Sam Asher

Senior Full-Stack Engineer with 6+ years of experience building scalable, cloud-native SaaS platforms for the EU market. Specializes in the MERN stack and Next.js with TypeScript, alongside robust Python backend services (FastAPI, Django). Proven track record of architecting high-performance, GDPR-compliant SaaS solutions with deep domain expertise in Healthcare Technology and Financial Markets.

Adept at integrating advanced LLM features into secure web products to automate complex medical document processing and financial reporting workflows. Experienced technical lead driving end-to-end AWS lifecycles, distributed agile teams, and multi-tenant architectures that scale business growth.

Senior Full-Stack Engineer - Eco Green

(2023-07)

• Spearheaded full-stack architecture and engineering for enterprise SaaS platforms using React, Next.js, TypeScript, and Node.js, establishing core data models and service boundaries for healthcare and financial applications.
• Engineered 3 Node.js microservices for asynchronous data and media processing on AWS SQS, EventBridge, and Lambda, adding retry mechanisms that reduced processing failures by 40%.
• Implemented real-time job tracking and status updates via WebSockets and GraphQL with state storage in DynamoDB and Redis, eliminating continuous polling and cutting API load by 30%.
• Integrated advanced LLM capabilities using Amazon Bedrock, LangChain, embeddings, and pgvector to automate processing of financial records and healthcare documents, improving answer relevance by 25% and reducing request costs by 20%.
• Optimized high-throughput React and Next.js user interfaces with Redux and Tailwind CSS, accelerating dashboard rendering speed and improving overall page load times by 30%.
• Developed high-performance Python microservices using FastAPI and Django to handle complex LLM vector retrieval and backend data processing exposed to core Node.js APIs.
• Standardized infrastructure across 4 environments using Docker, Terraform, and CI/CD automation with Jest and Cypress integration, successfully cutting deployment times by 50%.
• Mentored engineering team members through structured code reviews, system design workshops, and compliance-driven development practices.

Full-Stack Engineer - RocaSalvatella

(2020-11 - 2023-06)

• Architected 4 core procurement and financial workflow APIs in Node.js and Express, implementing OAuth 2.0/OIDC authentication and strict role-based access controls.
• Optimized MongoDB and PostgreSQL database schemas and query indexes while implementing Redis caching strategies, reducing report generation times by 50% and key API response times by 40%.
• Offloaded heavy financial analytical calculations and data export jobs to Celery background workers, ensuring primary API response times stayed fast and smooth during peak EU market hours.
• Delivered interactive analytical dashboards using React, Angular, and reusable Vue.js components for financial sourcing search, increasing approval process completion rates by 20%.
• Refactored 2 legacy PHP modules running on MySQL into modern Node.js services, which reduced customer support tickets by 30%.
• Built automated testing pipelines with Jest, Cypress, and Pytest integrated into AWS CI/CD workflows, lowering production bugs by 30%.
• Partnered with product owners and cross-functional teams to translate complex business requirements into technical deliverables aligned with Fintech and HealthTech standards.

Master's - Computer Science - Hochschule Osnabrück