Blockchain Developer

About our client

We are looking for a Senior Blockchain Engineer to join our client's team.

Our client is a next-generation digital finance platform that bridges traditional finance and blockchain innovation to build secure, accessible, and borderless financial infrastructure. Through regulated asset tokenization, investment, and custody solutions, we empower individuals and institutions to confidently participate in the digital economy and unlock new opportunities for growth.

Role Description

Ideal candidate will bring deep expertise in the development and maintenance of blockchain solutions applied to financial markets, including smart contracts, distributed system optimization, and the design of decentralized architectures.

In this role, you'll collaborate closely with cross-functional teams, and ensure the delivery of robust, secure, and scalable Web3 integrations.

This position is ideal for someone who is passionate about blockchain innovation, thrives in dynamic environments, and is ready to drive strategic impact through decentralized technologies.

Required Qualifications

• Proven experience in the design, development, and deployment of smart contracts using Solidity, Web3.js, and Ether.js.
• Mastery of ERC standards such as ERC20, ERC721, ERC1155, and ERC3643.
• Familiarity with and implementation of relevant Ethereum Improvement Proposals (EIPs).
• Proficient in using secure, audited libraries like OpenZeppelin.
• Knowledge of Layer 2 solutions, rollups, and EVM-compatible chains (e.g., Ethereum, Binance Smart Chain), as well as non-EVM chains (e.g., Hedera, Bitcoin, Solana, Algorand, Polkadot).
• Understanding of custodial systems and secure storage solutions for digital assets.
• Experience with blockchain monitoring tools such as Tenderly or Infura.
• Skilled in static and dynamic analysis tools for smart contracts (e.g., MythX, Slither, Echidna).
• Familiarity with self-sovereign identity frameworks and tools, such as Hyperledger Indy.
• Advanced knowledge of consensus protocols, asymmetric cryptography, hashing algorithms, and blockchain security principles.
• Deep understanding of distributed architectures and their application in blockchain-based systems.
• Hands-on experience with Solidity and at least one of the following languages: Rust, Java, or Go.
• Experience with distributed databases optimized for blockchain applications.
• Practical experience working with Docker, Kubernetes, and cloud services such as AWS Lambda and Amazon S3.
• Knowledge of cross-chain protocols like Polkadot, Cosmos, or interoperability bridges.
• Advanced English is a plus, not mandatory.

Tech Stack

• Blockchains: Ethereum, Binance Smart Chain, Hedera, Solana, Polkadot, Bitcoin
• Smart Contract Tools: Solidity, Web3.js, Ether.js
• Programming Languages: Rust, Go, JavaScript
• Token Standards: ERC20, ERC721, ERC1155, ERC3643
• Monitoring & Infrastructure Tools: Tenderly, Infura
• Cryptography: SHA-256, ECDSA
• Containers & Orchestration: Docker, Kubernetes
• Cloud Services: AWS (Lambda, S3)
• Databases: Redis, MongoDB, PostgreSQL

Why apply

• USD payment,
• Health Insurance.
• Generous Time Off, including paid vacation, national holidays, and wellness days to recharge and reset.
• Work Flexibility, with the option for partial remote work and a hybrid schedule that prioritizes output over location.
• Opportunity to define the future of digital finance in Latin America alongside a mission-driven, elite team.