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Hi, I'm Cristian Sierra.

I’m a Senior Software Engineer with a passion for helping B2C companies and entrepreneurs grow their online presence through effective web solutions and SEO techniques. My goal is to convert online visitors into potential customers for my clients.
 
I have extensive experience in creating migration plans for websites and web applications, configuring hosting and web servers, and developing multi-platform mobile applications. I understand the importance of keeping up with the latest technology and trends in the industry, and I’m always striving to expand my knowledge and skills.
 
I believe that the key to my success is a combination of technical expertise and a deep understanding of my client’s needs and goals. Let me show you what I can do to help you achieve your objectives.
Book Me

My Work.

LatOne Group

Site Migration: LabOne Group (Site Migration) - Cristian migrated our website from Bluehost to GoDaddy with ease and efficiency, ensuring that everything was properly set up and functioning optimally. With that, the new Latone Group was capable of staying up to date with a more capable server and user-capable infrastructure.

Plastilene

Twenty WordPress Sites: Creation of a compound of WordPress multisite, multi-domain, and multilingual, delivering a highly functional and user-friendly website. He gave the possibility for Plastilene Group to bring their websites to the new century by implementing an advanced UI interface. He also managed the migration process with ease and efficiency, bringing the site to the production stage in no time.

GranRetomaIntel

Laravel Reporting Platform: LabOne Group (Gran Retoma Intel) - Cristian was instrumental in the creation of the admin platform for the Gran Retoma Intel project using Laravel. He expertly integrated the platform with a database and pushed the site to production, while also generating detailed reports. In addition, he showcased charts with the number of people trading their computers from old Intel processors to the latest generations of Intel silicon.

My Expertise.

  • Web Development – WordPress API, WordPress Templates, Advanced Custom Fields, CMS, Blogs, Multisite, Multilanguage, Multidomain, and KeystoneJS.
  • SEO – Google Analytics, Layout setup, sitemap, Google Page Speed, meta tags, Linking pages, Internal Navigation, Organic search, URL params, etc.
  • Full-Stack Development – REST API (NodeJS and Laravel), ReactJS, Typescript, PHP, and others.
  • API Auth Integration – Auth0, Okta, Passport.js, Google OAuth, Facebook Auth API, and LinkedIn API.
  • Hosting and Migration: AWS LightSail, AWS EC2, Google Cloud Platform, GoDaddy, Bluehost, Digital Ocean, and many more.
  • Mobile App Development – Hybrid Apps, React Native, Flutter, Ionic, iOS & Android.
  • Database – SQL, non-SQL, MongoDB, MySQL, PostgreSQL, Redis and Oracle 12g

My Clients.

Testimonials.

I highly recommend Cristian Sierra for his exceptional website migration skills. He successfully migrated our website from Bluehost to Godaddy with ease and efficiency, ensuring that everything was properly set up and functioning optimally. Cristian's attention to detail, technical expertise, and problem-solving abilities made the transition seamless. I am extremely impressed with his work and would not hesitate to use him again in the future.

Luis Acuña
Position of client: Design and Creative Direction, UX/UI Designer Lead, Digital Projects Manager

Cristian Sierra is a true asset to any development project. He was an integral part of our team working on Galeno, KTE, and Vtex_SAP, and his contributions were invaluable. Cristian's ability to develop, fix, and improve code implementations was truly impressive, and his attention to detail ensured that the end result was of the highest quality.

He was always willing to go the extra mile to ensure that our projects were a success, and I couldn't be more grateful for his hard work and dedication. I highly recommend Cristian for any coding needs and look forward to the opportunity to work with him again in the future.

Manuel Yañez
Presales Engineer

I had the pleasure of working with Cristian Sierra on a complex project for our client, Plastilene, and was blown away by his expertise and professionalism. Cristian successfully created a compound of WordPress multisite, multi-domain, and multilingual, delivering a highly functional and user-friendly website. He also managed the migration process with ease and efficiency, bringing the site to the production stage in no time.

Cristian's technical knowledge and attention to detail made the entire experience stress-free, and I couldn't be happier with the result. I highly recommend Cristian for any website development projects, and I look forward to working with him again in the future.

Luis Acuña
Director of Solum Digital

My Pricing.

Web Development

Starting at $4000 / Contract

What's included:

  • Development of Information Architecture
  • UI/UX website design
  • WordPress/CMS development
  • SEO optimization (Google Analytics)
  • Blog set-up
  • Demo website domain

Full Stack & Mobile Development

Starting at $5000 / Contract

What's included:

  • Development of Information Architecture
  • UI/UX design
  • Website/iOS & Android Frontend interface
  • API Rest/SOAP Backend microservices
  • AWS Lambda services, AWS DynamoDB, S3 storage

Cloud Engineering

Starting at $2500/contract

What's included:

  • Website migration plan design and execution
  • Hosting website configuration
  • Hosting migration
  • Web hosting back-up
  • Domain and subdomain configuration.

Contact Me.

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