Senior Product Engineer (Scalability)

TL;DR

Senior Product Engineer (Node.js/Postgres): Designing and scaling high-throughput backend systems for billing, usage metering, and fraud protection with an accent on correctness, consistency, and auditability. Focus on re-architecting billing pipelines, optimizing Postgres under heavy load, and orchestrating complex workflows with Temporal.

Location: Remote (Global)

Company

hirify.global is a platform designed to make software engineers higher leverage by providing powerful infrastructure tools.

What you will do

• Architect and scale real-time billing pipelines, from ClickHouse ingestion to the rating engine.
• Build idempotent payment flows and reconciliation systems using Stripe and other providers.
• Develop real-time fraud and abuse detection systems to protect platform margins.
• Optimize Postgres and Node.js services to handle heavy write loads and high-pressure environments.
• Implement durable, long-running workflows using Temporal.
• Create TypeScript and GraphQL APIs with a focus on auditability and correctness.

Requirements

• Proven track record of scaling systems (e.g., handling 10x growth).
• Deep expertise in Postgres and relational data modeling at scale.
• Strong knowledge of Node.js internals (event loop, memory behavior).
• Experience with workflow engines like Temporal for asynchronous backend jobs.
• Familiarity with payment provider failure modes, idempotency, and reconciliation.
• Ability to lead the entire development process from ERD to monitoring.

Nice to have

• Experience with Rust or a desire to learn it.
• Direct experience in billing, payments, or fraud systems.

Culture & Benefits

• High autonomy and ownership culture with very few meetings.
• Globally distributed team with an asynchronous communication style.
• Competitive salary, full health benefits (including dependents), and strong equity grants.
• Equipment stipend and a focus on long-term professional growth.

Hiring process

• Introductory call to discuss the role and candidate goals.
• Asynchronous design project focused on a scaling system (Billing or Stream-processing).
• Technical review of the solution with the engineering team.
• Team interview with 4 people from different company sections.
• Final conversation with the CEO.