Senior Backend Developer

Zohorecruit; Katowice; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Private medical care

Group life insurance

Multisport card

Job summary

Shiji is a global technology company delivering hospitality solutions. You will contribute to a distributed system enabling reservations, payments, and hotel services across multi-tenant regions. The role focuses on building microservices, guiding teams, and maintaining live software.

The position is remote-friendly within the Polish office network, and involves cloud-native deployments on Kubernetes with CI/CD and modern tooling.

Qualifications

• Experience 4+ years in a similar role.
• Advanced Object-Oriented and/or Functional Programming paradigms.
• Good knowledge of C#, .NET, Web API (REST), Entity Framework, or any other ORM (Dapper/NHibernate, etc.)
• Knowledge of PostgreSQL or Elastic Search
• Good Knowledge of testing (Unit/Integration tests)
• Capability of writing clean code along with tests
• Being an open-minded, proactive person
• The position is offered on a 1-year contract
• Experience with Integration Systems and patterns (XML/SOAP, JSON, CSV, FTP or HTTP message transformation/delivery, competing consumers pattern, pipes and filter, off loading queue etc.)
• Experience with distributed systems, transactions, multi-tenant and multi-region systems
• Basics of Linux, Docker

Responsibilities

• Collaborating with Product Owners in grooming the business requirements before development
• Designing, implementing and then maintaining new functionalities inside a living system
• Guiding other developers into the correct implementation of business requirements

Skills

Experience 4+ years

OOP/FP

C#

REST API

Unit/Integration tests

Proactive

Tools

PostgreSQL

Elastic Search

Redis

Docker

Kong API Gateway

Kafka

Gitlab

Jenkins

Kubernetes

OpenID / Identity Server

Job description

Shiji is a global technology company dedicated to providing innovative solutions for the hospitality industry, ensuring seamless operations for hoteliers day and night.

The best hotels run on Shiji — day and night.

Your job will be to develop a part of a distributed system that serves the hospitality industry. It is a solution that allows hotel employees or hotel managers to handle various activities such as managing reservations, payments and hotel services within the hotel or between hotels. The system consists of many domain-oriented microservices developed under a few cross-functional teams.

Your responsibilities

• Collaborating with Product Owners in grooming the business requirements before development
• Designing, implementing and then maintaining new functionalities inside a living system
• Guiding other developers into the correct implementation of business requirements

Our Daily Work

• We follow Scrum with iterating Sprints, Grooming & Sprint planning sessions, Code Freeze after sprint and retrospective meetings
• We use Gitlab to sync the code with develop and master branches, and create feature branch for each User Story
• We commit daily and use CI/CD using Gitlab/Jenkins
• We open merge requests and wait for review for other team members before merge
• We use docker and docker compose for local development and deployment of all microservices
• We create nuget packages to share work with others in our own Nuget Server
• We use Visual Studio or Rider or VSC for coding
• We use teams to communicate and or participate in meetings with other team members

Technologies:

• .NET 8(C#), Web API, Entity Framework, REST
• Open ID (JWT), Identity Server, Federated Security, SSO
• PostgreSQL, Elastic Search, Redis
• Kafka
• Kong Api Gateway

Our System

• Cloud Native, deployed in Kubernetes on AWS infrastructure
• Written in .NET, API First (REST) approach with thin UI client
• Written in microservices, DDD, CQRS, Event Based, Saga Pattern for Distributed Transactions
• Multi-tenant and multi-region (US, EU, China, APAC, Middle East deployed regions)
• Green field development, with less than 5 years old code, started from scratch in .NET Core

Requirements

• Experience 4+ years in a similar role
• Advanced Object-Oriented and or Functional Programming paradigms
• Good knowledge of C#, .NET, Web API (REST), Entity Framework, or any other ORM (Dapper/NHibernate, etc.)
• Knowledge of DBs, such as PostgreSQL or Elastic Search
• Good Knowledge of testing (Unit/Integration tests)
• The capability of writing clean code along with tests
• Being an open-minded, proactive person
• The position is offered on a 1-year contract

Nice to have:

• Experience with Integration Systems and patterns (XML/SOAP, JSON, CSV, FTP or HTTP message transformation/delivery, competing consumers pattern, pipes and filter, off loading queue etc.)
• Experience with distributed systems, transactions, multi-tenant and multi-region systems
• Basics of Linux, Docker

What Do We Offer?

• Private medical care, including a dental package, for you and your family
• Group life insurance for you and your partner
• Multisport card as part of the Worksmile package

Work & Growth

• 40 hours for professional development during work hours,
• Access to platforms like: OpenUp, GoodHabitz, Pluralsight
• Worksmile cafeteria with 520 points per month,
• Referral bonus (starting from 6,500 PLN gross, depending on the position),
• Chill room with table football and PlayStation

Clause Regarding the Prohibition of Assistance Tools During Recruitment Interviews

In the interest of equal opportunity and transparency in the recruitment process, we would like to inform you that during job interviews (both remote and in-person), the following are not permitted: - the use of tools based on artificial intelligence (AI), including chatbots, response generators, translators, or content creation aids, - recording of interviews without prior and explicit consent from a company representative, - the use of applications that generate automatic notes or transcriptions of meetings (e.g., Notion AI, Otter.ai, Fireflies, etc.).