Senior Programmatic Trader

Berlin, Bangalore, Remote
________________________
HelloI am
Willian
, Trading and Analytics Lead at Kayzen, and I am now looking for a Senior Programmatic Trader to join our team
But wait, you have not heard of Kayzen before?
Kayzen is a mobile demand-side platform (DSP) dedicated to democratizing programmatic advertising. We enable leading apps, agencies, media buyers, and brands to run programmatic customer acquisition, retargeting, and brand performance campaigns through its self-serve and managed service options. Built on the three core pillars of performance, transparency, and control, Kayzen powers the world's best mobile marketing teams with bespoke solutions that fuel business growth and deliver a competitive advantage. With an unprecedented scale of 160B+ daily ad requests from 1.6B+ unique users worldwide, we serve up to 1B+ ads per day in 180 countries. Kayzen is accessible through our APIs and user interface.

The Team
The Trading Desk team is responsible for creating growth through the management and optimization of mobile performance advertising campaigns for clients utilizing the managed service offering. The goal of the team is to deliver on the client's objectives through established or new trading best practices and communicate account status regularly and effectively with their CSM counterparts.

Why this role
Own and grow a portfolio of mobile programmatic campaigns (UA/RT/Brand), delivering CPA/ROAS targets while scaling FCT and protecting contribution margin. You'll pair deep trading skills with advanced analytics (SQL must have/Python desirable) and LLM-accelerated workflows to move faster than a traditional desk.

What you'll do (responsibilities)
Trading excellence

• Own end-to-end campaign delivery across multiple advertisers; hit KPI targets (CPA, ROAS, retention) and scale when unit economics allow.
• Build and execute testing roadmaps (optimization models, bids, budgets, frequency, creatives, geos, etc) to drive incremental lift.
• Manage pacing, budget allocation, and risk across an account book, proactively mitigating under-delivery
• Champion process improvements, author tools/queries, and mentor juniors to raise team throughput.

Analytics & automation

• Dive into log-level and aggregated data to diagnose performance; write production-grade SQL (joins, CTEs, window functions) and Python/pandas analyses.
• Design and interpret tests, translating findings into the Trading Playbook.
• Leverage LLMs (GPT/Claude) to automate recurring analyses (bid curves, cohort reads, anomaly triage), create data briefs, and draft experiments.

Cross-functional impact

• Partner with CSM/Sales on growth plans and QBRs; influence Product with crisp, quantified feedback; collaborate with Supply on inventory quality, etc.
• Work with DS/DA on model inputs, new testing hypothesis or model improvements, and with Product Support to quickly unblock delivery.

Since I am based in Argentina and other key product and customer success team members are located mostly across EMEA and India, we are open to a remote setup of this position. For optimal overlap with customers' time zones and internal teams your main working location should preferably be close to the CET time zone.

Requirements

• 3-5 years year of programmatic ad buying experience, mobile in-app DSP experience preferred
• Hands-on with MMPs (AppsFlyer/Adjust/Kochava/Singular), postback flows, fraud, and reporting tools.
• Data-driven decision making; comfortable building and modifying SQL queries (joins, CTEs, window functions a plus). Familiarity with BI tools.
• Nice-to-have: Python/pandas for ad-hoc analyses and light automation; experience is a plus but not required.
• Solution orientation and drive to succeed
• Communication: crisp written analysis and cross-team collaboration. Client-facing confidence is preferred

What do we offer?

• Exceptional career growth and learning opportunity
• A unique opportunity to be part of an experienced team of industry experts and entrepreneurs reshaping the AdTech space.
• Direct, day-to-day work experience with the leadership team.
• A fun, driven, and multinational team located across Germany, India, Argentina, Ukraine, Turkey, the UK and many more countries
• A flexible work-from-home arrangement
• A 500-dollar home-office setup budget
• A 1000-dollar annual learning and development budget