About Marcos Luis Banos de Guisasola

Nationality: Spaniard

Actual location: Oakland, CA

Visa Status: L2

E.A.D Holder




Highly motivated and energetic IT professional with a Bachelor’s degree in Computer Science Engineering. Over 8 years of international experience. iOS Freelance Developer since 2014 with a background of 5 years working with Objective-C and SWIFT (since 2016). Before that worked as a CRM Siebel Consultant for several corporate clients such as banks, insurance companies, biotechnology and aerospace industry.

Quick learner mastering things. Enjoys working in a fast paced multicultural environment as part of a team.


Strengths include:


  • UI/UX Designer. Objective C & SWIFT full apps cycle from scratch to Apple Store. Back to Front end.
  • Skilled at communicating and working on multiple global project teams for different clients and environments.
  • Self-motivated with ability to learn and master new technologies and resources quickly as daily tasks.
  • Flexible and able to work unsupervised and in a team environment.





LUCID VR (3D VR camera) Head of Software/IOS Developer, Santa Clara CA, USA       2015 Jul 2016    


  • Responsible of all software related at startup located in Berkley and Santa Clara.
  • Server Administrator, development and maintenance (GoDaddy VPS)
  • Demo app (LucidApp VR) development for Lucid VR demo purposes:
    • Lucid VR produces demo videos and use the app for free distribution and advertising
  • From Front End to Back End: Objective C & Swift
  • Publish in Apple Store and test via Testflight
  • Webservices (JSON) development with PHP
  • Users registration and data maintenance in MySQL database
  • App features include:
  • UIKit, Foundation, FBSDK, Core Graphics, Core Motion, Core Image, Audio ToolBox, AVKit, OpenGL, AVFoundation
  • Tools: SourceTree, Asana, Sketch 3 and PaintCode




Freelance Developer, San Francisco CA, USA                                                                       2014 2015    


  • Objective-C apps for Iphone and Ipad. Apps on Apple Store.
  • YouTube Channel: MB Mini Tutoriales (XCode iOS Objective-C Spanish Tutorials)\
  • SWIFT 3 & XCode 8 Training (INVASIVECODE San Francisco CA, USA 07/2016)
  • IOS Advance Objective C (Big Nerd Ranch CA, USA 05/2015)
  • XCode 5 IOS 7 (Academyx SF, USA 08/2014)
  • SQL (Webucator New York, USA 07/2014)



Freelance Developer, Basel, Switzerland                                                                               2011 2013


  • Objective-C apps for Iphone and Ipad
  • PHP/MySQL websites


  • XCode 4.5 (AGBO.com Madrid, Spain 02/2013)



The Birchman Group, Madrid, Spain                                                                                       2006 2011

Siebel Professional Services Consultant


Worked for projects in Spain and overseas for Siebel CRM implementation. Relocated to Dominican Republic for 3 months for a Bank project.


Main consulting responsibilities included:

  • Defining and implementing new requirements from the client’s direct input.
  • Collaborating with clients to design improved workflows for their internal processes using Siebel CRM.
  • Analyzing the compatibility between versions deployed between different branches of the same company in order to reduce risk for migration and global upgrades.
  • Strengthening the application performance through analysis and improvement of common queries.
  • Communicated directly with development, test and production environments.
  • Tested and assured quality of the application prior to client’s acceptance.


Field development services included:

  • UI design for non specialized users.
  • Developing user interfaces screens, views and templates within the Siebel application.
  • Analysis and development of business workflows.
  • Developing a GPS coordinates/routes tracking application pairing Siebel interface/Blackberry devices and integrating Map visualization functionality in real time using Google Maps.
  • BrowserScript, vScript custom development routines integrating Siebel CRM.
  • Writing proposals and technical deliveries for clients and end users.
  • Working supervised, unsupervised and supervising.


Clients included:

  • Japanese Tobacco International (Camel/Winston)
  • Codere Spain Gambling Market (Gaming industry)
  • BHD Bank, Dominican Republic
  • TCP Sistemas e Ingeniería (Aerospace industry)
  • Prosegur Spain (Alarm & Security systems)






Personal Computer & Internet, Tech.Magazine, Madrid, Spain                                        3/2005 6/2006

Writer for hardware and new technologies

  • Evaluated several new products of hardware, such as computers, laptops, media players, routers, digital cameras, monitors, speakers, cell phones. (Unboxing).
  • Created an evaluation report comparing similar products.
  • Wrote several articles about different products: reported on and provided personal evaluation.






InvasiveCode SF, USA                                                                                                                         07/2016

SWIFT 3 & XCode 8 Training


Big Nerd Ranch (BNR) CA, USA                                                                                                           05/2015

iOS Objective C Advanced IntensiveTraining


Webucator NY, USA                                                                                                                             07/2014

SQL Fundamentals


Academyx SF, USA                                                                                                                               08/2014

Xcode 5 iOS7 Intermediate level


Agbo Madrid, Spain                                                                                                                             02/2013

Introduction to XCode 4.5


Universidad Pontificia de Salamanca, Madrid, Spain                                                                      1998 2008

Bachelor of Engineering in Computer Science




Spanish: Native Language

English: Full professional proficiency

German: Limited professional proficiency (beginner level)




UIKit, Foundation, CoreGraphics, QuartzCore, CoreData, NSUserDefaults, AVFoundation, MapKit, CoreLocation, Airdrop. View Animations, View Controller Transitions,

MVC, Extensions.




Siebel related Tools:

Siebel 7, 8: eConsumer Sector, CallCenter, eFinancial, Siebel Sales, Siebel Service Wireless

Siebel Tools,


Programming Languages:

SWIFT, Objective-C,PHP, vScript, eScript, BrowserScript, C, MySQL



SQL Server, MySQL, Oracle


Scripting and Markup:

HTML, Java



.NET, Win32, Linux




Paint, travel, sports, music and new technologies