Yoandry Collazo Barroso

NDAX—Senior Software Developer

AI platform engineering for NDAX’s customer-facing LLM products. I own the architecture across the three services that make up the platform and review every change into them.

• Agent orchestrator — Built the service that turns a customer message into a grounded answer: intent routing, prompt assembly with few-shot selection, tool calling against internal APIs, streamed responses over WebSockets, session continuity and erasable user memory. TypeScript, Azure AI Foundry, Redis, Socket.IO.
• Guardrails — Designed the response-safety layer — a layered set of independent checks covering groundedness, structured-output validation with fallback, formatting integrity, provenance and compliance-sensitive content. Replaced embedding-similarity grounding with an entailment-based LLM judge after demonstrating that similarity both false-blocked safe replies and passed answers the corpus did not support.
• Eval harness — Built the in-repo evaluation framework — runner, assertion library, LLM judge, versioned baselines — so a prompt or model change is a measurable regression against a replayable suite rather than a hand assessment.
• AI gateway — NestJS service that is the single authenticated ingress for AI traffic and the only path to exchange internals, exposing the exchange’s internal APIs to agents as typed tools with generated parameter schemas, per-tool access control and full audit logging.
• MCP tooling — Model Context Protocol servers exposing OpenAPI specs and internal service operations as AI-queryable tools over STDIO and HTTP, so engineers and support staff can query production systems from any MCP client, under the same access controls as the underlying APIs.
• Chat surface — Preact/Vite chat widget compiled to a standalone CDN bundle, embeddable on any page, plus the assistant and marketing surfaces that consume it.
• Technical direction — Author the technical backlog, own the cross-service contracts — WebSocket events, HTTP headers, payload shapes, schema — and run code and security review for the engineers building on the platform.

Independent Contractor—Confidential client

Contract software engineering engagement. Client and scope are covered by a non-disclosure agreement.

Credit App—Senior Software Developer

Digital finance platform engineering.

Quantifi—Senior Software Developer

Backend platform engineering.

Front10—Lead Software Engineer

Full-stack Developer, Jan 2018 – 2019 · promoted to Lead 2019

Led the software development team, building aviation and e-commerce products for North American clients across a four-and-a-half-year tenure.

LUPO Barcelona—Full-stack Developer

Full-stack product development.

Dirección de Tecnologías y Sistemas (DTS)—Systems Engineer, Data Centres

Data-centre systems engineering: infrastructure build-out and operations across a four-year tenure.

Ingeniero en Ciencias Informáticas

Engineering in Informatics Sciences — Universidad de las Ciencias Informáticas (UCI).

Assessed by World Education Services (2023) as equivalent to a Canadian four-year Bachelor’s degree.

HCNA · HCNP—Huawei Certified Network Associate & Professional

Data-centre technologies track. Huawei University, Shenzhen. Since renamed HCIA · HCIP.