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Senior Performance Engineer

Krakow - Products

Senior Performance Engineer

Seeking a Senior Performance Engineer to join R&D and drive end-to-end performance optimization. This role focuses on identifying, analyzing, and resolving application performance bottlenecks to increase resiliency, scalability, and stability across distributed systems.In addition to driving end-to-end performance optimization, take ownership of performance within the value stream by guiding development teams and fostering continuous improvement in support of Backbase R&D’s 'Performance by Design' principle.

What you'll do

- Drive performance within the value stream by serving as the go-to expert for all performance-related matters, providing guidance to development teams and taking full ownership of performance outcomes.

- Be an active member of the performance guild

- Develop and execute performance test strategies targeting critical application paths and infrastructure layers.

- Design and maintain load testing scenarios to simulate production-like conditions using tools such as Gatling, JMeter and K6

- Analyze system behavior under load, isolate latency sources, and drive optimization efforts at application and platform levels.

- Partner with SRE, infrastructure, and observability teams to build performance dashboards and proactive alerting mechanisms.

- Integrate performance testing in CI/CD pipelines to enforce baselines and detect regressions.

- Perform root cause analysis of incidents and contribute to long-term remediation strategies.

- Validate scalability and throughput improvements following system changes or architectural redesigns.

- Collaborate with development teams to enforce performance-conscious coding practices and architectural patterns.

Who you are

- Strong experience in Java application performance tuning.

- Multiple years of software quality engineer experience with Java in microservice environments

- Deep understanding of JVM performance metrics and GC tuning.

- Hands-on experience with distributed systems and microservices performance diagnostics.

- Experience with performance tools like Gatling, JMeter, Grafana K6 and CI/CD tools such as Github Actions

- Experience working in containerized environments (Docker, Kubernetes).

- Skilled in metrics and observability tooling (e.g., Prometheus, Grafana, OpenTelemetry).

- Strong analytical skills for interpreting performance data and generating actionable insights.

Preferred Qualifications

- 5+ years in performance engineering or similar roles in high-throughput systems.

- Exposure to chaos engineering principles as they intersect with performance testing.

- Experience in financial systems or similar latency-sensitive domains.

- Familiarity with cloud-native performance challenges (preferably Azure).

- Understanding of load balancers, caches, and messaging systems performance impact.

- Experience with network-level performance tuning and protocol-level optimizations.

- Experience with Spring framework and tuning JVM

Culture

Our Perks

Loud and busy sometimes but always friendly, helpful, and super fun. We love to celebrate each other’s achievements, share jokes, and our love for food, movies, traveling, and sports. We’re one big and diverse family working towards the same goal.

Insurance

Private health insurance for you and your family members.

Training budget

Specific budget for your personal development.

Health

Access to Insight Timer app - increase well-being and balance in our daily lives.

Referral

Referral bonus incentive for bringing the best talent.

Clothing

You can wear clothes you feel comfortable in.

High spec equipment

We provide all employees with high-spec Macs and tech set up.