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About the Role

99Pledges is a fundraising technology platform powering online donation campaigns. We are seeking a Senior Software Engineer to contribute to our mature Rails codebase, focusing on payment integrity and end-to-end feature ownership, from database schema to UI.

Responsibilities

Own features end-to-end, from database schema to background jobs to the user-facing UI.
Develop and maintain core fundraising platform features including campaigns, participants, donations, and reporting.
Integrate and manage payment processing with multiple providers (credit card, PayPal, ACH/EFT), including payouts, requests, and reconciliation.
Enhance the multi-tenant white-label system with branding, feature flags, and configuration.
Implement and improve fraud prevention and trust systems, including detection, device fingerprinting, and abuse mitigation.
Manage background processing for tasks such as email delivery, data exports, and metric calculations.

Requirements

3+ years building and maintaining production web applications with strong Ruby on Rails experience.
Solid grasp of relational database design, query performance, and safe migrations against large production tables.
Experience integrating third-party APIs, ideally payment processors, and understanding their failure modes (retries, idempotency, webhooks, reconciliation).
A test-first mindset, writing well-tested code and prioritizing correctness and edge cases.
Comfort working across the full stack, including server-rendered views and front-end interactivity.
Strong communication skills and ability to explain technical tradeoffs clearly.
Experience with payment/fintech systems, PCI considerations, or handling money in software is a plus.
Familiarity with multi-tenant / white-label architectures is a plus.
Experience with background job systems and asynchronous processing at scale is a plus.
Exposure to fraud detection or trust & safety systems is a plus.
Experience with feature flagging and A/B experimentation (e.g., PostHog) is a plus.

Skills

Ruby on Rails
PostgreSQL
HAML
SCSS
Bootstrap
jQuery
Delayed Job
Braintree
PayPal
Dwolla
Heroku
AWS S3
Redis
Postmark
Honeybadger
New Relic
Datadog
PostHog

Location

Remote

Work Type

Full-time

Experience Level

Senior

About the Company

99Pledges is a fundraising technology platform that powers online donation campaigns for organizations, teams, and individuals through our flagship product and through white-label deployments for partners.
We process real money at scale, so correctness, reliability, and security are core to everything we build.
Our Values: Humility, Honesty, Hunger, Horizon.
We seek to build a generational software company.
We review designs before writing code and favor explicit, well-engineered solutions over clever ones.
We prefer DRY code, thorough testing, and small, reviewable changes.
We take production seriously: careful migrations, monitoring, and a bias toward correctness — because we handle donations that matter to real people and organizations.

Equal Opportunity

To ensure transparency, we want candidates to know that Beacon Software uses Artificial Intelligence and AI-enabled tools to assist with screening, reviewing, organizing and highlighting profiles and applications that match the key requirements for each role.
AI does not make hiring decisions: Every application is reviewed by a member of our team, and all decisions throughout the process are made by humans. We use AI to support efficiency and consistency, not to replace human judgment.
We are committed to a fair, thoughtful, and equitable experience for every candidate.