Senior Software Engineer (Backend) for Retail Media/Ad Tech (m/f/d)

As a Senior Software Engineer (Backend), you will play a key role in developing our product and shaping our company. At this stage, every line of code, every architectural decision, and every optimization has a direct impact on our success. For example, you will design and build reliable, scalable features that solve real-world customer needs. If you're autonomous, enjoy solving software challenges, and care about making a real impact, this role is for you.

What You’ll Do

• Own & develop backend services that are core to our platform.
• Design, build, and optimize services in Go (OpenAPI, Docker, Kubernetes).
• Ensure reliability & scalability of high-performance 24/7 availability systems.
• Work with cross-functional teams (engineers & product) to ship impactful features.
• Make pragmatic decisions on tools, tech, and trade-offs to keep things lean & cost-effective.
• Optimize data-heavy applications using Kafka, BigQuery, PostgreSQL, and Redis.

What You Bring

• 3+ years proven experience building high-scale, production-grade software, ideally in AdTech or Retail Media.
• Hands-on expertise with Go, Python, Kafka, PostgreSQL, BigQuery, Redis, Kubernetes, and OpenAPI.
• Experience with distributed systems, concurrent programming, and event-driven architectures.
• Familiarity with cloud platforms (preferably GCP) and DevOps best practices.
• Understanding of API design, security, and system integrations.
• Bias for action: you focus on solutions, not endless discussions.
• Ability to work independently: you don’t wait for instructions; you take ownership.
• Excellent communication skills: explain complex ideas in simple, clear English.
• While we operate remotely, you must live in Germany and be eligible to work here.

Bonus Points for Experience With:

• React, Auth0, Sentry, Terraform, Temporal, Prometheus, Grafana.
• NoSQL and columnar storage.
• AdTech or Retail Media solutions.
• Retail or eCommerce use cases.

We are a small, international team of tech, retail, and media experts, united by a shared mission to reshape the future of retail media. Around half of us are engineers who love clean APIs, scalable systems, and building reliable infrastructure. The other half brings deep expertise in strategy, marketing, product, and business operations - many of us have worked at or with some of Europe’s largest retailers and adtech companies.

We’re product-driven, low-ego, and hands-on. We believe in clarity over complexity, and in building solutions that are not just powerful, but also genuinely helpful for our customers. We work remotely, collaborate closely, and celebrate progress - whether it’s shipping a new feature, solving a customer challenge, or having a good laugh together in our weekly calls.

Why You’ll Love Working With Us

🚀 Real Impact & Ownership: Work on projects that shape the future of Retail Media.

🌎 Remote-First Culture: Work from anywhere in Germany or join us in Berlin - your choice!

⚡ Pragmatic, High-Performance Culture: We focus on results, not process for process’s sake.

💡 Low-Meeting, Tech-Driven Environment: We value focused work over unnecessary meetings.

🎯 Cutting-Edge Tech Stack: Work with the latest technologies in AdTech & Retail Media.

We aim to make the hiring process respectful of your time, transparent, and meaningful. Here's what you can expect:

1. CV Screening
   We take a first look at your experience - focusing on relevant skills, tools you’ve used, and any domain knowledge in retail media, eCommerce, retail, adtech, or SaaS infrastructure.
2. Intro Call
   A 30-minute conversation to get to know each other. We’ll share more about the role, the team, and the company, and you can ask any first questions.
3. Home Task
   A well-scoped task to help us understand how you approach a technical challenge, structure your thinking, and make decisions.
4. Tech Call
   A deeper, hands-on discussion with your future teammates. We might go through your home task together, exchange on technical concepts and tools, and talk about what matters most to you in your day-to-day work.
5. Founders Call
   A final conversation with our founder - to get a feel for our culture, our mission, and the energy we bring to building something meaningful.

We believe hiring is a two-way street - and we’re just as excited to learn about you as you are to learn about us.