The XYZ formula
Google's hiring guidance: write bullets as "Accomplished [X], as measured by [Y], by doing [Z]." Start with a strong verb, name a concrete result with a number, and say how you did it. Every example below follows it; swap in your own metrics.
Scale & throughput
- Built REST and gRPC APIs serving 2M+ daily requests (10,000 req/s peak) at 99.95% uptime.
- Engineered an event-driven pipeline (Kafka) processing 2TB of log data daily across distributed workers.
- Architected a multi-tenant platform that scaled from 3 to 12 nodes to serve 12,000+ enterprise users.
Performance & reliability
- Cut p95 API latency 40% (820ms → 490ms) by adding a Redis caching layer and eliminating N+1 queries.
- Reduced duplicate-charge incidents 92% by implementing idempotent, event-driven reconciliation.
- Raised cache hit ratio from 72% to 95%, reducing database load 30% under peak traffic.
Data & architecture
- Redesigned the indexing strategy on a 40M-row table, improving data-retrieval times 35%.
- Migrated a monolith module to microservices, improving deploy frequency from weekly to daily.
- Designed and shipped 25+ REST endpoints powering the core checkout service.
Cost, quality & leadership
- Cut AWS monthly compute spend 18% through right-sizing and spot-instance adoption.
- Raised backend test coverage from 48% to 86%, reducing production incidents 40%.
- Led 4 engineers and set the team's API-design and observability (OpenTelemetry) standards.