Senior Backend Engineer
- Krakow
- Lodz
- Lublin
- Monterrey
- Montevideo
- Remote.AR
- Remote.Brazil
- Remote.Colombia
- Remote.Poland
- Rosario
- Warsaw
- Wroclaw
If you received this vacancy from our recruiters — read our Privacy Notice.
Client
The platform supports mission-critical availability, rate, and inventory flows and is designed for scale, performance, and resiliency.
Project overview
The platform is built using Microsoft technologies (.NET and Azure), with strong emphasis on Azure infrastructure, DevOps, and relational data consistency.
Position overview
Eastern European candidates are expected to maintain a 4–6 hour working overlap with the US Eastern Time zone.
Technology stack
Azure, including: Azure Virtual Machines, Azure App Gateway, Azure App Services / Functions, Azure Service Bus, Azure DevOps (pipelines, CI/CD);
SQL databases (Azure SQL, SQL Server);
REST APIs (JSON);
Event-driven architectures;
OAuth2 authentication;
Docker;
Observability & logging (Azure Monitor, Application Insights or similar).
Responsibilities
- Design, build, and maintain backend integrations with Hotel PMS and hospitality platforms.
- Implement idempotent ARI (Availability, Rates, Inventory) update mechanisms.
- Handle complex hotel distribution concepts (rate plans, restrictions, inventory blocks).
- Build and operate high-volume, low-latency distribution systems.
- Reconcile system state across event-driven and polling models.
- Design resilient integration patterns (idempotency, retries, deduplication).
- Ensure data integrity and performance in SQL databases.
- Contribute to Azure deployments, CI/CD pipelines, and operational readiness.
- Collaborate with product, QA, and partner technical teams on integration contracts.
- Troubleshoot and resolve production issues with external hospitality systems.
Requirements
- Strong experience in the travel industry and with APIs
- Strong understanding of ARI (Availability, Rates, Inventory), rate plans, restrictions, and inventory allocation.
- Experience with hospitality APIs and reconciling state across event-driven and polling systems.
- 5+ years as Backend Engineer with system-to-system integrations.
- Proficient in .NET/C#, Azure (VMs, App Gateway, App Services, Service Bus), and Azure DevOps CI/CD.
- Strong in REST APIs, event-driven architectures, and SQL databases (schema design, performance).
- Knowledge of idempotent API design, concurrency, retries/backoff strategies.
- Experience with high-throughput production systems and good English communication skills.
Nice to have
- Direct experience integrating with one or more of the following platforms:
- Oracle OPERA Cloud / OHIP
- Amadeus Hospitality Suite
- Sabre SynXis
- Cloudbeds
- Mews PMS
- Infor HMS
- Agilysys Stay
- Shiji Daylight PMS
- Experience with distributed tracing and observability
- Familiarity with high-availability, low-latency architectures
- Understanding of Agile / Scrum methodologies
Looking for Similar Opportunities?

We offer
Vacation
As per the laws of your country. We do ask you to take a proper rest
Health insurance
We help you to take out an insurance policy for you and your loved ones
Sick pay
10 days without a doctor's note, afterwards - as per the laws of your country
Time off for state holidays
According to the official calendar, regardless of the client’s schedule
Pleasant environment
Two large corporate parties and many small get-togethers for colleagues
Comfort service
Solving technical and everyday problems at work
What if I can’t find it?
FAQ for Candidates
Work on global projects, grow your career in a supportive, flexible, and innovative tech environment. We help cover the cost of IT certifications and provide access to top-tier courses and learning platforms. View current openings and take the next step with us.



