Proven results

Case studies

Deep dives into production systems Greelow has built. Architecture, decisions, results — the full field report on each engagement.

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A private-markets firm

How we built an agentic operating system for a private-markets firm

A field report on multi-channel agents, per-user credential isolation, and the discipline behind a working agentic system in regulated finance.

Javier Holcman12 min read
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Greenpeace

Mobile App for Supporter Engagement

Shipped the Greenpeace supporter app that lifted engagement 25% and boosted donor acquisition — MERN stack, 15 months, four-person squad.

Javier Holcman4 min read
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Chopra Foundation

Meditation & Wellbeing App

Built the Chopra mobile app end-to-end — meditation library, self-care tools, and expert-led content — with a multi-disciplinary squad over 18 months.

Javier Holcman4 min read
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OneReach.ai

Enterprise Conversational AI Platform

Embedded a dedicated team inside a conversational-AI platform that shipped NLP pipelines, IVR systems, and LLM integrations end to end.

Javier Holcman5 min read
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Romvo

Enterprise Collaboration Platform Revitalization

Rescued and rebuilt Romvo's enterprise social-network product with a distributed squad: performance, stability, and new business surfaces.

Javier Holcman4 min read
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Contabilium

Mobile App for a Top-3 Accounting Platform

Built Contabilium's sales-facing mobile app — order taking, sales workflow, stock management — from spec to production in four months.

Javier Holcman3 min read
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Bineo

How we shipped the Bineo neobank app for Banorte

Designed, built, and delivered Bineo's mobile banking app for Grupo Financiero Banorte — full retail scope, first-party design system, and delivery discipline built for scale.

Javier Holcman5 min read