Maciej Kalisiak

Staff Engineer (L6) – TLM, IC

• Managed team of 7 in 6mo+ effort modernizing our prod deployment layout.
• Drove Incident Response in a handful of critical (SVP+ visibility) outages; in particular:
  • Led team to:
    • deploy Google's load-shedding technology across all our key binaries (6)
    • simplify approach by turning down & eliminating outdated, complex stack feature
  • (IC) Designed & rolled out a quick'n'dirty loadtest framework to reproduce the detected spam attack vector, confirming robustness of our mitigations.
  • (IC) Designed & implemented biasing mechanism into our store-and-forward architecture
• (IC, sideproject) Modernized Gmail's primary (but very aged) debugging tool: rapid implementation in Colab notebook, added new features, Gemini-integration.
• Drove a variety of latency improvements, as well as better measurement; collaborated with our SREs on implementation & debugging of latency SLOs for our service.
• Executed broader team toil reduction initiatives, including tracking & analysis of our Release and OnDuty rotations time spend, retiring low value testing infra, merging rotations.
• Took over & rolled out complex but launch-critical application licensing work; executed across 4+ layers of teams, escalations, debugging of the underlying brittle infrastructure.

Staff Engineer (L6) – TLM

• Team Growth & Management:
  • Instrumental in growth and leadership of the first GCP team in the Waterloo office. GCP now has several hundred engineers in Waterloo.
  • Partnered w/Senior Leadership to rapidly grow GKE team in Waterloo.
  • Onboarded and ramped-up 2 new managers, off-loaded reports (reached ~17 reports for 5+ months).
  • Critical leader who navigated unique challenges: COVID, performance issues, culture friction between employees and externally hired leadership.
  • Rapidly built & led a strong team for Anthos Observability in response to sudden mandate; high team promotion rate (~80%).
• Observability Team Leadership:
  • Team took on mandate to build and enhance observability through all layers of GKE; built event collection & repository, Datadog-inspired visualization.
  • Took over Anthos Observability (monitoring, metrics, and logs) from the disbanded Stackdriver team; reworked as a common solution across OnPrem, OnBareMetal, and OnAWS.
  • Grew to include lower-level Kubernetes observability after absorbing scope from sister team.
  • Visualization of Cluster History in Pantheon.

Senior/Staff Software Engineer (L4–L6) / TLM

• Next-gen Serving System:
  • Designed and rebuilt the overall control flow structure (FSM) of central "mixer" service.
  • Re-implemented the overall ad targeting flow logic, to parallelize calls to ad exchanges and real time bidders.
  • Led design & reimplementation of a more light-weight "targeting signal" computation, to better fit real-time bidder deadlines.
  • Owned the entire next-gen launch: experimentation, validation, and production rollout.
  • Led team (design, implementation) to devise a turn-key solution for quickly building & introducing further ad provider services (used for AdSense Direct Sales & X-Ads).
• Data Architecture & APIs:
  • Co-designed and implemented the API, architecture, plumbing for data about the Publisher.
  • Co-designed the unified API for representing which ads won (originally highly heterogeneous, esp. between auction & reservation systems).
  • Designed & induced a more structured form for our central ad request/response API (initially mostly flat "kitchen sink").
• Ads Experiments Infra (production-live A/B experimentation system handling trillion events/day): Modernized through flag API update, introduced file-valued flags, better dashboards.
• Skunkworks team: pursued a number of experimental but critical issues:
  • Developed emergency release procedure & tooling to bring down cherry-pick binary push process from ~8h to ~1h.
  • Tool for correlating prod anomalies with system changes (e.g., binary release, experiments).
• Compliance:
  • Designed & implemented frequency capping for mobile ads.
  • Ensured COPPA compliance of our team's primary servers.
  • Implemented Gambling advertiser blacklisting.