Tech Lead (f/m/d)

adjoe is a leading mobile ad platform developing cutting-edge advertising and monetization solutions that take its’ app partners’ business to the next level. Part of the applike group ecosystem, adjoe is home to an advanced tech stack, powerful financial backing from Bertelsmann, and a highly motivated workforce to be reckoned with.

Meet Your Team: Fraud Operations

Our Fraud Operations team tackles one of adtech's biggest challenges: industry reports suggest 25% of global mobile ad spend is fraudulent. As a specialized operational force within Anti-Fraud, we actively investigate, reproduce, and mitigate abuse to prevent fraud from impacting our partners' business.

At the core of our day-to-day work is rapid exploit analysis and telemetry forensics across Android and iOS platforms, dissecting device manipulation, hooking frameworks, and emulator-driven abuse. Partnering closely with core SDK and Backend teams, we query billions of daily events across our distributed data stores (Trino, ScyllaDB, DynamoDB) to isolate suspicious traffic anomalies in real time, translate complex attack vectors into actionable detection heuristics, and deploy pragmatic mitigations directly across our Go-based services. This means working hands-on with cutting-edge tech and adversarial forensics to continuously outsmart even the most creative tactics.

Your Mission & Who We Are Looking For:

• AdTech & Anti-Cheat Domain Expertise: You understand the mechanics of digital advertising (attribution, publisher monetization, traffic quality) or bring experience from adjacent anti-abuse environments like gaming anti-cheat. You will act as the escalation point for BI, Product, and Support, translating complex abuse patterns into concrete technical solutions.
  

• Reverse Engineering & Exploit Analysis: You have an adversarial security mindset. While our core SDK team develops production client libraries, you understand iOS and Android internals well enough to decompile binaries, understand and use hooking of APIs and work with frameworks to root/jailbreak devices (e.g., Magisk, Xposed, KernelSU, Dopamine), and reproduce emulator- or bot-driven exploits in a sandbox environment to find the root cause.
  

• Large-Scale Telemetry & Data Forensics: You can query and analyze billions of daily events across distributed databases (Trino SQL, DynamoDB, ScyllaDB). Using data analysis tools and LLM-assisted workflows, you quickly isolate anomalous clusters, model suspicious traffic patterns, and turn raw telemetry into actionable detection heuristics.
  

• Distributed Systems Observability & Profiling: You are comfortable working with high-throughput event pipelines. Leveraging Grafana, Kibana, and distributed tracing, you monitor system health, diagnose bottlenecks across Kafka and SQS queues, and verify that detection APIs maintain low-latency response times under heavy load.
  

• Technical Leadership & Team Enablement: You will serve as the technical lead for our new Fraud Operations unit within the Anti-Fraud Solutions team. Partnering with the Product Lead, you will drive technical strategy, conduct meaningful code and architecture reviews, and mentor engineers. We value clear communication and pragmatic decision-making over years of formal management hierarchy.
  

• Pragmatic Engineering & Rapid Mitigation: You are a hands-on engineer who can read, debug, and review Go microservices without needing to be a Go purist. Working alongside Backend, Mobile, and Data Science teams, you will prototype detection logic, deploy verified mitigation rules, and automate responses to emerging attack vectors.

🌎 We welcome applications from talent worldwide and provide relocation support to Hamburg, Germany for those ready to join our team.

What’s in It for You?

At adjoe, you’re not here to just close JIRA tickets, you’re helping build the infrastructure behind one of the most impactful platforms in adtech. The systems you work on will reach hundreds of millions of users and power billions of decisions every day.

• Go Big. Own projects with impact on 770M users and push adtech boundaries.

• Move Fast. Ship solutions multiple times a day, learn from results, and keep momentum.

• Be Direct. Solve problems openly and collaborate across teams.

• Thrive Together. Grow with a diverse, global team of people from over 40 different countries that learn from each other.

• Have Fun. Celebrate wins, enjoy daily victories, and bring your energy.

We welcome applications from people who will contribute to the diversity of our company.