Fullstack Developer

Fundraise Up is a global fundraising platform that powers tens of millions of dollars in donations monthly for nonprofits worldwide. The platform serves enterprise nonprofit organizations across North America, the UK, Australia, and Europe, offering a large and complex product ecosystem including checkout experiences, customizable widgets, donor and partner portals, admin tools, and internal apps. The engineering team consists of 80+ engineers distributed mainly across Spain, Poland, Portugal, Georgia, Armenia, Serbia, Turkey, and Cyprus.

• 7+ years of professional fullstack development experience.
• Deep understanding of modern JavaScript (event loop, closures, promises, prototypes).
• Expert-level proficiency with React and its ecosystem (familiarity with Vue is a plus).
• Strong backend expertise with Node.js (experience with Koa or NestJS is highly preferred).
• Experience with Webpack configuration, performance optimization, and profiling.
• A keen eye for detail and a high sense of ownership and accountability.

Nice to have:

• Experience with MongoDB, ClickHouse, or Elasticsearch.
• Familiarity with Docker, CI/CD pipelines, or cloud infrastructure.
• Contributions to open-source projects or a strong personal portfolio.

• Design, build, and maintain resilient frontend and backend features using React and Node.js.
• Develop core products including donation checkouts, embeddable widgets, and donor/partner portals.
• Architect and develop system components that scale across millions of monthly transactions.
• Write clean, well-documented, and thoroughly testable code.
• Drive architecture and technical design discussions to find elegant solutions to complex problems.
• Mentor peers by conducting thoughtful code reviews and providing constructive feedback.
• Partner with product managers and designers to clarify requirements and shape the roadmap.
• Proactively identify and resolve bugs, performance bottlenecks, and optimization opportunities.
• Actively use AI tools in day-to-day work and identify opportunities for AI to add value.

All official correspondence from Fundraise Up will exclusively originate from the @fundraiseup.com domain. Exercise caution and ensure the authenticity of emails claiming to be from the company. Fundraise Up is an equal opportunity employer committed to diversity and inclusion, not discriminating based on protected characteristics.