Senior FullStack Developer (Kotlin + React)

About the Role

We are looking for a Senior Fullstack Developer with strong backend expertise in Kotlin and Java, and solid understanding of frontend technologies. You will play a key role in stabilizing and evolving a B2B portal for the waste disposal industry, where clients order specialized boxes and tools for the disposal of toxic waste, car batteries, and more.

Your Responsibilities

• Lead application stabilization (First 3 months):

  • Resolving maintenance issues and performance bottlenecks.

  • Upgrade and manage dependency packages to ensure system stability.

  • Identify and fix security vulnerabilities, implementing best practices.

  • Optimize CI/CD pipelines using GitHub Actions/GitHub Runner.

• Drive feature development (From month 4 onwards):

  • Design and implement new features for the B2B portal.

  • Contribute to frontend development using React (nice to have).

  • Ensure scalability, reliability, and security of the platform.

  • Participate in architecture decisions, code reviews, and technical documentation.

Requirements

• Kotlin and Java – strong experience required.

• Terraform – experience with infrastructure as code.

• English – communicative level.

• React – basic knowledge

Nice to have

• React – more than basic knowledge (nice to have).

• Basic knowledge of Azure Cloud (nice to have).

• GitHub Actions / GitHub Runner – CI/CD experience.

We Offer

• MultiSport card

• LuxMed medical package

• Allianz group insurance

• Value-based work culture

• Flexible working hours and remote work options