Middle/Senior Ruby Engineer IRC283970

Description
Founded in 2007, this pioneering technology created a new model for the advertising industry. Today, the Project rebranded in 2020. Our work impacts what millions of people read, watch, and buy, and we’re looking for people to help us tackle that responsibility with creativity and focus. It is the world’s largest independent sell-side advertising platform. Publishers use our technology to monetize their content across all screens and formats including CTV / streaming, online video, display, and audio. Our tech fuels billions of transactions per day!

 

About the team:

The Demand Solutions (DS) team is responsible for growing spend to the project supply via our Curator and Clearline product offerings. We own various parts of the engineering stack for these products including user interfaces, APIs, and our real time distributed systems responsible for ad delivery. The DS engineering team works closely with adjacent engineering, product, data science teams to design, build and execute end-to-end product features and engineering improvements.
 

Requirements:
– 3+ years of relevant work experience in software development
– A strong understanding of asynchronous programming
– Experience building RESTful APIs with programming languages such as Ruby and Python
– Proficiency writing unit tests
– Linux experience
– Postgres or other Relational DB experience with SQL and Table design
– A strong understanding of algorithms, data structures, and an ability to recognize the business and technical trade-offs between different solutions
– Experience with development and CI tools like git, a build management system like Jenkins, and Jira
– Strong English language verbal and written communication skills
– Shifted working hours. Be present from 1 pm tilll 9pm EEST timezone
 

Nice to have:

– General Advertising Technology experience, ideally with header bidding technologies in a production environment
– Exposure to MVC patterns in production
– Experience building UIs with JavaScript libraries such as React
– Typescript

 

Job responsibilities:
– Design, build, test and maintain efficient, reusable, and reliable Ruby code
– Integration of data storage solutions
– Integration of user-facing elements developed by front-end developers with server-side logic
– Identify bottlenecks and bugs, and devise solutions to these problems
– Help maintain code quality, organization and automation
– Collaborate with QA and front-end developers to deliver end-to-end solutions.

Required skills experience

Ruby 3 years
REST API 3 years

Required languages

English B2 - Upper Intermediate
Python
Published 16 December 2025
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