Backend Developer

Quick Facts

Backend Developer working on a reactive microservices system.

Description

You’ll develop and maintain backend services in .NET and Go for a distributed microservices architecture. The work includes designing asynchronous service communication with RabbitMQ, building new components based on PostgreSQL, and supporting deployments to Kubernetes (with occasional GCP work).

Responsibilities

• Develop and maintain backend services in .NET and Go
• Design inter-service communication flows, including async pipelines based on RabbitMQ
• Help design architecture and build a new system based on PostgreSQL
• Apply design patterns and maintain code quality and readability
• Design and optimize data structures and queries
• Support deployments on Kubernetes cluster; occasional cloud tasks on GCP
• Write unit and integration tests
• Participate in code reviews and analyze business requirements

Requirements

• Minimum 2–3 years of commercial backend development experience
• Good knowledge of C# and .NET or Go, with readiness to work in both
• Practical understanding of design patterns and SOLID principles
• Experience with asynchronous communication and message brokers (RabbitMQ or similar)
• Openness to using AI programming assistants (e.g., Claude, GitHub Copilot)
• Practical knowledge of relational databases (MS SQL or PostgreSQL) and SQL
• Experience with Redis
• Knowledge of REST API design
• Hands-on experience with Docker and basic Kubernetes knowledge
• Git proficiency and experience with code reviews
• Independence and good team communication

Benefits

• Flexible working hours and hybrid work (office in Łódź at least 3 days per week)
• Employment options: employment contract, contract work, or B2B
• Co-financing via MyBenefit platform (including Multisport), life insurance, and health insurance
• Employee referral program, discounted travel offers, and integration meetings
• Participation in additional tech events (e.g., technology Fridays, hackathons)