Jobs at Djinni

26 Lines Of Code is looking for an independent Middle Manual QA Engineer who is ready to take full ownership of product quality across web and mobile applications.

Requirements

• 3+ years of experience in Manual QA / Software Testing
• Strong understanding of the full QA lifecycle within SDLC
• Ability to independently design effective test coverage
• Hands-on experience creating test cases, checklists, and test scenarios
• Practical experience with functional, regression, integration, end-to-end, exploratory, and acceptance testing
• Experience testing web applications
• Experience testing mobile applications (iOS & Android) on real devices and cloud device farms (e.g., BrowserStack or similar)
• Strong API testing skills using tools such as Postman and Swagger
• Solid understanding of client–server architecture, data flows, and web communication protocols (HTTP, WebSocket, webhooks)
• Experience with risk-based and research-based testing approaches, including edge-case identification

• Strong analytical thinking, attention to detail, and ownership mindset

   

🎁 What We Offer:
Remote-friendly, full-time role with flexible working hours
21 vacation days + 5 paid sick days per year
Corporate English language courses
Supportive and professional team
A modern work environment with opportunities for growth
Involvement in large-scale and innovative outstaffing projects

📩 Interested? Send us your CV — we’re excited to get to know you!

Motion Designer (UA Creatives)
We are looking for a Motion Designer to create UA video creatives for paid channels: Meta, TikTok, YouTube.

Responsibilities:
- Creating and animating UA video creatives (6–30 sec)

- Animating text, UI elements, icons, simple characters

- Adapting creatives to different formats and placements

- Fast iterations and revisions based on feedback and performance metrics

- Close collaboration with marketing and the creative producer

Requirements
Must-have:

- After Effects — confident user (main working tool)

- Photoshop — basic level (asset preparation, minor edits)

- Understanding of UA creatives and performance-driven video

- Ability to create simple, clean, and highly readable animations

- Strong sense of timing, rhythm, and composition

- Working with text (hooks, CTAs, visual accents)

- Exporting videos for Meta / TikTok / YouTube

- Working with pre-made assets (PSD, Figma, footages)

Nice-to-have:

- AI tools for creative production (image/video generation, upscaling, voice, subtitles, etc.)

- Experience with mobile games or apps

- Understanding of A/B testing for creatives

- Basic editing and sound skills (cuts, transitions, music timing)

- Experience adapting creatives for different markets

We value
Data-driven mindset and creativity focused on results, not “beauty for beauty’s sake”

Ability to test ideas quickly and iterate without fear

Attention to detail and clean execution

Responsibility and realistic deadlines

🔹 Middle Python Developer (Backend)

This is a great opportunity to work with a stable team, contribute directly to product development, and grow professionally while working with modern technologies.

🔧 Responsibilities:

• Develop and maintain backend logic for web applications
• Design, build, and integrate RESTful APIs
• Work with PostgreSQL databases
• Ensure correct processing of static and media files using WhiteNoise
• Implement image manipulation tasks with Pillow
• Write clean, maintainable, and testable code
• Participate in code reviews, refactoring, and optimization

• Collaborate closely with frontend developers, QA, and other team members

   

✅ Requirements:

• 3+ years of commercial experience in software development
• Strong knowledge of Python and Django framework
• Practical experience with PostgreSQL and Docker Compose
• Familiarity with Pillow (image processing) and WhiteNoise (static file serving)
• Solid understanding of software development best practices

• English level B1+ (Intermediate) — ability to communicate within the team and work with technical documentation

   

✨ We Offer:

• Long-term cooperation with a stable product team
• Flexible work schedule and remote work opportunities
• Supportive and open-minded team culture

• Modern technology stack and well-defined processes

   

🛠 Recruitment Process:

1. Recruiter Interview
2. Test Task
3. Technical Interview
4. Offer

Join an amazing team at SerenityGPT led by the creator of Django Ninja. We use Gen AI for chat-with-your-data, customer support, self-service, data extraction, automation and other applications. We are both a product company and a consultancy helping companies with meaninful AI adoption and to become AI-native. More about us at docs.serenitygpt.com

We need a clear communicator who can understand the requirements by working directly with customers and implement them well and fast.

Our stack is Python, SQL, Django, git, docker. We are really AI-native ourselves when it comes to development.

Join Breeze as a Customer Support Specialist and be the first point of contact for our users. In this role, you’ll provide exceptional support to our users during the night shift (21:00–06:00 CET), contributing to user satisfaction, retention, and overall engagement with the product.

Who We Are:

Our mission is to provide access to tools for deep self-discovery. Our product, Breeze, empowers over 14 million users with:

• Self-discovery tests that help reveal your true essence.
• A personalized routine plan to help find daily happiness and foster useful habits.
• Gain clarity, foster gratitude, and find peace with daily journaling and self-reflection questions.

Our dedication has earned us a user rating of 4.6. We’ve been featured as one of Apple’s “New Apps We Love”.

Why You’ll Love Working With Us:

• Flexible Work Model: Work remotely, from our Warsaw office, or a blend of both — whatever suits you best.
• Generous Time Off: Enjoy 28 days of vacation, 12 personal days, and unlimited sick leave.
• Career Growth: We prioritize your career advancement with opportunities to enhance your skills and expand your impact.
• Psychological Support: We cover therapy or counseling sessions to support your mental well-being.
• Fitness Allowance: Stay active with financial support for sports-related activities.
• Language Courses: Improve your English skills with reimbursement for courses, tutors, books, and language apps.
• Supportive Team: Join a collaborative community of enthusiastic and ambitious professionals.

Your Role:

• Deliver top-tier customer support to users through email and various digital communication platforms.
• Effectively manage and resolve customer queries and complaints concerning the mobile application and subscription services.
• Identify and troubleshoot technical problems associated with the mobile app, escalating them to the appropriate team when needed.
• Supply product information, respond to product-related inquiries, and instruct users on utilizing the application most efficiently.
• Respond to app reviews, provide solutions, and address concerns to improve user satisfaction.
• Handle disputes and chargebacks, ensuring timely and effective resolution of issues.
• Collaborate with the product development and IT teams to enhance user experience based on user feedback.
• Monitor and record customer support interactions, identifying patterns and recurring issues.
• Contribute to the development and execution of customer support protocols to boost efficiency.

About You:

• Demonstrated experience in a customer service role or a similar position, preferably in relation to a mobile application.
• Superior verbal and written communication abilities.
• Robust understanding of subscription models and the functionalities of mobile applications.
• Familiarity with customer service software (Zendesk, Freshdesk, etc.), and tools.
• Ability to maintain patience and professionalism in high-stress scenarios.
• Excellent problem-solving skills and meticulous attention to detail.
• Proficiency in the English language and knowledge of additional languages are advantageous.
• Willingness to work on weekends, with Saturday and Sunday as regular working days and time off provided on weekdays.

Ready to make a meaningful impact through your talents and expertise? Apply now and join a mission-driven team dedicated to improving daily life for millions!

Phenomenon Studio is a full-cycle design and development company founded in 2019.
We help startups and small to medium-sized businesses build and scale products across Healthcare, EdTech, SaaS, FinTech, and Web3 industries.
Recognized with 30+ industry awards, we deliver high-quality solutions that combine creativity, technology, and business impact.

We’re seeking a proactive and relationship-driven Business Development & Partnerships Manager to help us expand beyond inbound leads. In this role, you’ll research new markets, open scalable long-term channels, and cultivate strategic connections with enterprise-level clients.

You’ll represent Phenomenon Studio at key industry events, build trust quickly both online and in person, and translate market insights into partnerships that drive sustained growth.

Team: Sales Team Lead, Account Executive, SDR

Requirements:

• 3+ years in business development, partnerships, or growth
• Proven track record of finding new business opportunities and launching new revenue channels
• Experience representing a company at conferences and industry events
• Strong networking and communication skills
• Strong negotiation & closing skills
• Fluent English (C1+)

Responsibilities:

• Research and explore new business opportunities.
• Build relationships with potential partners and enterprise clients.
• Attend industry events to represent the company and generate leads.
• Develop and execute account-based strategies.
• Support the Sales team with qualified opportunities

What we offer:

• Remote work format and flexible schedule
• Autonomy in work, opportunity to build processes, and grow within the company
• Individual development plan and annual performance review
• Workshops and playgrounds for continuous learning
• Compensation for subject-matter training
• Corporate English classes
• Access to IT Loyalty Club
• Accounting support
• 18 working days of annual leave
• 7 working days of sick leave and 7 working days of unpaid leave
• All national public holidays off

Recruitment process: Recruitment interview — Interview with the Head of Department — Final interview

We at King Group are engaged in the development and promotion of entertainment products for users around the globe. Having successfully launched and scaled to profitability a number of new products within the last two years, we are on the constant run for new highs. Due to the rapid development of the emerging business segment of social gaming for Tier-1 countries, our team is looking for a talented and enthusiastic User Acquisition Manager to join our Facebook Ads team.

Working with us, you will have a wide freedom of action and space for your growth, spanning from full control over the creatives to be launched, to unlimited budgets, as well as working with Tier-1 GEO with an audience of 300+ million people. 

Key responsibilities:

• Creation, management and optimization of advertising campaigns in Meta Ads, encompassing full cycle of user acquisition management
• Testing of new Paid Social and other performance channels and technologies
• Working with and managing a number of projects with 6-figure monthly budgets
• Analytics of key indicators in all channels: CAC, ROMI/ROAS, CRs, LTV, etc.
• Ongoing testing of creatives, various funnels and strategies
• Participation in building a marketing and communication strategy for the brands together with the team.
   

Key requirements:

• At least a year of experience with Paid Social traffic sources (Meta Ads) with B2C products preferably aimed at Tier1 countries
• Deep understanding of digital marketing and lead generation domain
• Ability to research, replicate and come up with new creative ideas and funnels for traffic generation
• Ability relentlessly execute your ideas to get things done, to tackle problems on your own as well as being a team player
• Strong analytical skills: experience working with data and metrics as well as data-driven decision-making
• Upper-Intermediate English.

You'll want to work with us because we:

Care about your health:

• Health insurance;
• 24 calendar days of vacation;
• Compensation for sick days;
• 50-75% payment for a healthy lifestyle.

We charge with inspiration thanks to:

• A friendly team of like-minded colleagues who are always ready to help and support in the most difficult times;
• Absence of bureaucracy;
• Opportunities for professional and career growth;
• High competitive salary.

We create comfort with the help of:

• Effective organization of workflow and quick decision-making;
• Office format of work with the ability to work remotely 1 day a week: we have a new modern work space with uninterrupted Internet and charging stations, as well as a stylish terrace, a relaxation area where you can distract yourself playing PS5, table football, darts or just relax in a massage chair;
• Convenient office location within walking distance from the Lybidska or Druzhby Narodiv metro stations;
• Compensation for corporate lunches.

We at King Group are engaged in the development and promotion of entertainment products for users around the globe. Having successfully launched and scaled to profitability a number of new products within the last two years, we are on the constant run for new highs. Due to the rapid development of the emerging business segment of social gaming for Tier-1 countries, our team is looking for a talented and enthusiastic User Acquisition Manager to join our Paid Search team.

Working with us, you will have a wide freedom of action and space for your growth, spanning from full control over the acquisition, to unlimited budgets, as well as working with Tier-1 GEO with an audience of 300+ million people. 

Key responsibilities:

• Creation, management and optimization of advertising campaigns in Google Ads, Bing Ads, encompassing both search and non-search campaigns (Performance, DemandGen, UACs etc.)
• Working with and managing a number of projects with 6-figure monthly budgets
• Analytics of key indicators in all channels: CAC, ROMI/ROAS, CRs, LTV, etc.
• Ongoing testing of keywords, messages, various funnels and strategies
• Participation in building a marketing and communication strategy for the brands together with the team.
   

Key requirements:

• At least a year of experience with Paid Search traffic sources (Google Ads, Bing Ads) with B2C products preferably aimed at Tier1 countries
• Deep understanding of digital marketing and lead generation domain
• Ability relentlessly execute your ideas to get things done, to tackle problems on your own as well as being a team player
• Strong analytical skills: experience working with data and metrics as well as data-driven decision-making
• Upper-Intermediate English.
   

You'll want to work with us because we:

Care about your health:

• Health insurance;
• 17 calendar days of vacation;
• Compensation for sick days;
• 50-75% payment for a healthy lifestyle.

We charge with inspiration thanks to:

• A friendly team of like-minded colleagues who are always ready to help and support in the most difficult times;
• Absence of bureaucracy;
• Opportunities for professional and career growth;
• High competitive salary.

We create comfort with the help of:

• Effective organization of workflow and quick decision-making;
• Office format of work with the ability to work remotely 1 day a week: we have a new modern work space with uninterrupted Internet and charging stations, as well as a stylish terrace, a relaxation area where you can distract yourself playing PS5, table football, darts or just relax in a massage chair;
• Convenient office location within walking distance from the Lybidska or Druzhby Narodiv metro stations;
• Compensation for corporate lunches.

We are a software outsourcing company looking for a marketer to grow our digital presence and drive business growth.

What you'll be doing:

• Managing and improving corporate websites
• SEO - on-page, off-page, and technical optimization
• LLM marketing - increasing visibility in AI-powered search (ChatGPT, Perplexity, etc.), working with GEO strategies
• Content creation and management
• Competitor analysis and market research
• Monitoring, qualifying incoming requests, initial response, passing the lead to sales.

What we expect:

• Solid hands-on SEO skills
• Understanding of how LLMs shape search results and how to influence that
• English proficiency sufficient for content creation

Conditions:

• Full remote
• Salary: to be discussed individually

How to apply: Send your CV and LinkedIn profile link.

Deadline: April 17

We are looking for a Full Stack Developer to maintain the web version and mobile app, as well as to work on the backend and integrations.
This role involves not only development, but also technical support, integration, bug fixing and product improvement.

Responsibilities:

• Work with backend (Laravel API)
• Integrate external services:
  • Google Classroom
  • 1C
  • EDEBO
• Implement new features:
  • chat, notes, personalized recommendations
  • features for students and applicants (applications, notifications)
• Support existing functionality
• Debug, test, and fix issues
• Optimize performance
• Improve UX/UI in collaboration with designers

Tech stack:

• Flutter 3.19.3
• Dart 3.3.1
• Laravel

Requirements:

Frontend / Web:

• HTML, CSS, JavaScript
• Experience with React / Angular / Vue.js
• Understanding of responsive design

Backend:

• Experience with Laravel / Node.js / Python
• REST API integration
• Authentication (tokens, sessions)

Databases:

• MySQL / PostgreSQL / MongoDB

Other:

• Git (GitHub / Bitbucket)
• Experience with third-party integrations
• English — reading technical documentation

Nice to have:

• Firebase (Auth, Firestore, Push Notifications)
• CI/CD experience
• Unit / integration testing
• Experience with educational or government systems

Soft skills:

• Attention to detail
• Responsibility
• Teamwork
• Ability to meet deadlines

❗️Please note that this role is office-based for Serbia, Belgrade.

❗️If you need to be relocated, we take care of the process.

We are looking for a Senior UI Designer to join our team in Belgrade, Serbia.

✅ Requirements:
✔️ 5+ years of experience.
✔️ Strong aesthetic skills with the ability to combine various colours, fonts and layouts.
✔️ Attention to visual details.
✔️ Ability to meet deadlines and collaborate with a team.
✔️ Passion for gaming.
✔️ Understanding of HTML&CSS and adaptive markup basics.
✔️ Experience in creating the design for both complicated systems and marketing products interfaces.
✔️ Understanding of UI/UX, UI/UX Guide, responsive, Mobile first, Design Thinking concepts.
✔️ Experience creating and controlling libraries and Style Guide.
✔️ Working with retouch and graphics.

💡 Highly desirable: experience in UI design for mobile interfaces, with a strong understanding of mobile layout patterns and responsive behavior optimization.

✅ Responsibilities:
✔️ First of all, to create and implement with a team of designers and artists new projects bordering on games!
✔️ Design original pieces, including illustrations and infographics.
✔️ Review junior designers’ work to ensure high quality.
✔️ Generate ideas to portray concepts and advertise products/services.
✔️ Maintain brand consistency throughout all our marketing projects.
✔️ Work with components in Figma.
✔️ Work closely with the front-end and design team.

✅ We offer excellent benefits, including but not limited to:

🏢 Modern office in New Belgrade;

🏝 24 vacation days annually;

🤒 6 sick days without a medical certificate;

🏥 Premium Health Insurance (coverage up to 5,000 EUR annually);

🎉 Special occasion gifts: birthday, wedding, newborn;

📚 Learning & Development budget (for conferences, courses, and certifications);

🌍 Corporate events: international parties, team buildings, activities;

📈 Career growth opportunities in a fast-growing company;

✈️ Relocation package for international candidates (if you're not in Serbia);

🏋️ Sports package (FitPass membership);

🗣️ Language classes: Serbian & English (company-covered).

Bold moves start here. Make yours. Apply today! 

Our client is an Israeli startup specializing in geodata.

We are looking for a Senior Python Data Engineer to design and operate large-scale data pipelines that generate property attributes from imagery using our internal AI models.

This role focuses on building distributed processing systems running on Kubernetes clusters and on-prem GPU infrastructure, capable of processing massive geospatial datasets at national scale.

You will work closely with AI engineers and SaaS platform teams to build robust pipelines that transform imagery into structured property intelligence used by the insurance and financial industries.

Responsibilities

• Design and build large-scale Python processing pipelines for satellite and street-level imagery

• Develop distributed workloads running on Kubernetes clusters

• Build and maintain orchestration workflows using Airflow

• Design and manage data storage and processing workflows using PostgreSQL

• Integrate large-scale AI inference pipelines running on GPU infrastructure

• Optimize processing performance for massive imagery datasets

• Improve observability, monitoring, and reliability of production pipelines

• Collaborate with AI engineers to support large-scale computer vision inference workflows

• Integrate pipelines with AWS-based services

Requirements

• 7+ years of Python engineering experience

• Strong experience designing distributed data pipelines or large-scale data processing systems

• Experience running workloads on Kubernetes

• Hands-on experience with Airflow or similar orchestration frameworks

• Experience processing large datasets (imagery, geospatial, or other high-volume data)

• Strong understanding of ETL architectures and distributed data systems

Nice to Have

• Experience working with satellite imagery, aerial imagery, or remote sensing datasets

• Experience with GPU-based inference pipelines

• Experience working with on-prem compute clusters

• Experience with C#

Our client is an Israeli startup specializing in geodata.

Team Lead Python Data Engineer (Python)

Our client is an Israeli startup specializing in geodata.

We are looking for a Team Lead Python Data Engineer to lead the design and operation of large-scale data pipelines that generate property attributes from imagery using our internal AI models.

This role focuses on leading the development of distributed processing systems running on Kubernetes clusters and on-prem GPU infrastructure, capable of processing massive geospatial datasets at national scale.

You will work closely with AI engineers and SaaS platform teams to guide the development of robust pipelines that transform imagery into structured property intelligence used by the insurance and financial industries.

Responsibilities

• Design and build large-scale Python processing pipelines for satellite and street-level imagery

• Develop distributed workloads running on Kubernetes clusters

• Build and maintain orchestration workflows using Airflow

• Design and manage data storage and processing workflows using PostgreSQL

• Integrate large-scale AI inference pipelines running on GPU infrastructure

• Optimize processing performance for massive imagery datasets

• Improve observability, monitoring, and reliability of production pipelines

• Collaborate with AI engineers to support large-scale computer vision inference workflows

• Integrate pipelines with AWS-based services

Requirements

• 7+ years of Python engineering experience

• Strong experience designing distributed data pipelines or large-scale data processing systems

• Experience running workloads on Kubernetes

• Hands-on experience with Airflow or similar orchestration frameworks

• Experience processing large datasets (imagery, geospatial, or other high-volume data)

• Strong understanding of ETL architectures and distributed data systems

Nice to Have

• Experience working with satellite imagery, aerial imagery, or remote sensing datasets

• Experience with GPU-based inference pipelines

• Experience working with on-prem compute clusters

• Experience with C#

Our client is an Israeli startup specializing in geodata.

We are looking for a Autonomy Engineer to work on autonomous systems with a focus on computer vision, control theory, and data-driven modeling. This role is ideal for someone with strong analytical skills and experience applying data science to real-world autonomy or robotics problems.

Key Responsibilities

• Develop vision-based algorithms for perception and navigation.
• Work on data analysis and sensor fusion for multi-sensor systems.
• Build models and simulations to support system development and testing.
• Process and analyze datasets from cameras, IMUs, and other sensors to improve autonomy performance.
• Collaborate with robotics and software engineers on perception and navigation pipelines.
• Stay up to date with recent research in computer vision, autonomy, and data science.

Required Qualifications

• 2+ years of experience in data science, robotics, computer vision, or a related field.
• Knowledge of control theory, PID controllers, signal processing, and data-driven modeling.
• Understanding of geometric computer vision principles.
• Strong programming skills in Python and good working knowledge of C++.
• Experience working with Linux-based systems.
• Degree in Computer Science, Robotics, Engineering, Mathematics, or another STEM field (or equivalent practical experience).

Nice to Have

• Experience with SLAM or Visual-Inertial Odometry (VIO).
• Familiarity with OpenCV, NumPy, and ML frameworks such as PyTorch or TensorFlow.
• Experience with ROS2, Gazebo, or AirSim.
• Experience with PX4, Betaflight, or ArduPilot.
• Understanding of neural networks for computer vision.
• Interest in reinforcement learning or predictive modeling.

We are seeking a Data Scientist with a strong foundation in physics, control theory, and mathematical modeling to join our team working on cutting-edge autonomous systems. The ideal candidate combines analytical rigor with practical experience in modeling, simulation, and algorithm development for autonomous platforms.

Levels: Middle and Senior (responsibilities and scope will be adjusted accordingly).

Key Responsibilities

• Develop and validate mathematical models for autonomous systems and dynamic environments.
• Apply data-driven approaches for system identification, optimization, and predictive control.
• Analyze large datasets from sensors and simulations to extract insights and improve system performance.
• Design and implement algorithms for control, navigation, and decision-making.
• Collaborate with cross-functional teams to integrate models into real-world autonomous platforms.

Required Qualifications

• 3+ years in R&D or applied data science/software development.
• Strong background in mathematical modeling, system identification, and control theory.
• Proficiency in Matlab/Simulink for modeling and simulation.
• Experience in signal processing and data analysis.
• Programming skills in Python and C++.
• Ability to quickly research and apply recent trends in control theory, autonomous systems, and data-driven modeling.
• Relevant work experience or education in STEM field

Nice to Have

• Knowledge of aerodynamics fundamentals.
• Experience with Machine Learning (e.g., reinforcement learning, predictive modeling).
• Familiarity with simulation tools such as Gazebo, AirSim.
• Hands-on experience with SITL/HITL testing.
• Exposure to flight control stacks like PX4, Betaflight, ArduPilot.