Jobs at Djinni

Data Science UA is a service company with deep expertise in AI and Data Science. Our story started in 2016 with the first Data Science UA Conference in Kyiv, and since then, we’ve built one of the largest AI communities in Europe.

About the role:
We are looking for a hands-on Sr. Machine Learning / Computer Vision Engineer with strong practical experience in designing, training, evaluating, and improving vision systems for real-world applications. The ideal candidate combines solid theoretical ML/CV fundamentals with an engineering mindset and is comfortable taking ownership of the full pipeline, from data preparation and experimentation to model optimization and deployment.

Responsibilities:
- Design, train, evaluate, and improve machine learning and computer vision models for real-world production use cases
- Build and maintain end-to-end ML pipelines, including data collection support, preprocessing, feature engineering, training, validation, and inference
- Develop solutions across both computer vision and machine learning tasks depending on business needs
- Perform error analysis, diagnose model weaknesses, and drive improvements in accuracy, robustness, and reliability
- Select and justify appropriate methods and model architectures based on dataset characteristics, product constraints, and deployment requirements
- Work with challenging real-world data, including noisy, limited, imbalanced, or weakly labeled datasets
- Collaborate with engineering and product teams to translate business problems into practical ML solutions
- Contribute to production-ready development with a focus on maintainability, reproducibility, and performance

Requirements:
- 3–5+ years of professional experience in Machine Learning / Computer Vision
- Strong senior-level practical expertise in computer vision, machine learning, and applied model development
- Hands-on experience with tasks such as object detection, image classification, anomaly detection, feature-based approaches, or similar
- Solid understanding of classical ML methods, including tree-based models, linear models, feature engineering, model selection, and evaluation
- Strong Python skills and practical experience with PyTorch, OpenCV, and common ML tooling
- Experience building full ML workflows including data preparation, augmentation, preprocessing, training, validation, testing, and deployment handoff
- Strong understanding of model evaluation, debugging, overfitting, generalization, optimization, and experiment-driven improvement
- Ability to write clean, modular, maintainable code and independently own technical solutions
- Strong analytical thinking, engineering maturity, and problem-solving skills

Nice to Have:
- Experience in adjacent ML domains such as time-series, audio, or NLP
- Experience with embedding-based methods, metric learning, retrieval systems, or memory-bank approaches
- Practical experience with model optimization techniques such as quantization, pruning, distillation, or related efficiency-focused approaches
- Experience working with real-world industrial datasets and ambiguous problem formulations
- Knowledge of software engineering best practices, reproducible experimentation, and pipeline design

We offer:
- Free English classes with a native speaker and external courses compensation;
- PE support by professional accountants;
- Medical insurance;
- Team-building events, conferences, meetups, and other activities;
- There are many other benefits you’ll find out at the interview.

🔹 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

About the Client:

The client provides comprehensive operational support and a range of expert services to the world’s leading insurers, brokers, fleet managers and automotive manufacturers. 3,300 employees across ten countries deliver exceptional standards on a large scale for over 1,200 clients. They help the global insurance market to handle millions of claims each year in the most cost-effective and efficient ways possible.
Company is embarking on an exciting and challenging transformation program and our software solutions are a driving force behind this strategy using cloud computing and leading-edge design patterns. 

Short Role Description:
This is a great opportunity for an experienced Senior Full Stack Developer to join our Software Development team, being part of one of our existing scrum teams. Each agile team includes technical leadership, development, architecture, quality, product and project management roles.
We are looking for a Senior Full Stack Developer comfortable with C# and Angular, with a proven history of building high-performance apps with a strong focus on system integrations and API-driven solutions.

Key Responsibilities:

• Work on business requests and development improvements
• Develop, test, document and maintain our application back end build scalable and reusable code
• Provide realistic estimates for requests, fixes and new ideas
• Create unit tests
• Write clear and precise technical documentation
• Manage realistic work deadlines
• Participate in all the scrum ceremonies and be part of the team performance and continuous improvement
• Design and maintain integrations between internal and external systems
• Develop and evolve RESTful APIs used for system-to-system communication
• Ensure reliability, performance, and data consistency across integrations
• Own integration-related technical decisions, including security and data exchange approaches

Knowledge and Experience:

• 5+ years of experience of Microsoft development stack including; .NET C#, SQL Server T-SQL.
• Important: .Net Core SQL Server, HTML, CSS, Javascript, Git, Angular
• Azure, .NET core, SOLID principles, Microservices architecture, Design principles, Jira.
• Strong experience in API design and backend integrations
• Hands-on experience integrating with third-party systems
• Good understanding of authentication and authorization mechanisms (OAuth2, JWT, API keys)
• Experience with asynchronous or event-driven communication patterns
• Ideally, you will have experience working with Scrum methodology in a variety of contexts; different team sizes, organizational cultures, distributed development, etc.
   

We Offer:

• An innovative and dynamic environment focused on technology-driven transformation and your professional growth.
• Flexible working arrangements, including remote or hybrid options.
• Competitive compensation package commensurate with your experience.
• Opportunity to deliver impactful solutions to industry-leading global enterprises.

We are seeking a proactive, results-driven Lead Generator to join LegioSoft’s marketing team. In this role, you will research and enrich lead data, initiate first contact with prospects, and convert cold outreach into qualified meetings for the Sales Manager and CEO.

You will actively work across LinkedIn, Upwork, and Email channels, using CRM systems and lead enrichment tools to build a strong and predictable outbound pipeline.

Key Responsibilities

• Act as a professional ambassador of LegioSoft in all outbound communication
• Research, enrich, and segment lead data using internal databases and enrichment tools
• Conduct daily outreach across LinkedIn, Upwork, and email channels
• Work closely with the Sales Manager and CEO to generate leads within defined industries and ICPs
• Convert initial contacts into qualified leads and scheduled sales meetings
• Clearly communicate LegioSoft’s services, technical expertise, and business value to prospects
• Proactively identify new outreach angles and market opportunities
• Maintain accurate and up-to-date records in HubSpot CRM
• Consistently meet or exceed individual KPIs and outreach targets
• Ensure all communication aligns with LegioSoft’s professional brand and tone
• Support internal teams operationally when required

Who You Are (Person Specification)

• Able to work independently in a remote environment and manage outreach pipelines
• Strong written and verbal English communication skills
• Confident in objection handling and early-stage sales conversations
• Highly organized with strong attention to detail
• Self-driven, proactive, and performance-oriented
• Interested in technology, SaaS, and digital product development
• Comfortable working with data, tools, and outreach systems
• Experience working with B2B services or software companies is a strong plus

Skills & Tools

• Professional outbound experience via LinkedIn, email, and Upwork
• Understanding of lead qualification (ICP fit, basic sales frameworks)
• Experience working with CRM systems (HubSpot preferred)
• Familiarity with lead enrichment tools such as:
  • Clay
  • Apollo
  • Snov
  • Hunter or similar platforms
• Ability to structure, validate, and enrich lead data to improve conversion rates

What Success Looks Like

• Consistent achievement or overperformance against lead generation KPIs
• High-quality, well-qualified sales meetings delivered to the Sales team
• Clean, structured, and reliable CRM data
• Strong response rates and professional first-touch communication with prospects

Who are we looking for?

We are looking for a developer who is ready to join our team and start working together on our projects.

Tasks?

Your tasks will focus on the skills and expectations listed below and the use of new approaches and technologies.

Why did the job open?

We want to invite a new specialist to the company's staff due to the increase in the number of projects.

Skills:

• 2+ years of JavaScript experience;
• 1+ years experience with TypeScript;
• 2+ years of experience with React and React Native;
• Introduction to Google Play Console and App Store Connect;
• Acquaintance with modern methods and tools for building front-end applications;
• Experience with REST;
• Experience with Redux/Mobx or other state management libraries;
• Ability to communicate well with process participants and team members related to business requirements;

• English level - Intermediate+ (written and spoken).

   

Will be an advantage:

• Experience writing unit tests for front-end components;
• Experience with Flipper debug tool;
• Experience with Expo;
• Experience with App Center and CodePush;
• Experience with GraphQL;
• Experience with other JS frameworks Vue/Angular etc.;
• Experience with Node.js;
• Experience in using agile methodologies and principles;

• Experience working with an international team.

   

What do we expect from you?

• Self-organization and independence in work;
• Attention to detail;
• Constant learning.

Who are we looking for?

We are looking for a "self-starter" who is ready to join our team and start working together on our projects immediately or after training.

Tasks?

Your assignments will be based on the skills and expectations listed below, using new approaches and technologies.

Why did the vacancy open?

We want to invite a new specialist to the company's staff in connection with the increase in the number of projects.

Skills:

• English level at least Upper-Intermediate B2 (effective written and oral communication);
• Understanding: API testing process (using Postman, Swagger), basics of testing theory with practical application. Experience with basic tools for testing both web and mobile applications;
• Understanding the software development life cycle;
• Understanding the testing life cycle;
• Working with project documentation (User Story), planning and prioritizing testing;
• Ability to create and maintain test documentation (namely Checklist, Test Cases, Bug Reports, etc.);
• Strong analytical skills;
• Ability to work both independently and in a team;
• Working with designs in Figma;
• Problem solving, attention to detail;
• Вasic knowledge of automation.

What do we expect from you?

• Self-organization and independence in work;
• Attention to detail;
• Continuous training.

Who are we looking for?

We are looking for a developer who is ready to join our team and start working together on our projects.

Tasks?

Your tasks will focus on the skills and expectations listed below and the use of new approaches and technologies.

Why did the job open?

We want to invite a new specialist to the company's staff due to the increase in the number of projects.

Requirements:

• B2 English (Upper-Intermediate);
• At least 4+ years of commercial experience with JavaScript;
• At least 3+ years of commercial experience with Node.js;
• At least 2+ years of commercial experience with React.js;
• Experience with TypeScript and Nest.js;
• Experience working with meta-frameworks over React (e.g., Next.js, Remix);
• Experience with RDBMS and NoSQL databases;
• Experience with implementing automated testing platforms and unit tests;
• Experience with REST;
• Experience with Redux/Mobx or other state management libraries;
• Familiarity with modern interface pipelines and assembly tools;
• Ability to communicate well with process participants and team members related to business;
• Experience in integrating with external APIs;
• Solid understanding of object-oriented and functional programming;
  Flexibility and ability to adapt to changes;
• Ability to work closely with Product Managers and Engineering Team-members;
• Experience working with message brokers such as RabbitMQ, SQS, or NATS;
• Understanding and practical knowledge of Secure Software Development Life Cycle (SSDLC) principles;
• Experience building AI-powered solutions;
• Knowledge of observability and monitoring practices, including implementation of metrics, logs, and traces based on industry best practices.
   

Good to have:

• Experience with DevOps;
• Experience with cloud services such as AWS, GCP or Azure;
• Experience with CI/CD processes;
• Experience with Unit/E2E testing;
• Understanding of design and architecture principles;
• Experience with Infrastructure as Code (IaC);
• Experience with solution and system architecture;
• Experience using AI tools to enhance productivity;
• Experience building advanced AI agents;
• Familiarity with emerging protocols and specifications for AI agent systems, such as MCP, A2A, and AG-UI.

Who are we looking for?

We are looking for an "independent fighting unit" who is ready to join our Team and start working together on our projects immediately or after training.

Tasks?

Your tasks will focus on the skills and expectations listed below and the use of new approaches and technologies.

Why did the job open?

We want to invite a new specialist to the company's staff due to the increase in the number of projects and the opening of a branch.

Requirements:

• B2 English (Upper-Intermediate)
• At least 3+ years of commercial experience with JavaScript;
• At least 2+ years of commercial experience with Node.js;
• At least 2+ years of commercial experience with React.js;
• Experience with Typescript, Nest.js;
• Experience with RDBMS and NoSQL databases;
• Experience with implementing automated testing platforms and unit tests;
• Experience with REST;
• Experience with Redux/Mobx or other state management libraries;
• Familiarity with modern interface pipelines and assembly tools;
• Ability to communicate well with process participants and team members related to business;
• Experience in integrating with external APIs;
• SOLID understanding of object-oriented and functional programming
• Flexibility and ability to adapt to changes;
• Ability to work closely with Product Managers and Engineering Team-members.

Good to have:

• Experience with DevOps;
• Experience with cloud services such as AWS, GCP or Azure;
• Experience with CI/CD processes;
• Experience with Unit/E2E testing;
• Understanding design, and architecture principles;
• Experience with message brokers, like RabbitMQ, SQS, etc;
• Experience with Infrastructure as code (IaC).

Company
The company’s core focus is lead generation in the iGaming domain, primarily through SEO-driven solutions. They work with long-term client projects and are currently expanding their internal development team.

Position
We are looking for a Lead / Senior Full-Stack Engineer(PHP/Wordpress/JS) to join an established front-end team. The role requires a senior-level engineer who can take ownership of complex tasks, contribute to technical decisions, and support overall code quality.

Full-time, long-term cooperation

Location
Remote
Candidates must be located within the EU time zone

Language
English – sufficient for regular communication with the team

Experience
5–10 years of commercial development experience

Team & Projects
You will join a stable, long-term team working on multiple client projects focused on lead generation platforms. The team already includes several front-end developers, and we are looking for a more senior specialist who can take ownership of complex tasks and support overall technical quality.

Tech Stack

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

Key Requirements

WordPress (advanced level)

• Experience building complex WordPress-based systems (beyond simple blogs)
• Hands-on experience with WordPress Multisite
• Custom plugin development using:
  • Object-Oriented Programming
  • Composer / autoloading
  • Typed properties and variables
  • Custom database tables
• Experience creating custom caching solutions for high-performance systems
• Strong experience with WP_Query for complex queries
• Experience building custom tools to improve the WordPress developer or admin experience

PHP

• 5+ years of experience with modern PHP (8+)
• Experience with phpcs / phpcbf
• Experience defining custom sniffs or working with PHPParser / AST
• Experience with reflection and introspection
• Solid understanding and practical use of DTOs and Value Objects

General

• Experience working with Core Web Vitals and performance optimization

Start Date
ASAP

Our Customer is a top-tier Digital Innovation and Software Engineering company delivering cutting-edge solutions for fast-growing businesses and enterprises. We specialize in FinTech, Renewable Energy, and Healthcare, with deep expertise in AI, Blockchain, and Data Science.
 

With a global team of 200+ professionals, we build innovative digital products that create sustainable business value and strengthen our clients’ competitiveness in an evolving digital landscape.
 

Project Overview

You will be working on one of the first licensed digital asset banks powered by Blockchain.
The product enables a simplified and secure process for capital raising, allowing companies and investors to:

• Create and manage digital assets
• Launch and manage offerings
• Buy, trade, and earn crypto assets

Our team is responsible for delivering one of the core services of the platform.

Responsibilities

• Collaborate closely with the team to build and evolve a mobile application
• Develop a new mobile app using React Native and Expo, ensuring scalability and maintainable architecture
• Improve and extend application functionality, including payment processing optimization
• Implement pixel-perfect UI based on provided designs
• Participate in planning, discovery, and implementation of new features
• Own features end-to-end: development, testing, and documentation

• Ensure high-quality, stable, and well-tested deliverables

   

Requirements

• 8-10 years of hands-on experience with React Native and TypeScript
• Strong knowledge of modern React patterns and state management (e.g. Zustand, Jotai Toolkit)
• Experience with React Query or similar server-state libraries
• Experience with React Navigation or Expo Router
• Understanding of secure storage solutions and basic mobile security concepts
• Familiarity with Expo modules and config plugins (optional but appreciated)
• Ability to work with native modules and basic Xcode / Android Studio configuration
• Good understanding of unit and integration testing for React Native apps
• Strong sense of ownership and high quality standards

Nice to Have

• Experience in banking or financial applications
• Experience with enterprise-level CI/CD for mobile

• Proactive communication and creativity in designing technical solutions

   

What They Offer

• Long-term team focus with transparent communication and minimal bureaucracy
• Opportunity to build niche expertise in FinTech, Healthcare, and other domains
• Continuous learning: personal development plans, roadmaps, and fast-track growth
• Strong internal career development culture
  (80% of executives were promoted internally)
•  

Benefits & Perks

• Flexible working schedule
• Fully remote work model
• Medical insurance
• Paid vacation
• Paid sick leave
• Paid public holidays

We are seeking a Senior Backend Developer who combines strong technical expertise with sharp business understanding and leadership potential. The ideal candidate is not only an excellent Python/Django developer, but also a fast learner who can quickly grasp complex business domains, such as mortgage and financial workflows, and translate them into robust, scalable software solutions. This role is perfect for someone who thrives in dynamic environments, communicates effectively across teams, and takes ownership of projects from concept to delivery.

Job requirements

Key Responsibilities:

• Lead technical delivery by collaborating with product managers and business stakeholders, converting business goals into detailed, executable backend solutions;
• Design and implement scalable backend systems and APIs using Python and Django;
• Architect and maintain PostgreSQL data models, including schema design and migrations;
• Build and optimize ETL processes and workflows to support financial operations;
• Ensure data quality and compliance standards are met in all integrations and system interactions;
• Participate in sprint ceremonies, architectural planning, and technical discussions;
• Monitor system performance, identify bottlenecks, and implement optimizations.

Requirements:

• 5+ years of hands-on backend development experience with Python and Django;
• Strong experience designing and delivering APIs in production systems;
• Solid understanding of PostgreSQL (schema design, migrations, optimization);
• Proven experience with ETL processes, data workflows, and integration of external systems;
• Strong knowledge of object-oriented programming and software design principles;
• Familiarity with Agile/Scrum methodologies and iterative delivery;
• Ability to work independently while also mentoring and supporting other developers;
• Excellent communication and problem-solving skills, with the ability to quickly grasp complex business domains.

Nice to Have:

• Experience working in the financial services domain;
• Experience with Loan Origination System (LOS), specifically ICE Mortgage Technology Encompass.

Skills

• Commercial experience in software development projects
• Working experience with Next.js, React, Tailwind, PostgreSQL, Prisma
• Strong knowledge of JavaScript, Data Algorithms and Structures
• Hard-working, smart, proactive, goal oriented, open in communication, not afraid to voice your own opinion
• Willing to take part in business and design decisions and analysis
• Experience with Python - preferable
   

Do not hesitate to apply if you are missing specific experience.

We Offer

• WFH and flexible working hours

Requirements

• Develop new features and improve existing ones for Valid-X 's products.

• Proactively take part in design and marketing discussions, take responsibility for products from the technology side.

   

Project description

• Social wiki platform website 
• Tech stack: Next.js, Node.js, PostgreSQL, Prisma, Vercel

• Other projects

   

• Project Description:

  The SEM product is embedded within the Geosciences Suite of Applications. This application has multiple views consisting of both 2D and 3D visualizations. The current data visualization is not sufficient for what we would like it to be. This role is expected to work with the lead and the product owner to understand the current shortcomings, investigate and research potential solutions, propose these solutions to the teams, and then work on the implementation of the agreed upon work. To get to this stage, the developers will also need to learn the inner workings of the visualization framework within Geoscience.

   

• Responsibilities:

  • Design, develop, and maintain graphics-intensive modules within the Geoscience platform using Java and OpenGL.
  • Implement advanced 2D and 3D visualization features for seismic, geological, and geospatial data.
  • Optimize rendering performance and ensure cross-platform compatibility, particularly in Linux environments.
  • Collaborate with geoscientists and software engineers to translate domain-specific requirements into technical solutions.
  • Participate in code reviews, testing, and documentation to maintain high-quality software standards.
  • Stay updated with the latest developments in graphics technologies and geoscience applications.

   

• Mandatory Skills Description:

  • Bachelor's or Master's degree in Computer Science, Geoscience, or a related field.
  • 5+ years of professional experience in C++ OR Java development with a focus on graphics programming.
  • Proficiency in OpenGL and related graphics libraries for rendering complex datasets.
  • Strong experience working in Linux environments, including shell scripting and system optimization.
  • Excellent problem-solving skills and the ability to work collaboratively in a multidisciplinary team.

   

• Nice-to-Have Skills Description:

  • Experience with geoscience software platforms.
  • Familiarity with geoscience data formats and visualization techniques.
  • Knowledge of additional programming languages such as Python, Java.
  • Understanding of GIS technologies and spatial data analysis.
  • Experience with agile development methodologies and version control systems like Git

Required skills:
*1+ years of experience in graphic design
*Proficient in design software: Adobe Photoshop, Illustrator. Adobe After Effects & experienced user of Figma - as a plus
*Deep understanding of design principles such as layout, typography, color theory, and composition. You should also be able to apply these principles to create effective designs for different media types, including web and print
*You should have a keen eye for detail and be able to spot inconsistencies or errors in your work, as well as in the work of others
*Strong understanding of branding and marketing principles, as well as a good knowledge of the gambling industry and its customers as a plus
*Teamwork skills. You should be able to communicate effectively, share ideas, and work collaboratively to achieve shared goals
*Time management and organizational skills. You will need to be able to manage your time effectively, work on multiple projects simultaneously, and meet tight deadlines. You should also be highly organized, with a system for keeping track of project files, revisions, and feedback

Responsibilities:
*Creating designs for digital and print media: You will be responsible for designing and creating visually appealing graphics and layouts for various marketing collateral, such as websites, social media platforms, email campaigns, print materials, and other digital content
*Collaborating with other teams: You will need to work closely with other members of the marketing team, including SMM, web designers, and content creators, to ensure that your designs align with the overall marketing goals and objectives of the company
*Developing and maintaining brand guidelines: You will be responsible for developing and maintaining brand guidelines to ensure that all design work is consistent and aligned with the company's overall branding strategy
*Conducting research and staying up-to-date with design trends: You will need to stay up-to-date with the latest design trends and tools in order to continually improve the quality of your work and ensure that your designs are modern and relevant
*Task deadlines: As a graphic designer, you will be expected to manage your time effectively and meet project deadlines in a timely manner. You may also need to work on multiple projects simultaneously, so effective time management is essential

We offer:
*Remote work from anywhere in the world, fixed schedule (Mon-Fri from 10:00 to 19:00) Kyiv time
*24 working days of annual paid vacation + Paid sick leave + All official Ukrainian holidays + 2 DayOFF
*We compensate: advanced training courses, foreign language courses, etc.
*The possibility of rapid career growth (companies at the stage of active growth are an ideal place for a rapid take-off)
*Work with the international market and the main focus on Europe
*Paid vacation and sick leave
*Team buildings

The client is a worldwide company. The project is a cloud-based application. It allows the tracking of inventory traceability innovatively.

Technologies
Azure, Net Core, Azure DevOps, SQL Server / and Entity Framework

Requirements:

• Degree in Software Engineering, or a related field
• A minimum of 6 years experience in delivering and supporting enterprise grade applications, preferably in the manufacturing industry
• Strong knowledge of cloud computing and custom software development processes
• Proficiency in Microsoft Techology Stack like Azure, Net Core, Azure DevOps, SQL Server / and Entity Framework
• Excellent problem-solving and troubleshooting skills
• Strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams
• Attention to detail and a commitment to delivering high-quality digital solutions

Job responsibilities:

• Responsible for design and implementation of enterprise applications in the manufacturing domain
• Develop clean, efficient, and maintainable code
• Establish and foster good practices among the team
• Ensure seamless integration, efficient operations, and robust security across all system components
• Create and maintain documentation and collaborate with the technical analysts defining operational procedures
• Lead and mentor software developers and foster a collaborative environment within the team
• Think ahead and anticipate problems, issues, and solutions to improve operations