Lumixion is a forward-thinking software agency dedicated to helping businesses innovate with clarity and confidence. We design and build high-performing digital products that turn ideas into reality, from scalable web and mobile applications to intelligent AI-powered solutions.
Our team brings deep expertise across product design, engineering, automation, and blockchain development. Whether you need a seamless user experience, a custom smart contract, or a complete digital transformation, we craft solutions that are intuitive, secure, and built to grow with your business.
At Lumixion, we believe in pairing bold thinking with precise execution. We partner closely with clients to understand their vision, refine their strategy, and deliver technology that creates real, measurable impact.
We are looking for a skilled DApp & Smart Contract Developer to enhance and stabilize our client’s crypto vesting platform. You will diagnose existing issues, improve performance, deliver new features, and ensure seamless coordination between smart contracts and the front end. This role is ideal for someone who thrives in fast-moving environments, values clean and secure code, and understands the nuances of blockchain-based application architecture. Responsibilities Diagnose and resolve issues in vesting smart contracts and their front-end integrations. Implement new features and system enhancements to improve UX and overall platform performance. Maintain smooth interaction between the web interface and deployed smart contracts. Conduct testing, audits, and deployments across testnet and mainnet environments. Optimize contract logic for performance, security, and gas efficiency. Collaborate with our engineering team to identify pain points and deliver stable, secure solutions. Requirements Proven experience building full-stack decentralized applications. Strong proficiency in Solidity, JavaScript/TypeScript, and modern frameworks (Angular, React, or Vue). Hands-on experience with Hardhat or Foundry for smart contract development and testing. Familiarity with Ethers.js or Web3.js for blockchain interaction layers. Solid understanding of Ethereum, Polygon, or other EVM-compatible chains. Experience integrating wallets such as MetaMask and managing on-chain/off-chain data flows. Strong debugging skills, attention to detail, and a security-first mindset. Nice to Have Experience with smart contract security audits and gas optimization techniques. Knowledge of Node.js-based backend services or API integration layers. Previous experience with vesting, staking, or token distribution mechanisms. Project Scope This role supports a short-to-mid-term initiative focused on stabilizing and enhancing an existing crypto vesting platform. High-performing developers may have opportunities for ongoing collaboration across additional blockchain and product engineering projects. Hiring Process Technical Assessment - Selected candidates will complete a short, clearly scoped technical exercises designed solely to evaluate coding approach and smart contract knowledge. CTO interview - A final discussion to evaluate technical reasoning, architectural thinking, and team fit. Successful candidates may receive an offer through Contra following this conversation.