Implementing and delivering the Card Issuing core applications — from Card Issuing lifecycle to Transactions clearing & settlement.
Architecting and guarding performance and reliability of Card Issuing solutions.
Being the technical cornerstone of the platform’s stability, influencing architecture, writing code, and solving performance challenges.
Reviewing critical solution designs and challenging architectures with performance or reliability risks.
Architecting and operating centralized performance and load testing platform.
Designing and leading critical end-to-end performance tests and Chaos Engineering exercises.
Analyzing long-term performance metrics (SLOs) to identify regressions and drive resolution.
Leading war rooms for performance incidents, diagnosing systemic root causes.
Recommending solutions, optimizing critical code paths, and demonstrating fixes to development teams.
Liaising with SRE and operations teams of internal and external clients.

5+ years of proven experience with deep, hands-on expertise in a language like Java, or Python.
Knowledge of legacy and public cloud environments (GCP, AWS).
Deep understanding of large-scale distributed systems: concurrency, queuing, caching, consistency, and failure modes.
Expertise across communication patterns: synchronous/high-throughput APIs, event-driven architectures (Kafka), and large-scale batch processing.
Expertise in Application Performance Monitoring, database performance optimization (Oracle, PostgreSQL), network analysis, and low-level system performance.
Proficiency with observability tools: Prometheus, Grafana, and distributed tracing frameworks.
Strong technical leadership: ability to mentor senior engineers and influence architecture decisions across multiple teams.
Excellent communication skills — able to explain complex technical concepts clearly to diverse audiences.
Strong ownership mindset with a bias for action and measurable delivery.
Full professional proficiency in English.
Experience in the payments or card issuing domain.
Background in chaos engineering tooling or reliability frameworks (e.g., SRE practices, SLO/SLA management).
Experience mentoring or coaching engineering teams on performance best practices.

Performance & Reliability Engineer

Key skills