Senior Backend Engineer, Nitro

cyber; United States; Remote; USD 140,000 - 210,000; Full time

Benefits offered by this job

Remote-first global workforce

Professional reimbursement program

Medical, dental & vision coverage

401k retirement plan

Wellness stipend

Home office setup / ergonomic program

Job summary

Offchain is building the core infrastructure powering Arbitrum, the leading Ethereum scaling solution. You will tackle distributed systems challenges and optimize performance while contributing to security and scalability, working closely with research, product, and blockchain engineering teams.

Ideal candidates have production experience with concurrency-capable languages, a strong ownership mindset, and a collaborative, feedback-friendly approach to work in a fast-paced, remote-first

Qualifications

• Extensive production experience with a language that supports concurrency (Go, C++, or Rust).
• Strong ownership mindset and drive to solve complex problems through experimentation.
• Always updating with the latest technologies and able to collaborate across teams.
• Open, transparent communication and willingness to give/receive feedback.
• Proactive and helpful beyond day-to-day tasks.

Responsibilities

• Work on core infrastructure powering Arbitrum and Ethereum scaling.
• Optimize performance and contribute to security and scalability.
• Collaborate with research, product, and blockchain engineering teams.

Skills

Concurrency programming

Ownership mindset

Collaborative problem solving

Strong communication

Tools

WebAssembly

SDK development

Compilers

Job description

At Offchain, we aren’t just building products: we’re leading a movement.

As pioneers in blockchain scalability and security, we're at the forefront of transforming how the world interacts with decentralized applications. We're laying the foundation that will define the next generation of digital commerce, governance, and human interaction. This involves tackling real-world challenges that come with scaling blockchain technology, without compromising on its core principles: decentralization, security and transparency.

At the center of this vision is our people. Our team is made up of thinkers and doers that embrace new challenges and seek solutions that push existing boundaries. If you’re energized by solving unprecedented problems, and believe in the role that decentralized systems will play in creating a more equitable digital future, then we want to hear from you.

Why Offchain?

Offchain is setting the pace for the entire Ethereum ecosystem. We built the Arbitrum stack that powers Arbitrum One, the most widely adopted Ethereum scaling solution that exists today.

Arbitrum’s ecosystem is undergoing tremendous growth with hundreds of projects and dApps on Arbitrum One today. Over 100 different teams have used Offchain technology to build their own Arbitrum chains. Major players in the space, Robinhood, BlackRock, Ethena Labs, Securitize, Aave, and Apechain are all using the Arbitrum stack.

Arbitrum’s thriving ecosystem wouldn’t exist without our advanced technology stack. Arbitrum, Prysm, ZeroDev. These aren’t just product names. These are tools that are actively reshaping what's possible on Ethereum and advancing its core infrastructure.

To top it all off? We’re backed by $124 million in funding. We’ve demonstrated consistent execution with billions in secured value, thousands of supported projects, and infrastructure processing millions of transactions seamlessly.

The Role:

As part of the Nitro Backend team at Offchain, you will work on the core infrastructure powering Arbitrum, the leading Ethereum scaling solution. In this role, you’ll tackle complex distributed systems challenges, optimize performance, and contribute to the security and scalability of Arbitrum. You’ll collaborate closely with our research, product, and blockchain engineering teams, working at the cutting edge of blockchain technology alongside world-class engineers, including many industry leaders.

Who you are:

• Possess extensive production experience with a programming language that supports concurrency (e.g. Go, C++, or Rust)
• Possess a strong sense of ownership in your work which drives you to find new and innovative ways to solve complex problems through rigorous experimentation
• Always up to speed on the latest technologies
• Possess an open, transparent and direct communication style and have experience working in tight collaboration with your teammates
• Always open to feedback, new ideas and opportunities for self-improvement
• You look for ways to help out beyond your immediate day-to-day work

What you've done:

• Made significant contributions to the products you’ve worked on in your career
• Maintained a security focused mindset, always keeping an eye out for potential threats and vulnerabilities in your code

Nice to have:

• Familiarity with WebAssembly, particularly writing high performant and high security code in production environments
• Experience working with compilers, architecting systems and developing SDKs

Perks:

• Remote-first global workforce + NY office
• Professional reimbursement program (facilitates industry conference attendance, certifications, and more)
• Medical, dental & vision coverage (US + some other countries)
• 401k retirement plan + company match (US only)
• Wellness stipend
• Home office set up / ergonomic equipment program

Attention Offchain Job Seekers:

This role cannot be performed in California, or Colorado.

Please be advised that there has been a rise in fraudulent recruiter activities, particularly within the Web3 space. If you would like to confirm whether someone is an Offchain employee or the legitimacy of an offer you received, please email [e-mail]

At Offchain, we are committed to building a welcoming and supportive workplace for all employees, regardless of their background or identity. We strive to create an environment where everyone feels valued and has an equal opportunity to succeed and thrive. We encourage candidates from all walks of life to apply and join our team.