Jobs at Djinni

We are a consulting company operating in the finance and cryptocurrency sector. We have an open remote position for a Customer Support Managers: German language. 

Job Details:

Employment Type: Unofficial employment (Temporary) 
Working Hours: Monday to Friday, 9 hours per day.
(Including a lunch break and two 15-minute breaks)

Responsibilities: Provide oral and written consultations to clients regarding any questions related to the company's operations. There are no outbound calls or sales involved; the line is exclusively for incoming calls.

Salary: paid to a cryptocurrency wallet. If you have not used this method before, we will guide you through the process.
For more details, we can discuss via phone call or online interview.

Junior JavaScript / NestJS Developer

Junior JavaScript Developer with experience in backend development using NestJS and Node.js. Skilled in building and maintaining REST APIs, implementing server-side logic, working with databases, and supporting existing applications. Familiar with JavaScript, NestJS, Git, and basic software development principles, including clean code practices and debugging.

Worked with API integrations, database queries, authentication flows, and application performance improvements. Comfortable collaborating in team environments, following technical requirements, and learning new tools and frameworks quickly.

Looking for an opportunity to contribute to a product-focused team, grow as a backend developer, and deepen expertise in JavaScript ecosystem and scalable backend development.

📍 Location: EU only
🕒 Full-time | Long-term project (initially 6 months+)
🕘 Working hours: 9:00–18:00 CET
 

We’re looking for a strong Senior NLP & Python Developer to join an innovative AI-powered healthcare product focused on clinical trial automation and protocol intelligence.

The product is a next-generation Clinical Trial Management System (CTMS) that uses AI to analyze complex medical protocols (100–400+ page documents) and transform them into structured, executable workflows for research sites and clinical operations teams.

You’ll work on advanced NLP/RAG pipelines, scalable backend architecture, and AI systems that must meet strict healthcare compliance and auditability requirements.

What you’ll work on

• Designing and optimizing RAG pipelines for medical protocol parsing
• Building AI-powered extraction systems using LangChain, LangGraph, LLMs, and VLMs
• Improving AI traceability, reproducibility, and deterministic outputs
• Developing scalable backend services with FastAPI and PostgreSQL
• Working with vector databases (pgvector) and embedding pipelines
• Implementing document classification and extraction workflows
• Enhancing observability, validation, monitoring, and testing
• Supporting validation-ready and compliance-oriented architecture
• Improving performance and scalability of AI/ML infrastructure

Tech Stack

• Python 3.14
• FastAPI
• SQLModel / SQLAlchemy / Pydantic v2
• PostgreSQL + pgvector
• LangChain / LangGraph
• Docker / Docker Compose
• Celery
• Redis
• RabbitMQ
• NLP / LLM / VLM pipelines

Requirements

• 5+ years of commercial Python development experience
• Strong experience with FastAPI and SQLAlchemy
• Deep knowledge of PostgreSQL (schema design, indexing, optimization)
• Experience with Docker and microservice architecture
• Hands-on experience with LangChain and RAG systems
• Experience with vector databases (preferably pgvector)
• Strong understanding of embeddings, prompt engineering, and AI orchestration
• Experience with Celery, Redis, RabbitMQ
• Practical experience with document extraction / NLP systems
• Experience working in regulated industries (healthcare, fintech, life sciences, etc.)
• Strong architectural and system-design mindset
• Upper-Intermediate+ English

Nice to have

• Experience with GxP or healthcare-compliant AI systems
• Experience with AI explainability and auditability
• Familiarity with Ruff, Poetry, pre-commit hooks
• Experience scaling AI-heavy platforms

Team

You’ll collaborate with:

• ML Architect
• Senior ML/Python Engineer
• Frontend Engineer
• QA Engineer
• BA & PM

This is a high-impact role where you’ll directly influence the architecture of a complex AI healthcare platform.

📩 If you have strong Python + NLP/RAG expertise and want to work on meaningful AI systems in healthcare — apply now.

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Middle Backend Develope to join a long-term product project.

You will become part of the Smart City ecosystem - a large-scale software product for the Middle East market. This is a fully agile, product-oriented environment with real users and a tangible impact on urban infrastructure.
 

Key Responsibilities:

• Develop and maintain robust backend applications using Node.js and NestJS in a monorepo and microservices environment.
• Embrace and operate within a T-shaped approach, being ready to extend expertise beyond backend tasks to ensure end-to-end delivery of features.
• Work with PostgreSQL (AWS RDS) and Redis to design, implement, and optimize database and caching solutions.
• Develop and maintain integrations with various AWS services including SQS, S3, Lambda, IAM, System Manager, EC2, and EKS/ECS for cloud-native applications.
• Contribute to containerization and deployment processes using Docker, including building images and pushing to registries, implementing and maintaining CI/CD pipelines using GitLab runners.
• Implement and configure monitoring and observability using Prometheus and Grafana to ensure system health and performance.
• Collaborate closely with stakeholders and other developers to understand business requirements, translate them into high-quality technical solutions that meet those needs.
• Troubleshoot and debug backend issues, optimizing code to enhance performance and maintainability.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.
• Stay current with the latest technologies and best practices, and promote continuous learning and self-development within the team. Mentor other team members, providing guidance and sharing your knowledge.

Qualifications:

• Minimum of 2 years of experience in backend development with a focus on Node.js, NestJS, and related technologies.
• Knowledge or experience in Frontend development (specifically Next.js) is a significant plus.
• Knowledge or experience with automated tests (integration, E2E) is a significant plus.
• Willingness and mindset to work in a T-shaped model, contributing to various stages of the development lifecycle.
• Familiarity with microservices architectures and monorepo environments.
• Experience with PostgreSQL (AWS RDS), Redis, and backend data management.
• Knowledge of AWS services including SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Understanding of Docker and CI/CD pipelines, with some experience using GitLab runners.
• Familiarity with monitoring tools such as Prometheus and Grafana.
• Ability to document backend designs and processes clearly.
• Strong problem-solving skills and attention to detail, with a drive to create high-quality, performant code.
• Ability to work both independently and as part of a team in an agile environment.
• Good communication skills, with the ability to interact professionally with team members and stakeholders.
• English at Upper-Intermediate level and above.

What We Offer:

• Competitive salary.
• A collaborative and innovative work environment.
• Professional development opportunities.
• The chance to work on exciting and challenging projects.
• A supportive company culture.

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Middle Fullstack Developer to join a long-term product project.

You will become part of the Smart City ecosystem - a large-scale software product for the Middle East market. This is a fully agile, product-oriented environment with real users and a tangible impact on urban infrastructure.

Key Responsibilities:

• Develop and maintain solutions using Node.js, NestJS, React, and Next.js.
• Build and manage microservices and monorepo environment architectures on the backend.
• Design, implement, and optimize database solutions using PostgreSQL (AWS RDS) and caching with Redis.
• Work with various AWS services including SQS, S3, Lambda, IAM, EC2, and EKS/ECS to build scalable and efficient cloud-based solutions.
• Contribute to containerization and deployment processes using Docker, including building images and pushing to registries, implementing and maintaining CI/CD pipelines using GitLab runners.
• Utilize state management tools like Zustand or similar, and integrate frontend applications with backend services using TanStack (React Query) or other data-fetching libraries.
• Ensure UI/UX consistency by leveraging component libraries such as PrimeReact or similar and building reusable components.
• Implement monitoring and observability for applications using Prometheus and Grafana to ensure system reliability and performance.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.

• Stay current with the latest technologies and best practices, and promote continuous learning and self-development within the team. Mentor other team members, providing guidance and sharing your knowledge.

   

Qualifications:

• Minimum of 3 years of experience in backend and frontend development with a strong focus on Node.js, NestJS, React, Next.js, and related technologies.
• Experience with microservices architectures and monorepo environments will be a plus.
• Proficiency in PostgreSQL (AWS RDS), Redis, and backend data management.
• Familiarity with AWS cloud services including SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Understanding of Docker, CI/CD pipelines, and experience with GitLab runners.
• Experience with frontend state management libraries (e.g., Zustand) and data-fetching tools like TanStack (React Query).
• Familiarity with component libraries such as PrimeReact or similar, and a working knowledge of React hooks.
• Ability to document architectures, designs, and processes clearly.
• Excellent problem-solving skills and attention to detail, with a passion for creating high-quality, performant code.
• Ability to work effectively both independently and as part of a team in an agile environment.
• Good communication skills, with the ability to interact professionally with team members and stakeholders.

• English at Upper-Intermediate level and above.

   

What We Offer:

• Competitive salary.
• A collaborative and innovative work environment.
• Professional development opportunities.
• The chance to work on exciting and challenging projects.
• A supportive company culture.

Join us in delivering excellence through agility and innovation!

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.