Aaron Dsilva

Leading technology strategy and engineering for e-commerce SaaS platform. Architecting multi-vendor marketplace infrastructure, building distributed engineering team, and driving product roadmap from technical perspective. Full-stack development, cloud architecture, and operational excellence across entire engineering organization.

• Architect scalable e-commerce platform infrastructure supporting multi-vendor marketplace model with real-time inventory, payments, and vendor management systems
• Lead technical roadmap and engineering team structure, establishing development processes, CI/CD pipelines, and quality assurance standards
• Build cloud-native architecture on AWS with focus on cost optimization, security, and 99.9% uptime SLA for mission-critical e-commerce operations
• Drive technical decision-making for mobile (React Native/Flutter), backend (Node.js), database (MongoDB/PostgreSQL), and cloud infrastructure choices

Domain: E-commerce SaaS | Architecture: Multi-vendor marketplace, real-time systems | Leadership: CTO-level strategic + hands-on execution

Co-founded product development studio building secure, AI-powered systems for healthcare, e-commerce, and security clients. Lead distributed team of 10 engineers across time zones. Hands-on development across mobile, backend, cloud infrastructure, and AI/RAG systems. Shipped 6 products to production spanning healthcare (King's College London, European hospitals), e-commerce (multi-vendor marketplace), security (ISO 27001 pen testing platform), and research tools.

• Achieved $1M+ annual AWS cost savings (33% reduction) for healthcare client through architecture optimization: right-sizing EC2 instances, implementing auto-scaling, optimizing RDS usage, and eliminating unused resources
• Built HIPAA-compliant AI ambient listening system for clinical documentation: AWS Comprehend Medical for PHI extraction/anonymization, Claude API for summarization, Neo4j knowledge graphs for relationship mapping, deployed to hospitals across US and Europe
• Rebuilt failing multi-vendor e-commerce marketplace from constant crashes to 100% uptime: complete Flutter mobile app rewrite, Node.js backend with MongoDB, vendor management dashboards, real-time inventory sync
• Developed ISO 27001-compliant pen testing workflow platform connecting security testers to development teams: NestJS backend, centralized vulnerability tracking, regression testing, remediation verification for enterprise clients
• Created MCP (Model Context Protocol) server for healthcare research enabling no-code data access for researchers at King's College London and European hospital networks: real-time analytics, HIPAA-compliant data handling, GDPR consent management
• Rebuilt women's health platform V2 (UK/Africa markets) in Flutter: cycle tracking, telemedicine provider connections, multi-language support (English, French, Swahili), GDPR compliance with right-to-be-forgotten implementation

Domains: Healthcare AI, E-commerce, Security/SaaS, Research Tools | Compliance: HIPAA, GDPR, ISO 27001 | Clients: King's College London, European hospital networks | Markets: US, UK, Europe, Africa, India

Full-stack development for HIPAA-compliant healthcare SaaS platform serving 100+ hospital organizations across US and India. Led security remediation implementing all pen testing fixes in production code (React Native mobile, Flask backend). Built AWS infrastructure with PostgreSQL Row-Level Security (RLS) for multi-organization data isolation. Maintained 99.9% uptime with zero security incidents while passing FDA, HIPAA, SOC2, and ISO 27001 audits.

• Led pen testing remediation across entire codebase: identified and fixed security vulnerabilities in React Native mobile app and Flask backend, implemented all recommendations from third-party security audits, passed FDA/HIPAA/SOC2 compliance audits with zero critical findings
• Architected AWS infrastructure for secure multi-tenant SaaS: PostgreSQL with Row-Level Security (RLS) for organization data isolation, encrypted data at rest and in transit, implemented role-based access control (RBAC), audit logging for compliance
• Achieved and maintained 99.9% uptime serving 100+ healthcare organizations processing thousands of daily transactions: built monitoring and alerting systems, implemented disaster recovery procedures, automated backups with point-in-time recovery
• Built HIPAA compliance into every layer: PHI encryption (AES-256), access controls, audit trails, disaster recovery, data retention policies, and incident response procedures passing SOC2 Type II and ISO 27001 audits
• Developed mission-critical features for hospital workflows: offline-first mobile architecture for unreliable hospital networks, real-time data sync, patient data management, reporting dashboards, and administrative tools

Domain: Healthcare SaaS | Compliance: FDA, HIPAA, SOC2, ISO 27001 | Scale: 100+ organizations, 99.9% uptime, zero security incidents | Markets: US, India

Built GDPR-compliant mobile healthcare applications for European and US markets. Designed and implemented multi-tenant SaaS architecture serving multiple healthcare organizations on shared codebase with complete data isolation. Full-stack development (React Native mobile, Ruby on Rails backend, PostgreSQL, AWS) with emphasis on privacy, internationalization, and white-label customization.

• Architected multi-tenant SaaS platform: complete data isolation between organizations, white-label customization through admin dashboards (logos, colors, features), zero-code configuration for new clients reducing onboarding from weeks to hours
• Implemented GDPR compliance controls: data encryption at rest and in transit, user consent management, right-to-be-forgotten workflows, data portability (export user data), privacy-by-design architecture passing European regulatory requirements
• Built internationalization (i18n) framework supporting 10+ languages for European markets: English, German, French, Spanish, Italian, with right-to-left (RTL) support for Arabic, dynamic content translation, locale-specific date/time/currency formatting
• Led full product development lifecycle: requirements gathering with European healthcare clients, technical architecture design, React Native mobile development, Ruby on Rails API backend, PostgreSQL database design, AWS deployment, production monitoring

Domain: Healthcare SaaS | Compliance: GDPR | Architecture: Multi-tenant, white-label, internationalized | Markets: Europe (Germany, France, Spain, Italy), US