Senior Blockchain Architect & Security Lead

P2P; United States; On-site; USD 180,000 - 260,000; Full time

Benefits offered by this job

Competitive compensation

Token rights / equity options

Full benefits (medical, vision, dental

Flexible vacation (PTO)

Remote-first team across manycountries

Job summary

Ondo is seeking a Senior Blockchain Engineer to design secure, scalable smart contract systems and the tooling that supports them across deployment, monitoring, and life cycle management. You will ensure security from deployment through daily operation, build tooling for non-technical teammates to safely view on-chain state, and drive cross-team integration with product, web, and operations.

Join a remote-first team shaping real-world asset tokenization and DeFi protocols with strong engineering

Qualifications

• Based in PT, MT, CT, or ET time zones.
• Excellent technical and non-technical communication skills, verbal and written.
• Bachelor's degree in Computer Science, Engineering, or a related technical field.
• 5+ years of software engineering experience.
• 3+ years in blockchain engineering, ideally from another DeFi protocol live on multiple chains.
• Strong competency with Solidity; exposure to non-EVM smart contract languages a plus — particularly Solana.
• Demonstrated ability to design systems beyond contracts — tooling, automation, security, and integration across teams.
• Proven results building and scaling a DeFi protocol.
• Python and/or TypeScript experience preferred for tooling and automation.
• Strong technical grasp and judgment on task prioritization.
• Understanding the 'why' behind requirements and defining the 'minimum scope'.

Responsibilities

• Architect entire smart contract systems for deployments, interoperability, and security.
• Own contract security across the full lifecycle, including upgrades and controls.
• Build tooling and automation for non-technical teammates to view and manage on-chain state.
• Connect smart contract design to the rest of the product and operations.
• Serve as tech lead and SME for blockchain projects with scalable solutions.

Skills

Solidity

DeFi

System design

Multi-chain

Python

TypeScript

Tech leadership

Security lifecycle

Automation

Communication

Education

Bachelor's degree in CS/Engineering

Job description

Ondo is seeking a Senior Blockchain Engineer to design secure, scalable smart contract systems and the tooling that supports them across deployment, monitoring, and life cycle management. You will ensure security from deployment through daily operation, build tooling for non-technical teammates to safely view on-chain state, and drive cross-team integration with product, web, and operations.

Join a remote-first team shaping real-world asset tokenization and DeFi protocols with strong engineering