Software Engineer

Sergio Vagni

10+ years building e-commerce platforms, GraphQL APIs, and cloud infrastructure on AWS. Currently at Neulabs, working on multi-brand architectures with Shopify, Sanity, Next.js, and Lambda.

Experience

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  Software Engineer & Tech Lead

  Neulabs

  Multi-brand e-commerce infrastructure: GraphQL BFF, Shopify theme monorepo, Algolia search, Amazon SP-API integration, AWS serverless pipelines.

  Sep 2022 → now

• 

  Software Engineer

  Lari Speech

  Frontend and backend development for speech technology products.

  Feb 2020 → Jun 2022

Education

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  Master's degree

  Computer and Automation Engineering

  Università Politecnica delle Marche

  2016 → 2019

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  Bachelor's degree

  Computer and Automation Engineering

  Università Politecnica delle Marche

  2012 → 2016

Publications

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  Voice Interaction with Artworks via Indoor Localization: A Vocal Museum

  AVR 2020 — International Conference on Augmented Reality, Virtual Reality and Computer Graphics

  Springer, Lecture Notes in Computer Science, vol. 12243

  2020

Selected work

• Sherpa — static analysis index for AI agents

  Pre-computed codebase index that replaces exploratory grep/file-read calls with a single manifest. Cuts AI token consumption by 60% on structural questions, with a TypeScript CLI that regenerates the index on demand.

  TypeScript AI tooling Static analysis Claude

• Multi-brand GraphQL BFF

  Unified Sanity CMS and Shopify Storefront into a single GraphQL endpoint via schema stitching. Custom executor for locale injection, DataLoader batching for N+1, Stellate edge cache with event-driven SQS invalidation — latency from 800ms to 20ms on cache hit.

  GraphQL AWS Lambda Sanity Shopify DynamoDB SQS TypeScript

• Algolia multi-locale search

  Search layer for a multi-brand catalog: per-product color variant explosion, hierarchical category facets built from Sanity parent references, color family mapping, one index per locale, brand-specific sort replicas.

  Algolia Sanity TypeScript Lambda

• Amazon SP-API integration

  Production integration across multiple EU seller accounts: three-tier auth (LWA + STS AssumeRole + SigV4), per-account token bucket rate limiting, Feeds API polling with GZIP report parsing, idempotent webhook subscriptions.

  Amazon SP-API AWS TypeScript SQS Lambda

• Shopify theme monorepo

  Shared Liquid component library across 8 brand stores using a custom Node.js sync layer. Single TOML config as source of truth, automated theme pull + commit pipeline, per-brand override support.

  Shopify Liquid Node.js GitHub Actions Monorepo