Ernest Lachelier Tsamo

Worked in a team of full-stack developers as a full-stack developer

• Developing client side with Vue.js front-end framework
• Creating and consuming RESTful web services using NodeJS
• Developing admin dashboard with Symfony framework
• Using Redis for caching and webhooking
• Developing GitLab CI/CD pipelines
• Configuring Licode SFU/MCU (Erizo on client side and Nuve on server side) for WebSocket communication

• Designed and updated backlog
• Defined roadmap
• Implemented and tracked roadmap
• Supervised team of 9 developers:
• 2 in iOS team (1 senior and 1 junior)
• 2 in Android team (1 senior and 1 junior)
• 2 in backend team (1 senior and 1 junior)
• 3 in web team (1 senior and 2 juniors)
• Created and consumed RESTful web services using Django Rest Framework
• Created platform architecture on AWS (RDS MySQL for database, Route 53 for domain and all sub-domain names, AWS SES for notification system, AWS S3 + Lambda functions + AWS SQS for storage of all different partners music catalogs)
• Third party API integration :
• Payments: Stripe - MonetBil - CinetPay - ApplePay - PayPal
• Sms notifications and validations: Twilio
• Geolocated data: IpInfo
• Implemented a feature with AWS Lambda for DDEX ingestion.
• Wrote scripts for CI/CD.
• Implemented cache system using Redis.
• Implemented a new logging system that made it easier to track errors.
• ML model for songs quality and size compression using pytorch (torchaudio)

Worked with the Cobrowser Subscription and Shopping Cart Team

• Developed client-side applications using front-end framework Angular
• Created and consumed RESTful web services using Symfony
• Developed server-side applications using PHP and NodeJS
• Used Git for version control
• Used Husky for git hooks
• Used Xmpp and RabbitMQ for the communication between the different micro-services
• Deployed applications using Jenkins and bitbucket pipelines

• Conception of an API with Django Rest Framework for the Healing Market Place application which is a "doctor therapist marketplace" where the main features were: - create an account for the doctor/patient - log in - change password - manage the "forgotten password" - create appointment slots with patients - configure patient/doctor payment information - subscribe to the offer allowing doctors to appear in the app - pay for an appointment with a therapist - buy therapeutic products - publish therapeutic products pay for an appointment with a therapist - purchase therapeutic products - publish blog posts related to the therapeutic area - list blog posts - integrate Stripe - integrate Apple in-app purchase - integrate Twilio - integrate ApplePay
• Conception of an API with Django Rest Framework for the GasGuy application which is a "purchase and reservation of gas cylinders" application where the main functionalities were: - Create a seller / client account - Log in - Modify personal information all of those using allauth and simpleJWT - Define delivery time slots during the week - Define price types by type of gas - Locate in real time the deliverer during the delivery process - Pay for delivery using Stripe -Twilio integration to notify users in the app
• Creation of a bot for an e-commerce website with Symfony 5 using twig for the frontend for lucillesPearls and implementation of a decision support tool for inventory management using a machine learning model based on time series (studying the regression problem by adding time as the main analysis parameter), the objective being to optimize the store's inventory by knowing what to buy in what quantity at what time of the year.