Working Student – Backend Developer & Data Detective (AdTech)

TL;DR

Working Student – Backend Developer & Data Detective (AdTech): Support development and maintenance of scalable backend services and data analytics for mobile advertising platform with an accent on Go services, SQL queries, and partner integrations. Focus on building data pipelines, optimizing queries, improving data quality, and collaborating with BI teams.

Location: Hybrid in Hamburg with 3 core office days

Company

Leading mobile ad platform developing cutting-edge advertising and monetization solutions, part of applike group ecosystem with financial backing from Bertelsmann and advanced tech stack.

What you will do

• Support development and maintenance of backend services using Go
• Write SQL queries for data analysis
• Assist in building and maintaining data pipelines and integrations
• Collaborate with BI and data teams to deliver insights
• Help improve data quality, validation, and monitoring processes
• Document technical solutions and data workflows

Requirements

• Currently enrolled in Computer Science, Data Science, or related degree program
• Experience with backend language (Node.js, C#, Java) and strong interest in Go
• Track record of past projects to demonstrate
• Very good proficiency in SQL (joins, aggregations, query optimization) and relational databases (PostgreSQL, MySQL)
• Familiarity with REST APIs, backend concepts, cloud platforms (AWS, GCP, Azure), Git, and CI/CD
• Analytical mindset, attention to detail, solid communication, and teamwork skills

Culture & Benefits

• Hybrid setup with 3 core office days and flexible hours to fit studies
• Many vacation days, in-house gym with fitness classes, mental health support via EAP
• Central Hamburg office with Alster Lake view, top equipment, snacks, drinks
• Regular team and company events, hackathons, social gatherings
• Hands-on experience, code reviews from seniors, potential for full-time growth