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Backend Engineer, Loyalty & Virality (all genders)

Warszawa, Masovian Voivodeship, Poland💼 Full-time🗓 2026-07-16 → 2026-09-26

Core

Design and deploy scalable backend services and APIs to drive Loyalty Member ROI, enabling members to earn, track, and spend reward points within the HelloFresh ecosystem.

Role type

Senior Backend Engineer (Loyalty & Virality)

Builds

High-performance backend services and APIs for the Loyalty and Rewards domain

Domain

Direct-to-consumer food subscription (meal kits, ready-to-eat meals)

Deliverable

production ML models | product features

Required skills

Go, PHP, JVM languages (Java, Kotlin), microservices, distributed systems, event-driven architectures, RabbitMQ, Kafka, AWS SQS/SNS, PostgreSQL, MySQL, GraphQL, Docker, Kubernetes, CI/CD, unit testing, end-to-end testing

Preferred skills

AI coding agents (Claude Code, Cursor, Copilot), cloud technologies

Technologies

Go, PHP, Java, Kotlin, RabbitMQ, Kafka, AWS SQS/SNS, PostgreSQL, MySQL, GraphQL, Docker, Kubernetes

Responsibilities

Design and ship features across the Loyalty and Rewards domain; Design, develop, and deploy high-performance, scalable backend services and APIs; Maintain an aggressive development cadence turning hypotheses into live experiments; Contribute to the hypothesis backlog based on customer behavior data

Seniority

Senior, hands-on IC

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