asset exchange, Web3 platform, and blockchain ecosystems. With a focus on offering diverse and advanced products, solutions, and trading tools, we stand as a trusted platform with over 50 million users across more than 180 countries worldwide. We envision a financial future supported by blockchain and decentralized finance, aiming to provide financial access to all.

Our company values innovation in product creation and actively engages in social responsibility initiatives, encouraging employees to participate in community activities. With a globally distributed team of over 3,000 individuals, we believe that embracing diversity and fostering inclusion generates enduring value for the industry.

Overview:

We are in search of a proficient Lead Engineer to drive the implementation of sophisticated AI technologies, notably transformer models, to combat fraudulent activities efficiently. This critical role demands an AI expert in fraud detection systems, capable of integrating intricate models into our risk infrastructure to uphold and enhance platform security.

Primary Responsibilities:

  • Lead the development and deployment of advanced AI models, particularly focusing on transformer models for the detection and mitigation of fraudulent activities.
  • Utilize transformer models to analyze sequential user data, enabling a deeper understanding of behavioral patterns indicative of potential fraud.
  • Collaborate with data engineering teams to optimize data inputs and train transformer models to secure high accuracy in fraud detection.
  • Continuously assess and refine AI model performance, incorporating the latest machine learning and AI techniques.
  • Demonstrate the models to stakeholders in alignment with their expectations, and provide mentorship to team members on AI technologies and methodologies. Oversee anti-fraud work planning and project management.

Required Qualifications:

  • Possession of an advanced degree in Computer Science, Data Science, or related fields.
  • Minimum of 10 years in technology roles, including a robust experience of at least 5 years in fraud detection and prevention, with hands-on involvement in AI and machine learning technologies.
  • Demonstrable expertise in deep learning model development, user behavior analytics, and fraud detection implementations.
  • Hands-on practice with feature design, transformer, and clustering algorithms.
  • Strong leadership skills in managing technical teams and delivering complex systems focused on fraud prevention and risk mitigation.
  • Proficiency in problem-solving, strategic thinking, and communication is essential.

Desired Qualifications:

  • Exposure to startup environments, fast-paced companies, or reputable technology firms.
  • Previous research publications or contributions to cybersecurity domains, particularly concerning fraud detection and platform security.

Benefits:

  • Competitive total compensation package.
  • Learning and development programs, with education subsidies for employee growth.
  • Various team-building initiatives and engaging company events.
  • Additional perks to be discussed throughout the application process.
Skills Required
Avatar
OKX
Company size
Not specified
Location
United States
Description
Not specified

More Full-time Jobs

Show more

Full Stack Engineer focusing on Blockchain Technologies

Full time
Remote
Worklo is building the future of professional services automation by combining our core PSA platform with a blockchain-powered salary distribution system. The platform automates compensation based on project data, time entries, role assignments, milestones, and secure on-chain payroll execution.
We are looking for a highly capable Full Stack / Blockchain Engineer who can own both SaaS product development and blockchain infrastructure. This is a high-ownership role where you will help shape Worklo PSA and our blockchain payroll architecture from the ground up.
Key Responsibilities
* Build full-stack product features using Next.js, TypeScript, Node.js/Express, Supabase, PostgreSQL, React, shadcn/ui, and Tailwind CSS
* Design secure APIs, database schemas, authentication flows, and Supabase RLS policies
* Develop Solidity smart contracts for salary calculation and automated payroll distribution
* Build blockchain integrations for wallet registry, MetaMask/WalletConnect, payroll execution, and event syncing
* Deploy and manage smart contracts on Polygon or other EVM-compatible networks
* Implement dashboards for payroll visibility, wallet management, and transaction history
* Write tests for smart contracts using Hardhat, Foundry, or similar tools
* Improve performance, security, observability, and overall system architecture
Requirements
* 5+ years of full-stack software development experience
* 5+ years of blockchain development experience with deployed smart contracts
* Strong skills in TypeScript, Node.js, React, Next.js, PostgreSQL, and REST APIs
* Strong Solidity knowledge, including access control, reentrancy protection, gas optimization, and upgradeability
* Experience with ethers.js, viem, ERC-20 tokens, stablecoins, and EVM-compatible networks
* Ability to work independently in a remote-first, async startup environment
Nice to Have
* Experience with Supabase, Next.js App Router, React Server Components, Foundry, Hardhat, OpenZeppelin, The Graph, DeFi systems, multi-sig wallets, or multi-tenant SaaS platforms
Payment in Crypto
7,000
Monthly
See details

Senior Blockchain Engineer for RWAHub

Florida City, USA
Florida City, USA
Full time
Remote
The Role
We are hiring a Senior Blockchain Developer to design and build smart contract systems across multiple client and internal projects.
You will work on a variety of blockchain applications - from DeFi protocols to tokenized systems and Web3 platforms - ensuring high standards in security, scalability, and architecture.
This is a senior-level, hands-on role with exposure to multiple products and industries.
What You’ll Do
Design, develop, and deploy smart contracts using Solidity
Implement token standards (ERC-20, ERC-721, ERC-1155) and custom logic
Build and maintain contract architectures across multiple projects
Ensure security, audit readiness, and upgradeability
Optimize gas usage and performance
Collaborate with backend and frontend teams for integrations
Participate in code reviews and technical decision-making
Contribute to documentation and internal best practices
What We’re Looking For
4+ years of experience in blockchain / smart contract development
Strong expertise in Solidity and EVM-based ecosystems
Experience with Ethereum and L2s (Polygon, Arbitrum, Optimism)
Solid understanding of smart contract security and vulnerabilities
Experience with Hardhat, Foundry, or similar frameworks
Strong software engineering fundamentals (testing, Git, CI/CD)
Ability to work across multiple projects and adapt quickly
Nice to Have
Experience with DeFi protocols, staking, or token economies
Experience working with auditors or security reviews
Familiarity with upgradeable contracts (proxy patterns)
Backend experience (Node.js / TypeScript)
Experience in client-facing or consulting environments
Tech Stack
Solidity · Ethereum · Polygon · Arbitrum
Hardhat / Foundry · Node.js · TypeScript
React · ethers.js · IPFS
Why Join
Work across a diverse portfolio of blockchain projects
Exposure to both client work and internal ventures
Opportunity to influence architecture and technical direction
Collaborative, globally distributed team
Fast-paced environment with continuous learning
What Success Looks Like
Secure, production-ready smart contracts delivered across projects
Successful audits with minimal critical issues
Scalable and reusable contract architectures
Strong collaboration with cross-functional teams
Consistent delivery across multiple initiatives
How to Apply
Please submit:
Resume or LinkedIn
GitHub profile (required)
Examples of smart contracts or blockchain project
Apply Directly:
https://rwahubassets.com/
Applications & Inquiries:
support@rwahubassets.com
Equal Opportunity
We value diversity and are committed to building an inclusive environment.
Payment in Crypto
11,667-18,333
Monthly
See details

Senior blockchain and frontend developer

Part time
Remote
Currently, our team is working on crypto betting website development that is for old customer who lives in Luxembourg.
There are 7 developers in our team right now.
We just started Front-UI development but our current progress is getting slowly so we are looking for developers who has experience in Blockchain development.
For this project, you need to have proven experience in React, TypeScript, Node.js and Web3.js for Front-end Development or Solidity for Smart Contracts Development.
If you are interested, then we can discuss more details.
Thanks Regards. 
Payment in Crypto
41.67
Monthly
See details

Senior Blockchain Engineer

Full time
Remote
One More Game is looking for a Senior Blockchain Engineer to help build secure and scalable blockchain systems for our web3 gaming products. This role is focused on smart contract development, blockchain integration, and technical problem-solving in a remote, fast-moving environment. You will work closely with our engineering and product teams to design, build, test, and maintain blockchain features that support real users and game economies. ResponsibilitiesDesign, develop, test, and deploy smart contracts.Build secure and efficient blockchain integrations for web3 applications.Work with product and engineering teams to implement on-chain features.Review contract logic for performance, reliability, and security.Write clear technical documentation and testing coverage.Support debugging, maintenance, and upgrades for deployed contracts. Requirements3+ years of professional software engineering experience.Strong experience with Solidity and EVM-compatible blockchains.Hands-on experience with smart contract testing and deployment tools such as Foundry or Hardhat.Good understanding of blockchain architecture, wallets, transactions, and contract interactions.Experience building production blockchain applications.Strong communication skills and ability to work remotely. Preferred QualificationsExperience with GameFi, NFTs, DeFi, or Layer 2 solutions.Familiarity with backend or frontend integration for blockchain apps.Experience working in a remote startup environment. What to SubmitPlease include:GitHub profile.LinkedIn profile.A brief summary of your most relevant blockchain project.A short explanation of your role and technical contribution. About One More GameOne More Game is a US-based, fully remote company building blockchain-powered gaming infrastructure and digital experiences.
Payment in Crypto
10,000-15,000
Monthly
See details

Web3 & Smart contract developer

Silverstone, UK
Silverstone, UK
Part time
Remote
The project is being developed around a Web3 trading infrastructure platform. As part of our long-term vision, the UK team at Iress is building a scalable, secure, and production-ready platform for trading, staking, and DeFi functionality. To support this effort, we are looking for experienced blockchain developers who can contribute to smart contract development, architecture, security, and overall platform implementation. We are currently in the team-building phase and identifying developers whose experience aligns with the technical requirements of the project. Selected candidates will be invited to discuss the project roadmap, responsibilities, and collaboration model with the UK technical leadership team.
Payment in Crypto
500-667
Monthly
See details