Jobs

Primary requirements:

· Higher (or incomplete higher) technical education;

· Experience in programming for Android from 2 years;

· Excellent knowledge of Kotlin, Android SDK

· Experience with:

- multithreading in Java

- Kotlin;

- Android architectural components

- Firebase;

- RXJava2;

- understanding of REST;

- understanding of OOP principles

· Knowledge of Googel approaches;

· Confident use of GIT, collaboration systems;

· Availability of applications posted on Google Play;

· Solid understanding of client-server application architecture;

· Knowledge of English at a minimum technical level, preferably spoken and written at an above-intermediate level.

Main responsibilities:

· Writing code according to technical specifications;

· Development of systems from scratch and mobile versions of company products;

· Interaction with the development team;

Working conditions:

· Bid;

· Working hours are flexible, Mon-Fri, from 9 to 18 or from 11 to 20

· Stable job in a successful IT company;

· Remote work;

Senior Kotlin Developer

Proficiency in Kotlin with 3+ years of hands-on experience in backend development;
● Experience with Quarkus, Micronaut, Event scheduling;
● Solid understanding of OOP, functional programming, and clean architecture principles;
● Experience with Spring Boot or other Kotlin-compatible frameworks;
● Familiarity with RESTful APIs, JSON, and web service integration;
● Good knowledge of databases: both relational (e.g., PostgreSQL, MySQL) and/or NoSQL (e.g., MongoDB);
● Experience with asynchronous programming and coroutines in Kotlin;
● Basic understanding of CI/CD pipelines, Git, and version control best practices;
● Unit testing and integration testing experience using tools like JUnit, MockK, or similar;
● Experience with Quarkus, Micronaut, Event scheduling;
● Upper-Intermediate English or higher.

Responsibilities:

● Develop and maintain scalable, reliable, and maintainable Kotlin-based applications;
● Collaborate with product managers, designers, and other developers to deliver high-quality features;
● Write clean, testable, and efficient code following best practices and coding standards;
● Participate in code reviews, architecture discussions, and contribute to technical decision-making;
● Debug and resolve issues in production and development environments;
● Integrate third-party APIs and services;
● Contribute to the improvement of development processes, tooling, and team productivity;
● Stay up to date with Kotlin ecosystem trends and propose relevant improvements or innovations.

Nice to have:
● Experience with Docker, Kubernetes, or cloud platforms (AWS);
● Familiarity with GraphQL;
● Knowledge of Android development is a plus;
● Understanding of microservice architecture;

Our Financial Claims project focuses on building a platform for processing problematic invoices. Our mission is to create a user-friendly and efficient tool for resolving financial issues. We prioritize reliability, scalability, and clean architecture. Our team culture values transparent communication, collaboration, and continuous improvement.

Responsibilities

— Develop backend services using Kotlin (Spring Boot)

— Design and implement REST APIs

— Work with relational databases (PostgreSQL), write optimized SQL queries

— Maintain existing codebase, participate in code reviews

— Take part in regular team meetings, architectural discussions, and planning

Required Skills

— 2+ years of commercial experience with Kotlin or Java, with a strong interest in working primarily with Kotlin

— Hands-on experience with Spring Boot

— Strong SQL knowledge, experience with PostgreSQL

— Experience designing and implementing REST APIs

— Understanding of microservices architecture principles

— Ability to write clean, maintainable code

— Analytical thinking and attention to detail

— English — comfortable discussing technical topics

Nice to Have

— Strong communication skills

— Experience with SAP, Kafka, gRPC

— Experience with Docker, Kubernetes

— Familiarity with OpenAPI (Swagger)

— Involvement in designing architectural solutions

How We Work

— Code reviews, pull request policy, CI/CD

— Communication in Slack / Teams, task management in Jira, documentation in Confluence

We offer

— High salary (settlement to euro)
— Full time employment as internal employee of Sixt TECH Ukraine
— People-oriented management without bureaucracy
— A challenging job where you can learn and grow
— Paid vacation — 25 calendar days
— Educational budget
— Medical insurance
— Both, gym and foreign language study

We are looking for a remote generalist senior backend engineer with experience in Java (and preferably Kotlin) to join our early team to build our product from zero to one. Your role will include projects working with other team members including building integrations into enterprise systems, scraping, contributing to systems to allows users to use LLMs to generate sales insights at scale, and scrape, processing & deriving insights from millions of public documents.

You might be a fit if you:

• Are a senior developer with Enterprise B2B SaaS experience or Big data processing experience in the JVM ecosystem and ideally Kotlin.
• Are excited to roll up your sleeves and work in all parts of the backend and have experience working in small teams & startups. Ideally have experience working in a fast-growing startup.
• Ideally experience with the following stack:
  • Kotlin (BE)
  • GCP
  • Google Cloud SQL for PostgreSQL
  • Firebase
  • Python
• Have experience with some of the following (not required):
  • Natural Language Generation
  • Enterprise API integrations
  • Prompt Engineering
  • Large Scale Web Scraping & Parsing

About the Client: 

Our customer is a leading provider of onboard retail technology and mobile solutions for the travel and retail industries. The company designs and builds digital products that transform how airlines, trains, and retailers manage in-motion sales, inventory, and customer experiences. 

We are forming a dedicated Kotlin Multiplatform (KMP) team to build a new cross-platform mobile application from the ground up — one codebase, two native experiences: iOS and Android. You’ll join a small, highly skilled Scrum team that owns the full delivery pipeline — from architecture and development to testing, optimization, and release.

Responsibilities:

• End-to-end development of high-performance mobile applications for both iOS and Android using Kotlin Multiplatform (KMP).
• Design and implement shared business logic and platform-specific layers to ensure native user experience and optimal performance on each platform.
• Architect the application using Clean Architecture / MVVM / MVI, ensuring modularity, scalability, and maintainability.
• Experience with device-to-device communication protocols, especially Bluetooth/BLE.
• Develop rich, responsive UI layers using Jetpack Compose (Android) and SwiftUI (iOS) where necessary, leveraging Compose Multiplatform when appropriate.
• Integrate with backend APIs (REST / GraphQL), manage data synchronization, caching, and offline capabilities.
• Optimize app performance, memory usage, and responsiveness for both platforms.
• Implement comprehensive testing: unit, integration, and UI tests across platforms.
• Configure and maintain automated build, test, and release pipelines (CI/CD) for Android and iOS using tools like GitHub Actions, Bitrise, or Fastlane.
• Participate in code reviews, technical discussions, and agile ceremonies, ensuring continuous improvement and delivery excellence.
• Collaborate closely with backend engineers, designers, and QA to deliver polished, high-quality user experiences.

Must-Have Skills:

• 6+ years of experience in mobile application development.
• At least 2–3 years of proven hands-on experience delivering production apps using Kotlin Multiplatform (KMP) for both Android and iOS.
• Deep expertise in Kotlin, including coroutines, flows, multiplatform libraries, and shared data management.
• Experience with Bluetooth/BLE.
• Strong understanding of platform interoperability — bridging shared Kotlin code with Swift / SwiftUI on iOS and Jetpack Compose on Android.
• Experience developing and optimizing native UI components for each platform.
• Solid understanding of mobile performance optimization (memory management, rendering, startup time, network performance).
• Experience integrating RESTful APIs or GraphQL using Ktor Client or Retrofit with offline caching (SQLDelight / Room).
• Experience with CI/CD for mobile (Bitrise, GitHub Actions, Fastlane, Jenkins) and mobile release processes (Google Play, App Store).
• Strong Git workflow and experience with agile development environments (Scrum / Kanban).
• Fluent in English, both spoken and written.
• Clear communication skills: being able to explain complex technical issues to non-technical stakeholders.
• Experience in offline-first architectures, synchronization logic, and push notifications.

Would be a plus:

• Experience of mesh networking protocols and device-to-device communication.

We’re building a brand-new Hotel Management System platform — bookings, rooms, guests, staff tools, and analytics.

The project is in the early development stage, and the team is being formed from scratch.

You’ll be working on:

• Building a mobile/tablet app using Kotlin Multiplatform + Compose
• Implementing UI/UX based on Figma designs
• Working with REST APIs and local data (Room / SQLDelight)
• Handling authentication, push notifications, and offline mode

We offer:

• A chance to join a real startup from day one (no fixed salary at the start)
• 0.2% profit share from future subscriptions
• An opportunity to grow into a core mobile developer at SvartDev

Requirements:

• Kotlin and Compose Multiplatform basics
• Understanding of architectural patterns (MVVM / Clean Architecture)
• Experience working with REST APIs and JSON
• Proactive attitude and willingness to learn
• Russian language required (all internal communication is in Russian)

Seniority level: Only very skilled candidates with a minimum of 8-10+ years of experience will be considered

Start: asap
Workload: full-time
Location: any

English: from B2Web-based (not Android) - frameworks Ktor and Spring Boot.
We are looking for 1-2 people.

Context:
Insurtech company offering a platform that helps property & casualty (P&C) insurers, reinsurers, MGAs (Managing General Agents), etc., make pricing/rating/underwriting decisions more intelligently. They use decision intelligence, predictive modelling, AI/ML, and analytics to turn fragmented or sparse data into actionable insights, reduce manual work, improve the accuracy of loss ratios/pricing, and speed up underwriting workflows

This is the first crypto wallet integrated with a current account.

In this fast-paced environment, you’ll be given complex banking and crypto problems to solve, develop and deploy.

As a Backend Engineer, you’ll be directly working with the product team. In this fast-paced environment, you’ll be given complex banking and crypto problems to solve, develop and deploy. 

 What we are looking for

• Experience with Kotlin
• Enjoy working with the modern backend stack (Kafka, PostgreSQL, Redis, GCP)
• Experience in FinTech/Crypto
• Ability to develop, test and deploy microservices to support our core business
• Ability to develop, debug, test, and deploy APIs

• Team players: Credit the team & Blame no one

   

 What will make you stand out

• 4+ years of experience as a Backend Engineer

• Experience working in FinCrime

   

 What you’ll be working on

• Develop the core banking and blockchain services
• Develop the mobile API that feeds our mobile apps and web

• Integrate with partners and services

   

 What you’ll get

• Competitive salary + stock options
• Private dental + health insurance
• The best tech for your job
• 30 days of paid holidays (excl. bank holidays)
• Option to work 100% remotely or come to the office - your choice!
• Ability to work abroad for 4 months a year

🔥 THIS IS A SENIOR/LEAD POSITION

Experience in FinTech and or crypto required

As a Backend Engineer, you’ll be directly working with the product team. In this fast-paced environment, you’ll be given complex banking and crypto problems to solve, develop and deploy. You are obsessed with our good architecture, efficiency, and resilience and want nothing but the best product for our customers.

Your speed, ability to deliver, and capacity to come up with the most elegant solutions will make you one of the pillars of our engineering team.

We want to revolutionise the FinTech and crypto industry. Create a new paradigm. And we need the best minds to do it 🧠 🚀

👀 What we are looking for

• Experience with Kotlin
• Enjoy working with the modern backend stack (Kafka, PostgreSQL, Redis, GCP)
• Experience in FinTech/Crypto
• Ability to develop, test and deploy microservices to support our core business
• Ability to develop, debug, test, and deploy APIs
• Team players: Credit the team & Blame no one

🤩 What will make you stand out

• 4+ years of experience as a Backend Engineer

• Experience working in FinCrime

   

🧑‍💻 What you’ll be working on

• Develop the core banking and blockchain services
• Develop the mobile API that feeds our mobile apps and web

• Integrate with partners and services

   

🤑 What you’ll get

• Competitive salary + stock options
• Private dental + health insurance
• The best tech for your job
• 30 days of paid holidays (excl. bank holidays)
• Option to work 100% remotely or come to the office - your choice!

• Ability to work abroad for 4 months a year

   

Interview Process

1. Hiring Manager Interview

2. Take Home Test

3. Technical Interview

4. Behavioural Interview

Kotlin-розробник (Junior / Trainee)

Ми шукаємо Kotlin-розробника, який хоче розвиватися та долучитися до створення нових продуктів із нуля. Якщо ти прагнеш рости разом із командою та працювати над реальними проєктами — ця можливість для тебе.

🔹 Обов’язкові вимоги:

• Впевнене знання Kotlin (курси, pet- або навчальні проєкти).
• Розуміння ООП та основ архітектури застосунків.
• Базові знання Android SDK або Kotlin MultiPlatform.
• Уміння працювати з REST API та JSON.
• Навички роботи з Git.
• MacBook для роботи.
• Готовність навчатися, адаптуватися та розвиватися в команді.

🔹 Буде плюсом:

• Досвід участі в pet-проєктах або хакатонах.
• Знання Coroutines, Flow, RxJava.
• Робота з базами даних (Room, SQLite, PostgreSQL).
• Досвід публікації застосунків або розгортання серверних сервісів.

🔹 Умови:

• Гнучкий графік роботи (приблизно 8 годин на день).
• Оплата двічі на місяць.
• Наставництво та підтримка досвідченої команди.
• Тестове завдання перед стартом співпраці.

Якщо ти шукаєш проєкт, де можна рости як розробник, отримувати реальний досвід і впливати на результат — приєднуйся до нас 🚀