# Stany Fargose > Cash App Engineering @ Square | Ex-Amazon Location: San Francisco Bay Area, United States Profile: https://flows.cv/stany Staff Software Engineer · Distributed Systems · Financial Infrastructure I build 0-to-1 platforms where correctness is a product requirement, not a monitoring concern — a bug isn't a metric regression, it's someone's rent money or a $30B capital position that doesn't reconcile. At Block (Cash App), I architected Tycoon — Cash App's proprietary capital markets platform replacing Moody's Analytics, now managing $30B+ in investor capital across four countries. The system processes 9M+ transactions in burst windows of minutes, delivers 100M+ row reports, and has launched across four markets with zero discrepancies on day one each time. I also built Messari, Cash App's first double-entry accounting engine for regulated consumer lending, and an AI-powered oncall skill that cut incident response from 1 day to 10 minutes. At Amazon Alexa, I led the platform serving 20M+ daily customers and 80M+ events/day. I migrated the Alarms visual experience to APL — enabling Samsung, Lenovo, and Facebook Portal and cutting UX release cycles from 2 months to 2 days. I built the personal data search system I demoed to Jeff Bezos, indexing 2.7B+ calendar entries. Before Amazon, I grew from engineer to Tech Lead Manager at Monster.com, leading a full microservices and DevOps transformation — back when both were genuinely novel. Open to Staff/Principal roles in distributed systems, fintech infrastructure, or AI platform engineering. ## Work Experience ### Staff Software Engineer, Cash App @ Square Jan 2021 – Present | San Francisco, California, United States Staff IC at Cash App Lending, owning end-to-end delivery of critical financial infrastructure managing $30B+ in investor capital and ~$450M+ in annual fee revenue. • Tycoon (Capital Markets): Architected Block's first in-house capital markets platform replacing Moody's across US, GB, and NZ — $30B+ investor capital; 100M+ row pledge reports in <1 min; <0.25% data mismatch at cutover; automated SFTP delivery eliminating 2+ hrs/day of manual Treasury Ops work. • AU Funding Launch: Led Australia funding migration (dual-lender NAB+Citi, 25M+ order backfill); launched Nov 2025 with zero discrepancies — ~$26M/day (~$9.7B annualized). Presented at Commerce All Hands. • Scaling & Reliability: Aurora → DynamoDB migration supporting 6M tx/day; novel key design cut storage ~50%; improved pledge report P99 67.5% (4s→1.3s); handled $415M+ Black Friday pledge while cutting CPU 55%→31%; drove off-balanced orders from thousands → <10. • Messari (Double-Entry Accounting): DRI for APCAC integration ($185.4M projected 2026 volume); full Finance reconciliation delivered pre-GA. • AI Enablement: Standardized AI workflows across Lending; reduced on-call incident investigation from ~1 day → ~10 min ### Lead Software Engineer @ Amazon Jan 2018 – Jan 2021 | Santa Clara, California, United States Lead SWE on the Alexa Timers & Alarms platform — 20M+ daily customers, 80M+ events/day. Designed and delivered major cross-org initiatives spanning NLU, device APKs, APL rendering, and distributed scheduling. • APL Migration: Led Alarms migration from Amazon-only APK to APL, enabling third-party devices (Samsung, Lenovo, Facebook Portal); reduced UI release cycle 2 months → 2 days; 4M pages/day. Contributed scroll picker component to the APL core SDK — adopted by 4 Amazon teams. Zero Sev-2 on a VP-level deadline. • Personal Data Search: Built real-time PubSub ingestion library adopted by 4 Alexa domain teams; indexed 2.7B+ calendar entries (6.18TB); enabled Alexa personal queries for the first time. Jeff Bezos attended the demo. • Cross-Device Alarms: Identified customer pain point from friction data, designed a solution spanning 6 Amazon platform services, and led to delivery in 6 months — 4M+ daily customers, <20ms latency impact, zero Sev-2 at launch. • Bar Raiser (Operational Excellence) — established coding guidelines and design templates adopted org-wide. ### Tech Lead Manager @ Monster Jan 2005 – Jan 2018 | San Francisco Bay Area 12+ years of progressive technical leadership at Monster's Military Division, growing from Senior SWE to Staff/TLM serving ~50M military members across ~800 US bases. Owned architecture, roadmap, team management (5–8 engineers), and full engineering process. • Base Guide (2011–2015): Architected an 8-microservice military community platform pre-mainstream microservices era — community forums, search, news, social features, and communications. Redis caching delivered 5–10x page load improvements; Redis-backed People You May Know API met <200ms SLA for 50M members. • DevOps Transformation: Drove deployment from weeks → minutes — SVN→GitHub, Ant→Gradle, CircleCI, Artifactory, Chef, Docker/Swarm on AWS. First fully automated, zero-ticket deployments for the team. • Email Platform: Designed centralized JMS email pipeline (JBoss HornetQ) used by 25+ site verticals — reduced email-triggered request latency 2s → 100ms; handled millions of transactional emails/month. • Fatwire Crisis Recovery: Sole Fatwire expert resigned with no docs mid-project. Self-taught the system from source, reverse-engineered all customizations, delivered blocked projects on time — estimated $200K–$400K+ in contractor costs avoided. • Engineering Standards: Established design doc templates, API-contract-first development, PR code review culture, and operational runbooks adopted across the division. ## Education ### MS in Computer Science Lamar University ### Bachelor of Engineering - BE in Computer Engineering Mumbai University ## Contact & Social - LinkedIn: https://linkedin.com/in/stany-fargose-0470804 --- Source: https://flows.cv/stany JSON Resume: https://flows.cv/stany/resume.json Last updated: 2026-04-12