Constantine Vassilev
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Principal Engineer | Go, Kubernetes, AI Infrastructure | Creator of MCP Agent Runtime | Scalable SaaS & GenAI Platforms
Washington, United States
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Consultant - AI Research for Hedge Fund/Family Office ConsultingArootahFeb 2025 - Current (11 months)Member of the Advisory Team supporting hedge funds and family offices with applied AI, cybersecurity strategy, and scalable data systems.- APrincipal Engineer - GenAI and Scalable Cloud ArchitectureAITrailblazerNov 2024 - Current (1 year 2 months)Project Lead: GenAI Infrastructure and Azure AI Solutions Core Technologies: Go, Azure AI Foundry, Azure OpenAI, Cosmos DB, Azure Functions, GitHub Actions, RAG Pipelines, MCP Protocol, DiskANN, Azure DevOps Lead the architecture and development of production-grade AI platforms using Microsoft Azure. Focus on scalable backend systems that operationalize large language models, semantic search, and retrieval workflows across a modern Azure cloud stack. Key Responsibilities and Contributions: GenAI Application Development and Azure Integration Design and deploy AI-powered applications using Azure OpenAI, Azure AI Foundry, and other native services including Cosmos DB and Azure Functions Deliver LLM-based platforms such as Filing Navigator A
- SSENIOR SYSTEMS ENGINEER, SS&C TECHNOLOGIES, INC.SSC TechnologiesNov 2022 - Nov 2024 (2 years 1 month)**SENIOR SYSTEMS ENGINEER, SS&C TECHNOLOGIES, INC.** **Project Lead: Scalable SaaS Infrastructure and Platform Engineering** **Core Technologies:** Go, Kubernetes, OpenAPI, gRPC, Temporal, PostgreSQL, Flux, AKS, Buildpacks, GitHub Actions, RAG Systems Led the architecture and implementation of backend infrastructure supporting large-scale, high-throughput B2B SaaS platforms. Focused on distributed system design, Kubernetes-native orchestration, and standardized API integration across services. Additionally, leveraged AI technologies to enhance system capabilities. **Key Responsibilities and Contributions:** - **Platform Enhancements and System Automation** Developed a GPT-integrated alerting pipeline for Kubernetes events, red
- SSENIOR SOLUTION ENGINEERSkw Technologies StartupJul 2022 - Aug 2022 (2 months)Product Lead: Ultra-Low Latency Infrastructure and API Platform Engineering Core Technologies: Go, gRPC, OpenAPI, Envoy, Python, Microservices, Financial Systems Served as product and systems lead for the design and delivery of a high-performance trading and market access platform, with an emphasis on ultra-low latency processing, scalable microservices, and clean API contracts. Key Responsibilities and Contributions: Market Access Infrastructure Contributed to the architecture of a proprietary market access system targeting ~10 nanosecond response times for financial transactions. Authored internal technical documentation, protocol integration guides, and system handoff materials to support downstream adoption. Backend Modernization a
- USENIOR SOFTWARE ENGINEERUptimaOct 2021 - Apr 2022 (7 months)Enterprise Integration and API Engineer Core Technologies: Go, GCP, MuleSoft, Salesforce (Apex, Experience Cloud), Jitterbit, REST APIs Led integration and backend modernization initiatives across CRM, middleware, and cloud environments. Focused on improving system interoperability, API performance, and user-facing reliability across B2B enterprise workflows. Key Responsibilities and Contributions: Enterprise Integration Architecture Designed and implemented integrations across MuleSoft, Google Cloud Platform, and Salesforce environments to support unified business logic and cross-platform automation. Improved system interoperability and reduced manual data handling, resulting in a 30 percent increase in throughput for core business pro
- CSENIOR SOLUTION ARCHITECT | DIGICERTContract Professionals IncNov 2020 - Sep 2021 (11 months)Led the architecture and delivery of scalable infrastructure powering DigiCert’s enterprise and e-commerce API platforms, supporting over 100,000 global customers with 99.95% uptime. Focused on high-throughput backend design, persistent caching, and deep Salesforce integration. Designed and implemented a caching microservice using Go, Flatbuffers, and Snappy, resulting in a 20x boost in data transmission speed. Migrated legacy Python infrastructure to Go to improve maintainability and performance under load. Engineered low-latency storage layers using RocksDB and bbolt, building Go–C++ interfaces to optimize retrieval operations in Kubernetes environments. Integrated Apttus and Salesforce APIs with custom Go services and deployed within K
- CSENIOR SOLUTION ARCHITECT | UPTIMAContract Professionals IncNov 2020 - Sep 2021 (11 months)Architected, designed, and developed enterprise and e-commerce web services, API, and SDK for DigiCert, a client of UPTIMA, handling over a hundred thousand customers with 99.95% uptime.
- MSolution Architect/Senior Software Engineer II - AI/ML - GCP - BigQuery MLMelissaJul 2003 - Aug 2020 (17 years 2 months)Led the architecture, development, and performance optimization of Melissa’s flagship SaaS platforms and backend services, supporting large-scale data enrichment, geolocation, and fraud prevention systems for enterprise clients. Focused on cloud-native infrastructure, ML-driven enhancements, and persistent storage design across GCP and on-prem environments. Designed and delivered Personator, a high-throughput SaaS platform for customer and entity enrichment. Scaled the system to support millions of records with 99.95% uptime, establishing it as Melissa’s top revenue-generating product. Developed an AI/ML pipeline for geolocation enrichment over 150M+ property records. Used BigQuery ML to train an iOS-compatible address parsing model, impr
Education
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- Lightning Web Components Specialist SuperbadgeTrailhead By SalesforceJul 2020 - Current (5 years 6 months)
- MMuleSoft Certified Developer - Level 1 (Mule 4Mulesoft Training
- MMaster’s Degree, Electrical Engineering and Computer ScienceMS in Electrical Engineering Computer Science
- CDocuSign eSignature Implementation Consultant 2021Credly