Senior Backend Engineer — Scalable AI-Driven Platform

Numero; United States; Remote; USD 160.000 - 200.000; Vollzeit

Benefits dieser Stelle

Flexible PTO

401K with employer match

Medical, dental and vision coverage

Parental leave

Work-from-home setup stipend

Annual company retreat

Professional development support

Zusammenfassung

Numero is seeking a senior backend engineer to scale our Ruby on Rails monolith and deliver high-traffic backend services for campaigns and nonprofits. You will design scalable data paths, optimize SQL queries, and help shape our AI-assisted tooling as we handle billions of records and millions of requests.

You’ll collaborate on Plan Mode with Claude and Codex, own production systems, and mentor teammates. The role requires 6+ years of experience, deep reliability mindset, and excellent

Qualifikationen

• Deep experience building and scaling user-facing backend systems.
• Instinctively understand how code behaves at scale and optimize for performance.
• Fluency with SQL and relational data at scale, with indexing and batching techniques.
• Strong communication and collaboration in a small team environment.

Aufgaben

• Design and scale backend systems for high-traffic campaigns and nonprofits.
• Optimize queries and data paths to reduce latency and improve reliability.
• Collaborate with AI tooling initiatives and production-grade AI features.
• Mentor teammates and contribute to architecture and code reviews.

Kenntnisse

Backend systems

SQL at scale

System design

AI experience

Communication

Ruby on Rails

Tools

Ruby on Rails

PostgreSQL

OpenSearch

Jobbeschreibung

Numero is seeking a senior backend engineer to scale our Ruby on Rails monolith and deliver high-traffic backend services for campaigns and nonprofits. You will design scalable data paths, optimize SQL queries, and help shape our AI-assisted tooling as we handle billions of records and millions of requests.

You’ll collaborate on Plan Mode with Claude and Codex, own production systems, and mentor teammates. The role requires 6+ years of experience, deep reliability mindset, and excellent