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Senior Backend Engineer (f/m/d)

Backend Developer • Senior • Hybrid • Full-time Poland Warsaw, Poland

Senior Backend Engineer role across Moss's Warsaw engineering teams (Sales Enablement, Pricing & Billing, Acquisition, Spend Management, Activation & Card Spend), building spend management automation products.

Responsibilities

  • Lead backend development of the application, aligned with product requirements
  • Provide regular updates on progress to product managers and designers
  • Partner with PMs and designers during project kick-offs to understand vision and user needs
  • Collaborate closely with frontend engineers to determine required APIs and functionality
  • Produce well-tested, reliable code, including unit and end-to-end tests
  • Devise rollout strategies for new features and monitor performance and feedback

Requirements

  • Proven experience as a Backend Engineer, leading projects end-to-end to launch
  • Proficiency in Java development technologies (Spring framework), microservices, message queues, alerting, reliability, and feature flags
  • Understanding of development design patterns, including REST API design principles
  • Hands-on experience with testing approaches and libraries (unit, integration testing)
  • Fluent in English

Soft skills

Pragmatic, quality-focused mindsetDelivery focus and prioritizationCollaborative communicationInquisitive mindsetTeam player

What we offer

  • Top-of-market compensation package, including equity
  • Vibrant offices with weekly breakfasts and Friday demos
  • 20 days 'work from abroad'
  • 600 EUR/GBP Learning & Development budget

About the company

Moss is a Berlin-founded SaaS scale-up with 300+ employees from 50+ nationalities across 5 European offices. Their goal is to power every European SMB's spend digitally and with AI; over 5,000 businesses in Germany, the Netherlands, and the UK use their products, and they've raised €180 million in funding.

Languages: Angol: Felsőfok

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