Senior Engineer, FullStack, Retail Media/AdTech Solutions (m/f/d)

Hidden Jobs; United States; Hybrid; USD 102,000 - 148,000; Full time

Benefits offered by this job

Remote-friendly setup

Cologne base collaboration

Job summary

Hidden Jobs is seeking a senior fullstack engineer to design and build scalable retail media and adtech services. The role sits in a Cologne-based engineering group and supports the entire customer journey with a strong emphasis on performance and reliability.

You will mentor peers, contribute to architectural decisions, and work across product and data teams to deliver campaign management and measurement capabilities in a remote-friendly environment.

Qualifications

• Senior fullstack engineer with strong frontend depth and several years of experience.
• Hands-on background in retail media, adtech, or high-traffic environments.
• Proficiency with modern web frameworks and backend service development.
• Understanding of campaign delivery, audience targeting, and ad measurement.
• Strong CI/CD, observability, and code quality practices.
• Senior IC role within an expert engineering career track.

Responsibilities

• Design and develop fullstack services and frontend applications for retail media and adtech.
• Build advertising experiences integrated into the customer journey with focus on performance and reliability.
• Collaborate with product, data, and platform teams on campaign management and targeting.
• Contribute to scalable, low-latency, maintainable adtech architecture.
• Mentor engineers and uphold quality through code reviews and testing.

Skills

Senior fullstack engineer

Frontend depth

Web frameworks

Backend service development

CI/CD

Observability

Code quality

Job description

Role overview

This is a senior fullstack engineering position dedicated to retail media and advertising technology solutions. The role sits within an established engineering organization based in Cologne, Germany, operating at an expert career level within frontend and fullstack development. The work centers on building scalable systems that connect advertisers with on-site retail audiences and support commercial growth across digital channels.

Responsibilities

• Design and develop fullstack services and frontend applications that power retail media and adtech products
• Build advertising experiences integrated into the customer journey, focusing on performance, reliability, and usability
• Partner with product, data, and platform teams to deliver campaign management, targeting, and measurement capabilities
• Contribute to architectural decisions that balance scalability, latency, and maintainability across the adtech stack
• Mentor fellow engineers and uphold engineering quality through code review, automated testing, and clear documentation

Requirements

• Several years of experience as a senior fullstack engineer with strong frontend depth
• Hands‑on background in retail media, adtech, e‑commerce platforms, or comparable high‑traffic environments
• Proficiency with modern web frameworks alongside backend service development
• Understanding of core advertising concepts such as campaign delivery, audience targeting, or ad measurement
• Solid grasp of engineering practices including CI/CD, observability, and code quality standards
• Comfort working in a senior individual contributor role within an expert engineering career track

Benefits and work setup

• Permanent full-time position scheduled at 40 hours per week
• Remote‑friendly engineering setup with a Cologne, Germany base
• Senior role aligned with an expert software engineering job profile