Freelancer profile translated to English.
Back to original languageAbout Cristian
Engineering Manager and product builder with over 12 years of experience building software: mobile, backend, architecture, and product.
Currently leading the Supply domain at Everli (European grocery e-commerce) with a multidisciplinary team of up to 8 people (Android, iOS, Backend, and Design). Recent impact: 70%+ reduction in purchase variance, 35%+ reduction in shopper picking time, and 99%+ invoice reconciliation accuracy in collaboration with the Data team.
As a freelancer, I build and operate Inversionidas (app.inversionidas.com), an investment management platform developed end-to-end using my own ecosystem of AI agents (implementation, multi-model code review, and testing) under my supervision — TypeScript, React, PostgreSQL, Supabase, Docker. I am also the Android architect for Boreal, a live audio spaces app (LiveKit, WebSockets, real-time moderation).
What I can bring to your project: technical leadership or team management (fractional EM / Tech Lead), mobile and full-stack architecture, and practical adoption of AI in the development process (agents, automation, assisted review).
Registered freelancer with intra-EU VAT. Immediate availability, remote (CET) or in-person in Bilbao.
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Everli S.p.AEngineering Manager (formerly Tech Lead and Android Architect)E-COMMERCESeptember 2020 - Today (5 years and 10 months)I lead the Supply domain with a multidisciplinary team of up to 8 people (Android, iOS, Backend, and Design): fulfillment, shopper operations, replacements, checkout, and delivery in several European markets. Internal progression: Android Architect (2020) → Technical Lead (2022) → Engineering Manager (2024).Impact:70%+ reduction in purchase variance**, **35%+ reduction in picking time**, and **99%+ invoice reconciliationin collaboration with the Data team. Domain hiring: over 25 interviews and technical test design. Scrum and Kanban according to team scale, with Clean Architecture, SOLID, testing, and CI/CD. Hands-on in PHP/TypeScript backend when the team needs it.
- InversionidasFounder & Software EngineerBANKING AND INSURANCEOctober 2025 - Today (10 months)Bilbao, SpainInvestment management platform (app.inversionidas.com) that centralizes portfolios, transactions, asset allocation, performance against benchmark, dividends, and crypto wallets. Product **built and operated entirely by me**, from definition to production: UX, React/TypeScript frontend, backend, PostgreSQL data model (Supabase), Docker, deployment, and monitoring.The differentiating factor is how it's developed: throughmy own ecosystem of AI agents— implementation from issues, code review with three different models, testing, and security audits — under my supervision, orchestrated via Telegram and integrated with GitHub in isolated execution environments.An ideal reference project if you're looking for: full-stack development with TypeScript/React, fintech domain, or practical adoption of AI in your development process.
- BorealAndroid Architect (freelance)CULTURESeptember 2024 - Today (1 year and 11 months)Bilbao, SpainArchitecture and development of the Android client for Boreal, an app forlive audio spacesfor structured and moderated discussions (available on Google Play).The technical challenge lies in the real-time layer: live audio rooms built onLiveKit**, state synchronization via **WebSocketsfor moderation flows — speaking turns, intervention requests, speaker management — and REST APIs, defining communication protocols in close collaboration with the backend team.In production and actively evolving project. Ideal reference if your project requires real-time audio/video, WebSockets, or modern Android architecture in Kotlin.
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Education
- Master's Degree in Software Engineering and Computer SystemsUniversidad Internacional de La Rioja2017
- Bachelor of Science (Honours) in ComputingUniversity of Wales2014