Working Student Java Fullstack Developer (m/w/d)

REWE digital

•

Cologne, Germany

•

2 months ago

Estimated salary

€5,293 – €7,716per month

Auto-estimated from similar roles, location, experience & market data. Actual pay may vary.

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Description

As a working student in the Store Task Management product team, you are directly involved in developing the applications the team owns. In the role of a software engineer you build new features together with colleagues and investigate and fix issues from live operation. You support Angular frontend development, contribute to Java Spring Boot backend microservices, and develop Python services and automation scripts. You also get exposure to DevOps topics with Kubernetes while working in an agile, Scrum-based team.

Requirements

Studying (business) informatics or a similar natural-science subject
Command of software development basics and object-oriented development (e.g. with Java)
Team player, eager to learn and showing initiative
Enjoys working with current technologies and has a passion for IT

Languages

German

C2 · Fluent

A1A2B1B2C1C2

Experience Level

InternEntry LevelMid-levelSeniorLeadExecutive

Benefits

Attractive compensation and discounted canteen meals

Flexible working hours without core hours and the option of mobile work to fit your studies

Employee discount of 5% at REWE and PENNY plus further discounts at toom and the DERTOUR Group

Full integration into the teams with intensive onboarding programmes

Possible cooperations for thesis work

Comprehensive health and sports offering

Company-wide networks such as the di.to LGBTIQ network and the f.ernetzt women's network

Admission to the future steps retention programme with exclusive events and a talent pool

💰 Net Salary Calculator

Tax class 1, no church tax

Gross Salary

€78,048/year

€6,504/month

Total Deductions

€31,043

40% effective rate

Net Salary (Take Home)

€3,917/mo

€47,005/year

Deduction Breakdown

🏛️ Income Tax€14,994

🏦 Pension Insurance€7,258

🏥 Health Insurance€6,103

🫶 Care Insurance€1,674

📋 Unemployment Insurance€1,014

🏠 Cost of Living in Cologne

Monthly Essentials

Rent (1BR)

€1050

Groceries

€290

Transport

€75

Utilities

€220

Internet

€40

Lifestyle & Entertainment

Eating Out

€13

Gym/Month

€45

Coffee

€4

Beer (0.5L)

€4

Cinema

€12

Monthly Net Salary:€3,917

Comfortable Living:€1,726

Monthly Savings:€2,191 (56%)

💰

Strong savings potential: You could save €2,191 monthly, which is €26,292 per year.

💡 These estimates are based on average costs in Cologne. Actual expenses vary based on lifestyle, neighborhood, and personal choices. "Comfortable living" includes rent, utilities, groceries, transport, and reasonable dining/entertainment.

Eligible for the EU Blue Card

A salary of €78,054 meets the EU Blue Card minimum of €45,300 (2026).

The EU Blue Card is a residence permit for highly qualified non-EU workers. It offers a fast track to permanent residency and allows family reunification.

Processing

4-12 weeks

Visa fee

€100

Requirements

University degree + Job offer

Also eligible: EU Blue Card (Shortage Occupation) (€41,042+)

Documents needed

Valid passport

Recognised university degree

Employment contract or binding job offer

Proof of salary meeting threshold

Health insurance coverage

Biometric passport photo

Explore visa & relocation guides

📍 Life in Cologne

👥

Population

1.1M

⭐

Quality of Life

7.0

🇬🇧

English Friendly

7.0

💻

Tech Scene

6.0

🌍

International

7.0

🚇

Public Transport

8.0

🚴

Bikeability

8.0

🌬️

Air Quality

5.0

🌳

Green Spaces

7.0

🚗

Car Free

7.0

ℹ️

About Cologne

•Media and TV hub
•Large student population
•Vibrant local culture

🌤️

Climate

•Temperate oceanic
•Mild winters
•Moderate summers
•Regular rainfall

❄️Jan: 3°C☀️Jul: 19°C📅Avg: 11°C

☀️1600 sunshine hours/year

🛡️

Safety

•Generally safe
•Moderate crime levels
•Carnival can be crowded

Overall:7.0

🏥

Healthcare

•Good hospital network
•University hospital
•Adequate services

Quality: 8.0Access: 8.0

🎭

Culture

•Famous cathedral
•Roman heritage
•Carnival tradition

8.0

🎉

Nightlife

•Famous for Kölsch beer
•Student bars
•Carnival season

8.0

🏞️

Recreation

•Rhine riverfront
•City parks
•Beer gardens

7.0

💰

Cost of Living

•More affordable than Frankfurt/Munich
•Balanced cost of living
•Good value for money

🏠 Rent (1BR center):€1050

⚡ Utilities:€220

🛒 Groceries:€290

🍽️ Dining out:€16

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Category:Full Stack Development

Job Type:Part-time

Experience:Intern

Posted:2 months ago

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REWE digital

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The largest IT unit within the REWE Group — one of Europe's leading retail and tourism cooperatives. With ~2,500 employees across 12 locations in 5 countries, REWE digital builds the digital infrastructure powering online grocery delivery, autonomous stores, fulfillment centers, payment systems, and checkout solutions for 85 million weekly customers. Their tagline: 'Your Home of IT.'

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