Full Stack Software Engineer (Java/Kotlin)

Teamtailor; Warszawa; On-site; PLN 100,000 - 130,000; Full time

Job summary

A leading fintech company in Warsaw is looking for a Full Stack Software Engineer to join their ambitious project focused on investment management and trading systems. The ideal candidate will have experience in backend development using Java/Kotlin, familiarity with frontend frameworks, and a passion for solving complex financial technology problems. The role emphasizes collaboration, innovation, and delivering exceptional user experiences.

Qualifications

• Experience in backend development with Java and/or Kotlin.
• Familiarity with frontend frameworks, especially React.
• Exposure to cloud infrastructure and automation tools.
• Prior experience in fast-paced or fintech environments.
• Collaborative and eager to contribute across the stack.

Responsibilities

• Design, develop, and maintain backend financial systems and trading platforms.
• Build user-facing interfaces and full-stack features using modern frameworks.
• Contribute to technical architecture decisions and code reviews.
• Focus on solutions that align with business goals.

Skills

Backend development with Java/Kotlin

Frontend frameworks (React)

Cloud infrastructure (AWS, Terraform)

Kubernetes

Tools

PostgreSQL

Clickhouse

Spring Boot

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.