Node.js Backend Developer

Backend Developer (Node.js)   for an international product IT company that provides a comprehensive suite of AdTech solutions for digital advertisers, publishers, and ad agencies worldwide. The company develops white-label platforms  as well as delivers a wide range of custom solutions and services designed to automate, optimize, and scale digital advertising.    

Products company: SSP, DSP, Ad Exchange platforms.

Main markets - Tier 1-2 

The technical team - up to 10people ( BA, PM, Team Lead, Back-end\ Front-end developers, QA)

Project stack: Node.js (backend), Angular. MySQL, Clickhouse,  Redis,  MongoDB,   Linux.

Locations/Offices - Kyiv, Lviv, Odesa, Mykolaiv, or remote.

 Requirements:

• At least 2 + years of backend development experience, with a strong focus on Node.js
• Deep understanding of asynchronous programming in Node.js .
•  Understanding of Event Loop, Streams, and Garbage Collection
• Knowledge or  experience with high-load systems
• Familiarity with SQL, NoSQL, and in-memory key-value databases for data storage and optimization;
• Knowledge of network protocols such as HTTP, TCP
• Expertise in identifying and resolving issues efficiently;
• Experience or understanding unit testing;
• Experience with Linux servers, handling basic administration tasks;

Will be a plus : 

• AdTech / OpenRTB 2.x/3.x (auctions, bid req/resp, schain, ads.txt/sellers.json);
• ClickHouse, Aerospike, Nginx; parallel/stream data processing;
• experience with high-load/distributed systems; Kafka or RabbitMQ;
• Upper Intermediate+ English level

Responsibilities:

• Write clean, efficient, and maintainable code following best practices
• Develop and maintain scalable backend services using Node.js 
• Debug and resolve issues in the backend systems
• Еxtend and refactor existing solutions;
• Work with SQL & NoSQL databases: schema design, query optimization, caching;
• Write and maintain unit/integration tests; participate in code reviews;
• Debug production issues in Linux environments and improve reliability;
• You will experience the most romantic challenges with the most amazing people!