Quant Developer - Liquidity3
Who We Are
At OKX, we envision a future shaped by technology. Established in 2017, we are transforming global systems through our advanced digital asset exchange, Web3 platform, and blockchain ecosystems. By offering a wide range of innovative products, solutions, and trading tools, we are revolutionizing the financial landscape. Trusted by over 50 million users across 180 countries, OKX enables individuals to explore the world of Web3. With a focus on innovation and a dedication to inclusivity, OKX is committed to providing financial access through blockchain and decentralized finance.
As a global company with over 3,000 employees, we embrace diversity and social responsibility, encouraging active participation in public welfare initiatives. Join us in shaping the future and building a better world!
About the Opportunity
Join our software engineering team tasked with developing trading systems for options market making. This role focuses on agile software development to enhance our trading systems and peripheral services supporting market making.
What You’ll Be Doing
Enhancing and maintaining Java-based trading systems to facilitate market making on the exchange
Specialized in low latency and zero GC computing
Responsible for designing and maintaining derivative pricing and risk control systems, as well as automated trading systems
Collaborating with Product and Exchange teams for system upgrades and expansion
Building expertise in financial knowledge and quantitative skills as applicable to both traditional and crypto trading industries
What We Look For In You
Proficiency in Microservice/API development using Java/SpringBoot
Knowledge of multi-threading and low latency APIs
Familiarity with common middlewares
Experience with relational/nosql databases
Comfort working in a cloud-based Linux shell environment
Strong commitment to delivering high-performance, scalable, and user-friendly products
Nice to Haves
Familiarity with low-level programming such as socket programming
Experience with other languages like Python, JavaScript, C++, or Rust
Understanding of service/library API designs
Background in banking sectors, particularly front office roles
Knowledge or experience in quantitative finance methodologies
Perks & Benefits
Competitive compensation package
Learning and development programs, Education subsidy for personal growth
Team-building activities, company events
Wellness and meal allowances
Comprehensive healthcare coverage for employees and dependents
More benefits to be shared during the hiring process!
Chief Technology Officer (CTO) / Senior Full-Stack Developer (Web3)
We are building a next-generation Web3 social platform designed to redefine how digital communities connect, collaborate, and grow.
Backed by years of experience within the cryptocurrency, blockchain, and digital asset ecosystem, our team has developed deep insights into how founders, developers, investors, creators, and communities interact. This understanding inspired us to create a platform that goes beyond financial applications and focuses on empowering meaningful social engagement.
Our mission is to build a transparent, community-driven social network where users can share ideas, collaborate on projects, discover opportunities, and create lasting relationships. We believe the next evolution of social media will be powered by decentralized technologies while maintaining an exceptional user experience, simplicity, and long-term sustainability.
We are seeking an experienced Chief Technology Officer (CTO) or Senior Full-Stack Developer who is passionate about Web3 and capable of leading the technical vision, architecture, and execution of our platform from the ground up.
Responsibilities
Lead the technical strategy and product architecture.
Design and build scalable backend systems and modern frontend applications.
Develop high-performance APIs and real-time features.
Integrate blockchain technologies, wallets, and Web3 authentication where appropriate.
Build secure, reliable, and maintainable infrastructure.
Collaborate closely with product, design, and leadership teams.
Establish engineering best practices, code quality standards, and development workflows.
Mentor engineers and help grow the technical organization.
Evaluate emerging technologies and implement solutions that improve scalability, security, and user experience.
Requirements
5+ years of professional software development experience.
Strong experience with modern JavaScript/TypeScript ecosystems.
Experience with React, Next.js, Node.js, or similar technologies.
Solid understanding of system architecture, cloud infrastructure, databases, and API design.
Experience building scalable consumer-facing products.
Familiarity with blockchain technologies, Web3 infrastructure, wallets, smart contracts, or decentralized applications.
Strong knowledge of security best practices and application performance optimization.
Excellent problem-solving and communication skills.
Ability to work independently in a fast-paced startup environment.
Preferred Qualifications
Experience building Web3 or crypto products.
Understanding of decentralized identity, token ecosystems, or on-chain social applications.
Experience leading engineering teams or serving in a technical leadership role.
Background in DevOps, CI/CD, Docker, Kubernetes, or cloud platforms such as AWS or GCP.
Experience with real-time messaging, social platforms, or community products.
What We Offer
Competitive full-time compensation.
Opportunity to build a product from an early stage with significant technical ownership.
Flexible and remote-friendly work environment.
Collaborative team focused on innovation and long-term impact.
Work on cutting-edge Web3 technologies and help shape the future of digital communities.
Opportunity for career growth and leadership as the platform scales.
If you are excited about building the next generation of Web3 social experiences and want to make a meaningful impact from the earliest stages, we'd love to hear from you.
Backend Engineer with hands-on blockchain experience
Senior Blockchain Engineer (Cosmos SDK & IBC)
Expectations:
Design custom modules (x/staking, x/rewards, x/merkl)
Implement IBC light clients and relayers
Optimize block time and state pruning
Write comprehensive unit & integration tests (Go test)
Build CLI tools for validators and delegators
Monitor node health and network upgrades
Collaborate with the research team on MEV-resistant ordering
Maintain chain upgrades (v1 → v2) with migration scripts
Write technical documentation for external validators
Nice to have:
Experience with Avalanche Subnets or Polkadot Substrate
Knowledge of HSM and key management
Open-source contributions to Cosmos SDK or related repos
Chinese+English language proficiency
Senior Mobile application developer
But specially, candidate should be native in English.
Team communication is very important.
Please bid US only
Thank you
Web Developer
I need a custom ebay like site for bitcoins or using stock credit on it. I need it to let you pay the user verbally, like an agreement you agree on that's it. I need the site fixed so it can be upgraded in the future.
I need it to be fixed so you can upload something to the site and sell it.
All I ask is keep the buying and selling part verbal agreements only. Like sending the user stock credit virtually.
Bid on things on the website
Sell things on the website
Buy things on the website
All I ask is keep the programming simple and the website in a simple form.
I need a website for the web browser and one for the phone web browsers.
If you can put in a custom user admin for it also, then that will be great.
Thank you,
Chris Clark (666 Encryption, CEO)