Fullstack Mobile Developer ( Kotlin, Java Backend)

ipracujzdalnie.pl; Rzeszów; Hybrid; PLN 150,000 - 230,000; Full time

Benefits offered by this job

Atractive salary

Remote work

Job summary

ipracujzdalnie.pl in Poland is seeking a Fullstack Mobile Developer to build modern digital financial products, focusing on Kotlin, Java, and backend services.

Join a team moving toward smaller, autonomous squads, with opportunities to use AI tools in development and collaborate across Product, Design, Architecture, Security, and Platform teams.

Qualifications

• Experience in building mobile applications for iOS and Android.
• Strong Kotlin and Java backend skills with Spring Boot.
• Experience with Kotlin Multiplatform.
• Ability to work across teams and rapidly learn new technologies.

Responsibilities

• Develop mobile features and shared business logic.
• Create backend services and APIs in Java/Kotlin.
• Work with cloud services, CI/CD, monitoring and production environments.
• Improve performance, reliability, security and user experience.
• Collaborate with Product, Design, Architecture, Security and Platform teams.

Skills

Mobile development

Kotlin

Java

Kotlin Multiplatform

Backend architecture

APIs & microservices

CI/CD

Production systems

AI in development

Mentoring

Cross-team collaboration

Tools

Spring Boot

CI/CD tooling

Cloud services

Job description

Our client, with 15 years of market presence, is a leader in providing innovative IT solutions focused on knowledge management and customer experience optimization. Its flagship product, the integrated Customer Experience tool - KMS Lighthouse, enables effective communication with customers and improves service quality while reducing operational costs. Specializing in data administration, the company offers solutions such as integration with social media, email, CRM, chatbots, product catalogs, surveys, and e-learning modules for agents. We are looking for individuals passionate about knowledge management, customer service, and IT specialists to join our client's team of experts, supporting the implementation of innovative solutions to significantly enhance customer experiences.

Fullstack Mobile Developer ( Kotlin, Java Backend)

location: Warszawa, Białystok, Wrocław, Łódź, Rzeszów, Poznań, Gdańsk, Katowice, Kraków, Lublin

Key Duties

• You will join a team developing modern digital financial products used by a large number of customers.
• You will work on mobile applications, shared business logic, backend services, and production systems.
• The organization is moving toward smaller teams with greater product ownership, wider code sharing across platforms, and practical use of AI tools in the development process.
• We do not expect knowledge of all technologies from day one. Important are technological curiosity, a practical approach, and the ability to learn quickly.

Scope of responsibilities

• Creating and developing features of mobile applications used by real users.
• Developing shared business logic for mobile platforms, mainly using Kotlin Multiplatform (KMP).
• Creating backend services and APIs in Java/Kotlin and Spring Boot.
• Working with cloud services, CI/CD pipelines, monitoring, and production environments.
• Optimizing performance, reliability, security, and user experience.
• Using AI tools to support development, testing, documentation, and problem analysis.
• Close collaboration with Product, Design, Architecture, Security, and Platform teams.
• Co-creating engineering best practices and mentoring other developers.
• Responsibility for delivering functionality from design through to production deployment.

Must Have

• Very good experience in creating mobile applications.
• Good knowledge of iOS and Android application architecture and their key components.
• Very good knowledge of Kotlin and modern mobile architecture patterns.
• Experience in creating production applications with emphasis on quality, performance and maintainability.
• Backend experience with Java and Spring Boot.
• Knowledge of APIs, microservices and event-driven systems.
• Experience with CI/CD, automated tests and production environments.
• Ability to independently take features from design to production.
• Very good communication skills and experience collaborating with multiple teams.

Cross-platform experience

• The strategic direction of development is Kotlin Multiplatform, enabling sharing of business logic while maintaining native quality of mobile applications.
• Experience with Kotlin Multiplatform will be a strong asset.
• Candidates with strong experience in other cross-platform technologies are also welcome.

Good To Have Skills

• Very good communication and teamwork skills.
• Ability to work effectively in a dynamic environment.
• Proactive approach and problem-solving orientation.
• Ability for systems thinking and analysis of complex problems.

Benefits Offered

• Atractive salary
• Remote work