Mathematical Software Developer (Python) - AirSlate

Job Title: Mathematical Software Developer (Python)
Job Location: Wroclaw
Job Listing URL: https://jobs.lever.co/airslate/d3e66a64-2894-443c-8135-31bd4c8cd620
Job Description: About airSlate
airSlate is a global SaaS technology company that develops no-code workflow automation, electronic signature, and document management solutions. Our award-winning products - SignNow, pdfFiller, DocHub, airSlate WorkFlow, Instapage, and US Legal Forms - serve over hundreds of millions of users and more than one million customers worldwide, helping organizations of every size digitize processes, improve efficiency, and transform how they work.

We’re in an exciting phase of growth and transformation, with teammates in more than 20 countries across three continents and main hubs in the United States, Poland, Romania, Ukraine and Philippines.
At airSlate, we’re building value for customers and a culture where growth and innovation go hand in hand. We’re looking for people eager to shape products, scale a company, and thrive in a fast-moving environment.

About the team
The PPC Development team builds and maintains software that supports pay-per-click (PPC) advertising across Google, Bing, and other major ad platforms. A key focus of the team is optimizing and automating the ad bidding process, including designing smart bidding algorithms and budget allocation optimizers.

In this role, you will design and implement these algorithms end-to-end, tackling large-scale challenges that directly impact company revenue and ad performance, while also contributing innovative ideas to enhance the team’s capabilities.
What you’ll be working on
Design and implement bidding algorithms that optimize CAC, CPA, CTR, and other performance metrics across ad platforms;
Develop mathematical models for bid optimization, budget allocation and other constraints;
Collaborate with ML team to prototype and productionize ML models for Ad bidding;
Continuously monitor and improve algorithm performance through A/B testing and statistical analysis;
Work with PPC managers and Marketing stakeholders to align business requirements with Ad bidding processes;
As part of PPC development team, participate in integration with Marketing engine platform and PPC tools development.
What we expect from you
Bachelor’s or Master’s degree in Computer Science, Applied Mathematics, Statistics, or related field. PhD is a plus;
Demonstrated multi-year experience as a Software Engineer, with a proven track record of delivering production-grade systems;
Deep understanding of probability, statistics, optimization, and linear algebra;
Solid knowledge of object-oriented programming (OOP) principles and software design patterns;
Strong programming skills in Python;
Experience with machine learning frameworks and familiarity with reinforcement learning concepts is a plus.
What helps you rock
Experience with Java or PHP is a plus;
Knowledge of digital advertising, PPC platforms, or programmatic bidding preferred but not strictly required;
Experience with machine learning frameworks and familiarity with reinforcement learning concepts is a plus.