Senior .NET/C# Backend Engineer - High-Scale Logistics

Allegro.eu S.A.

Warszawa

On-site

PLN 210,000 - 289,000

Full time

6 days ago
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Benefits offered by this job

Dell Laptop
Fringe benefits cafeteria plan
English classes
Training budget
Volunteer day
Hackathons
Company events

Job summary

Allegro.eu S.A. is seeking a Senior Software Engineer to own backend design and delivery for the Allegro One logistics services.

You will work in a hybrid Warsaw-based team handling high-throughput systems using C# and .NET Core, REST APIs, and PostgreSQL, with Docker/Kubernetes in a cloud-native setup. You will lead architectural decisions, ensure performance and reliability, and mentor engineers while collaborating across teams.

Qualifications

  • Extensive experience architecting high-throughput, low-latency backend systems.
  • Strong knowledge of C#, .NET Core / ASP.NET Core, and RESTful APIs.
  • Proficient with PostgreSQL and Entity Framework Core under high concurrency.
  • Experience with Docker, Kubernetes, and cloud-native environments.

Responsibilities

  • Own backend design and delivery for Allegro One logistics services.
  • Build reliable, scalable services with emphasis on performance.
  • Collaborate across teams and mentor engineers.
  • Maintain and improve CI/CD and deployment processes.

Skills

C#
.NET Core
ASP.NET Core
REST APIs
PostgreSQL
Entity Framework Core
Redis
Docker
Kubernetes
Azure
English (B2)

Tools

Azure Service Bus
Kafka
CI/CD

Job description

Allegro.eu S.A. is seeking a Senior Software Engineer to own backend design and delivery for the Allegro One logistics services.

You will work in a hybrid Warsaw-based team handling high-throughput systems using C# and .NET Core, REST APIs, and PostgreSQL, with Docker/Kubernetes in a cloud-native setup. You will lead architectural decisions, ensure performance and reliability, and mentor engineers while collaborating across teams.

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