Senior Full Stack Engineer, Subscriptions Team

About the Team

The Subscriptions Platform team is responsible for building the platform that powers Fireblocks’ subscription data, billing, and product-led growth initiatives — enabling both internal teams and customer-facing experiences to drive business impact.

We own and build services that power:

• Licensing and subscriptions

• Billing and payments

• Usage metering and analytics

• Integrations with CRM, payment providers, DWH, and other internal systems

• Signup and onboarding flows for new customers and workspaces

• Feature management and experimentation capabilities to support product-led growth (PLG)

• Enablement and configuration of purchased products for different business verticals

As a Senior Full Stack Engineer on this team, you’ll work across the stack — designing robust backend services and building polished, data-driven UIs that help customers and internal stakeholders get value quickly.

What You’ll Do

• Lead technical design and implementation of backend projects, owning end-to-end features from architecture to deployment

• Design, implement, and maintain scalable microservices and event-driven systems that power our subscription and billing engine

• Design and maintain asynchronous flows using queues to handle high-concurrency usage metering and analytics

• Contribute to the frontend domain by building and maintaining UIs that expose subscription data to customers

• Collaborate with Product, Data, and Customer Success teams to support product-led growth (PLG) and business goals

• Take ownership of production systems, including monitoring, troubleshooting, and reliability improvements

• Write clean, testable, and maintainable code, and participate in thoughtful code reviews

• Simplify integrations and workflows to reduce Mean Time to Value (MTTV) for internal stakeholders and customers

What You’ll Bring

Qualifications

• 5+ years of experience as a Full Stack Engineer working on production systems

• Strong backend engineering experience with:

  • Node.js and TypeScript

  • Microservices architecture

  • RESTful APIs and event-driven systems

• Working knowledge of React and TypeScript, with the ability to contribute to frontend components and data-driven UIs, including:

  • Building complex, data-heavy, performant web applications

  • Translating UX and product requirements into clean component architectures

• Experience with relational databases, including data modeling, query optimization, and troubleshooting

• Proven experience deploying and operating services in cloud environments (AWS, GCP, or Azure)

• Experience with containerized workloads (Docker, Kubernetes, or similar)

• Hands-on experience with monitoring, logging, and alerting tools (e.g., Datadog, Coralogix, Grafana)

• Strong understanding of system design, distributed systems, scalability, and reliability

• Ability to debug complex production issues across the stack and drive them to resolution

• Comfortable working in a fast-paced environment with multiple priorities

• Experience with asynchronous processing and queues

Nice to Have

• Experience with NestJS

• Experience with billing, payments, or subscription platforms

• Experience building internal platforms or tooling for engineering teams

• Background in analytics, BI, or customer-facing data products

How We Work – Team Values

You’ll thrive in this role if you embody our team values:

• Accountability – you own what you build, end to end

• Proactive approach – you anticipate problems and solve them early

• No ego – you give and receive feedback openly and focus on the best solution

• Team-first mindset – we succeed and fail together