Co-founder & CEO of Calii - the Stanford-engineered, Y Combinator-backed platform quietly rebuilding how 600 million Latin Americans buy their groceries.
David Arrambide & Maurizio Caló, co-founders of Calii — TechCrunch / Calii
Two thousand orders. Every day. From a single city in northern Mexico. That was Calii in Monterrey before the Series A - before the expansion plans, before the $22.5 million check, before anyone outside Latin America paid much attention. David Arrambide was already deep in the work.
Arrambide is a co-founder and CEO of Calii, a full-stack grocery delivery platform he built with Stanford classmate Maurizio Caló Caligaris. The company entered Y Combinator's Winter 2019 batch and has since grown to 330+ employees, operating across multiple markets in Mexico. The model: bypass distributors, connect directly with producers, run your own micro-fulfillment centers, and get fresh produce to someone's door in under two hours at prices that match or beat Walmart.
That last part - the Walmart pricing - is not incidental. It is the thesis. Most Latin American grocery delivery startups tried to win on convenience for the affluent. Calii bets that the only way to move at scale in a $1 trillion market is to serve everyone.
"To truly crack the $1 trillion groceries market in LatAm, we understand that we cannot be a premium service."David Arrambide, co-founder & CEO - Calii
The path from Stanford's Bioengineering program to running a grocery logistics company in Monterrey is not an obvious one. Arrambide graduated from Stanford between 2008 and 2012, spent time on technology ventures in healthcare with a startup called Clinea, then turned his attention to a problem that lives at the intersection of broken infrastructure, inefficient middlemen, and a billion-dollar daily need.
Before Calii reached its first public funding milestone, the team spent their first two years exclusively in just two markets - refusing to expand until the unit economics and the user experience were locked. That deliberateness is baked into how the company operates.
The word "full-stack" gets used carelessly in startup pitches. At Calii, it means something specific: the company controls every node in the chain from producer to customer. No third-party warehouses. No wholesalers marking up tomatoes. No dark stores leasing space from someone else. Calii runs its own micro-fulfillment centers and uses demand-management algorithms to minimize overstock and spoilage.
"By cutting middlemen and reducing inefficiencies, we generate more profits for producers and pass on greater savings to our users."
The result is a food waste reduction of up to 3x compared to traditional supermarket supply chains - a number that matters both financially and as a competitive moat. Lower waste means better margins. Better margins mean competitive pricing. Competitive pricing means mass-market reach. And mass-market reach is the only path to winning in a market that serves hundreds of millions of people spread across cities, suburbs, and corridors that traditional grocery infrastructure has never served well.
The 5,000+ SKU catalog includes produce, meat, seafood, prepared items, and everyday packaged goods. Average order value exceeds $40 USD. The company grew revenue more than 300% in a twelve-month window. When the Series A closed in January 2022, Calii had a clear signal: the model was repeatable.
Calii's average order value exceeds $40 USD - at prices matching or beating Walmart, with delivery in under two hours and 3x less food waste than traditional supermarkets.
Latin America's grocery market sits at approximately $1 trillion annually. It is massive, fragmented, and largely unchanged by the logistics revolution that reshaped retail in the United States and Europe. Supply chains are long. Cold chains are unreliable. Middlemen stack margins at every step. Consumers, particularly outside Mexico City and Sao Paulo, have limited options and inconsistent access to fresh food.
Calii is not trying to be a faster version of existing grocery infrastructure. The bet Arrambide and Caló made is that connecting producers directly to consumers via owned fulfillment creates a structurally different cost and quality profile - not just an incremental improvement. The fact that the company launched in Monterrey, a large but non-obvious first market, signals that the strategy is about depth and replicability, not chasing the obvious headline cities first.
The expansion roadmap from the Series A called for 14+ cities across Mexico and multiple Latin American countries within six months of closing. A planned fintech feature - Calii Pay, a buy-now-pay-later product - pointed toward building financial infrastructure for the customer base, not just serving them groceries.
Calii's first 24 months were intentionally claustrophobic. Two markets. Same model. Iterated until the numbers were stable. It was the kind of patience that Silicon Valley playbooks rarely budget for, but that Latin American infrastructure demands.
Producers earn more. Consumers pay less. The supply chain generates less waste. All three at the same time. That compression - cost out, quality in, waste reduced - is what makes the model worth $35 million in bets from some of the most discerning investors in consumer and LatAm tech.
"Our products are priced at par or lower than traditional supermarkets, such as Walmart."
"By cutting middlemen and reducing inefficiencies, we generate more profits for producers and pass on greater savings to our users."
"To truly crack the $1 trillion groceries market in LatAm, we understand that we cannot be a premium service."
Calii operates its own micro-fulfillment centers rather than leasing dark store space from third parties. Control over the physical layer means control over speed, freshness, and cost.
Purchasing directly from farms and producers eliminates 2-3 layers of distribution markup. Producers earn more. Customers pay less. The math works because middlemen disappear.
Proprietary demand-management systems optimize inventory to minimize spoilage - reducing food waste up to 3x versus traditional grocery supply chains while improving freshness.
Calii's pitch to investors was not "we are faster than X" or "we have better UX than Y." It was structural: if you control the entire supply chain - producers, fulfillment, last-mile delivery, and eventually payments - you can price at mass-market levels, reduce waste, and scale without depending on any single third-party partner. The first two years in Monterrey were the proof of concept. The Series A was the signal that the proof held.
Arrambide, as CEO, is the operator behind that model. The role is not primarily a product or growth function - it is a logistics and systems engineering function dressed in startup clothes. Getting produce from a farm in Sinaloa to a doorstep in Monterrey in under two hours without marking up the price requires a different kind of obsession than building a consumer app.