Vasily Suslov

• Led a cross-team initiative across three groups to expand Replicant into webchat and SMS channels, re-architecting an existing MVP product, which increased availability from 99% to 99.95%, redcued P50 latency from 4-5 seconds to ~350ms per conversation turn, and improving portability of existing voice bots by at least 70% (from months to weeks)
• Designed and led the development of Spanalyzer, a scalable framework for analyzing conversational turn latency and availability by extracting and analyzing tracing data across distributed services. The framework delivered precise performance metrics, enabling teams to identify bottlenecks and directly observe user-perceived latency across 10+ mission-critical services
• Led and implemented key SRE improvements for the chat-based channels, including establishment of SLIs and SLOs, designing and developing end-to-end Probe and load testing infrastructure, and optimizing architecture by removing relational database dependency for ephemeral data, resulting in reduced latency and improved system reliability
• Spearheaded the organization's adoption of OpenTelemetry, enhancing trace instrumentation and analysis capabilities across teams. Led instrumentation of key services, established best practices, and built scalable infrastructure to simplify onboarding for new teams (< 100 lines of code per service)
• Optimized Text-to-Speech (TTS) latency by 90% (total savings of 100-150ms per conversation turn) for voice through geographical replication, L7 caching, and establishing a security classification model that identified and enabled low-risk bot responses to be cached for faster retrieval
• Drove improvements to developer productivity by establishing and improving internal tools and processes, reducing dev environment setup time from 2-3 weeks to 1-2 days
• Mentored senior and staff engineers on career progression and skill development, fostering a culture of continuous growth and collaboration

• Handpicked as one of two Principal Engineers to lead a comprehensive overhaul of Elemy's technical architecture, enabling a 300% increase in client base and supporting expansion from 10 to 16 US states, with 6 new therapeutic offerings
• Guided the engineering organization through a strategic transition from a complex Rust-based microservices ecosystem on Kubernetes to a streamlined architecture built on Hasura, GraphQL, and a Kotlin-based monolith
• Architected and led cross-functional teams in building an Electronic Health Records (EHR) and Practice Management Systems (PMS), streamlining therapist workflows for client progress tracking, billing, and payroll processing
• Led the design and deployment of a Customer Identity and Access Management (CIAM) system, resulting in an 800% increase in conversion rates while significantly reducing operational overhead
• Spearheaded CI/CD and end-to-end testing initiatives, slashing deployment times by 50% and reducing production incidents by 40%

• Technical leader for Inbound Workflows domain within Fulfillment by Amazon (FBA)
• Responsible for shaping overall domain technical vision, best practices, design reviews, hiring, and mentoring
• Led numerous projects involving cross-functional teams, including new initiatives, migrations, and critical fixes

• Designed and delivered a low-latency, high-throughput monitoring solution for a Tier-1 platform responsible for secure communication between Amazon's backend services
• Received an "Outstanding" work term evaluation for exceptional contributions.

Designed and built an iOS app for the sports industry, designed a non-relational backend data model, and built a real-time service using Twitter Streaming API.

Designed and built an internal expense management software via ASP.NET, C# and jQuery.

Provided technical support, developed internal tools, and created client satisfaction strategies.