Radu Luncasu Vault Boy

Radu Luncasu

STATUS: ACTIVE | Foundation Engineer | Building the Core Infrastructure, Platforms & Developer Tooling That Teams Ship On

LOC: Bucharest, Romania

radu.luncasu@gmail.com

+40723139678

> PERSONAL SUMMARY

Foundation engineer with 16+ years building the core systems, platform infrastructure, and developer tooling that product teams depend on. I design and ship the foundational layers—APIs, data pipelines, deployment platforms, SDKs, and shared services—so that every team above me can move faster and break less. My work sits at the intersection of system architecture and developer experience: I’ve built SaaS platforms from zero, designed multi-tenant infrastructure serving 80+ venues, created application development kits used by entire engineering orgs, and integrated AI tooling into development workflows before it was mainstream. I care deeply about reliability, clean abstractions, and making complex systems feel simple to the people who build on top of them.

> EXPERIENCE LOG

Foundation Engineer / Software Architect @ Rockhopper Inc.

DATE: 10/2022 - Present

  • - Architected the core platform for spreadsheet reviews, version control, and change tracking—designing the foundational data model, diffing engine, and API layer from scratch.
  • - Built the infrastructure and CI/CD pipelines that took the product from prototype to Microsoft AppSource store.
  • - Selected for TechStars 2023 Summer Class—one of the few apps chosen out of thousands of applicants.
  • - Integrated local LLMs into the platform’s core pipeline, fine-tuning open-source models to optimize performance while keeping data on-premise for privacy compliance.

Platform Engineer / Technical Lead @ Telepat.io

DATE: 04/2017 - 10/2022

  • - Designed and built the shared backend infrastructure, API gateway, and service architecture powering Walzay.com (IT talent sourcing), Prosign (legal contract management for sports), and Bedly.com (long-term housing in Boston & NYC).
  • - Created reusable backend modules and deployment templates that reduced new project bootstrap time by 60%.
  • - Built the data layer, multi-tenant database schemas, and reporting infrastructure across three concurrent product lines.

Infrastructure & Platform Engineer @ Multipliciti

DATE: 07/2021 - 08/2022

  • - Designed the foundational platform architecture for a construction materials marketplace—API design, database schema, containerized services, and cloud infrastructure on AWS.
  • - Established the CI/CD pipeline, Docker-based local development environment, and deployment workflow using NestJS, PostgreSQL, and AWS services.

Solutions Architect / Platform Lead @ Atta Systems (formerly AB4 Systems)

DATE: 11/2019 - 08/2022

  • - Architected the end-to-end platform for Hamangiu (legal publishing)—subscription system, content delivery pipeline, full-text search via Elasticsearch, and async processing with RabbitMQ.
  • - Designed the shared backend services, authentication layer, and API contracts consumed by multiple frontend and mobile clients.
  • - Built foundational infrastructure supporting React web and React Native mobile apps across multiple product lines (Yepp, Urban Air).

Senior Developer / Technical Lead @ DirectVision

DATE: 03/2011 - 02/2014

  • - Designed and built a multi-tenant SaaS platform for congress and event management—covering participant registration, scheduling, collaboration, and content delivery.
  • - Architected the system to support web apps, native Android/iOS apps, Flash kiosks, and data import pipelines from a single shared foundation.
  • - Platform scaled to 80+ congress venues across 2013–2014, serving as the foundational infrastructure for the company’s entire product line.
  • - Optimized core database performance on MS-SQL (2005/2008/2012) and provided consulting on database architecture and query optimization.

Platform Engineer / SDK Developer @ MedicaSoft LLC.

DATE: 09/2014 - 04/2017

  • - Contributed to the VA Enterprise Health Management Platform (eHMP)—a foundational healthcare system serving the US Department of Veterans Affairs.
  • - Built and maintained the Application Development Kit (ADK)—an internal SDK enabling UI developers across the org to build consistent, compliant components with Marionette/Backbone.
  • - Developed core REST services using the Resource Development Kit (RDK) on Node.js/Express, establishing API patterns and middleware consumed by the entire platform.
  • - Focused on foundational concerns: JavaScript prototyping patterns, async error handling, promise chains, and shared utility libraries used org-wide.

Infrastructure & IT Systems Engineer @ Pcone Trading

DATE: 01/2005 - 02/2008

  • - Built and maintained IT infrastructure for small and medium businesses—servers, networks, firewalls, routers, and switches.
  • - Designed and deployed on-premise server environments (Windows Server 2003, IIS, SQL Server, Exchange Server) as foundational business infrastructure.
  • - Provided end-to-end IT consulting covering hardware provisioning, network architecture, and system administration.