Systems Engineer · Senior Mobile & Full Stack
Jersin Lazaro
CEO of JLS Software Solutions
I am CEO of JLS Software Solutions, a Systems Engineer, senior in native Android and Full Stack. If your business needs an app, a website, or a system that people actually use, not a prototype that never ships, I design it, build it, and publish it. I have spent 8+ years delivering production software for brands like Starbucks, BCP, Disney, ESPN, Unimarc, and Claro: from architecture to launch on Play Store, App Store, or the web, with the same bar as banking, retail, and telco. You bring the problem and I come back with a clear scope and software that already works.
A career on real products
From code to strategy: I lead initiatives, mentor developers, and drive architecture decisions with business impact.
8+
years shipping production software
CEO
JLS Software Solutions S.A.C.
6+
companies and consultancies
Stores
Play Store and App Store
Work experience
Corporate roles, consulting, and what I build from my studio. Newest first.
2017 — present
Founder & CEO
JLS Software Solutions S.A.C. · Trujillo
I run the studio: product, architecture, delivery, and client relationship. The same bar as banking, retail, and telco, applied to businesses that need to go digital now.
- Restaurant platform: orders, digital menus, dashboards, and user management.
- Websites, landings, and e-commerce with domain, hosting, and ongoing support.
- Android and iOS apps with Play Store / App Store publication and maintenance.
- Initiative leadership, mentoring, and architecture decisions with business impact.
2025 — 2026
Senior Mobile Developer
Tsoft · Chile & Mexico
Unimarc (Chile retail): Store Locator with Jetpack Compose, geolocation, and maps. Telcel: responsive web UI with React, TypeScript, and Tailwind. Contributions to Kotlin Multiplatform.
- Maintenance and new features for Unimarc, including a Store Locator in Jetpack Compose.
- Geolocation, maps, and traffic debugging with Charles Proxy.
- Clean Architecture and SOLID in production Kotlin.
- Kotlin Multiplatform contributions to share logic across platforms.
- Telcel web UI: responsive frontend with React, TypeScript, and Tailwind.
- Full SDLC: analysis, development, QA, and release.
2023 — 2025
Senior Mobile Developer
Delosi Peru S.A.C.
Enterprise apps for operations, scheduling, and inspections. Tablet ordering for Starbucks (capture, tickets, real-time printing). Nationwide work-order platform for Starbucks and Chili’s. Flutter, Compose, and native iOS/Android extensions.
- Internal apps for operations, scheduling, and inspections used nationwide.
- Starbucks tablet ordering: capture, tickets, and real-time printing.
- Work-order platform for Starbucks and Chili’s, integrated with warehouse ops.
- Modular / microfrontend Flutter architecture with native Android and iOS extensions.
- Jetpack Compose and native iOS UI when the flow required it.
- API integration, auth, local storage, and printing.
- Play Store and App Store releases, plus direct work with brand stakeholders.
2023
Senior Mobile Developer
Globant S.A.C.
Android support for Disney Cruise, ESPN, and Fantasy. Compose, Coroutines, JUnit/Mockito, Jenkins pipelines, and Flutter training for the community.
- Android support on high-traffic apps: Disney Cruise, ESPN, and Fantasy.
- Jetpack Compose, Coroutines, and clean architecture practices.
- Unit tests with JUnit and Mockito.
- Jenkins pipelines for CI/CD.
- Flutter training for Globant’s internal community.
2019 — 2022
Senior Mobile Developer
NTT DATA Europe & LATAM
Native Claro Smart Home. BCP Benefits framework for Android & iOS (NativeScript and React Native). Jenkins/Fortify CI/CD, Friends & Family, technical interviews, and Mobile community training.
- Native Claro Smart Home (connected home).
- BCP Benefits framework and migration for Android and iOS (NativeScript and React Native).
- Jenkins CI/CD and Fortify security analysis to bank standards.
- Friends & Family program before store rollout.
- Technical interviews and training materials for the Mobile community.
- Mentoring junior developers and architecture reviews.
2018
Mobile Developer
Universidad San Ignacio de Loyola
SIR app for San Ignacio de Recalde School: VisaNet payments, grades, schedules, and supplies. Student, teacher, and parent roles. Live on Play Store.
- SIR app for San Ignacio de Recalde School, live on Play Store.
- VisaNet payments, grades, schedules, and school supplies.
- Distinct flows for students, teachers, and parents.
- Real production usage by the school community.
2017 — 2019
Full Stack Developer
Expert Technologies
SIGECO (security, sales, inventory, treasury, e-invoicing) at LUBTEC, NOROIL, Grupo LCC, and OKEY. Order-taking apps for OKEY and Mobil. .NET Core, Azure, Docker, and native Android.
- SIGECO: security, sales, inventory, treasury, and e-invoicing.
- Rollouts at LUBTEC, NOROIL, Grupo LCC, and OKEY.
- Order-taking apps for OKEY and Mobil (native Android).
- Backend and APIs with .NET Core, Azure, and Docker.
- End-to-end Full Stack delivery, from server to app.
What I build
The same bar as banking, retail, and telco, applied to products that need to ship.
- Restaurant platform: orders, menus, dashboards, and users.
- Websites, landings, and e-commerce with domain, hosting, and support.
- Android and iOS apps with store publication and maintenance.
Portfolio highlights
More products in production
Unimarc · Store Locator
Store locator in Jetpack Compose, with geolocation, maps, and Chile retail features.
Claro Smart Home
Native connected-home app: devices, automation, and telco experience in production.
SIR · Recalde School
VisaNet payments, grades, schedules, and supplies, with student, teacher, and parent roles. Live on Play Store.
SIGECO · OKEY & Mobil
ERP for sales, inventory, and e-invoicing, plus field order-taking apps.
How I work
Native mobile
Kotlin, Java, Jetpack Compose, Clean Architecture, KMP.
Cross-platform
Flutter, React Native, NativeScript.
Full stack
React, Next.js, TypeScript, NestJS, Spring Boot, APIs.
Quality & cloud
CI/CD, Docker, Firebase, PostgreSQL, Play Console.
Technical leadership
Mentoring, interviews, architecture decisions, and stakeholder delivery.
Stores & release
Play Console, App Store, Friends & Family, Fortify, and Jenkins pipelines.
Education
UPC · 2020
Computer Systems Engineering.
Cibertec · 2015–2017
Professional technician in Computing and IT.
ICPNA · 2008–2011
English basic to advanced. Native Spanish, English B2.
Shall we talk about your product?
Reach me on WhatsApp or email. I will come back with a clear scope.