Senior Full Stack Product Engineer (Ruby) - Payment Team

Published on November 10, 2023

Since 2014, we’ve been on a simple mission. To do everything in our power to support nonprofit organizations in their efforts to make a difference.Helping you help others We are inspired by nonprofits their staff, volunteers, supporters, and all the folks in between—everyone who strives to do good. We’re motivated by the positive impact and change they bring to our world.We are Donorbox Our software helps nonprofits of all shapes and sizes—from charities to social impact groups to faith-based organizations—we help people everywhere fundraise more effectively.Our software helps nonprofits We strive to be The Tech Company for nonprofits and charities, and it starts with our people. We’re all here at Donorbox to drive change—to move ourselves and our clients toward better ways of fundraising. Our happy-to-work-from-home team (78 of us and counting!) is located in 14 different countries—so we understand the importance and impact of people from all around the world coming together for a greater cause! We’re a diverse group of tech lovers, fundraising advocates, and Zoom besties who treat each other how we want to be treated—aka we’re totally cool with people making coffee during meetings. Since 2014, our motto has been “whatever you do, do it well”—and there’s been nothing like helping others to bring out the best in everyone here at Donorbox.

About Donorbox

Donorbox is the leading fundraising platform and donor management system for nonprofit organizations. Our mission is to accelerate positive impact worldwide by helping nonprofits become highly effective at raising funds and managing their supporter base. Since 2014, we have helped more than 80,000 global organizations raise over $2B in donations from over 10 million donors. 
Our fast-growing company is profitable and bootstrapped (we also offer stock options) with a healthy run rate. We have a diverse, motivated team that is fully remote, with 100+ team members in 10 states and 15 countries.
Software engineering is a highly respected department in our company. We want to help engineers deploy high-quality, well-tested code that powers global philanthropy. 

The Role

This team is responsible for the Payment Processors integrations. From building it up to live monitoring. We keep an eye on implementation improvements not only from a performance perspective but also to improve maintainability and error recovery.
We are really serious about security. So, you will get involved in fraud detection
We're looking for a professional developer who is strong at Ruby / Javascript and cares about quality through simplicity. Our software engineers must make decisions on their own without being told detailed specs. Since we deal with payments, having a robust well-tested codebase is important to us.


  • Build, maintain, and monitor payment processor integrations
  • Build, maintain, and monitor fraud prevention strategies
  • Build, maintain, and monitor chargeback strategies
  • Enforce well-written tests and clean code, refactor and delete code for long-term maintainability
  • Review and test pull requests
  • Collaborate with product managers/designers/cross-functional teams to understand requirements and translate them into technical solutions


  • 7+ years as a Software Engineer
  • 4+ years of Ruby on Rails experience
  • 2+ years of financial products experience (either building or integrating with Adyen, EBANX, MercadoPago, PagSeguro, PayPal, PayU, Razorpay, Stone, Square, Stripe, ACH, WePay, AliPay, Apple Pay, Google Pay, and/or UnionPay)
  • Strong proficiency in OOP design and implementation
  • Design Patterns knowledge and appropriate usage by balancing the cost/benefit of the implementation
  • Strong proficiency in SQL
  • Strong proficiency in building and consuming REST APIs
  • Strong experience with vanilla JavaScript
  • Ability to work independently. Find, triage, and solve problems without direct orders. Validate and weigh the pros/cons of proposed solutions
  • Ability to patiently and relentlessly read throughout the documentation and scenarios/issues descriptions to get the proper understanding instead of jumping through keywords
  • Ability to understand and analyze individual cases instead of jumping to code and randomly testing until it works
  • Excellent communication skills, and the flexibility that is needed for working in a small globally distributed remote-first multi-cultural team
  • Intermediate English writing and speaking skills

Current Technical Stacks

  • Ruby on Rails
  • Postgres & Redis
  • Vanilla JS


  • Fully remote
  • Work in a timezone overlapping 12:00PM - 19:00 UTC
  • Salary: $70-$82k, depending on location and experience

Benefits & Perks

  • Fully remote work
  • Stock options (0.03%-0.05%)
  • Reimbursement credit for home office set-up and work laptop
  • Health insurance premium reimbursements, up to 75% for you and your family
  • PTO of 21 days (birthday included), 8 holidays of your choosing, and 2 paid volunteer days
  • Wellness program with fitness and mindfulness classes
  • Help thousands of social impact organizations improve the world
  • Work inside an apolitical, no-nonsense, mission-driven company
  • Culture of fewer meetings and async communication