JUAN MANTICA

[email protected] +1 (857) 210-4583 Miami, FL

PROFESSIONAL SUMMARY

Senior Backend Engineer with 5+ years of experience specializing in high-scale,, and high-throughput systems at Instacart and Amazon Audible. Expert in languages critical for performance and reliability (Java, Ruby on Rails and Go). Proven ability to drive projects end-to-end, deliver multi-million dollar revenue impact, and manage complex infrastructure. Seeking a high-ownership role at a fast-moving AI or Crypto startup.

WORK EXPERIENCE

Senior Software Engineer
10/2023 - 07/2024
Instacart , Remote
Scoped, drove, and launched the Brand Explorer initiative; owned the end-to-end delivery of a major retailer product and supported rapid adoption by over 200 brands
Developed a 55-week cross-team execution plan, parallelizing work across two teams and saving 2+ months of critical development time
Designed and launched a company-wide feature-flag ownership system, ensuring infrastructure hygiene by tracking and disabling 500+ stale flags
SDE II
01/2022 - 10/2023
Instacart , Remote
Contributed to a core ads-taxonomy migration, which was instrumental in enabling new ad formats and driving $20M+ incremental annual profit
Established robust networking and Terraform infrastructure for a multi-cluster Trino deployment, enhancing large-scale data querying capabilities
Software Engineer (I & II)
08/2019 - 12/2021
Amazon Audible , Newark, NJ
Designed and launched the core Audible Plus search integration, handling a production load of 8,000+ TPS during peak service times
Automated software-update workflows across a 40-person organization, resulting in the successful resolution of 60% of org-wide security risks

EDUCATION

Suma Cum Laude
01/2019
Boston College GPA: 3.95 CS GPA

SKILLS

PROJECTS

Mihtril 🔗
Implementation engineer for Solana Validator lightweight read replicas
Delivered enhancements such as implementing metrics across the distrubuted Nodes
Papers
Peer-Assisted Content Delivery Network by Vehicular Clouds
Trading-Off Consistency, Latency, and Fault-tolerance in Cassandra
Personal Sabbatical — Monastic Program
Completed a monastic program in the Galilea focused on discipline, and long-term clarity.

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