Job Specifications
Rhinestone has raised $5m at Seed Round, led by: 1kx, with further support from CoinFund, Lattice, Heartcore, Circle Ventures, and more, to revolutionize User Experience in Web3 / Blockchain with Smart Accounts to enable mass adoption. Smart Accounts are the bedrock for solving crypto’s UX challenges, from easy ones like gas abstraction and key recovery to more complex ones like Ethereum’s fragmented liquidity.
Join as employee #8 to build Smart Account infrastructure and tooling, enabling developers to build powerful onchain products with web2-like UX. Our intent-powered infrastructure allows seamless onchain actions regardless of the chain the user is transacting on. Our open Smart Account module library gives developers maximum flexibility to build the wallet stack they need for their users.We are building at the bleeding edge of the crypto wallet tech stack.
We built the first ERC-4337-compliant Modular Smart Account, the precursor to ERC-7579. This is the dominant technical standard for Smart Accounts, which we lead and use as a foundational layer to permissionless wallet innovation and interoperability for blockchains, cryptocurrencies, infrastructure, etc.
Roles and Responsibilities:
We’re looking for a Senior Engineer to play a foundational role in developing our offchain tech stack or infrastructure. At a high level, you will:
Work closely with the team to ship new products and develop solutions for challenging technical problems.
Deliver high-quality code from concept until production.
Dive into the code of other team members to provide thorough reviews and contributions outside of your responsibilities.
You'll be working on what suits your strengths to ultimately build various components that interact with EVM-based smart contracts, such as:
Developer SDKs that are used in frontend and backend applications.
Offchain services that interact with smart accounts.
Frontend applications that are used directly by end users.
Developer-facing applications, such as developer hubs and dashboards.
Concurrent backend systems and smart contract systems
Orchestration layer.
Relevant Experience:
Our engineers have strong blockchain foundations to be able to work freely in a small and scrappy team. This might look like:
3+ years of relevant experience with blockchain technology (EVM-focused).
3+ years of experience writing Typescript/Javascript for production environments
Experience working with crypto wallets (preferably smart accounts), bridging technologies, blockchain nodes, relayer or intent-based systems, and an understanding of Layer 2 solutions and their integration into the application layer.
Ability to balance shipping quickly with building a stable infrastructure.
You are also:
A self-starter, problem-solving from the root cause, able to break down complex problems into simpler components and chart the phases of getting to a stable and scalable solution.
A hustler mentality: founding a company, working in startups (pre-series A), or building side projects (open source is a plus).
Able to be a thought leader and highly collaborative to drive toward 10x outcomes.
This role requires versatility, working across a traditional software stack and integrating with smart contracts on EVM chains. If you love solving complex problems at the intersection of scalability, UX, and trustlessness, we’d love to speak with you! This is an opportunity for you to leave a mark on the broader ecosystem and become a true domain expert.
Our Tech Stack:
Onchain: Solidity (Foundry)
Offchain backend: Rust, Node, Typescript, and various other JS/TS-based frameworks
Offchain frontend: NextJS, Typescript, and Tailwind
Location:
London, UK
What We Offer:
Meaningful equity as Employee #8, with entry at our $5m Seed Round
Opportunity to build and own complex parts of tech stack end-to-end
Large influence over Rhinestone's product development, growth, launches, etc.
Flexible working hours and holidays
Regular team meetups, offsites, and conferences
A chance to work with the leading minds in account abstraction and the broader web3 space
Rhinestone employs a meritocratic mindset when hiring. Regardless of background, gender identity, age, religion, etc., we assess candidates by their ability to contribute, collaborate, and deliver excellent work.
About the Company
Rhinestone is an infrastructure and tooling provider for developers building on Smart Accounts. We make it simple for developers to build self-custodial Web3 applications with seamless UX and powerful Web2-like features. We provide one SDK and API for all your onchain account and crosschain needs—deploy and customize smart accounts for your users, deliver frictionless onboarding, abstract away gas fees, transact on any chain instantly, and more.
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