🟢 OPEN: Smart Contract Engineer

[markholdex]

In This Role You Will

• Transform business logic into smart contracts. Deliver lightweight and snappy smart contracts that are easy to read, integrate, and maintain in the overall product.
• Upgrading. Observe the goal and work with your peers to develop a solution. Deploy it without breaking the user experience.
• Improve performance and implement security measures. Smart contracts are the core of any blockchain application. You’ll be responsible for the code you write and the security measures applied to ensure funds are SAFU.

Hard Requirements

• Proficiency with Solidity and relevant tools. You have at least 2-3 years of experience with smart contracts deployed in production applications. As our products accelerate the DeFi, a high-level understanding of security principles is a must.
• Diligence. For every assignment you accept, follow it so it’s being delivered. If you feel something is off, voice it to the team and provide the solution. Take pride in your work.
• Ownership. For every assignment you accept, follow it so it’s being delivered.

How to apply?

Follow this link and submit the form: https://github.com/holdex/trial/issues/new?template=job-application.yml

[cometsheepboy]

Hi, team.
I am a blockchain engineer with 5+ years of experience in blockchain / distributed systems.
My expertise spans across creating defi protocols, DAOs, dApps, SDK, reward systems, Telegram bots, and so on.
I would like to contribute to the development of smart contract development, as well as backend and frontend work for your team.
Looking forward to the opportunity to collaborate.

[zolotokrylin]

Hello @cometsheepboy,
Would you mind providing a link to your repository that contains your Solidity code contributions? Thank you!

[pandablue0809]

hi @markholdex
I'm a Software Developer specializing in Web Development, Blockchain, and Fintech.
With experience across multiple blockchain networks, I’ve developed dApps, smart contracts, trading bots, and DEXs.

Core Skills:
Frontend: JavaScript, TypeScript, React, Next.js, Vue.js, Tailwind CSS
Backend: Node.js, Express.js, Python, Django, Laravel
Blockchain Development:
Languages: Solidity, Rust, Golang, C++, Move
Experience: Smart Contracts, Trading Bots, DEXs, and DApps on EVM, Solana, Polkadot, Aptos...
Custom Networks: Expertise in building and deploying Layer 1 and Layer 2 blockchains

I am actively seeking new opportunities in my field and would like to inquire if there are any openings that align with my skill set.
I am available to start immediately and look forward to your response.

Best regards

[zolotokrylin]

Hi @pandablue0809
Could you please share a link to your repository with your Solidity code contributions? Thank you!

[wabbcare]

Hi @markholdex
I am interested in this position
How can I get hired?

[wabbcare]

Should I drop my personal info publicly on github?
@matthewvogas

[matthewvogas]

Information that you can share as a portfolio or that helps the HR team know why they should hire you

[wabbcare]

I think, I can drop such info in discord ticket channel or sth like that

[wabbcare]

Hi @matthewvogas
Where should I drop my resume?

[matthewvogas]

Create a private thread with @markholdex on discord and send it to him.

[pwollemi]

Hi @markholdex @zolotokrylin
I'm a solidity developer with 7 yrs of experience and I'd like to work for holex team.
Can we discuss more?
Thanks

[zolotokrylin]

@pwollemi, share examples of your work, please.

[pwollemi]

@zolotokrylin You can check my works here: https://github.com/pwollemi/tavern-contracts
https://github.com/pwollemi/firestarter-contracts

Please let me know if you need more contracts to review. Happy to hear your feedback, Thanks

[zolotokrylin]

@pwollemi What exactly have you done in those repos?

[pwollemi]

@zolotokrylin These are launch project for ERC20 and ERC721 Tokens.
And I developed most of the project, especially on Presale and Vesting Contracts
https://github.com/pwollemi/firestarter-contracts/blob/refund/contracts/Presale.sol
https://github.com/pwollemi/firestarter-contracts/blob/refund/contracts/Vesting.sol

[zolotokrylin]

Feel free to apply here: https://github.com/holdex/trial/issues/new?template=job-application.yml

[blackicow]

Hi, @markholdex @zolotokrylin
I am excited to apply for this role. With over 7 years of experience as a Blockchain Full Stack Developer and specific expertise in smart contract development, I am eager to bring my skills to your team and contribute to delivering secure, high-performing blockchain solutions.

Experience with Smart Contracts
Proficiency with Solidity and Tools:
I have over 5 years of experience writing and deploying production-grade smart contracts. My expertise includes using Solidity, Hardhat, Truffle, and OpenZeppelin libraries. I’ve contributed to DeFi projects like Helix finance and NFT marketplaces, ensuring the contracts are lightweight, modular, and maintainable.

Focus on Security and Performance:
I prioritize security by implementing best practices to prevent vulnerabilities like reentrancy attacks, overflow/underflow issues, and gas inefficiencies. I’ve used auditing tools such as Slither and MythX to identify and resolve potential risks, ensuring user funds are always SAFU.

Collaborative Problem-Solving:
I thrive in team settings where I can collaborate to analyze problems and develop scalable solutions. By voicing concerns and proposing actionable plans, I’ve successfully navigated challenges and delivered results under tight deadlines.

Why I’m Excited About This Role
I am particularly drawn to the mission to accelerate the DeFi space and create innovative blockchain solutions. Your focus on delivering seamless user experiences while maintaining robust security aligns perfectly with my professional ethos.

[zolotokrylin]

Hi @blackicow,
Where can I find your solidity code contributions? Could you please share a link to your code repository? Thanks!

[spearhead1024]

### Blockchain & full stack developer

Dear @markholdex

I am excited to apply for the Smart Contract Developer position at your company. With over 6 years of experience in blockchain development, including extensive hands-on work with Solidity and DeFi protocols, I believe I am well-equipped to contribute to your team.

In my previous roles, I have successfully transformed complex business logic into robust, efficient, and secure smart contracts. I have a deep understanding of the importance of writing clean and maintainable code, ensuring smooth integrations, and continuously improving performance. I take pride in ensuring that all deployments are carried out without breaking the user experience, while also focusing on the security of the contract, as I know how critical it is to safeguard user funds.

I strongly resonate with your focus on diligence and ownership. Throughout my career, I have consistently demonstrated these qualities by taking full responsibility for the smart contracts I develop, ensuring they are delivered on time and to the highest standard. I always remain proactive, raising concerns and proposing solutions whenever needed, to ensure the team’s goals are met efficiently and securely.

With my expertise in Solidity, smart contract security, and DeFi, I am confident that I would be a strong asset to your team. I am enthusiastic about the opportunity to contribute to your company's innovative projects and help elevate your blockchain applications to new heights.

Thank you for considering my application. I look forward to the opportunity to discuss how my skills and experiences can contribute to the success of your team.

Best regards,
@spearhead1024

[zolotokrylin]

Hi @spearhead1024 , feel free to apply here: https://github.com/holdex/trial/issues/new?template=job-application.yml

[CryptoZent]

Hi, @markholdex, @zolotokrylin!!

With over 10 years of development experience and 3 years of hands-on expertise in building, deploying, and maintaining Solidity-based smart contracts in production, I am excited to help you transform your business logic into secure, efficient, and easily maintainable smart contracts. I take pride in writing clean, optimized code that not only meets the immediate goals but also anticipates future scalability needs. I ensure that every contract I write is thoroughly tested, performance-optimized, and secured against vulnerabilities to guarantee SAFU funds.

I bring a passion for continuous improvement and collaboration, ensuring that projects are delivered on time without compromising the user experience. I am committed to providing innovative solutions and taking full ownership of every task I undertake, making sure the project is completed with the utmost attention to detail. My focus on communication and diligent problem-solving ensures that I am always aligned with your team's objectives and contribute to the seamless execution of your product's vision.

Thanks for reading!!!

[zolotokrylin]

@CryptoZent Please share a solidy code repo with your contributions. I would like to see examples of your work. Thank you!

[devmonster0707]

Dear Hi, @markholdex @zolotokrylin

I am excited to apply for the Smart Contract Developer role at your company. With over 9 years of hands-on experience in building and deploying Solidity-based smart contracts, I am eager to contribute my expertise to your innovative blockchain projects.
Why I’m a Great Fit for This Role
Proficiency in Solidity & Blockchain Tools
I have a proven track record of designing and deploying secure, efficient, and upgradeable smart contracts in production environments. My experience spans DeFi platforms, governance tokens, and NFT projects, where I prioritized security principles and performance optimization to deliver scalable solutions.
Tools I’m proficient with include: Hardhat, Truffle, Remix, Ganache for contract development and testing OpenZeppelin Libraries for secure and modular contract designs Ethers.js and Web3.js for integration with decentralized applications
Upgradable Contracts and Versioning
I have successfully implemented proxy patterns and EIP-1967-compliant upgradeable contracts to deliver seamless user experiences during contract upgrades without downtime or disruptions.
Security Expertise
My smart contract development follows best practices for gas optimization, reentrancy protection, and prevention of common vulnerabilities (e.g., integer overflows, front-running). I regularly perform audits using tools like Slither and MythX and conduct thorough manual reviews to ensure funds remain SAFU.
Key Projects
Developed and deployed a yield farming contract integrating with Chainlink oracles for price feeds.
Designed an ERC-20 token contract with deflationary mechanisms and transaction fee redistribution.
I am passionate about delivering lightweight, maintainable, and secure smart contract solutions. I look forward to discussing how my skills and experience can drive success in your DeFi and blockchain initiatives.
Thank you for considering my application. I am eager to contribute to your team and I am now open to do your task.

Best Regards,

[zolotokrylin]

Please, share an example of your code (a link to the repo).

[GreenVaccine]

Hello, @markholdex @zolotokrylin
I am excited to apply for the Smart Contract Developer role. With 7 years of experience in software development—4 of those specializing in blockchain and Solidity—I am confident in my ability to deliver efficient, secure, and maintainable smart contracts for your team.

I have deployed production smart contracts in DeFi applications and am skilled in ensuring both performance and security. My background in full-stack development (MERN stack, Django) complements my blockchain expertise, allowing me to approach each project holistically and deliver high-quality solutions.

I take pride in my work, with a strong focus on diligence, ownership, and collaboration to ensure seamless, secure deployments and improvements. I look forward to the opportunity to contribute to your team and help drive innovation.

Thank you for your time and consideration.

[zolotokrylin]

Please share a solidy code repo with your contributions. I would like to see examples of your work. Thank you!

[vidhanmangla]

Hey, I can't really share any repos, it's work that i'd like to keep private as of now, but happy to talk you through about it or answer any questions.

[zolotokrylin]

Hi @vidhanmangla, I'd love to chat about something! Could you please share your work with me first? That way, I can ask you any questions I might have.

[happy-armin]

Hello!
My name is Nicholas, and I am a Blockchain Developer with over 5 years of experience in designing, developing, and implementing innovative blockchain solutions.

My expertise lies in smart contract development, decentralized applications (dApps), and blockchain architecture design with solidity, rust, move, go, web3 and other software development skills.

I’d like to work in your team and look forward to your response.
Thank you for your consideration.

Best regards,
Nicholas

[zolotokrylin]

Hey! Feel free to apply here: https://github.com/holdex/trial/issues/new?template=job-application.yml

[GreenVaccine]

Dear Nicholas, Thank you for reaching out and expressing your interest in joining our team. Your extensive experience in blockchain development, particularly in smart contracts, dApps, and blockchain architecture, is truly impressive. Skills such as Solidity, Rust, Move, and Web3 are highly valued in our field, and we appreciate the depth of expertise you bring. Currently, we are in the process of reviewing applications for several positions, and your background aligns with the innovative solutions we aim to develop. We will carefully evaluate your profile and let you know the next steps shortly. In the meantime, feel free to share any additional information about your past projects or achievements that you believe would further showcase your skills. Thank you for considering our team as a potential next step in your career. We look forward to connecting with you soon. Best regards, Leon Kai.

…

________________________________ From: happy-armin ***@***.***> Sent: Tuesday, January 21, 2025 12:54 AM To: holdex/holdex-venture-studio ***@***.***> Cc: BlackMask ***@***.***>; Comment ***@***.***> Subject: Re: [holdex/holdex-venture-studio] 🟢 OPEN: Smart Contract Engineer (Discussion #643) Hello! My name is Nicholas, and I am a Blockchain Developer with over 5 years of experience in designing, developing, and implementing innovative blockchain solutions. My expertise lies in smart contract development, decentralized applications (dApps), and blockchain architecture design with solidity, rust, move, go, web3 and other software development skills. I’d like to work in your team and look forward to your response. Thank you for your consideration. Best regards, Nicholas — Reply to this email directly, view it on GitHub<#643 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BNEDQKDYEY3WMC747PQEPIL2LWLETAVCNFSM6AAAAABQ46HKCCVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCOBZGY2TENQ>. You are receiving this because you commented.Message ID: ***@***.***>

[zolotokrylin]

Hey! Feel free to apply here: https://github.com/holdex/trial/issues/new?template=job-application.yml

[0xcoreblock]

hi @markholdex,

I am excited to submit my proposal for the Smart Contract Engineer role. With over 8 years of experience developing and deploying secure and high-performance smart contracts, I am confident my background aligns with your requirements.

Key Highlights:

• Solidity Expertise: I have developed and deployed smart contracts for DeFi projects, including tokenomics, staking, and DEXs, on Ethereum and other EVM chains like Arbitrum and Avalanche.

• Security & Performance: I focus on writing gas-efficient, secure contracts and follow best practices to avoid vulnerabilities

• Upgrades & Maintenance: Experienced in working with upgradeable contracts, handling migrations, and ensuring smooth user experience with minimal disruptions.

• Ownership & Collaboration: I take full ownership of the contracts I develop and proactively address issues. I also enjoy collaborating with teams and ensuring projects are delivered on time and to spec.

I’m excited about the possibility of contributing to your project. Thank you for considering my proposal.

Best regards,
Jeremy

[utoexo]

Hi @markholdex @zolotokrylin

I have been working as a smart contract engineer since 2019 and am looking for new opportunities in Defi for my next career.

After reading the above discussion, it seems like you want to check my public contributions.
Unfortunately, I don't have any. I used a private github as a consultant in my previous organization.
I can share my resume privately and have a meeting for further discussion.

Thank you.

Derrek

[zolotokrylin]

Hey! Feel free to apply here: https://github.com/holdex/trial/issues/new?template=job-application.yml