Fullstack Backend Engineer (Node)

TL;DR

Fullstack Backend Engineer (Node): Develop and operate backend services and APIs for a subscription platform and habit-building products with an accent on scalable architecture, cloud deployment, and integration with marketing and payment platforms. Focus on designing reliable backend systems, supporting A/B testing, and contributing to frontend when needed.

Location: Remote with offices in Kyiv and Warsaw, Ukraine and Poland

Company

Leaply is a fast-growing startup backed by hirify.global, building digital and physical products to help people build healthy habits globally.

What you will do

• Collaborate with product, marketing, and design teams to deliver impactful features.
• Design, build, and maintain backend services and APIs using Node.js and NestJS.
• Work with GraphQL/REST, databases, caching, and queues for scalable functionality.
• Deploy and monitor services in cloud environments (GCP, Docker, Kubernetes).
• Instrument analytics and support A/B testing and third-party integrations.
• Contribute to frontend development with React/Next.js when necessary.

Requirements

• Must have 3+ years of commercial experience building web backends.
• Strong Node.js skills, preferably with NestJS framework.
• Experience with GraphQL or REST APIs, SQL/NoSQL databases.
• Familiarity with Docker, CI/CD, GCP, Kubernetes is a plus.
• Business-driven mindset with ownership of code post-release.
• Use of AI tools in workflow is expected.

Nice to have

• Startup experience or building services from scratch.
• Exposure to marketing technologies and payment systems.
• Frontend skills with React/Next.js.
• Experience with observability tools and performance tuning.
• Familiarity with Kubernetes.

Culture & Benefits

• Competitive compensation and perks including lunches, gym, and health insurance.
• Full ownership and influence on product and technical strategy.
• Supportive team with multiple successful exits.
• Access to internal communities in tech, product, marketing, and payments.
• Meaningful mission to improve quality of life.