Lead Java Engineer (Payments)

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 expect engineers to be fully comfortable working in AI-driven environments and to treat AI as a primary productivity multiplier. Strong engineering judgment, architectural ownership, and accountability remain essential—AI amplifies our engineers, it doesn't replace responsibility for technical decisions.

Who We’re Looking For

We are looking for an experienced Lead Java Developer to join our dynamic team and contribute to the development of the innovative Social Casino domain. This role is ideal for someone with a strong technical background who is passionate about coding and architecture but also has a knack for leadership and mentoring. While your immediate focus will be on delivering robust technical solutions, this position also offers the opportunity to grow into a team leadership role. In this role, you will:

Lead the design of system architecture, ensuring scalability, reliability, and performance for current and future needs

Perform thorough code reviews, ensuring best practices, backward compatibility and maintainability of the solution

Analyze and improve the performance of existing applications, identifying bottlenecks and proposing innovative solutions

Ensure adherence to best security practices in the development and deployment of solutions

You will oversee a complex ecosystem of Payment Orchestrators, Global Processors, and Local Payment Methods , ensuring that our players experience zero friction from purchase to withdrawal

Lead the seamless integration of third-party Gateways, Vaulting services, and Alternative Payment Methods across diverse global markets

Own the end-to-end production health of the payment stack. Implement advanced monitoring, automated reconciliation, and rapid-response protocols for transaction failures

Serve as the technical bridge between development, QA, and product teams to ensure alignment on solutions and deliverables

Collaborate with product and project managers to plan iteration scopes and ensure timely delivery

Be a dependable point of contact for critical decision-making and delivery

If you’re passionate about building high-quality solutions and ready to make an impact, we’d love to have you on our team.

Requirements

Solid experience building and maintaining production systems using Java and its ecosystem

Solid Java knowledge with a strong understanding of JVM internals

Excellent system design skills, capable of describing, documenting, and implementing complex architectures for scalable systems

Excellent knowledge of relational database principles, preferably PostgreSQL, with proficiency in query optimization and performance tuning

AI-native mindset with deep, hands-on expertise leveraging AI tools, large language models, and autonomous agents as a default approach to problem-solving, system design, and engineering productivity.

Deep understanding of messaging concepts (preferably with the Kafka ecosystem or similar)

Good understanding of concurrency concepts and principles

Exceptional troubleshooting skills, with the ability to resolve complex production issues effectively

Demonstrated engagement and ownership, taking full responsibility for delivering solutions and driving team success

Proven ability to conduct effective code reviews, ensuring high-quality deliverables and adherence to best practices

Solid understanding of security best practices, particularly in web and backend development contexts

Leadership experience, including mentoring team members, facilitating technical discussions, and fostering a collaborative environment

At least upper-intermediate proficiency in English, with strong communication skills for technical and non-technical stakeholders

Our Tech Stack

Java 25 🔥

Spring Boot 4.0.2 🔥

Google Cloud Platform:

Kubernetes

Kafka

AlloyDB for PostgreSQL

Ebean ORM

Flyway

Redis

Quartz

Websockets

Retool

Test Containers

Locust for perf testing

Jenkins/ArgoCD

ELK/Sentry/Grafana

Jira/Confluence/Slack/Bitbucket

We offer

Modern tech stack

Fresh, well-maintained codebase featuring high test coverage

Minimal bureaucracy and fast approval processes

Ability to work with highly skilled, passionate, and supportive teammates

Chance to make a global impact by contributing to projects experiencing exponential user growth

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.