Open to opportunities

Lucas Peralta

@lucasperalta1

Message

Senior software engineer building secure, cloud-native full-stack systems with React, TypeScript, and Node.js.

Argentina

Message

What I'm looking for

I’m looking for a team where I can build secure, cloud-native products—owning React/TypeScript + Node.js delivery, CI/CD automation, and scalable data governance. I want async-first collaboration, strong code review culture, and real impact on performance and reliability.

I’m a Senior Software Engineer with 11+ years building cloud-native software in FinTech and data-driven domains. I focus on shipping end-to-end features with secure authentication, scalable RESTful APIs, and strong governance practices.

Most recently, I architected and shipped TypeScript + React SPA and Node.js/Express features in an Azure environment, improving feature delivery velocity by 35% and supporting 50K+ monthly users. I designed PostgreSQL schemas and migrations that improved API response times by 40%, and implemented OAuth2/JWT authentication with SSO and MFA to reduce unauthorized access incidents by 60% while aligning processes with SOC 2 controls.

I also built CI/CD pipelines with GitHub Actions and Docker containerized deployments, cutting release cycles from weekly to daily and achieving 99.9% uptime. In parallel, I mentored 4 engineers in AI-augmented workflows and code reviews, reducing technical debt by 25% and raising automated test coverage to 90% across TypeScript codebases.

Earlier, I scaled React single-page applications and full-stack systems for 20K+ users, optimizing databases with TypeORM and reducing query latency by 45%. Before that, I delivered FinTech capabilities for 1M+ users and high-volume transactions with PCI-DSS and KYC/AML compliance, strengthening JWT and role-based access control to improve PII protection and GDPR alignment—always paired with CI/CD, async-first collaboration, and performance tuning.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Kiggla

Oct 2024 - Present (1 year 6 months)

Architected and shipped end-to-end features across a React SPA and TypeScript Node.js/Express backend using TypeORM, increasing feature delivery velocity by 35% and supporting 50K+ monthly users. Improved PostgreSQL performance (40% faster APIs) and implemented OAuth2/JWT with SSO/MFA, reducing unauthorized access incidents by 60%.

React TypeScript Node Express PostgreSQL TypeORM OAUTH2 JWT Azure

Senior Full Stack Engineer

PuzzleHR

Aug 2021 - Sep 2024 (3 years 1 month)

Developed scalable React single-page applications with Tailwind CSS, TanStack, Jotai, and React Hook Form integrated with Node.js/Express RESTful APIs, improving user onboarding completion by 30% for 20K+ HR platform users. Built Azure Docker/GitHub Actions CI/CD pipelines (2 hours to 15 minutes deployments) and delivered OAuth2/JWT authentication with GDPR-aligned PII protection.

React Tailwind Tanstack Query Jotai React Hook Form Node Express PostgreSQL Azure OAUTH2

Full Stack Engineer

Nubank

Sep 2018 - May 2021 (2 years 8 months)

Built FinTech features with React and Node.js with PostgreSQL for 1M+ users, supporting PCI-DSS and KYC/AML compliance requirements. Optimized REST APIs and SQL (35% higher transaction throughput), implemented JWT-based RBAC for stronger PII protection, and containerized services with Docker and automated CI/CD to maintain 99.95% availability.

React Node PostgreSQL REST APIs JWT Role Based Access Control PCI DSS KYC AML Docker CI CD

Back End Developer

Accenture

Sep 2016 - Aug 2018 (1 year 11 months)

Designed and developed Node.js and Express RESTful APIs integrated with SQL Server and PostgreSQL databases, improving enterprise application performance by 30% across 10+ client projects. Implemented OAuth2/JWT solutions aligned to SOC 2 and GDPR, optimized database schemas/indexing to cut reporting query times by 50% for 5M+ record datasets, and improved CI/CD automation with Docker-based deploy

Node Express SQL Server PostgreSQL OAUTH2 JWT SOC GDPR Indexing CI CD

Front End Developer

Globant

Feb 2015 - Aug 2016 (1 year 6 months)

Developed responsive user interfaces using React and JavaScript, delivering SPA features that increased user engagement by 25% across enterprise web applications. Improved UI performance and cross-browser compatibility (35% faster load times) and integrated RESTful APIs with token-based authentication for secure PII transmission.

React JavaScript Responsive UI RESTful APIs Token Based Authentication Browser compatibility Agile Git