NEARSHORE SOFTWARE & AI FOR US STARTUPS
Senior software and AI engineering for US startups, on your timezone
Nerai Labs is a software and AI studio that builds custom SaaS, AI automation, RAG chatbots and AI agents for US startups. We work in your timezone from Latin America, in fluent English, with a senior team that ships to production. Our founder built systems at MercadoLibre, Pomelo and Rank Prompt, and that bar carries into every project. You get agency-level output without agency overhead, and rates that make sense next to a US shop.
Custom SaaS, built end to end
Web apps, dashboards, APIs and the cloud infrastructure under them. We take a problem from scoping to production and own every layer, so you ship a real product instead of a backlog of disconnected tickets.
AI automation and AI agents
We wire LLMs into the workflows your team actually runs: agents that take real actions, automations that remove manual steps, and pipelines that connect the tools you already pay for. Scoped to a measurable outcome, not a demo.
RAG chatbots grounded in your data
Internal copilots and customer-facing assistants that answer from your own documents with sources. Ingestion, retrieval, guardrails and evaluation are part of the build, so answers hold up in production instead of inventing.
Workflow automation and AEO
We kill repetitive work between systems with n8n, Make and custom code, built to be maintained. We also handle AEO, getting your brand cited inside ChatGPT, Gemini and Perplexity, drawing on our Rank Prompt experience.
Real timezone overlap with US teams
Latin America runs in and near US time zones, so we share most of your working day. Standups, reviews and same-day fixes happen during your hours. No 12-hour lag and no async-only relationship the way far-offshore teams force on you.
Fluent English and a senior team
We speak and write fluent English, so you explain a problem once and we run with it. You work with senior engineers, not a junior bench learning on your budget, which means fewer meetings to clarify the last meeting and faster decisions.
Agency quality, better economics
You get senior US-aligned engineering at rates well below a US agency, because you pay for builders instead of account managers and bench time. This is value, not a discount: nothing about the quality is cut to get there.
Questions
How is Nerai Labs different from a US agency or offshore dev shop?
With most agencies you hire a brand and get a rotating team you never chose, with account managers translating between you and the people writing code. We are a studio where you work directly with senior engineers who ship the work, accountable end to end. Versus far-offshore shops, we share your timezone and communicate in fluent English, so there are no overnight handoffs.
Do the timezones actually work for a US company?
Yes. Our team works from Latin America, which sits in and near US time zones. We overlap for most of the standard US workday, so you get same-day responses and live calls at normal hours for both sides, not the next-morning lag common with Asia-based teams.
What can you build for a startup?
Custom SaaS like web apps, dashboards and APIs, plus AI work: RAG chatbots, AI agents, AI automation and workflow automation across n8n, Make and custom pipelines. We also do AEO for AI search visibility. Most clients are founders and small teams who need senior engineering without hiring a full in-house team.
Who is on the team and what is the track record?
Nerai Labs is a studio. Our founder, Tomás Marengo, is a Founding Engineer at Rank Prompt and previously built systems at Pomelo, MercadoLibre and Mercado Pago, including Go microservices handling 50K+ daily executions, plus work with Scale AI. That production bar shapes how the whole team builds for US startups.
Is the price lower because the quality is lower?
No. The savings come from structure and location, not corners. You pay a senior studio team in Latin America instead of a US agency's overhead, account managers and bench, so the rate is well below US agency pricing while the engineering stays senior-level and ships to production.
