JobCubby JobCubby
Sign up
GFT Technologies SE

Senior Fullstack Consultant (Java & React)

GFT Technologies SE Krakow, Lesser Poland Voivodeship, Poland · PLN 260K–PLN 333K/yr

IT Services and IT Consulting · 10,001+ employees

4 d ago
react Senior (5-10 yrs) Contractor Poland
Create a free account to apply — email only, no card. You can also save this posting or score it against your profile with AI.

Applying here? Try the free cover letter tool — paste this posting and your résumé, no account needed.

About the role

You will design and develop enterprise-grade frontend and backend solutions for large-scale financial services platforms. The role involves collaborating with cross-functional teams to deliver scalable, cloud-native applications using Java, React, and event-driven architectures.

What they look for

Java React TypeScript Spring Boot Microservices Kubernetes Apache Kafka GitLab CI/CD Redux Terraform REST APIs SQL Multithreading Agile Scrum Cloud-native

Requirements

Candidates must have 7+ years of professional software development experience in enterprise environments with strong expertise in Java 17+, Spring Boot, and React. Proficiency in cloud-native technologies, CI/CD pipelines, and distributed systems is essential for this role.

Full description

Type of contract: B2B contract

Salary range: 125 - 160 PLN/H

What will you do?

You will work on large-scale financial services platforms supporting investment banking operations and digital transformation initiatives in a highly regulated environment. The role combines frontend and backend development, cloud-native engineering, and collaboration with business and technology stakeholders to deliver scalable, resilient, and high-performing solutions.

Your tasks

  • Design and develop enterprise-grade frontend applications using React and TypeScript
  • Build and maintain backend services based on Java, Spring Boot, and microservices architecture
  • Develop and support cloud-native solutions deployed on Kubernetes platforms
  • Design and implement event-driven integrations using Apache Kafka
  • Create and maintain CI/CD pipelines in GitLab
  • Collaborate with business stakeholders, architects, and cross-functional Agile teams
  • Optimize application performance, scalability, and reliability
  • Contribute to technical design, code reviews, and engineering best practices
  • Support application modernization and process automation initiatives

Requirements

  • 7+ years of professional software development experience in enterprise environments
  • Strong expertise in ReactJS, Redux, TypeScript, HTML5, CSS3, and modern JavaScript
  • Deep understanding of React Hooks, Context API, Redux Toolkit, routing, and frontend performance optimization
  • Hands-on experience with Vite and/or Webpack
  • Strong experience with Java 17+ and Spring Boot 3+
  • Experience with Spring Security, Spring Data JPA, REST APIs, and microservices
  • Excellent knowledge of multithreading, concurrency, JVM tuning, and performance optimization
  • Practical experience with Apache Kafka and event-driven architectures
  • Experience with Kubernetes, Helm, and Terraform
  • Experience creating and maintaining GitLab CI/CD pipelines
  • Strong understanding of distributed systems, scalability, resiliency, and fault tolerance
  • Knowledge of SOLID principles, design patterns, clean architecture, TDD, and secure coding practices
  • Strong communication and collaboration skills
  • Experience working in Agile/Scrum environments
  • Openness to work hybrid from our clint's office (Kraków) 3 days a week

Nice to have

  • Experience with AI-assisted development tools such as GitHub Copilot or Microsoft Copilot
  • Experience with Oracle or PostgreSQL databases
  • Familiarity with Azure cloud services
  • Knowledge of Grafana, Prometheus, Splunk, Dynatrace, ELK, or OpenSearch
  • Experience with OpenAPI/Swagger and GraphQL
  • Strong testing background using JUnit 5, Mockito, TestContainers, Playwright, Cypress, or React Testing Library
  • Experience mentoring developers and contributing to engineering standards and architecture decisions

Similar roles