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Data Engineer at X4 Technology – Wrocław | Jobyssey

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Data Engineer

X4 Technology · Wrocław, Poland · 1 week ago

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Work mode: Remote
Employment: Contract
Category: Data engineering
Experience: 2+ years
Salary: PLN 200 / hour

agile api automation azure azure-data-factory bicep ci-cd cloud cloud-native csharp

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Fully remote B2B contract (6-12 months, 200 PLN/hour) for a Cosmos DB Engineer: designing scalable Azure Cosmos DB solutions, building data ingestion pipelines with Azure Data Factory, Event Hubs and Functions, tuning performance/cost, and automating deployments with IaC and CI/CD.

Job Title: Cosmos DB Engineer

Location: Fully Remote

Hourly Rate: 200 PLN per hour (B2B Contract)

Contract Length: 6-12 Months

Cosmos DB Engineer - Role & Responsibilities

Design and implement scalable, highly available Azure Cosmos DB solutions, including data models, partitioning, indexing and consistency strategies.
Build and maintain data ingestion and integration pipelines using Azure Data Factory, Event Hubs, Functions and other Azure-native services.
Monitor and optimise Cosmos DB performance and cost, including RU/s, query efficiency, indexing and partition distribution.
Integrate Cosmos DB with cloud-native applications, APIs and microservices, working closely with product, architecture and DevOps teams.
Automate Cosmos DB deployments and environments using Bicep, Terraform or ARM, incorporating testing and CI/CD practices.

Cosmos DB Engineer - Required Experience

3–6 years' experience in distributed NoSQL databases, including at least 2 years of hands-on Azure Cosmos DB (SQL API) experience.
Strong knowledge of Cosmos DB architecture, including partitioning, indexing, consistency levels, global distribution and performance tuning.
Experience with Azure Data Engineering, particularly Databricks, Data Factory, Event Hubs, Functions and related Azure services.
Strong programming skills in Python, C#/.NET or JavaScript/Node.js, with experience developing data integrations or automation.
Experience with Infrastructure as Code and CI/CD, using technologies such as Bicep, Terraform or ARM templates, alongside strong Agile/Scrum experience.

Interviews: September 2026

Start Date: October 2026

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