Principal Performance Engineer

EGT Digital is a next-generation tech company focused on all online gaming products. Its portfolio includes Casino Games, Sportsbook, and the all-in-one solution – a Gambling Platform.

EGT Digital is a part of the Euro Games Technology (EGT) Group, headquartered in Sofia, Bulgaria. EGT Group is one of the fastest-growing enterprises in the gaming industry. Our global network includes offices in 25 countries, and our products are installed in over 85 jurisdictions in Europe, Asia, Africa, and North, Central, and South America.

Being a part of such a fast-moving industry as iGaming, the company knows no limits and is growing rapidly through its dedication to innovation and constant improvement. This is why we are expanding our Platform&Payments team and now looking for some fresh and enthusiastic people to come and join us in the exciting digital world of iGaming.

About the role

We are seeking a Principal Performance Engineer to lead and optimize the performance, scalability, and reliability of EGT Digital’s iGaming platform and its related systems. Your expertise in identifying and resolving bottlenecks will ensure seamless operations, particularly in high-traffic environments such as those found in casino games, sports betting, and payment processing.

Responsibilities

• Design, implement, and execute comprehensive performance testing strategies, including load, stress, capacity, scalability, and endurance testing, to evaluate system behavior under varying conditions
• Leverage industry-standard tools such as JMeter, Gatling, or k6 to simulate realistic user loads and assess application performance
• Analyze performance metrics and system logs to identify bottlenecks, latency issues, and failure points, ensuring root cause identification
• Prepare in-depth performance testing reports, providing actionable insights and recommendations for improvements
• Collaborate with cross-functional teams—including Development, DevOps, QA, and Infrastructure—to diagnose and resolve performance-related challenges
• Optimize test scenarios, scripts, and code while assisting teams in enhancing application code, database queries, and infrastructure configurations to boost overall system performance
• Partner with the Architecture team to develop and implement tuning strategies for hardware, software, network, and database components to meet business performance requirements
• Suggest improvements in performance monitoring tools (e.g., Grafana, Prometheus, ELK) and real-time dashboards in collaboration with the DevOps team, enabling continuous insights into system performance
• Define and enforce performance benchmarks and standards, conducting regular tests to ensure compliance
• Develop and report performance KPIs to stakeholders, providing transparency and accountability
• Contribute to technical infrastructure capacity planning with the IT team, ensuring systems are equipped to handle projected growth and peak usage scenarios.Evaluate third-party integrations and APIs (e.g., game providers, payment gateways) to assess and mitigate performance risks.
• Document performance test plans, results, and remediation strategies comprehensively, ensuring clear communication of findings and solutions.Provide training and mentorship to Development and QA teams, promoting adherence to performance best practices and methodologies

Requirements

• Recommended 5 years of experience in performance and automation testing
• Proficiency in tools like JMeter, Gatling, k6, or similar
• Experience with programming/scripting languages (Java, Python, C#, JavaScript)
• Familiarity with APM tools (Dynatrace, New Relic, AppDynamics) is a strong advantage
• Knowledge of SQL and database performance tuning (indexing, query optimization, execution plans)
• Solid Hands-on experience with performance monitoring tools (Grafana, Prometheus, ELK, Splunk)
• Strong analytical and problem-solving skills
• Excellent communication skills to convey technical findings to non-technical stakeholders
• Ability to work collaboratively across teams

Nice to have:

• Certifications in performance testing tools or cloud technologies
• A personal style that demonstrates authority, commitment, and consistency, inspiring trust and confidence

What we offer

• Competitive salary
• Performance-based annual bonus
• Performance evaluation & salary review twice a year
• 25 days paid annual leave
• Work from home option -2 days weekly
• Flexible working schedule
• Additional health insurance – premium package
• Fully paid annual transportation card
• Fully paid Sports card
• Free company shuttle to the office
• Sports Teams/Sports events
• Professional development, supportive company culture, and challenging projects
• Company-sponsored trainings
• Tickets for conferences and seminars
• Team building events and office parties
• Referral Program
• Free snacks, soft drinks, coffee, and fruit are always available
• Birthday, newborn baby, and first-grader bonuses
• Corporate discounts in various shops and restaurants
• State-of-the-art modern office
• Positive working environment and chill-out zone (PS4, foosball-table, and lazy chairs)

All applications will be treated in strict confidentiality and only the approved candidates will be invited to an interview.