About Greelow
A team. Not a scale pitch.
Greelow is a nearshore software development agency, founded in 2017 in Buenos Aires with a US LLC in Miami since 2020. We work with US and Canadian teams on staff augmentation, and with LATAM enterprises, PyMEs, and founders on full-cycle software - MVPs, agentic systems, modernization, and e-commerce.
ISO 9001
5.0 on ClutchOur story
How we got here
We started in Buenos Aires in 2017 as a small engineering operation. In the early years we worked with Argentine and Latin-American startups on MVPs, first production versions, and the iteration cycle after that. Most of the original team is still with us today.
In 2020 we formed the US LLC in Miami and began serving US clients through staff augmentation. That is now one of three pillars of the company. The other two: a software factory for LATAM PyMEs and regional corporates, and agentic consulting for clients who need AI in production with the compliance conversation resolved first.
In 2024 we formally pivoted toward agentic. Our reference case - a multi-tenant agentic operating system we shipped for a private-markets firm, in production for three quarters at time of writing - is the architectural reference we use with every subsequent enterprise engagement.
Leadership
The team you meet on the first call
Javier Holcman
CEO & Co-founder · Fractional CTO
10+ years leading software teams. Co-founded Greelow in 2017. Fractional CTO for several LATAM startups and corporates. First call on every new engagement.
LinkedIn →
Leo Holcman
Co-founder & Engineering Manager
Mobile & full-stack expert. Led delivery of 100+ products across fintech, healthcare, and consumer apps. The human knowledge base of Greelow.
LinkedIn →
Nicolás Middi
Chief AI Officer
AI/ML architect driving AI-native workflows. Architect on our agentic operating system for a private-markets firm - three quarters in production. Technical lead on our largest enterprise accounts.
LinkedIn →
Andrea Janna
Head of HR
Manages talent acquisition and retention across the 40-person distributed team. Built the vetting process that keeps only the top 3%.
LinkedIn →
Romina Komarovsky
Head of Finance
Oversees contracts, payroll, and compliance across US and LATAM operations. One invoice, zero surprises.
LinkedIn →Where we are
Offices
Operational HQ
Buenos Aires
Av. Corrientes 3360, CABA, Argentina
US LLC
Miami
18246 Collins Avenue, Sunny Isles Beach, FL 33160, USA
Greelow in Numbers
2017
Founded
100+
Products Delivered
98%
Client Retention
3+
Years Avg Partnership
Common questions
- Greelow operates from Buenos Aires, Argentina, where the engineering and delivery team works. The company has a US legal entity - Greelow LLC - registered in Florida, which is the entity US clients sign and pay against. The engineering team operates on US business hours, with Buenos Aires 1-2 hours from US Eastern, with full working-day overlap.
- Greelow was founded in 2017 by Javier and Leo Holcman, two brothers with a combined two decades of experience leading software teams. Javier serves as CEO and Co-founder; Leo as Co-founder and Engineering Manager. Both are still active in the company, sitting in on the kickoff of every new client engagement.
- Greelow is a legitimate, registered software development agency. The company operates through Greelow LLC, registered in Florida, and is ISO 9001:2015 certified. Clients include named enterprises with published references. Public engagements have shipped for Deepak Chopra, McDonald’s (Arcos Dorados), OneReach.ai, and others.
- Yes - Greelow LLC is registered in Florida (EIN 84-4474103). US clients sign contracts and receive invoices from the US entity, which removes the compliance, tax, and procurement friction that often comes with hiring software vendors offshore. Engineering and delivery happen from Buenos Aires; contracting and billing happen in the US.
- Approximately 40 people across staff and long-term contractors. The breakdown is roughly 25 engineers spanning frontend, mobile, backend, AI/ML, and DevOps; a small design and product team; three to four QA and operations people; and a five-person leadership team. Small enough that the founders sit in on every kickoff, large enough to staff dedicated teams.
- Currently active: ISO 9001:2015 certified (quality management). Individual engineers we place have worked under HIPAA and PCI-regulated systems within their clients’ compliance envelopes.
- Nearshore development means contracting engineers who work in the same or adjacent time zone as your team, in a different country. For US teams, nearshore means Latin America. Timezone overlap with US business hours is the defining advantage over offshore (India, Eastern Europe - 8 to 12 hours off) at 40–65% of the cost of a US onshore hire. See the full nearshore development guide for the deep answer.
- Three passes: technical depth (live interview conducted in English on a real system the candidate built), communication (written and verbal fluency plus decision-making mechanics), and cultural fit for US remote work (autonomy, responsibility, collaboration). Roughly 30% of technically-qualified candidates fail one of the two non-technical passes. Every engineer we place has shipped production code with AI tools in daily workflow.