Sadan M. — Senior Ruby/Elixir Engineer with Data Engineering skills

Lead Architect, Mastercard Foundation

November 2016 -Present

• Designed and Implemented Microservices in Elixir, Python, and Ruby to yield desired functionality on data obtained from the database as JSON objects through REST controllers.
• Integrated and configured the Eureka server to establish communication across multiple microservices through feign client.
• Improved project code quality by SonarQube standards by rectifying over 800 bugs, vulnerabilities, and code smells.
• Gained substantive experience working in an Agile environment (SCRUM calls, Sprint tasks).
• Gathered and specified the project requirements using a user-centric approach.
• Designed the system architecture by the skillsets of the team:
  (Figma -> teleportHQ -> VueJS -> Vuex composition api -> firestore data converter -> firestore DB).
• Formulated data models to infuse functionality as desired by the clientâ€TMs business logic
• Mapped JavaScript objects to firebase using firestorm data converter.
• Designed & implemented the application controller layer to handle database requests, consume DOMs, and render dynamic content using Vuex composition API.
• Analyzed to ensure that the UI/UX design meets the established standards & recommended HCI design standards as well as Apple & Google UI guidelines.
• Conducted heuristics evaluation, usability testing, and human-centered design methodology
• The development process followed an agile, scrum, approach with weekly objectives & fortnightly sprints on JIRA.

Senior Software Engineer, Booking.com

November 2014 - October 2016

• As Backend Chapter Lead: Ruby/Elixir, GraphQL, SQL, AWS (Lambda, DynamoDB, RDS, KMS, SQS), Terraform
• As React developer working with Redux

Senior Engineer, Induction Healthcare UK

September 2012 - October 2014

• Write functional, unit, and integration tests for application quality assurance in Ruby and Python.
• Use version control tool Git and code storage tool Github for added application functionality.
• Complete database migrations with Ruby on Rails and ActiveRecord.
• Build bespoke application credit card forms and assure payment reliability with Stripe API.
• Integrate email functionality in applications by using Sendgrid.
• Lead team meetings to optimize the application creation cycle.

Freelance Contractor, Upwork/Elance

December 2007 - August 2012

• Worked as an independent contractor on web applications in Ruby and Python.
• Front End implementations in HTML/CSS and Javascript

Rocker Lister

Industry: Real Estate Marketing/ Photoweb
Responsibilities:

• Developing and maintaining all server-side network components.
• Ensuring optimal performance of the central database and responsiveness to front-end requests.
• Developed Node.js processes, including database schemas, as well as preparing reports.
• Implemented effective security protocols, data protection measures, and storage solutions.

Technologies: Angular JS, Node JS, Mailgun, Stripe, Express

B2BX Crypto Exchange

Industry: Blockchain/Crypto
Responsibilities:

• Set up server-side & Running diagnostic tests, repair defects, and provide technical support.
• Documenting Node.js & advancements in the code of Node.js.
• Investigate & review to enhance NodeJS code quality.

Technologies: Angular JS, Python, Node JS, Elixir as Microservice, Material UI, Typescript, PostgreSQL, Docker, AWS, Express

 Leader

Industry: Employee Tracking/ Performance
Responsibilities:

• Set up open-source with website’s server-side functionalities.
• Data Exchange between Server & Users & Integrated APIs.
• Created most of the back-end components and bound applications with third-party web services.

Technologies: Node JS (Nestis Framework), Angular (Ionic Framework), CI/CD Github, Pipelines, Multiple Languages, integrated Dutch, MySql, Maria DB

MasterCard 

Details: Apptimumlabs led architecture for the Master card Foundation helping them evolve tools to facilitate and provide a user-centric experience.
Responsibilities:

• Integrated and configured the Eureka server to establish communication across multiple microservices through feign client.
• Improved project code quality by SonarQube standards by rectifying over 800 bugs, vulnerabilities, and code smells.
• Worked in an Agile environment (SCRUM calls, Sprint tasks). Gathered and specified the project requirements using a user-centric approach. Designed the system architecture in accordance with the skillsets of the team: (Figma ->teleportHQ ->VueJS ->Vuex composition API ->firestore data converter ->firestore DB).
• Formulated data models to infuse functionality as desired by the client’s business logic Mapped JavaScript objects to firebase using firestorm data converter. Designed & implemented the application controller layer to handle database requests, consume DOMs, and render dynamic content using Vuex composition API.

Technologies: Microservices in Elixir, Python, and Ruby,  JSON objects with REST controllers.

 Booking.com 

Industry: Travel & Tour
Responsibilities:

• As Backend Chapter Lead: Ruby/Elixir, GraphQL, SQL, AWS (Lambda, DynamoDB, RDS, KMS, SQS), Terraform As React developer working with Redux.

Technologies: Ruby/Elixir, GraphQL, SQL, AWS (Lambda, DynamoDB, RDS, KMS, SQS), Terraform.