Jobs at Djinni

The company is looking for a Generalist Technical Artist – Playables Engineer with strong game design intuition and a passion for creating engaging interactive experiences.

This role focuses on building, iterating, and polishing HTML5 playable ads where gameplay, visuals, and interaction come together seamlessly. The ideal candidate combines technical art expertise with lightweight coding skills and a strong understanding of what makes games feel fun, responsive, and satisfying.

 

Core Responsibilities
 

Own the visual execution and interactive feel of short-form game experiences by combining:

• Optimized 2D and 3D art creation
• Lightweight game-focused coding
• Strong understanding of gameplay mechanics and player experience
• Rapid prototyping and iteration workflows
  
   

Key Responsibilities
 

Technical Art & Animation

• Create and optimize 2D/3D assets for playable ads
• Work with Blender, Photoshop, and After Effects
• Handle:
  • Model editing and cleanup
  • Asset optimization
  • Materials, lighting, scale, and pivots
  • Exporting game-ready assets such as GLB files and textures
• Animate UI, gameplay feedback, VFX, and characters
• Integrate visuals into HTML5 playable pipelines
• Ensure strong visual quality while maintaining mobile performance
   

Gameplay & Interactive Development

• Use AI tools and agentic workflows to rapidly create gameplay systems, animations, assets, and interactive experiences
• Write, modify, and debug JavaScript / TypeScript to:
  • Control gameplay behavior
  • Tune timing, pacing, and feedback
  • Connect visuals with interaction logic
  • Create a satisfying polish and game feel
• Work with AI coding assistants and modern creative development tools
• Contribute to rapid prototyping and AI-assisted game development pipelines
• Experiment with emerging AI technologies for game creation and interactive content
  
   

Required Qualifications
 

• 3+ years of experience in Technical Art, Game Art, Playables, or Interactive Design
• 3+ years of hands-on experience with Blender creating game-ready 3D assets
• 2+ years of experience building interactive HTML5 playable ads using web-based game frameworks
• Experience within the mobile gaming industry
• Strong experience with:
  • HTML5
  • JavaScript / TypeScript
  • Node.js
  • Pixi.js
  • Three.js
  • GitHub
• Strong understanding of game mechanics, game feel, player feedback, and gameplay polish
• Experience creating mobile game animations, UI animations, VFX, and gameplay feedback
• Experience using AI tools, agentic workflows, and AI coding assistants

• Understanding of mobile optimization and lightweight playable ad performance constraints
   

  Nice to Have

• Unity or Unreal Engine experience
• GLSL or custom shader experience
  
   

Why Apply?
 

This is an exciting opportunity to work at the intersection of gaming, creativity, and emerging AI technologies. They are looking for someone who is passionate about building engaging interactive experiences, experimenting with new tools, and pushing the boundaries of playable content creation.
 

If you enjoy combining art, gameplay, and technology to create experiences that players instantly connect with, they would love to hear from you.

About the Role

We are expanding our team and looking for a DevOps Engineer to join our RnD department. You will be responsible for building, maintaining, and optimizing our infrastructure, ensuring high availability and performance of services across multiple internal systems. This is a great opportunity to work on high-load projects, improve reliability, and contribute to scalable architecture solutions.

Who We Are

Our RnD department is a key driver of innovation in the company, consisting of multiple teams that develop CRM systems, marketing tools, CMS, payment solutions, and internal platforms. We focus on automation, scalability, and performance, building systems that support business growth across multiple products and regions.

Why Join Us?

• You’ll work on high-load, scalable infrastructure supporting critical business systems.
• You’ll have the opportunity to design and improve DevOps processes, including CI/CD, monitoring, and cloud infrastructure.
• We use modern technologies and cloud solutions, with a strong focus on automation and reliability.
• You’ll collaborate closely with backend developers, DevOps engineers, QA, and architects.
• We encourage knowledge sharing, and continuous improvement of processes and tools.

Requirements

Must-Have:

• 2+ years of experience as a DevOps Engineer.
• Strong hands-on experience with Kubernetes, including creating and maintaining Helm charts.
• Deep understanding of Docker and Docker Compose, experience building service images.
• Experience with cloud platforms such as AWS and DigitalOcean.
• Experience building and maintaining CI/CD pipelines (GitLab CI, GitHub Actions).
• Experience with database setup and clustering (PostgreSQL, MySQL, MongoDB).
• 3+ years of experience with Linux administration.
• Experience deploying and supporting PHP applications (php-fpm, Roadrunner).
• Experience configuring and optimizing web servers (Nginx, Traefik) and working with Cloudflare.
• Experience with monitoring and logging stack: Prometheus, Grafana, ELK.
• Scripting skills for automation (Python, Bash).

Nice-to-Have:

• Experience with EKS or managed Kubernetes services.
• Experience with ArgoCD or GitOps approaches.
• Experience designing and maintaining High Availability architectures.
• Experience with Infrastructure as Code (Terraform, Ansible).
• Understanding of cloud security best practices.

Responsibilities

• Maintain and improve the company’s infrastructure and DevOps processes.
• Ensure high availability, stability, and performance of services.
• Investigate and resolve production incidents.
• Develop and maintain monitoring, logging, and alerting systems.
• Organize and improve backup and disaster recovery processes.
• Collaborate with development teams to optimize deployment and infrastructure workflows.
• Participate in planning and designing system architecture and environments.

Benefits

• 18 business days of paid vacation + public holidays compensation.
• Insurance Fund of the company.
• Partial coverage of professional courses.
• Coverage of sick leaves, sports activities, and English language courses.

Location: Remote (Europe)
Experience Level: 5+ years

About the Project
We are looking for a Senior Backend Developer (close to Architect level) to design and build core backend services for the ORA platform. The role is focused on secure cloud integration using KMIP and Barbican, with strong involvement in cryptography, Kubernetes, and open-source technologies.

Key Requirements

Must have:

• Senior-level experience in backend development with Java, Golang, or Python
• Proven hands-on experience in crypto-related projects (clearly visible in CV)
• Strong understanding of cryptography, including TLS and data encryption
• Practical expertise with Kubernetes (infrastructure and management layers)
• Experience working with OpenStack
• Solid background in unit and integration testing
• Experience designing and maintaining distributed systems and core backend services
• English level: Upper-Intermediate / Advanced (C1+)

Nice to have (at least one of):

• Experience with KMIP and key management systems
• Knowledge of Barbican or similar solutions
• Understanding of cloud convergence and ORA architecture
• Experience with microservices scalability and performance optimization
• Familiarity with open standards and open-source integrations

Tech Stack
Java, Golang, Python, Kubernetes, OpenStack, Unit Testing, Integration Testing

Responsibilities

• Design and develop core backend services for ORA
• Integrate with KMS via KMIP (e.g., Barbican, Ceph)
• Build and manage Kubernetes-based infrastructure (CRDs, operators, controllers)
• Implement secure communication using TLS and encryption mechanisms
• Collaborate with architecture and infrastructure teams
• Develop and maintain unit and integration tests
• Participate in architectural decisions and provide technical leadership

Senior Python Engineer (AI-driven Recommendation Platform, iGaming domain)

About the Product

We are developing an AI-powered performance optimization platform for online casinos and sportsbooks. The solution helps operators improve key business metrics by increasing player engagement and loyalty through personalized recommendations and predictive analytics.

The platform collects and processes player behavior data across multiple systems, builds detailed user profiles, and generates actionable insights, including:

• identifying players who misuse bonus programs without long-term retention
• detecting patterns of risky or excessive gaming to support responsible play
• recommending relevant games and activities based on user preferences and behavioral history

You will join a team building scalable recommendation systems, working with large volumes of data, and implementing ML-driven personalization to enhance user experience within iGaming products.

Requirements

• 5+ years of backend development experience with Python
• Strong foundation in mathematics, statistics, or computer science
• Hands-on experience with FastAPI, Django, or Flask
• Solid knowledge of data structures, algorithms, and distributed systems
• Experience with SQL and NoSQL databases (PostgreSQL, Redis, DynamoDB, MongoDB, etc.)
• Practical experience with Kafka or RabbitMQ and asynchronous architectures
• Cloud experience with AWS (Lambda, S3, RDS, SQS, etc.)
• Experience designing and maintaining high-load, scalable systems
• English level — B2 or higher

Nice to Have

• Experience with recommendation systems, data analysis, or ML-based personalization
• Understanding of data pipelines and ETL processes
• Experience with Kubernetes, Docker, and CI/CD pipelines
• Familiarity with Elasticsearch and monitoring/visualization tools (Grafana, Kibana)

Responsibilities

• Design and develop scalable backend services for AI-powered recommendation systems
• Collaborate with data scientists and ML engineers to deploy models into production
• Optimize data storage, processing, and retrieval for large-scale user datasets
• Ensure system reliability, performance, and scalability
• Take part in architectural discussions, code reviews, and mentoring
• Contribute to new features aimed at increasing player engagement and retention

Tech Stack

Python, FastAPI, Django, Flask, Kafka, RabbitMQ, PostgreSQL, Redis, DynamoDB, AWS (Lambda, S3, RDS, API Gateway, CloudWatch), Kubernetes, Pandas, NumPy, SQLAlchemy, Celery, Elasticsearch, Prometheus, Grafana.

Company
The company specializes in lead generation within the iGaming domain, primarily through SEO-driven solutions. They work on long-term client projects and are currently expanding their internal development team.

Position Overview

We are looking for a Lead / Senior Full-Stack Engineer who operates at a true senior / lead level — not by years of experience, but by depth of expertise and ownership.

This role is for someone who:

• takes full ownership of complex systems
• makes architectural decisions
• builds scalable solutions (not just features)
• sets and raises engineering standards within the team

Location & Format

• Remote
• EU time zone required
• Full-time, long-term cooperation

Language Requirements

• English — required for daily communication
• Strong English is a significant advantage

Team & Projects

You will join a stable team working on long-term lead generation platforms.

This is not a task-execution role. We expect you to:

• take ownership of complex technical decisions
• improve architecture and system performance
• raise the overall engineering bar within the team

Tech Stack

• PHP (Symfony)
• WordPress
• JavaScript
• HTML / CSS

Key Requirements

WordPress (must-have, advanced level)

• Experience building complex, large-scale WordPress systems (not content websites)
• Hands-on experience with WordPress Multisite (production)
• Strong experience with custom plugin development, including:
  • OOP
  • Composer / autoloading
  • Typed properties
• Experience with:
  • custom database structures
  • custom caching strategies (not plugin-based)
  • advanced use of WP_Query
  • improving developer & admin tooling

👉 If your experience is mostly theme customization or plugin usage — this role is not a fit.

PHP (strong senior level required)

• 5+ years with modern PHP (8+)
• Ability to design abstractions, libraries, and internal frameworks
• Experience with:
  • phpcs / phpcbf
  • custom sniffs OR PHPParser / AST
  • reflection & introspection
  • DTOs, Value Objects, clean architecture principles

Frontend / CSS

• Strong modern CSS skills (must-have)
• Understanding of browser rendering, layout, and performance

Performance & Optimization (critical)

• Deep understanding of Core Web Vitals
• Real experience with performance optimization (not just tools/plugins)
• Ability to identify bottlenecks and design custom solutions

Mindset & Approach

We are looking for engineers who:

• think analytically and architecturally
• deeply understand systems, not just tasks
• challenge “working solutions” and improve them
• proactively raise engineering standards

👉 If you mainly execute tasks and rely on predefined solutions — this role is not a fit.

AI Usage

• AI is allowed, but must not be a dependency
• Strong preference for engineers with deep system understanding
• AI-generated communication is discouraged

Start Date

• ASAP

This is not a “build everything from scratch” role.
The main focus is working with legacy systems, understanding existing architecture, supporting ongoing development, fixing issues, and gradually improving the platform together with the team.

## Requirements
* Min. 5+ years of commercial experience with C# / .NET
* Good experience with legacy enterprise applications
* Experience supporting and improving existing systems
* Solid knowledge of ASP.NET / .NET Core
* Experience with SQL databases
* Frontend experience with Angular or React
* Understanding of APIs and microservices
* Experience with cloud environments is a plus (Azure or AWS)

## Nice to have
* Experience with Docker / CI/CD
* Experience with message brokers or distributed systems
* Understanding of modernizing monolithic applications
* Experience in enterprise or long-term support projects

## Responsibilities
* Support and maintain existing applications
* Analyze and fix production and business issues
* Develop new features in existing systems
* Participate in gradual modernization and refactoring
* Collaborate with product owners, QA, and other developers
* Write clean and maintainable code
* Participate in technical discussions and code reviews

Location: Remote /Ukraine/ Europe preferred
German language — B1-B2 level
English — good working level

Domain: iGaming / Gambling
Format: Product company
Experience: 5+ years

About the Company

We are an international product company operating in the gambling sector. Our platform delivers real-time personalization for casino and sportsbook products using advanced machine learning. The solution processes live behavioral, transactional, and contextual data to improve player engagement, retention, and overall performance for operators worldwide.

Our focus is on building production-grade ML systems that directly influence what users see in real time — from game recommendations to personalized content and promotions.

Role Overview

We are looking for a Senior Data Scientist to join a product-focused team working on real-time personalization and recommendation systems for iGaming platforms.

This is a hands-on role that combines modeling, experimentation, and close collaboration with engineering and product teams in a high-load, real-time production environment.

Main Responsibilities

• Develop ML-driven features for casino products using supervised learning (regression, ranking, classification)
• Maintain and improve existing recommendation systems in production
• Enhance models using gradient boosting and other supervised approaches
• Perform data cleaning, preprocessing, and feature engineering
• Design and maintain pre- and post-processing workflows
• Optimize training and inference pipelines for performance and reliability
• Integrate ML models into Airflow pipelines in a multi-tenant environment
• Adapt and configure the solution for different clients (tenants)
• Collaborate closely with product and engineering teams on experimentation and feature delivery

As Part of the Team You Will

• Work cross-functionally with data scientists, engineers, product owners, designers, and researchers
• Analyze large-scale datasets to extract insights for product and business decisions
• Propose, implement, and evaluate ML approaches to solve real business problems
• Support and evolve a recommendation solution used across multiple tenants
• Influence product strategy through research, experimentation, and data-driven insights into user behavior

Experience & Education

• 5+ years of professional experience in data science
• Degree in a quantitative field (Mathematics, Statistics, Computer Science, or similar)

Core Skills

• Strong proficiency in Python and SQL
• Hands-on experience with data processing tools (Pandas, Polars)
• Solid engineering skills for building and maintaining scalable ML systems
• Experience implementing observability in ML pipelines (metrics, logging, alerting)
• Knowledge of Docker and Kubernetes
• Strong analytical mindset with the ability to solve loosely defined problems
• Hands-on experience with supervised ML techniques, including:
  • Regression and ranking models (XGBoost, LightGBM, CatBoost, neural networks)
  • Feature engineering and model evaluation (AUC, NDCG, MSE, uplift metrics)
  • Personalization or recommendation systems
• Proven experience deploying ML models to production (near real-time or batch)
• Solid understanding of statistical methods (A/B testing, significance testing)

Nice to Have

• Production experience with large-scale recommendation systems
• Experience with Airflow, Valkey/Redis, FastAPI in production
• Familiarity with contextual bandits or reinforcement learning
• Experience with AutoML tools

Domain: Banking & Finance
Experience: 6+ years
Project Duration: June 1, 2026 – December 31, 2026
Format: Hybrid
Location: Kraków, Poland

About the Project

We are looking for a React Developer to join a team building modern digital solutions for an international financial services company.

The role focuses on developing responsive and user-friendly frontend applications, collaborating closely with product and design teams, and delivering high-quality user experiences in a dynamic engineering environment.

Responsibilities

• Develop modern and responsive frontend applications using React.js
• Prototype and iterate quickly on new features with a strong focus on usability and user experience
• Collaborate closely with product managers and design teams to improve and refine the user journey
• Integrate frontend applications with REST APIs and backend services
• Follow modern frontend development standards and best practices using JavaScript and CSS
• Create wireframes, mockups, and UI concepts using design and prototyping tools
• Contribute to code quality, performance optimization, and frontend architecture improvements

Requirements

• Strong proficiency in JavaScript, TypeScript, HTML5, and CSS3
• Hands-on commercial experience with React.js
• Good understanding of responsive design and modern UI/UX principles
• Experience integrating REST APIs and working with backend services
• Familiarity with state management solutions and component-based architecture
• Knowledge of modern frontend tooling and build systems
• Understanding of frontend performance optimization and debugging techniques
• Ability to work effectively in cross-functional teams
• Strong written and spoken English communication skills

Nice to Have

• Experience with LangChain
• Experience with LangGraph
• Familiarity with LangSmith
• Knowledge of ETL and data management tools

Tech Stack

• JavaScript
• TypeScript
• React
• HTML5
• CSS3
• REST APIs

Preferred Technologies

• LangChain
• LangGraph
• LangSmith
• ETL & Data Management Tools

Location

• Hybrid from Kraków, Poland
• Important: the client requires office visits in Kraków once per week

Recruitment Process

• Technical interview with external partner
• 1.5-hour technical interview with the end client
• Cultural fit interview

test task +1 tech interview + final cultural fit interview

"AQA - 5+ years (expert-level proficiency in JavaScript as the primary scripting language; working knowledge of Python or Java is a strong plus.)
deep, hands-on expertise with WebdriverIO (WDIO) as the primary automation framework. Experience with additional frameworks such as Cypress, Appium, Playwright, or similar is highly valued
proficiency with API testing tools such as Postman, REST Assured, or similar"

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field (or equivalent practical experience).
• 6+ years of professional experience in software quality assurance, with a strong focus on test automation.
• Expert-level proficiency in JavaScript as the primary scripting language; working knowledge of Python or Java is a strong plus.
• Deep, hands-on expertise with WebdriverIO (WDIO) as the primary automation framework. Experience with additional frameworks such as Cypress, Appium, Playwright, or similar is highly valued.
• Hands-on experience leveraging AI-powered testing tools and AI-assisted development tools to accelerate test creation, maintenance, and defect detection.
• Solid understanding of software testing methodologies across functional, regression, integration, performance, API, and end-to-end testing.
• Proficiency with API testing tools such as Postman, REST Assured, or similar.
• Experience integrating automated tests into CI/CD pipelines.
• Strong working knowledge of version control systems (Git).
• Excellent command of the English language, speaking, listening, reading, and writing, as this is an international company and English is the primary language of communication and documentation.

Preferred Qualifications

• Experience with performance and load testing tools (Locust, JMeter, k6, Gatling).
• Familiarity with containerization and cloud platforms (Docker, Kubernetes, AWS, Azure, or GCP).
• Experience testing AI/ML-based applications, including model output validation and prompt-based testing strategies.
• ISTQB or equivalent QA certification.

Nice to Have

• Familiarity with security testing fundamentals, including common vulnerabilities (e.g., OWASP Top 10), authentication/authorization testing, and secure API testing practices.
• Hands-on experience with web proxy and security testing tools such as Burp Suite, OWASP ZAP, Charles Proxy, or Fiddler for traffic inspection, request manipulation, and vulnerability discovery.

Core Competencies

• Excellent analytical and problem-solving skills with strong attention to detail.
• Proven ability to mentor junior engineers and drive quality standards across teams.
• Strong written and verbal communication skills in English, with the ability to clearly document test strategies, results, and defects, and to collaborate effectively with cross-functional, distributed teams.
• Ownership mindset and the ability to operate independently in a fast-paced, international environment.

Possess overall responsibility for the successful planning, execution, monitoring, control, and completion of projects according to the agreed scope, time, cost, and quality criteria.

A solid understanding of the web design process is crucial for this role.

Responsibilities:

Project Management:

- Manage project development from initiation to closure, within budget, timeline, and quality standards. This involves leading the product development team on the projects that typically last 2-3 years.
- Manage day-to-day operational aspects of projects, ensuring smooth progress and addressing challenges.
- Plan and manage project timelines and milestones, ensuring that tasks are completed on time and objectives are met.
- Identify and mitigate project risks to ensure steady progress.

Team management:

- Manage a web development team of backend and frontend developers, a designer, and a QA engineer. Effectively plan and manage the allocation of team members’ time on projects.

Stakeholders management:

- Manage stakeholder communication throughout the lifecycle of website development projects.

Quality management:

- Ensure that the project’s deliverables meet the defined quality standards and stakeholders’ expectations.

Required skills:

- Experience/strong knowledge of Agile, Scrum, Kanban.
Solid understanding of the SDLC.
- Strong knowledge of UX design and ability to guide design teams.
- Fluent in English with excellent communication skills.
- Strong presentational skills: proficiency in direct stakehoder communication and delivering project updates throughout different stages.
- Strong in people management, problem-solving, and decision-making.
- Initiative-driven with a proactive approach to improving project outcomes.

- Excellent self-organization, time management, and prioritization skills.

Availability to work GMT+2 hours (10 am to 7 pm).

What We Offer:

- A work culture built on mutual success, trust, and continuous growth;

- Competitive compensation with clearly scheduled salary reviews and raises;

- A high-performing project management team and an inspiring atmosphere of camaraderie;

- The opportunity to lead a talented team of top-tier developers and designers;

- Sports compensation to help you stay active and energized;

- Paid vacation and sick leave — because your well-being matters;

- Comprehensive health insurance coverage;

- A modern, comfortable office in the center of Lviv;

- An amazing team, warm atmosphere, and engaging corporate events.

Are you a Data Scientist with a love of LLMs, generative AI?

We are looking for a passionate Data Scientist to implement AI solutions aimed at achieving business goals.

This role offers the opportunity to work on cutting-edge AI adoption projects that helps to improve current business processes.

Skills requirements:
• Strong Python Experience (1 year +);
• Experience with LLM , Diffusion models (1 year +);
• Knowledge of Prompt engineering;
• Experience with Gen AI-related technologies such as LangChain and RAG;
• Experience with Neural Networks (Optional) ;
• Experience with NLP , Predictive analytics and Machine learning;
• Experience with Pandas;
• Experience with SQL, including experience with large datasets;
• Strong experience in statistics;

Key responsibilities:
• Develop AI agents that utilize LLM, RAG and langchain approach;
• Implement LLM and Diffusion models to boost business productivity;
• Utilize LLM (LLM Vision) to improve object detection, text classification and extraction;
• Create forecasting, recommendation, and classification models;
• Transform business challenges to AI applications;

We offer:

• Great networking opportunities with international clients, challenging tasks;

• Building interesting projects from scratch using new technologies;

• Personal and professional development opportunities;

• Competitive salary nominated in USD;

• Paid vacation and sick leaves;

• Flexible work schedule;

• Friendly working environment with minimal hierarchy;

• Team building activities, corporate events.

We're looking for a talented QA Automation Engineer to help us deliver reliable, high-quality products in the cybersecurity field.  You'll own the automation layer for our cybersecurity platform: designing test frameworks from scratch, running performance and load tests, and building realistic environments that mirror production. This isn't a "write test scripts and call it a day" role - you'll be shaping QA strategy and working deep in the stack.

What you'll do:

• Build and scale API & backend automation frameworks for a complex security platform
• Automate testing for detection, protection, and response workflows
• Design end-to-end test environments using Kubernetes (K8s)
• Own performance, load, and stress testing
• Embed automation into CI/CD pipelines alongside dev and DevOps teams

• Help define QA best practices and mentor engineers as we grow

   

What you bring:

• 3+ years in API/backend automation testing
• Strong hands-on with Postman/Newman, REST Assured, Playwright, or similar
• Performance testing chops (JMeter, Locust, k6)
• Experience with Kubernetes for test environment orchestration
• Cybersecurity product testing experience is required 
• Go programming experience - big plus
• Cloud (AWS/GCP/Azure) and GitOps familiarity is a bonus

What we offer:

• Competitive compensation based on your skills and experience
• Paid vacation, sick leave, and additional holidays
• Exciting projects with the newest technologies
• Accounting as a service

• Long-term employment

   

Our recruitment process:

•  Screening call (30 min)
• Interview with VP of R&D (45 min)
• Technical interview with QA TL (60 min)
• Reference checks

Timeline: We'll get back to you within one week of receiving your resume.

We are looking for QA engineer to test a client-server system

Requirements
• Student (3rd year or higher) or graduate of a technical field (Computer Science, Telecom, Electronics, etc.)
• Intermediate English level (reading documentation, written communication, basic spoken interaction)
• Logical and analytical thinking
• Basic understanding of how computers and operating systems work
• Motivation to learn, grow, and work full-time

⸻

Nice to Have
• Experience with Linux (basic terminal commands, file system navigation)
• Basic knowledge of computer networks (IP, ports, client–server)
• Experience with electronics, microcontrollers, or embedded devices
• Familiarity with Git or other version control systems
• Basic understanding of QA concepts (test types, testing levels)
• Any experience with Python (courses, labs, pet projects)

⸻

What We Offer
• Strong internal training and mentoring
• Professional environment with experienced QA engineers and developers
• Opportunity to work with a real hardware-based product, not just web apps
• Clear growth path in QA, including Automation
• Paid vacation and medical insurance
• Flexible 8-hour working schedule (can be combined with studies)
• Comfortable office within walking distance of central metro stations. 

Company offers:

• Competitive salary

• 8 hours working day (flexible working hours, and work from home)

• 20-day paid vacation

• Insurance

• Professional environment

• Office located in a 15-minute walk from Vokzalna, Universytet, or Olimpiiska metro stations

About company:

Johnson Controls is a global leader in smart building solutions, dedicated to creating safe, healthy, and sustainable environments. As the provider of the world’s largest portfolio of building technology, software, and services, we are at the forefront of innovative building management.

Our Intrusion Department specializes in the development of high-quality electronic security systems and components. Operating in Ukraine through our subcontractor in Kyiv, we work with both hardware and cloud servers, including AWS, as well as virtual machines.

On the client side, we utilize intrusion panels from top vendors such as Visonic PowerMaster, DSC PowerSeries, and Qolsys IQ, alongside a range of wireless technologies (PowerG, Z-Wave, Zigbee) and wired devices.

In addition, we offer User and Installer Applications for both iOS and Android, providing seamless integration and control for our customers.

Key Responsibilities:

• Ensure high quality of software products across all stages of development;
• Design, execute, and maintain test cases, test plans, and test scenarios;
• Perform manual testing of complex systems (backend, APIs, networking-related features);
• Analyze logs, identify root causes of issues, and collaborate closely with developers;
• Validate client-server interactions and network behavior;
• Participate in requirements analysis and provide early QA feedback;
• Contribute to improving QA processes and testing standards.

Required Skills & Experience:

• Strong experience as a QA Engineer (manual testing);
• Good command of English (Intermediate+ or higher);
• Solid understanding of software testing methodologies and QA processes;
• Strong logical and analytical thinking;
• Experience working with client-server architecture;

• Linux: confident use of basic commands, log analysis;
• Networking fundamentals: TCP/IP, UDP, REST, OSI model;
• Ability to troubleshoot issues across different system layers;
• High attention to detail and commitment to product quality;
• Ability to work independently and take ownership of testing areas. 

Technical Plus (Nice to Have):

• Hands-on experience with networks or network devices;
• Experience working with Linux-based systems;
• Experience testing REST APIs;
• Python for test automation or scripting;
• MySQL (basic queries for data validation);
• Experience with hardware testing, flashing devices, soldering;
• Understanding of QA metrics and reporting;
• Experience mentoring junior QA engineers.

Personal Qualities
• Proactive and open-minded;
• Fast learner with a strong problem-solving mindset;
• Strong communication skills. 

Company Offers:
• Competitive salary based on experience;
• Flexible 8-hour working day (remote / hybrid options);
• 20 days of paid vacation;
• Health insurance;
• Professional, international work environment;
• Opportunity to work with complex and interesting products;
• Office located within 15 minutes (if on-site). 

About company:

Johnson Controls is a global leader in smart building solutions, dedicated to creating safe, healthy, and sustainable environments. As the provider of the world’s largest portfolio of building technology, software, and services, we are at the forefront of innovative building management.

Our Intrusion Department specializes in the development of high-quality electronic security systems and components. Operating in Ukraine through our subcontractor in Kyiv, we work with both hardware and cloud servers, including AWS, as well as virtual machines.

On the client side, we utilize intrusion panels from top vendors such as Visonic PowerMaster, DSC PowerSeries, and Qolsys IQ, alongside a range of wireless technologies (PowerG, Z-Wave, Zigbee) and wired devices.

In addition, we offer User and Installer Applications for both iOS and Android, providing seamless integration and control for our customers.

We're looking for a Middle/Middle Strong Node.js developer with 3+ years of experience to join our team and contribute to an innovative project focused on transforming HR operations with AI. This is a fantastic opportunity to work on a platform that integrates with existing HR systems, handles a significant volume of employee requests, and automates various HR tasks, ensuring 24/7 personalized support across multiple communication channels.

Must have:

• Strong experience with TypeScript, Node.js, and PostgreSQL.
• Proven experience with AI/LLM integration.
• Solid understanding of backend architecture and API design principles.
• Product mindset with the ability to think beyond implementation details.
• Proactiveness and ownership mentality.
• Strong communication skills and ability to collaborate with cross-functional teams.
• Ability to work effectively in ambiguous environments and help define clear requirements.
• Experience working in startup environments.

• Upper - Intermediate or Advanced English communication skills.

   

Will be a plus:

• Experience with Microservices architecture;

   

Responsibilities:

• Develop and maintain high-quality backend services using Node.js and TypeScript.
• Design and implement robust integrations with AI/LLM models to enhance platform capabilities.
• Work with PostgreSQL to manage and optimize application data.
• Collaborate with cross-functional teams to deliver seamless and efficient HR solutions.
• Ensure the scalability, performance, and security of the platform.

• Participate in code reviews, contribute to architectural discussions, and drive continuous improvement.

   

 About the Project:

This intelligent HR automation ecosystem is designed to modernize workforce management by offloading high-volume administrative tasks. By syncing with internal directories and knowledge hubs, the system autonomously resolves nearly three-quarters of routine employee inquiries regarding compensation, corporate policies, and internal workflows. Beyond simple Q&A, it orchestrates end-to-end processes—from record updates to document generation—across global communication channels like Teams and Slack. The result is a 24/7 support layer that provides data-driven organizational insights while escalating high-priority cases to human experts.

Interview Stages

• 1-st stage - call with Recruiter
• 2-nd stage - Technical interview with our Senior developer
• 3-rd stage - Client interview