Senior Software Engineer, Backend

Numero•,

7h•$160,000 - $200,000•Remote

About The Position

At Numero, we build software for political campaigns and nonprofits. Since our founding in 2019, we’ve scaled our platform to serve thousands of campaigns ranging from city council seats to US Senate races, and have helped them collectively raise over $10B in contributions. Our platform is an all-in-one system comprised of a donor CRM, broadcast email + texting tools, and payment processing pages that our clients rely on for their work every day. As our product is the platform that our users operate out of every day, this also means that when we build and launch new products, we do so to all of our users, at scale. We’ve experienced tremendous growth over the past several years and are hiring experienced engineers to help us scale our backend infrastructure and to support the development of several new products on our roadmap. In joining our team of 6, you will help shape our team’s culture and have a substantial impact on the success of our company – come join us!

Requirements

Deep experience building and scaling user-facing backend systems (ideally 6+ years, with a meaningful portion spent responsible for production systems with significant traffic).
Deep, instinctive understanding of how code behaves at scale.
Real fluency with SQL and relational data at scale.
Hands-on experience building with AI.
Excellent written and verbal communication and high EQ.
Located in the continental USA (ET, CT, MT, PT).
Willing to travel 1-2x a year for company retreats and/or team offsites.

Nice To Haves

Prior experience with our specific stack (Ruby on Rails, TypeScript, React, Postgres, MongoDB, OpenSearch, Redis).

Responsibilities

Help scale our backend infrastructure.
Support the development of several new products on our roadmap.
Shape the team’s culture and have a substantial impact on the success of the company.
Build and scale user-facing backend systems.
Reason about code paths hit by millions of requests and cost.
Write efficient, scalable SQL queries using optimizations like indexing and batching.
Analyze performance metrics and monitoring after shipping to ensure things are working.
Architect patterns that scale well.
Build with AI and deepen craft as agentic coding matures.
Collaborate effectively with team members.

Benefits

Base salary in the range of $160,000 - $200,000, plus equity.
Merit-based annual bonus that scales with company performance.
Flexible PTO (including 12 company holidays and 2 weeks of required PTO each year).
401K Plan with employer match.
Medical, dental and vision coverage with HSA option; 50% coverage for dependents.
Paid Parental Leave for primary and secondary caregivers.
Your choice of premium tech setup – laptop, monitor, accessories, and headphones.
$1,000 for your work-from-home setup.
Annual company retreat and/or team offsites.
Professional development support – we want you to grow with us and will invest in courses, certifications, or training that helps you develop your career.