Software Engineer (Rollup)

Confidential; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

Deciml is seeking a Senior Blockchain Engineer and Researcher to advance our Ethereum Layer 2 rollup. You will design and develop smart contracts and execution machines, and re-architect existing rollups to enable decentralised sequencing and reward mechanisms for validators.

You will work across the stack on transaction batching, security testing with Foundry, and deployment best practices, collaborating with a small, focused team to deliver a scalable, trust-minimising infrastructure for

Qualifications

• 4+ years of professional blockchain development experience.
• Experience architecting blockchains and rollups.
• Hands-on experience with Layer 2 solutions such as Arbitrum, Optimism, Taiko or other rollup architectures, with a solid understanding of decentralised sequencing and the Ethereum L2 ecosystem.
• Experience developing secure smart contracts, with a focus on unit and fuzz testing using Foundry.
• Extensive experience with deployment and security best practices.

Responsibilities

• Design and develop smart contracts for the rollup.
• Architect and optimise transaction batching and sequencing.
• Re-architect existing rollup solutions for decentralised sequencing and validator reward mechanisms.
• Collaborate with the team to build a scalable Ethereum L2 infrastructure.

Skills

Blockchain development

Layer 2 architectures

Smart contracts security

Fuzz testing

Tools

Foundry

Job description

About the company

Our client is building decentralised infrastructure for the Ethereum ecosystem. Their flagship liquid restaking protocol is designed to lower barriers for at-home stakers and counter centralisation risks from existing staking pools. They are also building an Ethereum based rollup that enables credibly neutral transaction sequencing and ensures value flows back to Ethereum’s L1 validators.

They are backed by leading crypto VCs, major exchanges and global financial institutions, and are expanding the team with people ready to shape the future of Ethereum’s infrastructure.

The role

We’re looking for an ambitious Senior Blockchain Engineer and Researcher to play a key role in advancing the company’s Ethereum Layer 2 rollup. Your primary focus will be designing and developing smart contracts and execution machines.

You’ll build smart contract solutions that aggregate and optimise transaction batches, and re-architect existing rollup solutions to become based. These contracts will power decentralised sequencing and validator reward mechanisms, contributing to a sustainable rollup ecosystem.

Requirements

• 4+ years of professional blockchain development experience
• Extensive experience architecting blockchains and rollups
• Hands-on experience with Layer 2 solutions such as Arbitrum, Optimism, Taiko or other rollup architectures, with a solid understanding of decentralised sequencing and the Ethereum L2 ecosystem
• Experience developing secure smart contracts, with a focus on unit and fuzz testing using Foundry
• Extensive experience with deployment and security best practices

Personal attributes

• Research-oriented mindset with the grit to deliver an exceptional product
• Open to feedback without ego and hungry to explore new ideas
• Independent problem solver with a strong sense of ownership, plus solid communication and team skills

Nice to have

• TypeScript and backend development
• Experience working in a scrum or agile setup