Yazan is available for hire
Hire YazanYazan Atef Khaleel Houshieh
Verified Expert in Engineering
Salesforce Developer
Munich, Bavaria, Germany
Toptal member since April 17, 2019
Bio
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. Yazan's worked on big projects and developed cutting-edge Salesforce frameworks. He holds a Salesforce Application Architect certificate and five more Salesforce certificates.
Portfolio
Self-employed
Apex, Apex Classes, Acceptance Testing, Apex Triggers, API Integration, B2B...
Cazoo
Apex, Batch Apex, Salesforce Lightning, Git, Salesforce DX, Aura, Flow, Email...
Salesfive Consulting Gmbh
Salesforce, Flow, Email, Automation, JavaScript, API Integration...
Experience
- Lightning Components - 6 years
- Linux - 5 years
- Git - 5 years
- Apex Triggers - 4 years
- SOQL - 4 years
- Visualforce - 2 years
- Batch Apex - 2 years
- Apex - 2 years
Availability
Part-time
Preferred Environment
Visual Studio Code (VS Code), Salesforce DX, MacOS
The most amazing...
...pallier cryptosystem I've developed complies with the MySQL environment and addresses encryption, decryption, homomorphic addition, and multiplication.
Work Experience
Salesforce Solution Architect/Developer
2023 - PRESENT
Self-employed
- Enhanced the performance of a B2B web store by building high-quality solutions.
- Tracked and fixed bugs in a legacy system and used Jira as a reporting tool.
- Used SFD, GitHub Actions, and other plugins to build a CI/CD tool.
Technologies: Apex, Apex Classes, Acceptance Testing, Apex Triggers, API Integration, B2B, Git, DevOps, Agile, Salesforce, Salesforce Commerce Cloud, Salesforce Experience Cloud
Senior Salesforce Developer
2021 - 2023
Cazoo
- Initiated a source-driven development approach for an existing legacy Org and created a developer-friendly environment for developers to collaborate.
- Created a framework that exposes internal company services inside of Salesforce instance with seamless authentication, eventually reducing the time needed to execute a specific action.
- Wrote integrations for many 3rd-party services via REST and SOAP.
- Built tools to enhance communication between different teams, thus reducing the time needed to solve specific cases and eventually cost.
Technologies: Apex, Batch Apex, Salesforce Lightning, Git, Salesforce DX, Aura, Flow, Email, Automation, Salesforce, JavaScript, API Integration, Salesforce REST API, Salesforce Marketing Cloud, Salesforce API, Salesforce Apex, Lightning Components, Omni-channel, Data Modeling, Acceptance Testing, Salesforce Platform Events, REST APIs
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 project development. Worked on various clouds like Sales, Service, CPQ, and FSL.
- Integrated various systems with Salesforce via REST, SOAP, and web services.
Technologies: Salesforce, Flow, Email, Automation, JavaScript, API Integration, Salesforce REST API, Salesforce API, Salesforce Apex, Salesforce Lightning, Lightning Components, Data Modeling, Acceptance Testing, Salesforce Platform Events, REST APIs, Salesforce Experience Cloud
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, Flow, Email, Automation, API Integration, Salesforce REST API, Salesforce Apex, Lightning Components, Data Modeling, Acceptance Testing, Salesforce Platform Events, REST APIs
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 REST API, Data Modeling, Acceptance Testing, REST APIs
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, Salesforce, API Integration, Salesforce REST API, Salesforce API, Salesforce Apex, Lightning Components, Data Modeling, Acceptance Testing, Salesforce Platform Events, REST APIs
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, Acceptance Testing
Experience
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.
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.
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.
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.
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.
Education
2011 - 2016
Bachelor's Degree in Computer Systems Engineering
Palestine Polytechnic University - Hebron, Palestine
Certifications
NOVEMBER 2020 - PRESENT
Salesforce Certified Application Architect
Salesforce
NOVEMBER 2020 - PRESENT
Salesforce Certified Data Architecture and Management Designer
Salesforce
SEPTEMBER 2020 - PRESENT
Salesforce Certified Sharing and Visibility Designer
Salesforce
FEBRUARY 2020 - PRESENT
Salesforce Certified Platform Developer II
Salesforce
OCTOBER 2019 - PRESENT
Salesforce Certified Platform App Builder
Salesforce
APRIL 2018 - PRESENT
Salesforce Platform Developer I
Salesforce
Skills
Libraries/APIs
Salesforce REST API, Salesforce API, jQuery, REST APIs, Gmail API
Tools
Git, Flow, Batch Apex, Process Builder, Salesforce Platform Events, Sublime Text, IntelliJ IDEA, Salesforce DX, Salesforce Marketing Cloud
Frameworks
Lightning Components, Visualforce, Play Framework, Bootstrap
Paradigms
Automation, Acceptance Testing, Asynchronous Programming, Management, B2B, DevOps, Agile
Platforms
Salesforce, Salesforce Experience Cloud, Salesforce SOQL/SOSL, Linux, MacOS, Visual Studio Code (VS Code)
Languages
Apex, Python, Java, SOQL, HTML5, Scala, C++, SQL, CSS, HTML, JavaScript
Storage
Salesforce Commerce Cloud
Other
Salesforce Lightning, API Integration, Salesforce Apex, Omni-channel, Data Modeling, Apex Triggers, Email, MavensMate, Controller, Triggers, Integration, Sharing & Visibility, Architecture, Aura, Computer, Projects, Lightning Web Components (LWC), Salesforce System Administration, Apex Classes
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