Pocketbook

Our company is one of the world's largest manufacturers of multifunctional electronic reading devices based on E-Ink technology, as well as branded accessories for them. It is in the TOP-3 of the leading manufacturers of readers for reading around the world.

In addition, we provide the opportunity to purchase content in various formats for our devices on our website.

Our project has high traffic and a huge catalog of ebooks, as well as numerous integrations with both services and devices.

We have a very friendly big team and we always work for the team result. We have many plans for the near future - this is to expand the number of sites and catalogs on the current store, and update our code to the latest version of Magento 2.4 (PWA).

What we are looking for:

Professional in working with Magento 2.

You know Magento architecture well and use best practices.

You have experience in configuring, integrating and optimize Magento.

Good command of PHP 8, using OOP and SOLID principles.

Strong knowledge of MySQL.

You have experience with Elasticsearch, Redis, Varnish, RabbitMQ.

Experience with SOAP/REST APIs.

Specialist in   performance optimizing of web applications.

Experienced in automation testing.

You have experience with Docker.

You have an understanding of the work and settings of CI / DI.

You are responsible for your work and pay great attention to the quality of the code.

Are you looking for:

Using advanced technologies to create complex e-commerce systems.

Writing clean and tested code with high performance and extensibility.

Analysis of requirements, interfaces and API applications for integration solutions.

Develop complex integrations and modules from scratch.

Our company offers:

Vacation - 24 working days.

Paid sick leave.

Flexible work schedule.

Accountant.

English courses

Work in an office in Kyiv, as well as possible remote work.

(!)Please note: This position is open to EU-based candidates only.

Job title: Head of Engineering & Senior Solutions Architect

Role Type: Hands-on Leadership / Strategic

Focus: Architecture, Team Strategy, Backend/Cloud Core, IoT Integration

Role Summary:

We are looking for a Head of Engineering to take ownership of Ionnyk’s technical strategy. You will replace a key leader who balanced high-level architecture with hands-on implementation. You will oversee the entire stack—from the Cloud (GCP/Kubernetes) to the Backend (Kotlin/Spring Boot) and its interaction with our IoT devices. You will act as the bridge between business units, external hardware stakeholders, and the software team.

Key Responsibilities

• Technical Strategy & Leadership: Define the technical roadmap, gather needs from business units, and coordinate internal/external stakeholders. Define and lead the overall technical strategy for the engineering team.

• Architectural Oversight: Define and maintain the global solution architecture for our e-paper frame fleet. Ensure it is robust, scalable, and secure.

• Hands-on Development: Actively contribute to the core backend, utilizing Kotlin, Spring Boot, and complex patterns like CQRS/Event Sourcing.

• Security & Compliance: Act as the Security Officer/DPO, implementing security best practices across the infrastructure. Ensure the implementation and adherence to best practices in IT security.

• Infrastructure & DevOps: Oversee the GCP infrastructure, Kubernetes orchestration, and GitOps deployments via FluxCD.

• IoT & Firmware Strategy: Understand the interaction between the cloud and NRF5-based hardware (BLE, OTA updates, bootloaders) to guide hardware/software integration.

• Business Alignment & Solutioning: Gather requirements from various IONNYK business units, guarantee the implemented technical solutions meet business needs, and identify and propose adapted technical solutions to meet evolving business requirements.

• Coordination: Coordinate all internal and external technical stakeholders.

Required Competencies:

• Backend & Data: Expert in Kotlin (v1.9+) and Spring Boot 3.x. Deep knowledge of JPA/Hibernate and PostgreSQL. Advanced knowledge of Kotlin and Spring Boot 3.x for backend development.

• Architecture & Design: Expert in defining and designing REST API systems. Experience with 3-tier architecture, Hexagonal architecture (Ports & Adapters), and CQRS. Proficiency in architectural patterns like CQRS / Hexagonal is a strong asset.

• Cloud & DevOps: Advanced knowledge of Google Cloud Platform (GCP). Advanced experience with containerization (Docker) and orchestration (Kubernetes), including GitOps (Flux CD). Experience with CI/CD pipelines (GitLab CI).

• Frontend (Web): Advanced knowledge of React and TypeScript for modern web development.

• Security: Experience implementing OAuth2/JWT and managing security policies.

• IoT/Embedded Awareness: Familiarity with Bluetooth Low Energy (BLE) communication or embedded systems concepts is highly valued. Intermediate knowledge of Mobile Development stacks (React Native, Expo) and Embedded Systems (NRF5, BLE) to provide effective oversight.

​What’s in it for you:

• ​Strategic Impact: Direct influence on the tech roadmap and product evolution.

• ​Modern Stack: No legacy. Kotlin 1.9+, Spring Boot 3.x, K8s, and Hexagonal Architecture.

•​ Innovation: Work at the intersection of IoT, Art, and Cloud (E-paper tech).

​Ownership: Full autonomy over engineering culture and architectural standards.

​• Flexibility: Hybrid work model and focus on results, not micromanagement.

​• Package: Competitive salary and the best hardware for your setup.

We are looking for a Middle Backend Developer to join our product team and work on a long-term, technically interesting project. You will be involved in designing, developing, and improving backend services that directly impact the product and its users. We value clean architecture, thoughtful technical decisions, and continuous growth.

Required Skills & Experience:

• 4+ years of commercial experience in backend development
• Strong knowledge of PHP and Node.js
• Hands-on experience with backend frameworks (any PHP, Node.js, or other backend frameworks are welcome)
• Experience in building and maintaining RESTful APIs
• Practical experience with MongoDB
  • schema design
  • indexing
  • query optimization
• Understanding of backend architecture principles and best practices
• Experience working with version control systems (Git)
• Ability to write clean, maintainable, and readable code

• Understanding of asynchronous programming concepts

   

Nice to Have:

• Experience with popular frameworks such as Laravel, Symfony, NestJS, Express, Fastify, or similar
• Experience with SQL databases (MySQL / PostgreSQL)
• Familiarity with Docker and containerized environments
• Basic knowledge of backend security principles (authentication, authorization, data protection)
• Experience working on a product-oriented company or long-term projects

• Experience with automated testing (unit / integration)

   

What We Offer:

• An interesting and challenging product with real users and real impact
• A strong, friendly team and healthy engineering culture
• Opportunity to grow professionally, learn new technologies, and influence technical decisions
• Stable workload and focus on quality rather than constant “firefighting”

• Competitive compensation and transparent growth path

   

What We Appreciate

• Proactive mindset and ownership of results
• Willingness to learn and improve existing solutions
• Ability to communicate ideas clearly within the team
• Interest in building scalable and reliable systems

(!)Please note: This position is open to EU-based candidates only.

Job Description:

Middle/Senior Full-Stack Engineer

Role Type: Generalist / Execution & Support

Focus: Feature Development (Backend/Web/Mobile), Maintenance, Support

Role Summary:

We are looking for a versatile Full-Stack Engineer to handle the day-to-day development and maintenance of the Ionnyk ecosystem. You will step into a role that touches every part of our product: the mobile app used by clients, the web portals for administration/B2B, and the backend services. You will also play a crucial role in maintaining system stability and supporting our internal teams.

Key Responsibilities:

• Software Development (Full-Stack & Mobile): Develop, maintain, and implement RESTful Web Services using Kotlin and Spring Boot, leveraging JPA (Hibernate) and PostgreSQL with Flyway for database management. Build and maintain user-facing web interfaces using React, TypeScript, and Redux Toolkit. Maintain and evolve the mobile application using React Native and Expo, including handling BLE integrations for device communication. Manage third-party integrations (Stripe, HubSpot).

• DevOps & Infrastructure: Develop and maintain the GCP infrastructure, Kubernetes orchestration, and GitOps deployments via FluxCD. Assist with the integration and deployment process, demonstrating familiarity with GitLab CI/CD pipelines and Docker containerization.

• Technical Support & Tooling: Provide L2/L3 support, including analyzing bugs in the GCP console, and troubleshooting specific issues for the Customer Support team. Manage internal IT tools (Google Workspace, Slack, Scripts) to keep operations running smoothly.

• Code Quality: Adhere to best practices for code quality, testing, and continuous integration.

Required Competencies:

• Full-Stack Expertise:

• Expert in either Backend (Kotlin/Spring Boot) or Web Frontend (React/TypeScript) with Advanced skills in the other.

• Advanced knowledge of Kotlin and Spring Boot 3.x.

• Advanced knowledge of React (hooks, context) and TypeScript.

• Versatility: Willingness to switch between fixing a UI bug in React, debugging a Kotlin API endpoint, and analyzing a log in Google Cloud.

• Web/Frontend:

• Strong proficiency with React and Redux Toolkit.

• Familiarity with modern tooling: Vite, Tailwind CSS, and Material-UI (MUI).

• Mobile (React Native):

• Experience with React Native, Expo, MobX, and deploying to iOS/Android.

• Intermediate experience with State Management (Redux Toolkit or MobX).

• Data:

• Intermediate proficiency with PostgreSQL and comfortable with writing SQL queries.

• Familiarity with database migration tools like Flyway.

• Cloud & DevOps:

• Knowledge of Google Cloud Platform (GCP), Docker, Kubernetes, and CI/CD pipelines (GitLab CI).

• Basic understanding of Docker and continuous deployment practices.

• Nice-to-Haves/Bonus:

• Experience with Firebase Auth.

• Experience with Bluetooth Low Energy (BLE) libraries.

​What’s in it for you:

• ​Strategic Impact: Direct influence on the tech roadmap and the evolution of the Ionnyk ecosystem.

• ​Modern Stack: No legacy. Work with Kotlin 1.9+, Spring Boot 3.x, React, Expo, and K8s.

• ​Innovation: Build at the intersection of IoT, Art, and Cloud (E-paper & BLE technology).

• ​Infrastructure Ownership: Full autonomy over GCP infrastructure and GitOps (FluxCD) deployments.

• ​Flexibility: Remote or Hybrid work model with a focus on results, not micromanagement.

• ​Package: Competitive salary and the best hardware for your setup.

Зверніть увагу: до розгляду беруться лише кандидати, які наразі перебувають у Києві.

Junior QA Engineer (Manual Testing)

Шукаємо Junior QA Engineer у Києві (офіс+remote). Знаходження в Києві є обов'язковим. 

Вимоги:

• Вища освіта (технічна/економічна перевага)

• QA курси, знання QA теорії та SDLC

• Базові знання Linux, Bash, SQL- буде плюсом. 

Soft skills: уважність, відповідальність, усидчивість