Smart Contract Engineer (Solidity)
Team Overview:
Join our close-knit team within the DeFi sector of OKX, where we focus on pioneering on-chain solutions to enhance the OKX experience for our users. We specialize in bolstering DeFi protocols, crafting inventive DeFi remedies, and identifying growth possibilities in the DeFi realm. Our ongoing projects encompass exciting innovations like lending/borrowing optimization tools and AA wallets. We are on the lookout for dynamic individuals who possess a forward-thinking and creative approach, a genuine enthusiasm for DeFi, and the capability to overcome challenges with effective resolutions. If you are passionate about DeFi and eager to exhibit your skills in a dynamic and imaginative setting, we invite you to be part of our team. Let's work together to shape a better tomorrow.
Job Duties
Plan, create, test, and refine smart contracts on platforms like Ethereum or other established blockchain networks.
Delve into thorough research on diverse DeFi protocols, finalize integration documents, and cooperate with team members to facilitate project launches.
Stay updated on emerging technologies and trends in Web3, engage in product strategizing, and support product rollouts.
Requirements
Hold a Bachelor's degree in Computer Science, Software Engineering, or a related field, or possess equivalent practical experience.
Minimum of 1 year involved in smart contract development, adept in Solidity, and familiar with contract development frameworks like Hardhat, Foundry, among others.
Possess a comprehensive understanding of blockchain technology, encompassing Ethereum, Bitcoin, Solana, and L2 networks.
Acquainted with Assembly and skilled in Gas optimization.
Excellent problem-solving skills, analytical mindset, effective communication, and teamwork proficiency.
Demonstrate a keen interest in blockchain technology and exhibit the readiness to continuously educate oneself on the latest technologies, protocols, and relevant domains.
Preferred Qualifications
Background knowledge in finance, as well as experience in designing or developing DeFi protocols.
Familiarity with contract security and insights into common blockchain attacks.
Deep exploration of diverse DeFi protocols, understanding their functionalities and economic frameworks, such as Uniswap, AAVE, Compound, Synthetix, and others.
Proficiency in English and prior experience working in decentralized projects within international teams or English-speaking environments.
Familiarity with additional contract development languages like Rust, Move, as well as scripting languages such as Python or JS.
🚀 Hiring Solana Developers – Pump.fun
Hi,
I’m reaching out from Valiant Solution LLC. We’re currently working with a U.S.-based client who is an experienced crypto professional and we’re looking for a skilled Solana developer to help build a platform similar to Pump.fun.
We already have a basic codebase from GitHub that the developer can start from, so the project will mainly involve customizing, improving, and completing the functionality rather than building everything from scratch.
Key requirements:
• Experience with Solana smart contracts (Rust / Anchor)
• Knowledge of token launch mechanics and bonding curves
• Experience with Solana Web3 integrations
• Ability to work with an existing codebase and extend it
If this sounds interesting, please reply with:
• Your Solana development experience
• Links to relevant projects or GitHub
• Your availability for a quick discussion
Looking forward to connecting.
Best regards,
Valiant Solution LLC
Junior/Mid Decentralized Infrastructure Engineer
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Senior Decentralized Infrastructure Engineer
Build and scale production-grade decentralized infrastructure: compute networks, protocols, storage layers, orchestration for AI workloads, and open-source primitives that power the next generation of agent systems.Skills &
Requirements:
4+ years in blockchain infra, distributed systems or high-scale compute
Deep experience with Rust / Go / C++ and protocols (libp2p, IPFS, custom consensus, GPU orchestration)
Bonus: self-hosted AI compute, decentralized training or edge inference
Ship fast, own uptime, love extreme performance and cost efficiency
Salary:
$175,000 – $255,000 USD base + big equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug elite builders straight into our fastest portfolio companies.
This is your chance to build the actual rails for autonomous agents and open digital economy at scale. Zero bureaucracy, maximum leverage.
High risk. Zero apologies.
Web3 Fullstack Developer
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.
Junior AI Engineer
Join one of our fast-growing portfolio startups and help build simple AI features. You’ll work with large language models, create basic automations and chat tools, test ideas, fix small bugs, and integrate AI into everyday products.
Skills & Requirements:
0–2 years of experience (fresh graduates or self-taught welcome)
Basic Python knowledge
Interest in AI, LLMs or chatbots (personal projects are a big plus)
Quick learner who enjoys trying new things
Good English for team communication
Salary: $95,000 – $135,000 USD base + equity in the startup + full benefits
Description:
Sirex.vc not only invests — we actively help our portfolio companies hire great people. This Junior AI Engineer role is inside one of our AI-native startups. You’ll get real hands-on experience, learn from the best, and build things users actually use — all with full support from the Sirex team.
High risk. Zero apologies.