Natan Loterio — Senior / Staff Android Engineer

What I do

I take systems shaped by someone else's constraints and put them back under the team's control. An Android app owned by an outside agency, brought in-house with a team built around it. A fifteen-minute pipeline cut to two and a half. A language model that only ran in someone else's cloud, running entirely on the phone instead.

The work is usually the same shape: find what the team doesn't actually own, and change that. Fifteen years of it, most of them on Android.

Selected work

HUGO BOSS — Tech Lead, Global Android Apps

2025–2026 · HUGO BOSS · 15 countries, 8 languages

Constraint: Move a live commerce app off an external agency without pausing delivery in fifteen markets.
Decision: Insource the codebase as it stood, build the internal Android team from zero, and write the conventions down so a new team could move without a senior engineer in every conversation.
Result: Development brought in-house, and the conventions defined for Android adopted across the whole mobile organization. Release cycle from 45 days to 15, crash-free sessions from 94% to 99.95%, app size from 230 MB to 65.

Read the HUGO BOSS case study · App

FARFETCH — Android Engineer

2021–2025 · luxury fashion marketplace

Constraint: Modernize a production e-commerce app incrementally, with old and new patterns alive in the same codebase.
Decision: Jetpack Compose adopted screen by screen behind the existing navigation, inversion of control through dependency injection, and the build modularized so Gradle's build cache and configuration cache could turn most CI runs into partial builds.
Result: Pipeline from 15 minutes to 2.5. Compose and DI became the default for new work.

Read the FARFETCH case study · App

Pitaia — CTO

2026–present · AI-native commerce

Constraint: Build a commerce platform where an autonomous agent, not a dashboard, is the product.
Decision: A 26-tool MCP layer exposing the whole product to language models, so the platform is fully operable by an agent.
Result: Blank repo to live stores with paying customers in under six months, including the first Instagram DM agent in the Brazilian market to close checkout — conversation to Pix or instalments — without the customer leaving the DM.

pitaia.me

Built in public

Brownie — on-device AI assistant for Android

Kotlin · Jetpack Compose · LiteRT-LM · open source

Constraint: A capable tool-calling agent inside a phone's memory budget, with no cloud and no API key.
Decision: Gemma 4 E2B through LiteRT-LM with quantization chosen at runtime from device RAM, split across five Gradle modules so the inference layer can be swapped when the next on-device model lands.
Result: 120 Kotlin files across five modules, multi-turn tool calling, persistent memory, MCP client. Nothing leaves the device.

Read the Brownie case study · Source

LiveFolders — a virtual filesystem alternative to MCP: tools reach language models through file I/O.Rust
scene-memory — versioned-slot memory for conversational agents; scored 477/500 on LongMemEval.Python
agent-team — a plugin that splits work across parallel coding agents and reviews their pull requests.JavaScript
claude-code-employee-grade-skills — skills extracted from Claude Code.
ArchitectTools — IntelliJ plugin for architecture work.Kotlin

Writing

Why we stopped fighting our tools June 2026
On adopting a tool that bends to how a team already works, instead of the other way round.

Track record

2026–presentCTO — Pitaia, Lisbon
2025–2026Tech Lead, Global Android Apps — HUGO BOSS, Lisbon
2022–2026LLM Engineer — GaiaHub, Lisbon (alongside FARFETCH) · started before ChatGPT shipped
2021–2025Android Engineer — FARFETCH, Lisbon
2020–2021Android Developer — Brelo, Florianópolis
2019–2020Android Developer — Facio, São Paulo
2018–2019Architecture Analyst — Cecred, Blumenau · helped save up to R$5M
2017–2018Senior Android Developer — HBSIS, Blumenau
2014–2016Senior Android Developer — ATAR and Morphy Digital Group
2012–2014Android Developer — Microton Tecnologia, Blumenau
2008–2011Delphi and ERP development

BSc Computer Science, FURB — Universidade de Blumenau.