adjoe

Senior Android Developer (f/m/d)

β€’β€’
3 months ago
Estimated salary
€5,153 – €7,674per month

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

Be the first to apply today

Description

adjoe builds the technologies behind mobile app growth and monetization; adjoe Ads is its programmatic in-app advertising platform serving 10 million daily users. In the User Experience team, this Senior Android Developer owns the core development and optimization of the adjoe Ads SDK, native Kotlin code that runs inside hundreds of publisher apps and participates in 120 million daily auctions. The role designs high-performance APIs to capture behavioral signals powering 50 billion daily ML predictions, optimizes for minimal battery and memory footprint, and maintains SDK reliability using observability tools. It also maintains CI/CD pipelines for reliable SDK delivery. Requires 8+ years of Android experience (or 3+ in SDK/library development) primarily with Kotlin.

Requirements

  • 8+ years of Android experience (or 3+ years specifically in SDK/library development), working primarily with Kotlin
  • Deep understanding of Android lifecycles, ProGuard/R8 and multithreading
  • Strong API design track record with strict backward compatibility and high-performance networking (gRPC, Protobuf, Wire, OkHttp)
  • Ability to design for minimal footprint, optimizing battery and memory usage
  • Experience with observability and data tools (Sentry, Kibana, AWS S3/QuickSight/Athena)
  • Hands-on experience with Gradle and GitLab CI for CI/CD

Experience Level

InternEntry LevelMid-levelSeniorLeadExecutive

Benefits

Relocation support to Hamburg, Germany
Work on high-impact products reaching hundreds of millions of users
Fast-paced environment shipping multiple times a day
A diverse, global team from over 40 countries

πŸ’° Net Salary Calculator

Tax class 1, no church tax
Gross Salary
€76,956/year
€6,413/month
Total Deductions
€30,540
40% effective rate
Net Salary (Take Home)
€3,868/mo
€46,416/year

Deduction Breakdown

πŸ›οΈ Income Tax€14,607
🏦 Pension Insurance€7,156
πŸ₯ Health Insurance€6,103
🫢 Care Insurance€1,674
πŸ“‹ Unemployment Insurance€1,000

🏠 Cost of Living in Hamburg

Monthly Essentials

Rent (1BR)
€1400
Groceries
€320
Transport
€75
Utilities
€240
Internet
€40

Lifestyle & Entertainment

Eating Out
€13
Gym/Month
€45
Coffee
€4
Beer (0.5L)
€4
Cinema
€12
Monthly Net Salary:€3,868
Comfortable Living:€2,130
Monthly Savings:€1,738 (45%)
πŸ’°

Strong savings potential: You could save €1,738 monthly, which is €20,856 per year.

πŸ’‘ These estimates are based on average costs in Hamburg. 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 €76,962 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

πŸ“ Life in Hamburg

πŸ‘₯
Population
1.9M
⭐
Quality of Life
8.0
πŸ‡¬πŸ‡§
English Friendly
8.0
πŸ’»
Tech Scene
7.0
🌍
International
8.0
πŸš‡
Public Transport
9.0
🚴
Bikeability
8.0
🌬️
Air Quality
6.0
🌳
Green Spaces
8.0
πŸš—
Car Free
7.0
ℹ️

About Hamburg

  • β€’Maritime heritage
  • β€’Strong economy
  • β€’Excellent infrastructure
🌀️

Climate

  • β€’Maritime climate
  • β€’Mild winters
  • β€’Cool summers
  • β€’Frequent rain
❄️Jan: 2Β°Cβ˜€οΈJul: 17Β°CπŸ“…Avg: 9Β°C
β˜€οΈ1650 sunshine hours/year
πŸ›‘οΈ

Safety

  • β€’Generally very safe
  • β€’Reeperbahn area needs caution
  • β€’Low violent crime
Overall:8.0
πŸ₯

Healthcare

  • β€’Excellent medical facilities
  • β€’UKE is renowned
  • β€’Good accessibility
Quality: 9.0Access: 9.0
🎭

Culture

  • β€’Elbphilharmonie
  • β€’Strong theater scene
  • β€’Musical capital of Germany
9.0
πŸŽ‰

Nightlife

  • β€’Reeperbahn
  • β€’Diverse scene
  • β€’Live music
8.0
🏞️

Recreation

  • β€’Alster lakes
  • β€’Port areas
  • β€’Planten un Blomen park
9.0
πŸ’°

Cost of Living

  • β€’Expensive but less than Munich
  • β€’Higher than Berlin
  • β€’Strong salaries
🏠 Rent (1BR center):€1400
⚑ Utilities:€240
πŸ›’ Groceries:€320
🍽️ Dining out:€20

Engagement

Views
0today
7 days0
all-time1
Applies
0today
7 days0
all-time0

Hamburg-based adtech company operating the world's #1 rewarded advertising offerwall (Playtime/Arcade) for mobile app monetization and user acquisition. Powered by AI and first-party data, processing ~6B API requests daily across 700M+ unique users. Part of the applike group, backed by Bertelsmann.

Relocation support provided
€per month
€2kthis job posts €5k – €8k€20k

Your situation in Germany

The default for anyone single, divorced or widowed.

Only changes the church tax rate β€” 8% in Bavaria and Baden-WΓΌrttemberg, 9% everywhere else.

Childless employees over 23 pay a higher Pflegeversicherung (care insurance) rate.