Senior Backend Engineer
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Job Description
Senior Backend Engineer scaling Fundraise Up’s global nonprofit fundraising platform. Building Node.js and TypeScript services, distributed infrastructure, and donation-processing systems.
Responsibilities:
- Design, build, and maintain clean, efficient, and scalable backend services in Node.js and TypeScript
- Develop new product features from concept to deployment with product managers and frontend engineers
- Own key parts of backend architecture and make decisions improving performance, reliability, and security
- Write comprehensive unit tests and conduct code reviews
- Identify and implement system improvements and refactor legacy code
- Mentor others and share engineering expertise
- Actively use AI in day-to-day work and identify how AI can improve engineering processes
- Resolve complex challenges in a high-load, distributed system
- Build and scale infrastructure processing millions in donations
- Work across checkout, donor portals, and analytics pipelines
Requirements:
- 7+ years of backend development experience, preferably in a product-driven environment
- Strong hands-on experience with Node.js and modern frameworks such as Koa or NestJS
- Deep expertise in TypeScript, including advanced typing and module systems
- Solid experience with MongoDB or other NoSQL databases
- Familiarity with event-driven architecture using Kafka, RabbitMQ, or Bull/Redis
- Hands-on experience with ClickHouse or similar analytics databases and Elasticsearch
- Strong understanding of system design, clean architecture principles, and performance optimization
- Ability to work independently, take ownership, and complete projects
- Comfortable working within a Russian-speaking team
- Meaningful day-to-day use of AI and understanding of its value
- Nice to have: remote-first/global distributed team experience
- Nice to have: performance monitoring and observability tools such as Prometheus, Grafana, or Datadog
- Nice to have: interest in nonprofit technology
Benefits:
- 31 days off
- 100% paid telemedicine plan
- Home Office Setup Assistance, including assistance purchasing an office chair, office desk, monitor, and other workspace items
- English learning courses
- Relevant professional education
- Gym or swimming pool
- Co-working
- Remote working
- Equity options
- Collaborative product team
- Clear product vision and access to real customer feedback
- Flat structure
- Transparent company culture
- Long-term focus
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