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Senior Full Stack Software Engineer | Web & Mobile Developer | Cloud & DevOps Consultant

I’m a Senior Full Stack Software Engineer with 10+ years of experience helping companies and entrepreneurs design, develop, and scale modern web, mobile, and cloud based solutions. I specialize in creating high quality, maintainable, and high performance applications, always applying Clean Code and Clean Architecture principles.

My Core Skills & Technologies

* Frontend: Angular, Next.js, TypeScript, HTML5, SCSS, TailwindCSS.
* Backend: NestJS, Java, Spring Boot, Node.js, Express.
* Databases: PostgreSQL, MySQL, MongoDB.
* Mobile: Flutter (cross platform apps for Android & iOS).
* APIs: REST, GraphQL, API Gateway configuration.
* Cloud & DevOps: AWS, Docker, CapRover, GitHub Actions CI/CD, Appwrite, Kong Gateway.
* Open Source Solutions: Customization & deployment of tools like Appwrite, Poste.io, MediaCMS, etc.

What I Offer on Workana

* Full Stack Web Development: From design to deployment, scalable and responsive applications.
* Mobile App Development: Flutter based apps with secure backend integrations.
* Cloud Architecture & DevOps: Dockerized deployments, cloud migration, and automation.
* API Development & Integration: Secure, fast, and well documented REST & GraphQL APIs.
* Database Design & Optimization: High performance relational and NoSQL solutions.
* Open Source Self Hosted Deployments: Tailored solutions with low operational costs.

Why Work With Me?
✔️ Over a decade of professional experience with clients from various industries.
✔️ Expertise in both enterprise level systems and small business solutions.
✔️ Agile communication and project management for transparent progress tracking.
✔️ Proven ability to deliver on time, on budget, and above expectations.

If you’re looking for a reliable, detail oriented, and results driven developer to bring your project to life, let’s talk. I’m ready to help you turn your ideas into reality.","rawText":"Hello, I'm Jhonatan Arenas Senior Full Stack Software Engineer | Web & Mobile Developer | Cloud & DevOps Consultant I’m a Senior Full Stack Software Engineer with 10+ years of experience helping companies and entrepreneurs design, develop, and scale modern web, mobile, and cloud based solutions. I specialize in creating high quality, maintainable, and high performance applications, always applying Clean Code and Clean Architecture principles. My Core Skills & Technologies * Frontend: Angular, Next.js, TypeScript, HTML5, SCSS, TailwindCSS. * Backend: NestJS, Java, Spring Boot, Node.js, Express. * Databases: PostgreSQL, MySQL, MongoDB. * Mobile: Flutter (cross platform apps for Android & iOS). * APIs: REST, GraphQL, API Gateway configuration. * Cloud & DevOps: AWS, Docker, CapRover, GitHub Actions CI/CD, Appwrite, Kong Gateway. * Open Source Solutions: Customization & deployment of tools like Appwrite, Poste.io, MediaCMS, etc. What I Offer on Workana * Full Stack Web Development: From design to deployment, scalable and responsive applications. * Mobile App Development: Flutter based apps with secure backend integrations. * Cloud Architecture & DevOps: Dockerized deployments, cloud migration, and automation. * API Development & Integration: Secure, fast, and well documented REST & GraphQL APIs. * Database Design & Optimization: High performance relational and NoSQL solutions. * Open Source Self Hosted Deployments: Tailored solutions with low operational costs. Why Work With Me? ✔️ Over a decade of professional experience with clients from various industries. ✔️ Expertise in both enterprise level systems and small business solutions. ✔️ Agile communication and project management for transparent progress tracking. ✔️ Proven ability to deliver on time, on budget, and above expectations. If you’re looking for a reliable, detail oriented, and results driven developer to bring your project to life, let’s talk. I’m ready to help you turn your ideas into reality.","canEdit":false,"editUrl":"https://www.workana.com/freelancer/94a4fdf114621fcf6823b88ac68c6df3/profile/description","g11n":{"edit":"Edit","save":"Save","cancel":"Cancel","warning":"Warning: Don't share contact information or you may be blocked.","expandText":"View more","collapseText":"View less","placeholder":"In a few words, sum up what best defines you as a professional. Show the world what you have to offer and give direction to your freelance career. Ex: Image and sound designer specializing in institutional videos and photo retouching."},"validation":{"required":true,"min":20}},"history":{"section":"history","title":"Work history","dangerouslyWillBeRenderAsHtml_text":"- Technical Anchor | LATAM Airlines (via Consulting Firm)
Period: 2 years

Description: Served as the Technical Anchor, leading the technical direction of the squad, ensuring code quality, architectural consistency, and effective collaboration between developers, QA, and stakeholders. Responsible for guiding the development team, configuring environments, and proactively improving systems through the identification, analysis, and resolution of faults and incidents.

Responsibilities & Contributions:
Backend: Analysis, design, and development of microservices using Java Spring Boot.
Frontend: Support and maintenance of Angular 8 applications, ensuring performance and usability standards.
Cloud: Configuration of CI/CD pipelines and projects in Google Cloud Platform (GCP).
Incident Management: Reduced recurring production issues through root-cause analysis and preventive improvements.
Team Enablement: Provided technical mentoring to junior and mid-level developers to improve delivery efficiency.
Key Achievement: Reduced average incident resolution time by 35% and increased deployment pipeline reliability, reducing failed deployments to near zero.

- Senior Backend Developer / Technical Anchor | Banking Digital Super App (International Client)
Period: Last 3 years (2 different squads)

* Squad 1 – Tap2Phone (Mobile Device POS) (~2 years)
Project focused on enabling smartphones to operate as Point-of-Sale (POS) devices, fully compliant with security standards and financial regulations.

Responsibilities & Contributions:

Researched, defined, and implemented custom authentication policies for feature access, using Azure AD B2C in its legacy XML-based configuration.
Developed and customized the HTML layer deployed within these authentication policies to improve user experience.
Contributed to the development of REST API endpoints supporting the authentication policies.
Coordinated with strategic partners (mobile payment infrastructure providers) to integrate our login as an identity provider within their AWS Cognito platform.
Managed authentication and permissions, enabling super app users to securely access Tap2Phone while complying with industry regulations.
Key Achievement: Delivered a stable and secure integration between multiple identity providers, reducing user friction and ensuring compliance with international financial regulations.

* Squad 2 – Outbound Remittances (International Money Transfers) (~1 year, ongoing)
Project aimed at expanding the super app’s capabilities to enable international money transfers, integrating multiple delivery methods and international partners.

Responsibilities & Contributions:

Integrated push notification and OTP validation services into core business flows.
Implemented key components of the transfer flow, including order creation within partner systems.
Served as the right-hand (Technical Anchor) to the Tech Lead in designing and adapting transfer flows for multiple countries, delivery methods, and partners.
Led the migration of outbound remittance logic and REST APIs—originally sharing code with inbound flows—into independent projects to improve scalability and dependency management.
Key Achievement: Successfully separated projects, reducing code complexity, improving maintainability, and enabling independent development cycles without affecting the existing inbound remittance functionality.","rawText":"- Technical Anchor | LATAM Airlines (via Consulting Firm) Period: 2 years Description: Served as the Technical Anchor, leading the technical direction of the squad, ensuring code quality, architectural consistency, and effective collaboration between developers, QA, and stakeholders. Responsible for guiding the development team, configuring environments, and proactively improving systems through the identification, analysis, and resolution of faults and incidents. Responsibilities & Contributions: Backend: Analysis, design, and development of microservices using Java Spring Boot. Frontend: Support and maintenance of Angular 8 applications, ensuring performance and usability standards. Cloud: Configuration of CI/CD pipelines and projects in Google Cloud Platform (GCP). Incident Management: Reduced recurring production issues through root-cause analysis and preventive improvements. Team Enablement: Provided technical mentoring to junior and mid-level developers to improve delivery efficiency. Key Achievement: Reduced average incident resolution time by 35% and increased deployment pipeline reliability, reducing failed deployments to near zero. - Senior Backend Developer / Technical Anchor | Banking Digital Super App (International Client) Period: Last 3 years (2 different squads) * Squad 1 – Tap2Phone (Mobile Device POS) (~2 years) Project focused on enabling smartphones to operate as Point-of-Sale (POS) devices, fully compliant with security standards and financial regulations. Responsibilities & Contributions: Researched, defined, and implemented custom authentication policies for feature access, using Azure AD B2C in its legacy XML-based configuration. Developed and customized the HTML layer deployed within these authentication policies to improve user experience. Contributed to the development of REST API endpoints supporting the authentication policies. Coordinated with strategic partners (mobile payment infrastructure providers) to integrate our login as an identity provider within their AWS Cognito platform. Managed authentication and permissions, enabling super app users to securely access Tap2Phone while complying with industry regulations. Key Achievement: Delivered a stable and secure integration between multiple identity providers, reducing user friction and ensuring compliance with international financial regulations. * Squad 2 – Outbound Remittances (International Money Transfers) (~1 year, ongoing) Project aimed at expanding the super app’s capabilities to enable international money transfers, integrating multiple delivery methods and international partners. 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