Senior Engineer - (Liquidity Platform - Structured OTC)
Who We Are
At OKX, we are firm believers that the future is shaped by technological advancements. Established in 2017, OKX stands out as a prominent cryptocurrency spot and derivatives exchange globally. Leveraging blockchain technology, OKX is dedicated to reshaping the financial landscape by offering a diverse array of innovative products, solutions, and trading tools. Trusted by over 20 million users spanning more than 180 regions worldwide, OKX aims to provide a dynamic platform that enables individuals to delve into the realm of cryptocurrencies. Alongside its top-notch DeFi exchange, OKX also offers OKX Insights, a research division at the forefront of industry trends. With a wide range of crypto products and services and a steadfast focus on innovation, OKX envisions a future where financial access is bolstered by blockchain and decentralized finance.
Focused on fostering a positive workplace culture, we prioritize both our team members and technology. Embracing collaboration and adaptability, we strive for team success, progressive change, and ethical practices. Our commitment lies in creating an inclusive, supportive, and diverse environment for all employees, ensuring that each individual is valued, respected, and presented with opportunities to excel and grow.
About the Opportunity
The Liquidity Platform at OKX leverages cutting-edge technology to enhance all aspects of crypto trading. Through establishing high-speed connectivity to global crypto markets, offering strategy services for automated pricing and trading bots, enabling retrieval and analysis of high-frequency data using state-of-the-art technology, and deploying a micro frontend for efficient trading management, the Liquidity Platform ensures a seamless trading experience for users.
If you are a technology enthusiast enthusiastic about crypto trading and automated algorithmic trading bots, we want to connect with you.
We are in search of a Java Software Engineer to join the Liquidity Platform Structure Product Engineering Team. As part of our team, you will collaborate closely with our liquidity manager to develop strategies using our proprietary strategy toolkit. Your responsibilities will involve working on application quality and risk management, strategic planning and problem-solving, collaborating with product managers, engineers, and liquidity managers, as well as facilitating effective communication.
Responsibilities
- Collaborate with the technical lead, liquidity managers, and product managers to discuss strategies and design technical solutions.
- Take ownership of the production environment for strategy development, enhancing features, and upgrading infrastructure to optimize performance.
- Continuously enhance strategies for stability, scalability, and robustness, ensuring they have auto-recovery capabilities for seamless 24/7 crypto trading.
- Lead projects by maintaining a deep understanding of the technical infrastructure and a comprehensive view of the product and business.
Qualifications
- Strong educational background in STEM fields (Science, Technology, Engineering, Mathematics).
- Extensive experience in application development.
- Proficiency in high-performance Java and asynchronous programming patterns.
- Familiarity with distributed systems and microservice architecture.
- Knowledge of common middleware such as Message Queue, RPC, and cache.
Desired Skills
- Experience in automated testing and continuous integration.
- Strong written and verbal communication skills, along with effective presentation abilities, strategic thinking, and analytical skills.
- Understanding of structured product pricing and quoting systems is advantageous.
Perks & Benefits
- Competitive total compensation package.
- Comprehensive insurance coverage for employees and their dependents.
- Additional benefits will be detailed throughout the application process.
Full Stack Engineer focusing on Blockchain Technologies
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
Senior Blockchain Engineer for RWAHub
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.
Senior blockchain and frontend developer
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.
Senior Blockchain Engineer