About the Position

Senior Backend Engineer (Payments)

Ukraine

About Patrianna

Patrianna is a fast-scaling product development company headquartered in Gibraltar, with a dynamic, global team powering our growth. We operate at the intersection of technology and entertainment, building innovative solutions that shape the future of social gaming and deliver outstanding experiences to millions of players worldwide.

We’re driven by speed, ambition, and bold ideas. At our core, we’re product creators and problem-solvers who thrive in a high-performance environment. We’re looking for exceptional talent-smart, adaptable, and motivated individuals eager to make an impact, scale business functions at pace, and continuously improve.

AI-Driven Engineering Culture

We are actively building an AI-driven engineering organization with a clear and deliberate stance: artificial intelligence is a core part of how we build and deliver software - not an experiment, not a trend, and not an optional add-on.

AI is embedded into our engineering workflows, from system design and prototyping to refactoring, testing, and code review. We rely on AI to significantly influence how work is done and to accelerate delivery, while maintaining a high bar for code quality, system reliability, and architectural clarity.

We expect engineers to be fully comfortable working in AI-driven environments and to treat AI as a primary productivity multiplier. Preference for AI-free workflows or resistance to AI-assisted development is NOT aligned with how we operate.

Strong engineering judgment, architectural ownership, and accountability remain essential. AI amplifies our engineers - it does not replace responsibility for technical decisions.

The Role

You’ll architect and build scalable Java solutions that power our global social gaming platform, reaching up to 150 million customers worldwide.

Responsibilities

Write well-designed, testable, and scalable code in a timely manner
Take part in the full development cycle from sprint planning to release cycles
Ensure smooth development and cooperation between dev teams and product owners
Build and maintain high-load systems that handle massive scale
Troubleshoot production issues using metrics, alerts, monitoring, and profiling
Contribute to seamless scaling and automation initiatives

Requirements

Extensive experience as a Java Engineer with strong Java Core knowledge (Java 8+)
Proven expertise in multithreading and high-load systems
Solid SQL knowledge and database optimization skills
Strong experience with Docker (docker swarm) and containerization ecosystem
Excellent troubleshooting skills with production monitoring tools (metrics/alerts/monitoring/profiling)
Good English communication skills in speaking and writing
Experience with SPA and modern mobile and web technologies

Nice to Have

Experience with Clickhouse, GCP, Kafka ecosystem, ElasticSearch, Ebean, Protobuf, InfluxDB/Grafana, Google Services integration, or wallet service maintenance.

Main Technologies We Use

Java 25
Spring Boot 4
Spring 7
Google Cloud Platform
Kubernetes
Kafka
AlloyDB for PostgreSQL
Spanner
Ebean ORM
Flyway
Redis
Quartz
Websockets
Retool
Test Containers
Locust for perf testing
Jenkins/ArgoCD
ELK/Sentry/Grafana
Jira/Confluence/Slack/Bitbucket

Why You Will Love It

You’ll work in a high-pace, high-growth environment where your code directly impacts millions of users globally. Enjoy full remote flexibility, generous leave policy, and the chance to shape cutting-edge fintech solutions in social gaming. Plus, you’ll be part of a collaborative, ego-free team where your ideas matter and continuous learning is part of the culture.

Senior Backend Engineer (Payments)

Job description