As many tech giants push for a return to in-person work, another quiet shift is underway. While U.S. companies reestablish office-based teams, they’re also increasingly hiring Latin American developers—particularly for tasks related to post-training large language models (LLMs). Revelo, a leading full-stack platform that connects U.S. companies with vetted developers in Latin America, has seen a sharp rise in demand for engineers skilled in post-training LLM support.
According to CEO and co-founder Lucas Mendes, this surge reflects a broader trend in AI development: a growing need for expert human data that can help LLMs perform high-value, domain-specific tasks more efficiently.
“There’s a race for data—especially expert human data—that helps LLMs excel at specific tasks,” Mendes said. “Coding is one of those tasks.”
Revelo’s platform boasts over 400,000 vetted developers, streamlining hiring and payment logistics for U.S. clients. In 2024, 22% of the company’s revenue came directly from LLM-related hires—a significant shift highlighting the rise of AI-assisted development.
Post-Training AI Work Fuels Developer Demand
The explosion of foundational AI models in 2023 has fueled demand for developers who can assist in refining LLMs after training. This “post-training” phase requires professionals with deep coding expertise, often in specific languages or frameworks. These engineers help fill gaps where AI struggles to generate accurate or optimal code without human guidance.
Revelo’s clients now include top-tier U.S. enterprises like Intuit, Oracle, and Dell, as well as nearly every major hyperscale AI provider. These companies rely on Revelo to deliver engineers who not only know how to code, but who can also enhance the performance of AI models through expert feedback and real-world data.
“The demand typically looks like this: a company is already training an AI model and needs developers with specific skill sets to guide it,” Mendes explained.
What makes Latin American talent particularly attractive for U.S. firms is the combination of skill, cost-effectiveness, and time zone alignment. Unlike offshore teams in Asia or Eastern Europe, Latin American developers can collaborate with U.S.-based teams in real-time, eliminating delays and miscommunication. Mendes refers to this advantage as “nearshoring” rather than offshoring.
Revelo’s Growth Mirrors Remote Work Evolution
Revelo launched in late 2014, co-founded by Mendes and Lachlan de Crespigny, during a time when the tech industry was locked in a “war for talent.” Their vision was clear: build a network of vetted Brazilian developers to meet growing U.S. demand. The response was overwhelmingly positive.
Over time, the company expanded beyond Brazil into wider Latin America, attracting over $48 million in venture funding from notable investors like Social Capital, FJ Labs, and Valor Capital Group.
The Covid-19 pandemic accelerated Revelo’s growth. As remote work became standard, U.S. firms started seeking talent across borders. Revelo became a go-to source.
“Companies would hire one or two Latin American engineers and quickly realize the quality was outstanding,” Mendes said. “Then they’d come back and say, ‘Where can I get more like them?’”
Even as the industry shifts back to office environments, demand for Revelo’s remote workforce hasn’t slowed. Mendes believes the appeal of Latin American talent remains strong because of the unique balance it offers: proximity, quality, and cost savings.
Despite industry trends, Mendes says Revelo continues to thrive. “I hate to go against the buzz,” he joked, “but demand hasn’t faded. If anything, it’s intensified.”
To meet growing demand, Revelo has also acquired five competitors in the past 30 months—including Alto and Paretisa in March 2025. These strategic moves solidify Revelo’s presence as the dominant force in Latin American tech hiring. “We’re building the global talent backbone for the AI age,” Mendes said. “And we’re not done. More acquisitions are coming.”
Revelo is proving that even as companies revisit their office culture, the need for flexible, global, and expert talent—especially for AI post-training development—is only growing. With its strong LatAm network, client list, and acquisition strategy, Revelo is positioned to lead the next wave of remote-first, AI-driven workforce solutions.
