| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Visa | London, United Kingdom | $12k - $61k | |||
Circle | San Francisco, CA, United States | $200k - $265k | |||
Obol | Lisbon, Portugal |
| |||
Experfy Inc | Boston, MA, United States | $98k - $110k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
Atomic | United States | $125k - $160k | |||
Obol | Lisbon, Portugal |
| |||
Qredo | Madrid, Spain | $123k - $219k | |||
Qredo | Paris, France | $90k - $150k | |||
Qredo | Madrid, Spain | $63k - $80k | |||
Qredo | Lisbon, Portugal | $57k - $112k | |||
Qredo | Lisbon, Portugal | $31k - $81k | |||
Qredo | Amsterdam, Netherlands | $98k - $120k | |||
Qredo | Madrid, Spain | $81k - $90k | |||
Qredo | Madrid, Spain | $86k - $100k | |||
ParaSwap | Lisbon, Portugal | $63k - $87k |
Company Description
Visa is a world leader in digital payments, facilitating more than 215 billion payments transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable and secure payments network, enabling individuals, businesses and economies to thrive.
When you join Visa, you join a culture of purpose and belonging â where your growth is priority, your identity is embraced, and the work you do matters. We believe that economies that include everyone everywhere, uplift everyone everywhere. Your work will have a direct impact on billions of people around the world â helping unlock financial access to enable the future of money movement.
Join Visa: A Network Working for Everyone.
Job Description
The Visa Crypto Team is building the next generation of products to facilitate commerce in everyone's digital and mobile lives. Our focus is to build intuitive features that expose profound new value for our customers. We are hiring for experienced Software Engineers who are proficient programmers, have experience in building highly available & scalable backend systems and are passionate about the Web3 stack of technologies.
Essential Functions:
- Be a member of a highly skilled team seeking systematic approaches to improve engineering productivity, efficiency, effectiveness, and quality of software
- Work cross-functionally with our product teams, other engineering teams, operations, and infrastructure teams to design, develop and implement global products
- Write good quality code across various programming languages
- Document design tradeoffs and long-term architecture decisions
This is a hybrid position. Hybrid employees can alternate time between both remote and office. Employees in hybrid roles are expected to work from the office 2-3 set days a week (determined by leadership/site), with a general guidepost of being in the office 50% or more of the time based on business needs.
Qualifications
Basic Qualifications
⢠A Web3 stack enthusiast
Preferred Qualifications
⢠Good backend programming experience using either Java or NodeJS
⢠Experience in building scalable, high-performing distributed systems including APIs, orchestration layers, 3rd party integrations, monitoring & alerts and systems requiring high availability
⢠Experience in the entire Secure Software Development Life cycle including version control, CI/CD.
⢠Experience with testing frameworks like Truffle, Mocha, hardhat
⢠Good understanding of Layer 1 and Layer 2 solutions and experience writing smart contracts using Solidity.
⢠Good understanding of public and permissioned DLT networks, security protocols, private key custody etc. Understand the new Ethereum enhancements, e.g. ERC-4337
⢠Full-stack software development experience a plus
⢠Motivated and fast learner of new technologies to solve complex problems
Additional Information
What is the meaning of Layer 2?
Layer 2 in the context of cryptocurrency and blockchain technology refers to a secondary framework or protocol that is built on top of an existing blockchain system (the main chain or Layer 1)
The primary purpose of Layer 2 solutions is to solve the scalability and speed issues that many blockchains face, especially those that have become popular and heavily used, like Ethereum
Here are the key aspects of Layer 2 solutions:
- Scalability Enhancement: They help in scaling the main blockchain by handling transactions off the main chain. This reduces the burden on the main chain, allowing for faster and cheaper transactions.
- Types of Layer 2 Solutions: There are various forms of Layer 2 solutions, including state channels, sidechains, plasma chains, and rollups. Each has its own mechanism for interacting with the main chain and handling transactions.
- State Channels: These involve two parties engaging in numerous transactions outside of the main chain, which are then consolidated into a single transaction. This is especially useful for situations where multiple transactions occur between the same parties.
- Sidechains: These are separate blockchains that are connected to the main chain via a two-way peg. They operate independently and can have their own consensus mechanisms but are secured by the main chain.
- Plasma Chains: Plasma chains are similar to sidechains but with a more hierarchical structure. They report back to the main chain regularly and are optimized for mass transaction handling.
- Rollups: Rollups process and store transaction data on a sidechain but post transaction data to the main chain. They come in two varieties: optimistic rollups and zk-rollups, each with its own method of transaction verification.
- Security Considerations: While Layer 2 solutions are generally secure, they can have different security models compared to the main chain. This is an important consideration for users and developers.
- Impact on User Experience: For end-users, Layer 2 solutions can greatly improve the experience by reducing transaction fees and increasing transaction speeds.
- Adoption and Development: Many blockchain projects are actively developing Layer 2 solutions to enhance their networks. This is an ongoing area of innovation in the blockchain space.