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Harmony | Remote | $32k - $53k | |||
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This job is closed
Job Description
You will build and scale fintech applications that solve remittance, cross-border payments and payroll problems. You will work on fiat and crypto integrations in applications to solve key challenges in cross border finance: visibility, certainty, cost and consistency.Â
You’ll work with partners to launch integrations and be responsible for all code and product feature details. See #crossfi on harmony.one/grants for more of our initiatives.
Qualifications
Extensive experience in cross border payments and fiat/crypto integrations and deep understanding of blockchain systems:
- Strong background in Solidity, JavaScript, Java, Python, C#
- Full stack (Smart Contract, and DeFi App), and experience working with exchange, wallet and other APIs are a big plus. Experience with front-end development frameworks like react.js, vue.js, angular.js, jQuery; iOS and android application development is also a big plus
- 3-5 years experience in cross border payments, remittances and foreign exchange
About Harmony
Scaling Ethereum Applications and Cross-Chain Finance
How to scale Ethereum applications in 2021? Harmony is a sharding protocol with a trustless Ethereum bridge.
Our developers use Ethereum tooling such as Solidity and Ether.js. Users use Metamask to store and they use our bridge to swap Harmony and Ethereum assets. We achieve 2-second finality for fast transactions and support 1000 delegating stakers for secure shards.Â
A cross-chain Uniswap port is already live on our mainnet. Similar to Layer-2 protocols, Harmony is now fully interoperable with the Ethereum ecosystem.
What We Offer
At Harmony, you will work with experienced engineers in a high performance culture. We offer competitive compensation, remote work, 100% match on 401K annual limit, 100% family coverage for medical, dental and vision.
Join us if you are excited by the challenge of building cross border finance applications for open financial systems.
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.