Senior Backend Developer

Shiji is a global technology company dedicated to providing innovative solutions for the hospitality industry, ensuring seamless operations for hoteliers day and night. Built on the Shiji Platform—the only truly global hotel technology platform—Shiji’s cloud-based portfolio includes Property Management System, Point-of-Sale, guest engagement, distribution, payments, and data intelligence solutions for over 91,000 hotels worldwide, including the largest chains. 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 Performing code reviews daily 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 Kubernetes, Docker AWS (S3, EC2, ESB, Route53, CloudFront, VPC, API Gateway etc.) ELK Stack, Graphana, Opsgenie 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 Requirements description 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 Benefits What Do We Offer? Health & Well-being 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, Free group language lessons, Access to platforms like: OpenUp, GoodHabitz, Pluralsight Additional Perks 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.).