Senior Full-Stack Engineer

About the role

CyberCube is seeking a Senior Full-Stack Engineer to join its Tallinn team. You will own end-to-end feature development across a modern React/TypeScript front-end and a Java/Spring back-end, shaping the architecture as the platform scales.

Key responsibilities

• Design, build, and maintain complex full-stack features from React components to Java services.
• Define service boundaries and drive architectural evolution.
• Integrate performance monitoring and optimisation into the development workflow.
• Leverage Claude Code as part of daily coding activities.
• Stay ahead of industry trends and influence product direction.

Required profile

• Proven track record delivering complex production features with full ownership.
• Strong expertise in React, TypeScript and state-management libraries such as Redux.
• Deep experience with Java, Spring Boot, Spring MVC and Spring Data JPA.
• Hands-on experience designing REST/OpenAPI APIs and working with relational databases and schema migrations.
• Solid understanding of core AWS services (S3, SQS) and containerised development using Docker.
• Comfort with both synchronous and asynchronous communication patterns (queues, messaging).

Required skills

• React
• TypeScript
• Redux (or similar)
• Java
• Spring Boot
• Spring MVC
• Spring Data JPA
• REST / OpenAPI
• Relational databases
• Schema migrations
• AWS S3
• AWS SQS
• Docker
• Kubernetes (optional)
• Helm (optional)
• AWS EC2 (optional)
• AWS RDS (optional)
• AWS EKS (optional)
• AWS IAM (optional)
• Kotlin (optional)
• i18n / multi-locale (optional)
• Legacy modernization (optional)
• Architectural migration (optional)