Full Stack Software Engineer (Java/Kotlin)

Teamtailor; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

A leading fintech company in Warsaw is looking for a Full Stack Software Engineer specializing in Java/Kotlin. The role involves designing and maintaining backend financial systems and building user-facing features. Candidates should have experience in cloud infrastructure and be passionate about solving complex financial technology problems. Competitive compensation and a collaborative culture await the right individual.

Qualifications

• Experience in backend development with Java and/or Kotlin.
• Familiarity with frontend frameworks is a plus.
• Exposure to cloud infrastructure and automation tools.

Responsibilities

• Design, develop, and maintain complex backend financial systems.
• Build user-facing interfaces and full-stack features.
• Contribute to technical architecture decisions.

Skills

Backend development experience with Java

Experience with Kotlin

Frontend frameworks familiarity (React)

Cloud infrastructure knowledge (AWS, Terraform)

Exposure to Kubernetes

Strong communication skills

Tools

Spring Boot

React

PostgreSQL

Clickhouse

Job description

Full Stack Software Engineer (Java/Kotlin)

Join an ambitious fintech project transforming the future of investment management and trading systems. We're building scalable solutions to empower diverse financial products and unlock innovative opportunities.

Key Responsibilities

• Design, develop, and maintain complex backend financial systems, including trading platforms, asset management, ledgers, and integrations with external partners.
• Build user-facing interfaces and full-stack features using modern frameworks, collaborating closely with cross-functional teams.
• Contribute to technical architecture decisions, planning, and code reviews.
• Focus on solutions that align with business goals and deliver an exceptional user experience.

Tech Stack

• Backend: Java, Kotlin, Spring Boot, JVM-based microservices
• Frontend: React, TypeScript (occasionally)
• DevOps: Kubernetes, AWS, Terraform
• Data: PostgreSQL, Clickhouse

Requirements

• Experience in backend development with Java and/or Kotlin.
• Familiarity with frontend frameworks (React is a plus).
• Exposure to cloud infrastructure and automation tools (AWS, Terraform, Kubernetes).
• Prior involvement in fast-paced environments or fintech is highly valued.
• Collaborative and accountable approach, eager to contribute across the stack.

Culture

• Autonomous, adaptable, and open to learning new technologies.
• Passionate about solving complex problems in financial technology.
• Strong communication skills and a collaborative mindset.