Alan Staub Negro

Experience

• 

  Debos

  Smart-building SaaS · Full-Stack Engineer

  Employee · 10/24 - 08/26

  Stack

  • React 19
  • Next.js
  • TypeScript
  • .NET
  • PostgreSQL
  • Playwright
  • Sentry
  • Claude Code / MCP

  What I did

  • Owned frontend delivery; sustained it solo for ~8 months (3 large features to production, zero critical reverts)
  • Took over the tech department's delivery coordination — deadlines, unblocking, comms — a function the CTO handed over; the team's delivery benchmark
  • Built 6+ product modules end to end + a full-stack device search (React UI + .NET endpoint + PostgreSQL trigram indexes)
  • Cross-cutting architectural refactors adopted as team conventions; built the design system and type-safe i18n across the app
  • Built the end-to-end test suite (Playwright) from a dormant setup; added feature flags (Amplitude) + observability (Sentry)

  Highlights

  • Authored the team's AI-engineering conventions (CLAUDE.md + versioned code-review skills)
  • AI-augmented workflow: Claude Code, LLM agents, MCP
• 

  Nivimu

  HR PWA startup · Frontend Developer

  Employee · 04/23 - 04/24

  Stack

  • React
  • TypeScript
  • Ant Design
  • Emotion
  • Redux
  • Redux Saga
  • TanStack Query
  • Bit
  • Mockoon
  • Sentry

  What I did

  • Owned features end to end with high individual responsibility — code review, branch self-approval, UX QA
  • Led the JavaScript → TypeScript migration across a large-scale HR PWA
  • Built an internal component library, design system and micro-frontends (Bit)
  • Handled time-zone-correct scheduling across the product
• 

  Memorízame

  Spaced-repetition study app · Full-stack · design

  Freelancer · 12/22 - 04/23

  Stack

  • Svelte
  • TypeScript
  • Supabase
  • PostgreSQL
  • Figma
  • Miro

  What I did

  • Sole front-end developer; designed the product end to end — brand and logo, design system, UI/UX and layout
  • Owned the Svelte front-end architecture; collaborated on the Supabase back-end (PostgreSQL)
  • Built the SuperMemo spaced-repetition study flow
• 

  Íntegro

  Startup · Full stack

  Freelancer · 02/22 - 04/23

  Sole developer and technical analyst for a startup — company site end to end, design system and branding.

  Qwik · TypeScript · Figma

• 

  Attlos

  Startup · Front End

  Intern · 12/21 - 07/22

  First professional TypeScript/React role — built product features in an Agile/Scrum team.

  TypeScript · React · Redux · Azure

Trials

Company technical tests under a deadline — how I approach an unfamiliar problem, and the verdict each one earned.

• Debos — Live problem-solving interview

  October 2024

  Hired on the spot

  Two-part technical interview; the real test was a design problem — a search box hitting a backend with highly variable latency: how do you handle it? My answer, three layers: a minimum query length, a 200–500 ms debounce, and an AbortController cancelling the in-flight request so a slower earlier response can't overwrite a newer one — the classic typeahead race condition. Hired on the spot; joined as an external consultant, then moved in-house. I later shipped exactly this in production — a full-stack device search (React + .NET + PostgreSQL trigram indexes).

• Nivimu — Code Test

  From 20 to 21 March 2023 · 1 day

  Hired

  Filterable, sortable user-data table with a live summary card that re-syncs to the top row as sorting and filtering change. React + TypeScript + Redux Toolkit + Ant Design — delivered in a single day.

• Logitravel — PrimeIT Technical Proof

  From 1 to 4 July 2022 · 3 days

  Best technical candidate

  Text-list manager with add / select / delete and full undo–redo. React + Redux Toolkit + styled-components, a centralized design-token system and SOLID structure — built in a 3-day proof.

Artifacts

Self-directed and open source — the proof behind the labels, not the labels themselves. One makes an AI produce correct code; the other is a product I designed and built end to end.

Open source · MCP · evals

Gotcha

An AI-native engineering harness — and the catalog of subtle bugs that compile, pass review, and ship anyway.

The gap that matters isn't using an LLM to type faster — it's engineering the system that makes it produce correct code in a domain full of traps. Gotcha is that system: a defect catalog, versioned review skills, an MCP server that hands those rules to an agent while it writes, and an eval suite that measures whether the AI trips each trap.

• 16-defect catalog
• MCP server · 5 agent tools
• Evals 11/16 · recall & precision 11/11
• .NET · PostgreSQL · Next.js / React 19

Design engineering · open source

Memorízame

A spaced-repetition study app I designed and built end to end — brand, design system and interface, grounded in the science of learning.

The product I did this design work in is private, so I rebuilt it as an open, installable demo you can actually use — seeded with public-domain content. Every surface is mine: the two-tone logo, a tokenised light/dark design system (WCAG-AA / APCA-checked colour, three typefaces chosen for reading science), a trilingual UI and a real SM-2 scheduler. Held to the same senior bar as the rest — a design-token contract test and an axe-core accessibility gate fail the build on any regression.

• Design system · tokens
• SM-2 · offline PWA
• WCAG 2.2 AA · APCA colour
• Trilingual · light/dark
• SvelteKit 2 · Svelte 5