Fullstack Mobile Developer (Kotlin)
Offer summary

(Summary generated by AI based on the full job description)

The project involves developing modern financial products including mobile applications, backend in Java/Kotlin with Spring Boot, and business logic in Kotlin Multiplatform (KMP). Responsibilities cover feature creation, performance optimization, working with cloud, CI/CD, and use of AI tools during development. Required skills include knowledge of iOS/Android architecture, microservices, and APIs. The offer includes attractive salary and remote work option.

Fullstack Mobile Developer (Kotlin)

Company: TeamQuest Sp. z o.o.

from: 19 August 2026
to: 18 September 2026
26 000 - 32 000net (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:mid • senior
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

Kotlin
Spring Boot
Java

Optional technologies

Kotlin

Our requirements

  • 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.
  • 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.

Optional

  • 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

Your 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.

About the project

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.

Podczas rozmowy technicznej warto przygotować się do omówienia

  • Systemu rozproszonego, który kandydat zaprojektował lub znacząco przebudował.
  • Problemu ze skalowalnością lub wydajnością, który kandydat samodzielnie rozwiązał.
  • Systemu obsługującego bardzo duże wolumeny zdarzeń lub danych.
  • Poważnego incydentu produkcyjnego oraz zmian wprowadzonych po jego analizie.
  • Złożonej inicjatywy technicznej prowadzonej przez kandydata w ramach jednego lub wielu zespołów.
Company

What we offer

  • Atractive salary
  • Remote work

TeamQuest Sp. z o.o.

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)
26k–32k zł / mth. (B2B)
I apply to:
TeamQuest Sp. z o.o.
Warszawa, Masovian
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