Dennis Vincent Wang

S

Engineering Manager at BlackRock · Elasticsearch, A/B testing

BlackRock
Dallas, TX · CT (UTC-6)
11+ years experience
UT Austin
English
Messaging unavailable

Overview

I lead search and ranking at BlackRock in Dallas. Wrote the A/B testing service that now handles 74 million requests a day. Brought on-call pages for search down from 36 a week to 3. Before that: Wayfair and Etsy. Learning Japanese, slowly.

Good reasons to reach out
  • Thoughtful intros to people in my field
  • Second opinions on Lucene decisions
Please don't message about
  • Generic networking requests
  • Recruiters for roles outside my stack
  • Courses and coaching offers

Best reached early in the week

Skills
LuceneA/B testingScalaElasticsearchlearning to rankJava

Experience

  1. Engineering Manager
    Jun 2025 - Present
    BlackRock · 1 yr 4 mo · Full-time · Dallas, TX
    • Brought on-call pages for search down from 13 a week to 3.
    • Moved 78% of search traffic off a legacy monolith without a customer-facing incident.
  2. Software Engineer
    Aug 2023 - Jun 2025
    Wayfair · 1 yr 10 mo · Full-time · Dallas, TX
    • Reduced cloud spend on search by 23% in two quarters.
  3. Software Engineer
    Jun 2021 - Aug 2023
    Etsy · 2 yr 2 mo · Contract · Dallas, TX
    • Moved 70% of search traffic off a legacy monolith without a customer-facing incident.
  4. Senior Software Engineer
    Jul 2018 - Jun 2021
    Intel · 2 yr 11 mo · Full-time · Dallas, TX
    • Led the migration of 40 services to learning to rank.
  5. Software Engineer
    Aug 2015 - Jul 2018
    HP · 2 yr 11 mo · Full-time · Dallas, TX
    • Shipped 10 launches on the search team without a rollback.
    • Reduced cloud spend on search by 30% in two quarters.

Projects

Side project: a recipe search engine
2023

Built with Elasticsearch and A/B testing. 1618 people used it last year.

References

No references yet.

Education

  1. UT Austin
    BS, Electronics and Communication
    2008 - 2012

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