GTH Software, SkillOnNet's R&D center, is seeking a Principal Engineer to join our backend department and play a pivotal role in building our backend platform.

What will your days look like with us?

The Role

The Principal Engineer is our highest individual contributor role. You will shape the Platform's long-term technical direction, drive architectural strategy across multiple teams, and stay deeply hands-on. You will serve as a trusted advisor to engineering leadership and a force multiplier for the organization.

Responsibilities

• Architecture & Design

- Define and own the technical vision and architecture of the Casino Platform

- Design and evolve the platform's core systems: transaction processing, real-time event pipelines, data architecture, and API contracts

- Produce and maintain architectural blueprints, design principles, and technology roadmaps

- Evaluate build vs. buy decisions and guide the adoption of new technologies and patterns

- Establish data architecture standards across Oracle DB, MongoDB, Redis, and Elasticsearch

- Define strategies for scalability, high availability, disaster recovery, and security

• Hands-On Engineering

- Lead the design and implementation of the most critical and complex platform components

- Write, review, and validate production code — setting the standard for the engineering organization

- Drive performance engineering: profiling, load testing, and system-wide optimization

- Engage directly in critical incidents as the highest technical escalation point

• Cross-Cutting Leadership

- Act as a technical mentor and coach for senior engineers, team leads, and architects

- Partner with product, security, infrastructure, and compliance teams on platform-wide initiatives

- Represent engineering in executive and stakeholder forums, translating complex technical topics clearly

- Champion engineering culture: quality, pragmatism, ownership, and continuous improvement

- Drive technical due diligence for partnerships, integrations, and platform expansions

Requirements

- 10+ years of software engineering experience, with a strong backend and distributed systems foundation

- Recognized expertise in Java and Spring Boot at scale

- Deep, production-proven mastery of Oracle DB, MongoDB, Redis, and Elasticsearch

- Extensive experience architecting distributed, event-driven, high-throughput systems

- Demonstrated track record of defining and delivering platform-level technical strategy

- Experience operating and scaling systems on private cloud or on-premises infrastructure

- Exceptional written and verbal communication — able to influence at all levels of the organization

- Strong understanding of security, compliance, and data governance in regulated environments

Nice to Have

- iGaming, fintech, or payments platform experience at scale

- Experience with event streaming (Kafka) and real-time data platforms

- Familiarity with multi-region or multi-datacenter deployment strategies

- Prior experience as a distinguished engineer, architect, or equivalent principal-level role