Idelfonso Gutierrez
👨🏻💻iOS Software Developer
From Venezuela 🇻🇪 in Chicago, IL
🗣 Spanish 🇪🇸 English 🇬🇧
| Projects 🔬 | Experience 👨🏻💻 | Clients 🌾 | Education 🎓 | Volunteer 🧑🏻🏫 | Tech Stack 🛠 | Hobbies 📚 |
| Github | @idelfonsoGM | Contact 📱 | Download PDF 💾 |
Projects
Writting BDD + TDD in my current projects
- Who writes TDD? tricky question🤔😅. Best case, its the output of a conversation between: devs, product owners/managers, stakeholders, and quality assurance testers
- What is TDD? write software that assumes your production software is already built and make it compile/pass.
- Why use TDD? In order to avoid introducing bugs as you are adding or changing behavior.
- When? Drill down what you want your users to achieve as concepts first [capabilities]
- Where? TextEdit! 📑 honestly!
- How to? Gherkin + Cucumber…ish + XCTest take a look https://github.com/idelfonsog2/Cucumberish-UnitTest 👈🏽👀
Behavior driven development (BDD), Test driven development (TDD)
The Problem
A developer could write the following below. But this is missing some context, and only developers could! be able to understand what is the system is doing.
func testSystem_whenReset_isInStarted() {
sut.setToInProgress()
sut.restart()
XCTAssertEqual(sut.state, .blank)
}
A different approach
Given the application is "in progress"
When a user "restarts" the application
Then the application will set to "default"
func Given("the application is [regex]") { state in
sut.set(state)
}
func When("a user [regex] the application") { action in
sut.perform(action)
}
func Then("the application will set to [regex]") { expected in
XCTAssertEqual(expected, sut.state)
}
The result out of it is that developers can make a set of reusable tests and stakeholders, product owners, QA tester can expand this tests into every state of the system.
Developers only need to keep following their TDD approach.
Stranded
Background:
ORD 🛫 MIA 🛬 ETD 2:00 hr
What’s there to do at an airport besides waiting for your flight?
What about if we could meet someone?… Don’t worry is not tinder
What’s the ice breaker?
Math ➗ is international spoken, music 🎼 is international heard, body language too. A language_ 🗣 not so much 😕
🎺 + 💃🏻 + 🕺🏻 = social interaction
You don’t need to talk when dancing Foxtrot, Salsa, Tango or Swing!
The Solution: Coming soon
🙂 Stranded brings people together at an international place (airport) in different time zones! 😲 Allowing them to socialize through dancing <insert research paper here>
h233f7343sh2sd chores: brief changes
tech: Vapor Framework
mmMapp
Background:
Have you ever had too many events in the same day at different times and different locations?
Were the events or appointments located close to each other?
Do you always take into consideration how long will it take you to go from appointment A to appointment B?
What about lunch? Do you have time to eat in the middle?
Or where you live? Chicago? Great city transit by the way! 5x_ ⭐️ Miami? ☹️ _Sorry its an 1:40 min traffic along the I-95
But most importantly! How happy or how stress are you? ⛱ 🤯
The Solution: Coming soon
Display vCard
The Problem:
Do you have a business card? it probably has a cool design 📇
They are useful when you need to leave in a rush
There is a individual in the middle, or “man in the middle”
manual work is prompt to error
The Solution:
- Update your information properly, inside the contacts app
- Install Shorcut 🛠
- Select your contact card inside the shortcut “add contacts” step, it will show “me” on the right hand side of the list item
- Now everytime you have to leave in a rush have the person use the built-in! camera app 📲📷 to scan your contact in one second
Note: also use “Share sheet” to send it using AirDrop, not too many users allow airdrop from everyone
tech: Siri shortcut
YellowPepper Talks
Introduction to Firebase Database, IAM, and backend for the front end developers.
I talked about how to start with Firebase, Realtime Database, and its rules. Also about Storage Database and it rules
Along with it, I developed a small sample iOS project using Swift to send text and image nodes, how they are shown in the firebase console, and which methods I use to retrieve them in the client
tech: Swift, UIKit, AutoLayout, Firebase Realtime DB
Hero World
Creating a test case for a new park for The Walt Disney company in order to track schedules and budgeting for the construction of all the projects.
Our dev team was able to implement a database using normalization, which helps identifies the identities inside the projects. We developed process of Table Creation, Views, Stored Procedures, Triggers. During the project we learned how an activity relates to a project, how a project can have many employees, and how a firm can own many employees. This is done using the concept of relational database.
tech: MySQL*
Tubmlr Client
Created an iOS client in order to search blog users in Tumblr, follow users, and post text blogs.
tech: Tumblr API, UIKit
On the Map
“On The Map” app allows users to share their location and a URL with their fellow students
tech: MapKit, Parse, Udacity API
Virtual Tourist
Wondering what kind of pictures have people taken in a particular place around the world?
Think about Virtual Tourist before Instagram search feature using Flicker
tech Flicker API, MapkKit, UIKit
Clients
Ally's Flower
Using Wordpress and Woocommerce was able to create a simple solution for a small business.
The owner was so glad that she didn’t need the help of a tech savvy person and that it could easily integrate with the power of Square (POS)
tech: Wordpress, CRM, POS
Proendoscopy
Created an iOS app to manage a database of items. Pros the effectiveness of adding a new item to the device database and reducing the time up to 97.5%.
Proendoscopy is a local company in the city of Sunrise, it specializes in the service and repair of medical equipment, mainly endoscopes.
Our dev team was able to quickly identify the main problem in their workflow and inefficiency of procedures in the sales department
tech: iOS: Objective-C, CoreData, UIKit
Experience
iOS Software Developer | GrowIt! | Chicago, U.S. | Feb. 2018 - Present
- In order to increase 40 percent of the user base for our third-party clients, I implemented beacon technology, relational database, and mapbopx library, which helped the company finalize 3 more contracts
- Use the mobile instrumentation tool to increase the efficiency of compilation time from 5 minutes to 2 minutes and a half. Additionally, this help catch data race conditions between Swift and Objective-C
- Implement Behavior Driven Development, which is a document base layer for stakeholders to help understand the situation, requirements, actions and results for every new and legacy feature.
- Automate the unit testing suite, app production submission, and quality assurance builds using continuous integration and continuous deployment pipeline along with Fastlane.
- Help the community team decrease the amount of time reviewing inappropriate content by implementing an image machine learning model based on a plant database to identify things that are not plants.
- Solo developer in the project
tools/frameworks/libraries:
- fastlane, circleCI, apple push notifications services, RealmDB, iBeacon, AutoLayout, Mapbox, ReactiveCocoa/Swift 🛠
tags: horticulture
Technical Analyst iOS Mobile Developer | Solstice Consulting | Chicago, U.S. | Sept 2017 - Feb 2018
- Developing and maintaining ongoing project using unit testing frameworks, AWS APIs and Protobuf
- Development of features between Internet of Things device and iPad App
- Deliver a presentation about machine learning intro which helped implement image recognition on a robot
tools/frameworks/libraries:
- Jenkins, MongoDB, WebSockets, AutoLayout, Protobuf, ReactiveCocoa/Swift 🛠
tags: agriculture
Intern iOS Mobile Developer | YellowPepper | Miami, U.S. | Nov 2016 - May 2017
- Worked with multiple iOS mobile banking apps developed with Objective-C and third-party frameworks.
- Worked with an off-site team and product owner (different time zones) in order to address patch fixes.
- Addressed client’s concern regarding the app’s privacy policy in order to submit to App Store.
tools/frameworks/libraries:
- PCI APIs, Jenkins, AutoLayout, Objective-C, Alamofire 🛠
tags: finnancial technology
IT Intern Developer | Martin Digital Group | Miami, U.S. | Jan 2014 - April 2015`
- Strengthen relationship with the clients by integrating my technical experience and expertise.
- Fashioned a blog to look like a fitness site for moms and a subscription program.
- Checked logs and malfunctioning errors to avoid conflict with purchasing process on the website.
- Maintained the network, installation, and use of new software and process.
tags: online marketing
Volunteer
Instructor | CoderDojo | Miami, U.S. | Dec 2014 - May 2016
- Created stimulating lessons/games to an average of 20 students per session.
- Taught ongoing process and/or created new projects for beginners in a class of twenty students.
- Adapted sites like scratch.mit.edu and arduino.cc to motivate student’s creativity through technology.
- Coached public speaking at the end of each session so young ones can acquire the skills on how to structure their ideas.
tags: education
Java II Learning Assistant | Florida International University CIS Department | Miami, U.S. | Dec 2015 - May 2016
- Taught on an ongoing process and/or create new projects for college students using Java programming language in a class of twenty students
- Explained Object Oriented Programming concepts during in and out sessions
- Used pair programming with students in order to practice and review material
tags: education
Education
- B.S. Software Developer Florida International University Aug 2012 - May 2016
- Minor: Social Media and E-marketing Analytics
- Startup Cohort @FIU Jan 2017 - April 2017
- iOS Nanodegree Udacity Sep 2016 - Nov 2016
Tech stack
- Several years of professional experience developing and shipping iOS apps.
- Solid knowledge of Swift, Objective-C and the iOS SDK.
- Knowledge of software architecture and best practices.
- Experience with Core Data and RESTful APIs.
- Able to write multi-threaded and asynchronous code.
- Experience in managing the Apple certification/provisioning and App Store delivery process.
- Experience working in collaborative teams, and understand the benefits of sharing knowledge via pair programming and code reviews.
- Keeping up to date with new technologies and the iOS community 🙏
- Test-driven development experience, knowledge of CI systems (CircleCI, Gitlab, Jenkins)
- Dependency managers
- Technical leadership of the iOS team
- Mentoring other developers (also read: volunteer)
- Ensuring best practices and good code quality
- Own the technical vision of the iOS app
- Cross-platform collaboration and coordination
- Work on application stability and improving application performance
- Being the contact person between management and the iOS team
- Continuously discover, evaluate, and implement new technologies to maximize our development team efficiency.
- Hands-on development of new features and fixing bugs
Frameworks
- CoreML (machine learning on mobile)
- mvvm+c, mvc, mvc+vs, mavb (mobile design patterns and anit-patterns)
- CoreLocation, CoreBluetooth, iBeacon, EventKit… (Apple Frameworks)
- Swift package manager, Cocoapods (dependency managers)
- version control systems
- asynchronous programming
- AutoLayout (programmatically & storyboards) ((its better to know both))
Contact Information
Hobbies
Reads
- Behavior Driven Development in Action
- Async Programming (Rx, SwiftNIO)
- Working With Legacy Code
- Desgining Data-Intensive Applications
- Vapor Framework
- A metabolic approach to cancer 📚
que bueno 🤣🙌🏾 Actitud | Victor Küppers | TEDxAndorralaVella https://t.co/orerUgfhpo via @YouTube
— Idelfonso (@idelfonsoGM) November 22, 2019
Tango
Photograph by Charapin 🙌🏾
