e2ecore designs, builds, and operates the digital systems behind ambitious products in education, healthcare, finance, retail, logistics, and mobile messaging. We work as an extension of your team — not a vendor on the other side of a contract.
They are the most rigorous engineering partner we have worked with. They write less code, ship faster, and tell us when we're wrong.
We organize around how modern software is actually built — not around resume keywords. Most engagements draw from two or three practices working in concert under a single architect lead.
Custom software development →We architect and build scalable platforms that become the foundation of your digital business — microservices, APIs, event-driven systems, and high-throughput infrastructure built to handle production workloads at scale.
Research-driven interfaces that users love. We prototype, test, iterate, and deliver design systems that scale across your entire product suite — turning complex enterprise workflows into measurably better user outcomes.
Infrastructure as code, multi-region deployments, observability stacks, and SRE practices that move teams from heroics to sustained reliability. From startup to enterprise scale.
Production-ready data pipelines, warehouses, and machine learning systems — including LLM integrations that solve actual business problems, not demos.
Mobile apps built with a single codebase that runs on both iOS and Android. Performance-obsessed, pixel-perfect, fully accessible — with a 100% native feel.
From LLM integration to custom ML models to RPA — we help you leverage AI where it drives real business value, not where it makes for a good demo.
These are products we built end-to-end — from initial discovery through production launch and ongoing operation. We don't list every project; we list the ones our clients let us talk about.
The way a firm works matters more than what it claims to do. These are the operating principles our clients hold us to.
Most engagements begin with a fixed-scope discovery and a fixed-price implementation phase. We tell you what something will cost before we start — and we hold the line.
We don't operate offshore delivery centers behind project managers. The architects writing your code attend your standups, join your Slack, and own the outcome.
We write less code, not more. Every line is a future maintenance cost. Architecture decisions prioritize what your team will own three years from now over what feels clever today.
If we don't think a project will succeed, we'll tell you before signing. If a feature won't move the metric, we'll push back. We're not trying to maximize the contract — we're trying to be the firm you call back.
e2ecore was founded by senior engineers who got tired of the traditional consulting playbook — slide decks instead of working software, junior pyramids hidden behind partner names, and engagements optimized for billing rather than outcomes.
We built the opposite. A senior-led firm of 15 software architects — each with 16+ years of hands-on experience across distinct specializations. The architects writing your code are the same ones who showed up to the discovery meeting. Engagements committed to outcomes, not billable hours.
Founded in 2019, we operate from Decatur, Georgia and Mexico with remote teams across the Americas. We're deliberately not the largest firm — and we intend to remain that way.
Alfonso Laureano Tolentino is the founder and principal architect of e2ecore. With over 16 years of hands-on engineering experience, he has designed and delivered production systems across FinTech, EdTech, Health, and Logistics — from early-stage startups to enterprise platforms. He founded e2ecore in 2019 with a single conviction: great software requires senior people doing the actual work, not managing it from a distance.
Straight answers about how we work, who we work with, and what to expect when you hire a senior software engineering team.
We design and build production software end-to-end: platform engineering, full-stack web applications, mobile apps, cloud infrastructure, data pipelines, and AI integrations. Most engagements combine two or three of these under a single senior architect lead.
Both. We partner with ambitious startups building their core product and with established companies modernizing critical systems. What matters is that technology is central to the business — not the size of the org chart.
We are a senior-led engineering firm, not a body shop. The architects in your discovery call write your code, join your standups, and commit to outcomes — not billable hours. No junior pyramids hidden behind partner names.
Our headquarters are in Decatur, Georgia (USA) and Mexico, with senior engineers distributed across North and Latin America. We work remotely with clients throughout the Americas in English and Spanish.
Send us a message through the contact form describing what you need to build, modernize, or rescue. A senior architect — not a salesperson — will reply within one business day with an honest assessment of fit and next steps.
Tell us about the system you need to build, modernize, or rescue. A senior architect — not a salesperson — will reply within one business day with an honest assessment of fit.
Last updated: May 25, 2026
Last updated: May 25, 2026