Position: Lead Java Engineer for HighLoad/BigData project | SM
Company: Xenoss
Experience required: 5y
English level: upper

**Required skills**

— Team leading experience 4+ years
— Good understanding of SLDC/Scrum
— Professional Java experience 7+ years
— OOP/design patterns proficiency
— Experience building complex systems
— SQL/NoSQL database experience
— MongoDB experience
— Familiar with AWS EC2
— Advanced Linux user
— Docker/Kubernetes experience
— Good spoken and written English

**As a plus**

— Familiarity with Adtech ecosystem is a big plus!
— Familiarity with Aerospike
— Familiarity with Clickhouse
— Devops-related experience

**We offer**

— Unlimited work-from-home option
— Flexible working hours
— 3 weeks of paid vacation and 2 weeks of paid sick-period
— Senior team and challenging projects
— Long-term employment
— Zero bureaucracy
— Covering costs of professional events and English lessons
— Opportunity to choose the equipment you like (MacBook, as you wish)
— Various snacks, tea, coffee, and fresh fruits in the office

**Responsibilities**

You’ll be leading the team of qualified developers building the platform for mobile apps and games advertising. Working out a million requests per second and petabytes of data monthly to find the best audience to advertise to. You’ll be starting the new project under the advisory of Xenoss architects aiming to build the solution using state-of-the-art approaches in the high-performance systems area.
No legacy, just building a great new thing.

**Project description**

**The technology stack:** Java 15, AWS, Docker, Kubernetes, MongoDB, Aerospike, Clickhouse.

**Project**
The market problem project solves is reaching the right audiences with the right communication in order to show ads only to the users that will be interested in the product advertised. Building the quality software for that goal is still a challenge for the industry: advertisers should only pay for effective ads and users should see no spam.
Using modern data science and big data processing the project will be finding the right audiences in order to achieve the goal of showing mobile games/apps advertising to the people who might like it. The project will be handling the petabytes of data and about 1 million requests per second. The project itself is a true high-tech that will let you open your potential as a software developer, will teach you to build solutions that deal with an extreme load effective way, and will give you the unique experience that will allow you to grow as an engineer.

**Client**
A well-established company located in the USA working in the area of user acquisition for mobile game/apps developers and publishers. Working the market for many years they have reached hundreds of millions of capitalization.