Senior Backend Engineer - Build Finance AI (Equity)

Grupo Moss

Warszawa

On-site

PLN 260,000 - 340,000

Full time

14 days+

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Benefits offered by this job

Equity

Office culture

Work from abroad

Learning budget

Local benefits

Job summary

Moss is hiring Senior Backend Engineers (f/m/d) in Warsaw to build the Finance AI platform for Europe’s mid-sized businesses. You will lead backend development, collaborate with PMs and designers, define APIs with frontend teams, and ensure high-quality, tested code that supports scalable features.

Fluency in English is required. The role involves working with cross-functional teams, delivering reliable software, and contributing to rollout strategies and performance improvements in a fast-paced

Qualifications

Proven experience as a Backend Engineer, leading projects end-to-end to launch.
Proficiency in Java development technologies (incl. Spring framework), with microservices, message queues, alerting and feature flags.
Understanding of development design patterns incl. Rest API design principles.
Hands-on experience with testing approaches and libraries (unit and integration tests).
You are fluent in English.

Responsibilities

Backend Development: Lead the development of the application, ensuring it aligns with product requirements and standards.
Collaborative Planning: Partner with PMs and designers to understand the vision, user needs and goals.
Frontend Collaboration: Work with frontend engineers to determine required APIs and frontend functionality.
Testing and Quality Assurance: Produce well tested and reliable code; write unit and end-to-end tests.
Rollout and Performance Monitoring: Devise efficient rollout strategies and monitor performance and user feedback.