Skelar

Senior Engineer (Payment & Ops) - Health&Wellness app

Warsaw, Remote. Posted 2 months ago

The role

The Senior Engineer will build an alternative payment processing system for Leaply. This includes integrating orchestrators, designing a subscription module, and moving the payment module from a monolith to a separate service.

What you will do

  • Integrate an orchestrator or billing provider
  • Set up company MID and payment methods by country
  • Design a subscription module for live traffic
  • Build parallel tests for old and new infrastructure
  • Perform phased traffic migration
  • Extract the payment module from the monolith into a separate service
  • Build a payment dashboard
  • Build a payment data pipeline in BigQuery and alerts
  • Form a backlog for the area together with the business part of the squad
  • Use AI in daily work

Required qualifications

  • Backend on Node.js / TypeScript production-level
  • 5+ years of commercial experience
  • Experience in the payment domain (subscription billing, rebills, retries, chargebacks, integration of at least one PSP like Stripe, Adyen, Braintree, Solid or analog)
  • Experience designing a service or module from scratch for live traffic (data models, idempotency, queues, webhooks, state reconciliation)
  • Experience with external API integrations (limits, error handling, retries, monitoring)
  • Ownership: finding risks and bringing solutions
  • Ability to speak business language
  • Use of AI in daily work

Nice to have

  • Experience with payment orchestrators (Primer, Spreedly or analog)
  • Experience moving a module from a monolith to a separate service
  • BigQuery and data pipelines
  • GCP, Kubernetes, Terraform, Argo CD
  • React / Next.js for internal interfaces

Benefits

  • Full ownership of the area
  • Ability to design architecture and technical stack
  • Growth on IC track with perspective to Tech Lead
  • Exclusive domain education and training programs
  • Access to a network of co-founders and specialists
  • Contribution to systemic aid for Ukraine via SKELAR foundation
  • Work spaces with gym, climbing wall, green zones in Bali and libraries
  • Breakfasts
  • Lunches
  • Access to sports training in Kyiv or partial compensation in Warsaw
  • Medical insurance
  • Paid business trips

About the company

SKELAR is a venture-builder that builds companies in sectors like EdTech, Mental health, Petcare, and FashionTech. Leaply is a part of this ecosystem building a digital product ecosystem for healthy living.