Senior/Principal Site Reliability Engineer (NYC / MIA)

About Crossmint

In the 2000s, the world came online. Now, it’s coming onchain—and we’re making it happen, faster.

Crossmint is a one-stop-shop developer platform for companies building onchain. We completely remove the complexity of building and using blockchain applications. Our platform provides all of the infrastructure companies need to build apps that scale to millions, without needing to orchestrate multiple vendors. It lets them create experiences that mirror the traditional web with familiar features like FaceID and email sign-ups, while eliminating gas fees and other friction points.

Our suite includes wallets, payments, onboarding, on/off ramps, tokenization, AI agent infrastructure, and other essential onchain building blocks, across 40+ blockchains.

We’re building a world where companies can get their entire blockchain backend, through a few lines of code, to build the next generation of the internet. Join us!

Location

NYC or Miami

Type of Employment

Full-time

Salary range

Senior level: 170,000 - 185,000 USD

Principal level: 195,000 - 210,000 USD

Note: We determine candidate levels through insights gained during the interview process.

About the role

We’re looking for a Site Reliability Engineer with strong infrastructure engineering expertise and leadership potential. You’ll work alongside the existing team to stabilize and scale our onchain infrastructure as demand grows.

The ideal candidate thrives in high-ownership environments, can independently manage complex deployments (particularly Node.js services on AWS), and brings an operational mindset to problem-solving. While this is primarily an individual contributor role, you’ll be expected to help guide, mentor, and eventually manage others on the team.

Responsibilities

As a Site Reliability Engineer, you will be part of the team responsible for Crossmint products’ availability, performance, efficiency, monitoring, and emergency response. Your responsibilities will include:

• Stabilize Production Environments: Triage and resolve recurring infrastructure issues ensuring uptime, performance, and operational maturity.
• Deploy and Manage Services: Own deployment pipelines and cloud infrastructure for Node.js applications running on AWS.
• Build for Observability: Enhance monitoring, logging, and alerting systems to provide clear visibility into system health and performance, minimizing false positives and improving incident response.
• Improve Developer Velocity: Design internal tools, workflows, and CI/CD pipelines that make life easier for product and platform teams, balancing reliability with speed.
• Drive Proactive Reliability Work: Identify weak points before they become incidents. Champion initiatives like chaos testing, failover planning, and load testing to build real resilience.

About You

To thrive in this role, you should possess the following qualifications:

• Proven experience using the following:
  • Platforms like Azure, AWS, and GCP.
  • MongoDB, MySQL, and Redis.
  • CI/CD tools.
• Experience working within a team and references to back it.
• Programming Expertise: Showcase advanced knowledge in Javascript or TypeScript.
• Excellent communication skills and a proactive, self-starting attitude.

Bonus Points

We highly value candidates with:

• Previous experience mentoring or managing engineers
• Familiarity with security infrastructure and tooling
• Experience scaling infrastructure for high-throughput blockchain or web3 applications

Please keep in mind: This is the full list of everything we’re looking for. You don’t need to check every single box to be a strong candidate, and having a good number of these would already indicate a solid fit for the role.

Why Join Us?

• You’ll be a foundational pillar of our reliability and infrastructure strategy.
• You’ll be able to grow into a leadership role while still writing code and solving problems.
• You’ll join a fast-moving team at the edge of blockchain infrastructure.

Benefits

• Highly competitive location-based compensation.
• Unlimited, flexible PTO.
• Company laptop and allowance for any necessary home equipment.
• Daily stipend for commuting to the office.
• Free meals in the office.
• Company-paid trips for annual off-sites and team bonding.
• Flexible work sched