Nicolás Franco Mainella,

Work

1. 

   Senior Full Stack Engineer – Frontend Oriented

   iSeatz (opens in a new tab) · Oct 2023 – Present

   Current JobRemote

   Led the architectural evolution from a legacy React SPA into a modern Next.js white-label monorepo adopted by multiple enterprise clients, aligning product, design, backend, QA and engineering across distributed Agile teams.

   • Architected a modern Next.js / TypeScript / SWR white-label monorepo foundation, reducing new Checkout calls by 30% and improving LCP by 50%.
   • Streamlined CI/CD and cloud delivery with Vercel, GitHub Actions, AWS and Nx, using S3 deploy locks, CodePipeline quality gates and distributed caching to skip up to 90% of unchanged builds and reduce review build times by 40–70%.
   • Strengthened product quality and reliability with Playwright, 155+ accessibility tests impacting 20+ components toward WCAG 2.1 compliance, and production observability through OpenTelemetry and SumoLogic.
   • Delivered core white-label capabilities across Contentful CMS, multi-locale i18n, LaunchDarkly, Patch Bay and enterprise payment/security flows, enabling PO self-service content updates and eliminating full-day engineering tickets.
   • Standardized UI quality with Storybook, Chromatic PR gates and 210+ Playwright E2E tests across 4 brand packages, reducing engineer onboarding by 2 days and accelerating white-label client setup.

   • React
   • Next.js
   • TypeScript
   • Nx
   • Vercel
   • GitHub
   • AWS
   • Playwright
   • Storybook
   • Contentful
2. 

   Software Engineer

   iSeatz (opens in a new tab) · Oct 2021 – Sep 2023

   Remote

   Managed the global Checkout experience for a travel and e-commerce SPA across flights, hotels and cars, partnering with product, design, backend and QA.

   • Improved Checkout performance with React, Redux and product-level lazy loading by line of business, reducing bundle size and cutting load time by up to 20% across high-impact SPA sections.
   • Standardized frontend and backend integration contracts with GraphQL, aligning queries, loading states, error handling and business rules, bringing nearly 67% of contracts into a consistent implementation model.
   • Reduced production bug detection time by 50% through stronger Jest validation, code reviews and release criteria, while reinforcing secure handling of PII across logs, local persistence and transactional states.

   • React
   • Redux
   • TypeScript
   • GraphQL
   • Jest
   • JavaScript
   • Node.js
3. 

   Frontend Engineer

   iSeatz (opens in a new tab) · Jun 2019 – Sep 2021

   Remote

   Built reusable UI components and frontend features for a complex enterprise travel platform, supporting evolving brand standards and shared component patterns.

   • Developed reusable frontend components and features across 3 lines of business — flights, hotels and cars — supporting a complex Checkout experience with up to 3 flight steps, 3 hotel payment models and 6+ feature flag variants.
   • Implemented dozens of reusable UI components within a 130+ component catalog, aligning 35+ configurable UI blocks with evolving brand tokens.
   • Improved frontend efficiency with React, Redux and component-level lazy loading, reducing client-side code by more than 20% and increasing modularization from 7 to 21 code modules.

   • React
   • Redux
   • JavaScript
   • TypeScript
   • Jest
4. 

   Full Stack Developer

   DonWeb (opens in a new tab) · Mar 2017 – Sep 2019

   Developed commercial and internal platforms with sales, billing, support and technical teams, covering payment, domain sales, customer service and administration workflows.

   • Integrated 8 international and local payment methods using AngularJS, JavaScript, Node.js and external APIs, expanding payment coverage by 20% and unifying billing logic.
   • Built payment and billing features for the global Payment Page and Payment Report with AngularJS, Node.js, AWS and CI/CD practices, reducing payment linking and reconciliation errors reported by customers by 30%.

   • Angular
   • JavaScript
   • Node.js
   • AWS

Education

1. 

   Bachelor's Degree, Systems Engineering

   Universidad Abierta Interamericana (opens in a new tab)

   Computer Systems and Information Technology · Rosario, Argentina · Mar 2014 – Dec 2018

   Completed

   Completed a Systems Engineering degree focused on software development, databases, and information systems architecture, with coursework in object-oriented programming, system analysis, and project management.

2. 

   Systems Analyst Degree

   Universidad Nacional de Rosario (opens in a new tab)

   Information Systems and Business Analysis · Rosario, Argentina · Mar 2010 – Dec 2015

   Not Completed

   Studied systems analysis, business process modeling, requirements engineering, and information system design. Program not completed — transitioned into professional software development.

Interview