Position: Senior Software Engineer
Category: Java
English level: intermediate
Years of experience: 3


looking for projects with highload

 Developed job search service based on Elasticsearch and DynamoDB. 
 Developed scalable ”save for later” service. 
 Developed file upload/view service (S3). 
 Worked on SPA frontend (typescript and reactjs). 

 Worked on the shipment tracking product (similar to Aftership and EasyPost) 
 Developed new tracking workflow which reduced external API requests by 20 times 
 Designed and implemented delivery estimates based on courier history data, top destinations, exceptions for past shipments, couriers comparison 
 Developed notification service 
 Developed tracking page where external users can see delivery statuses and estimated delivery time 
 Designed and implemented scalable bulk import/export which can handle millions of rows

 Worked on scalable real-time chat application 
 Developed presence service that keeps track of the online status of members 
 Developed one-to-one and group messaging service  Implemented messages encryption 
 Worked on activity feed for the social platform 
 Developed connections service (follower/followee) 
 Developed activity service with fan-out on read and fan-out on write functionality 
 Designed and implemented feed aggregation functionality 
 Developed ranking algorithms for the different feed scenarios 
 Worked on a product for Amazon marketplace product page rank and competitors analysis 
 Worked on a product for browser human-processes automation