Yazan Atef Khaleel Houshieh, Apex Triggers Developer in Munich, Bavaria, Germany
Yazan Atef Khaleel Houshieh

Apex Triggers Developer in Munich, Bavaria, Germany

Member since April 17, 2019
Yazan is a systems engineer with a passion for creating high-quality solutions. He is also a senior Salesforce developer with many years of experience. He's worked on big projects and developed cutting-edge salesforce frameworks and holds a Salesforce Application Architect certificate, together with five more Salesforce certificates.
Yazan is now available for hire




Munich, Bavaria, Germany



Preferred Environment

Visual Studio Code, Salesforce DX, MacOS

The most amazing...

...Paillier cryptosystem I've developed is compliant with the MySQL environment and addressed encryption, decryption, homomorphic addition, and multiplication.


  • Senior Salesforce Developer

    2021 - PRESENT
    • Created Salesforce DX projects for different-sized organizations and automated the process of testing and deployment to staging and production.
    • Designed and implemented solutions with high adaption rates for different teams at an exceptional time.
    • Wrote integrations for many third-party services via REST and SOAP.
    Technologies: Apex, Batch Apex, Salesforce Lightning, Git, Salesforce DX, Aura
  • Salesforce Developer

    2019 - 2021
    Salesfive Consulting Gmbh
    • Designed and implemented complex solutions for multiple clients. Topics included: Apex Sharing, custom hierarchies, and chat integration.
    • Took ownership of multiple projects development. Worked on various clouds like Sales, Service, CPQ, and FSL.
    • Integrated various systems with Salesforce via REST, SOAP, and Web Services. Created CI processes with Salesforce DX.
    Technologies: Salesforce
  • Salesforce Consultant

    2018 - 2019
    ASAL Technologies
    • Developed ASAL’s ATS system.
    • Conducted UI/UX study.
    • Completed requirements gathering, user/stakeholder interviews, affinity maps, personas, and user journeys.
    • Created UI sketches for the initial ATS design.
    Technologies: Salesforce
  • Full-stack Developer

    2018 - 2019
    ASAL Technologies
    • Added features to enhance the usability of the testing framework.
    • Designed and implemented UI for enhancing user experiences.
    • Integrated a socket solution into the exiting system.
    • Created a unit test to validate the quality of the development of the features.
    Technologies: Bootstrap, JavaScript, jQuery, Git, Scala, Play Framework, Java
  • Salesforce Developer

    2017 - 2018
    Sunreach Technology
    • Designed, implemented, and deployed both declarative and programmatic solutions.
    • Implemented solutions with lightning framework.
    • Deployed solutions using Change Sets, Workbench, and Ant Migration Tool.
    • Adapted a professional development cycle of development, QA, integration testing, UAT, and deployment.
    • Worked on integrating many different systems with Salesforce (REST API).
    Technologies: Salesforce Lightning, Bootstrap, CSS, HTML5, JavaScript, Visualforce, Asynchronous Programming, Triggers, Controller, Apex
  • Verification Engineer

    2016 - 2017
    Mellanox Technologies
    • Developed verification for ‘openSM’ and ‘ibdiagnet’ projects.
    • Designed, implemented, debugged, and deployed tests using Python and C.
    • Developed and integrated solutions to enhance the regression and add features to it.
    • Monitored regression result, analyze, and debug failures and fixed them.
    • Collaborated to identify, define, or solve developmental problems.
    Technologies: Git, Linux, Python


  • Querying Encrypted Databases

    In this project, we implemented Paillier cryptosystem that is compliant with MySQL environment.

    We addressed Encryption, Decryption, Homomorphic Addition and Multiplication. We used TPCH benchmark to generate the testing samples.

  • Breaking Vigener Cipher

    The objective of the project was to encrypt a Swedish text using Vigener cipher and break that ciphered text using the Friedman Test approach.

  • Where’s Croc

    Where's Croc is a game that serves as an application of hidden Markov models and the state estimation algorithm.

    In this game, there is a grid of holes, and Croc is moving between them.

    We used the algorithm and depending on the data of each hole to guide the ranger to catch Croc.

  • Delivery Man

    A proposed algorithm to solve the "Salesman Problem".

    The aim of the algorithm was to find the shortest path to deliver different packages, at different locations, for various destinations, in the fastest time possible.

  • Exchange Scholarship, Computer Science

    60 ECTS exchange scholarship at Uppsala University, Sweden.

    Attended many interesting courses, such as Artificial Intelligence, Computer Networks, Functional Programming, Data Mining, Database Design, Computer Assisted Image Analysis, Human-Computer Interaction, Advanced Computer Architecture, Cryptology, and Software Engineering in addition to doing multiple projects during this period.

  • SAT Preprocessing via Boolean Variable Elimination

    In this project, we built an algorithm to reduce the CNF input file size for the SAT solver via the elimination of variables.


  • Tools

    Git, Batch Apex, Process Builder, Sublime Text, IntelliJ, Salesforce DX
  • Platforms

    Salesforce, Salesforce SOQL/SOSL, Linux, MacOS, Visual Studio Code
  • Languages

    Apex, Python, Java, SOQL, HTML5, Scala, C++, SQL, CSS, HTML, JavaScript
  • Frameworks

    Visualforce, Play Framework, Lightning Components, Bootstrap
  • Other

    Apex Triggers, MavensMate, Controller, Triggers, Salesforce Lightning, Integration, Sharing & Visibility, Architecture, Aura, Computer, Projects
  • Libraries/APIs

    jQuery, REST APIs, Gmail API
  • Paradigms

    Asynchronous Programming, Management


  • Bachelor's Degree in Computer Systems Engineering
    2011 - 2016
    Palestine Polytechnic University - Hebron, Palestine


  • Salesforce Certified Application Architect
  • Salesforce Certified Data Architecture and Management Designer
  • Salesforce Certified Sharing and Visibility Designer
  • Salesforce Certified Platform Developer II
  • Salesforce Certified Platform App Builder
    DECEMBER 2018 - DECEMBER 2020
  • Salesforce Platform Developer I
    APRIL 2018 - PRESENT

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