Senior Full Stack Engineer (Kotlin/Java)

ZipRecruiter; Cologne (MN); Remote; EUR 85,000 - 100,000; Full time

Job summary

A leading tech company is seeking a Senior Full Stack Engineer to take on platform-level challenges using Kotlin and React. You will lead backend-first development, contribute to system improvements, and guide teams in a fully remote-friendly environment with competitive remuneration and ample growth opportunities.

Benefits

30 days’ vacation

Equity participation

Annual professional development budget

Modern equipment and ergonomic setup

GYM access options

Mobility support

Corporate discounts

Qualifications

• 5+ years of backend experience (Kotlin/Java).
• 3+ years of frontend experience.
• Strong system understanding.
• Clear, constructive communication.

Responsibilities

• Own backend-first development of shared platform services.
• Build and maintain modern UIs in React.
• Contribute to architectural improvements.

Skills

Backend experience

Frontend experience

System understanding

Mentoring mindset

Communication

Job description

Job Description

Senior Full Stack Engineer (Kotlin/Java) – Remote (Germany-based)

Are you a backend-leaning full stack engineer ready to take on platform-level challenges? Love Kotlin and React? Join a team building the services that power everything — from user authentication to analytics.

Your Impact:

• Own backend-first development of shared platform services in Kotlin.
• Build and maintain modern UIs in React (or Vue, with willingness to shift).
• Contribute to architectural improvements and system-wide initiatives.
• Lead by example in mentorship, collaboration, and delivery.
• Help drive cross-functional technical decisions across product teams.

What You Bring:

• 5+ years of backend experience (Kotlin/Java).
• 3+ years of frontend experience.
• Strong system understanding and fast onboarding capability.
• Mentoring mindset with clear, constructive communication.
• Comfortable driving decisions and shaping full-stack workflows.

Nice to Have:

• Familiarity with SHAPE UP development model.
• Startup or product-driven company experience.

Why Join?

• Remuneration up to €100 000.
• Fully remote-friendly environment with optional access to offices across Germany.
• Permanent contract with 30 days’ vacation.
• Equity participation through a company VSOP program.
• Modern equipment and ergonomic setup support.
• Annual professional development budget to support your growth.
• Optional perks including gym access, mobility support, and corporate discounts.
• A collaborative, international team culture that values ownership and innovation.

Interested? Apply today or get in touch to learn more.