Senior Blockchain Developer

At Borderless Software, we believe that people drive everything we do . That’s why we build a work experience designed to help you grow, enjoy what you do, and develop professionally, without borders .

We are looking for a Senior Blockchain Developer with experience who can create engaging, high-impact digital experiences. Would you like to join our team? Work Modality 100% Remote Full-time Language English: B2 level or higher Responsibilities

Blockchain Development Design, develop, and audit secure and efficient smart contracts. Implement solutions on public and/or private blockchain networks. Define security, testing, and contract deployment standards.

Optimize execution costs (gas) and on-chain performance. Actively participate in technical decisions and blockchain architecture definition. Web3 & Integrations Design and integrate decentralized applications (dApps).

Integrate smart contracts with backend and frontend services. Work with wallets, cryptographic signatures, and key management. Design APIs and services that interact with the blockchain. Implement oracle mechanisms and off-chain data consumption.

Architecture & Security Design hybrid on-chain/off-chain architectures. Implement secure smart contract patterns (upgradeability, access control). Prevent common vulnerabilities (reentrancy, overflow, frontrunning).

Define scalability strategies (Layer 2, sidechains, batching).

What We

Expect from You 4–5+ years of experience in software development. 2–3+ years of hands‑on experience in blockchain development. Proficiency in at least one of the following languages: Solidity, Rust, Go, TypeScript, or JavaScript. Proven experience developing production‑grade smart contracts.

Deep knowledge of: EVM and/or alternative blockchains (Solana, Polkadot, Cosmos), applied basic cryptography, transactions, gas, consensus, and validation mechanisms.

Experience with frameworks such as Hardhat, Foundry, or Truffle.

Experience integrating bloc

Back to blog

Common Interview Questions And Answers

1. HOW DO YOU PLAN YOUR DAY?

This is what this question poses: When do you focus and start working seriously? What are the hours you work optimally? Are you a night owl? A morning bird? Remote teams can be made up of people working on different shifts and around the world, so you won't necessarily be stuck in the 9-5 schedule if it's not for you...

2. HOW DO YOU USE THE DIFFERENT COMMUNICATION TOOLS IN DIFFERENT SITUATIONS?

When you're working on a remote team, there's no way to chat in the hallway between meetings or catch up on the latest project during an office carpool. Therefore, virtual communication will be absolutely essential to get your work done...

3. WHAT IS "WORKING REMOTE" REALLY FOR YOU?

Many people want to work remotely because of the flexibility it allows. You can work anywhere and at any time of the day...

4. WHAT DO YOU NEED IN YOUR PHYSICAL WORKSPACE TO SUCCEED IN YOUR WORK?

With this question, companies are looking to see what equipment they may need to provide you with and to verify how aware you are of what remote working could mean for you physically and logistically...

5. HOW DO YOU PROCESS INFORMATION?

Several years ago, I was working in a team to plan a big event. My supervisor made us all work as a team before the big day. One of our activities has been to find out how each of us processes information...

6. HOW DO YOU MANAGE THE CALENDAR AND THE PROGRAM? WHICH APPLICATIONS / SYSTEM DO YOU USE?

Or you may receive even more specific questions, such as: What's on your calendar? Do you plan blocks of time to do certain types of work? Do you have an open calendar that everyone can see?...

7. HOW DO YOU ORGANIZE FILES, LINKS, AND TABS ON YOUR COMPUTER?

Just like your schedule, how you track files and other information is very important. After all, everything is digital!...

8. HOW TO PRIORITIZE WORK?

The day I watched Marie Forleo's film separating the important from the urgent, my life changed. Not all remote jobs start fast, but most of them are...

9. HOW DO YOU PREPARE FOR A MEETING AND PREPARE A MEETING? WHAT DO YOU SEE HAPPENING DURING THE MEETING?

Just as communication is essential when working remotely, so is organization. Because you won't have those opportunities in the elevator or a casual conversation in the lunchroom, you should take advantage of the little time you have in a video or phone conference...

10. HOW DO YOU USE TECHNOLOGY ON A DAILY BASIS, IN YOUR WORK AND FOR YOUR PLEASURE?

This is a great question because it shows your comfort level with technology, which is very important for a remote worker because you will be working with technology over time...