---
title: "Senior Backend Engineer (Go) at X-FLOW – Warsaw, Poland"
canonical: "https://www.metaintro.com/job/senior-backend-engineer-go-at-x-flow-07e8ac58-55da-5ee6-a0f3-e8554851884f"
language: "en"
author: "Metaintro"
---

[/company/x-flow](/company/x-flow)[X-FLOW](/company/x-flow)
# Senior Backend Engineer (Go) at X-FLOW

Department: Happy Color BackendSeniority in posting: Experienced

LanguageEnglish
Polski

**Setup**
: On-site

**Location**
: Warsaw, Masovian Voivodeship

**Type**
: Full-time

**Level**
: senior

**Posted**
: Sep 11, 2026

## Description

X-FLOW is hiring a full-time Senior Backend Engineer (Go) for its flagship mobile game project, Happy Color. The role focuses on designing and developing Go microservices and APIs, integrating external services, optimizing performance and scalability, working with databases and message queues, maintaining CI/CD and cloud infrastructure, and ensuring testing, observability, security, and architectural quality. Candidates need at least three years of commercial development experience, including three years with Golang, along with strong backend, distributed-systems, database, and infrastructure knowledge. The position offers remote or office work options and a competitive salary and benefits package.

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