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Backend Engineer

SQUARE ONE RESOURCES sp. z o.o.Warszawa, Masovian, Poland

29 days ago

Job description

technologies-expected :

Node.js
TypeScript
Terraform
Algolia
PostgreSQL
MySQL
Docker

about-project :

We’re looking for a Mid-Senior Backend Engineer to join our Team, further developing a core domain responsible for delivering and managing all our app content. Your first project will be a focused migration effort—migrating schema, transforming data, re-implementing core rendering logic, and laying the foundation for future-proof, AI ready API-driven content delivery.

responsibilities :

Execute the technical migration of our CMS from Firestore to a headless CMS, including schema design, data transformation, and import tooling.

Re-implement core functionality currently handled in our content-renderer microservice (e.g., asset enrichment, topic structuring, story rendering).

Design and implement CMS lifecycle hooks or webhooks to support downstream systems and custom functionality, e.g. search indexing with Algolia (or Elasticsearch knowledge)

Define and implement a caching strategy suitable for read-heavy production traffic.

Collaborate closely with our Backend Lead to validate designs, review code, and ensure alignment with architectural goals.

requirements-expected :

Experience with data migration and modernization

5+ years of backend engineering experience, using Node.js with Typescript and clean architecture.

Strong experience with relational databases (PostgreSQL / MySQL)—especially schema migration and transformation tasks.

Understanding of API design, caching, and high-performance content delivery.

Comfort with asynchronous, event-driven systems (e.g., via Pub / Sub or webhooks).

Familiarity with DevOps practices and infrastructure automation (e.g., CI / CD, Terraform, Docker).

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Backend Engineer • Warszawa, Masovian, Poland

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