Jobs at Djinni

Description

Pluto TV is looking for an experienced Senior Full Stack Software Engineer for development of new, as
well as enhancement of existing applications powering its Enterprise Platform, which includes PlutoTV’s
centralized platform management tool, middleware, and supporting backend services including but not
limited to database access, event management, as well as authorization and authentication services.
Candidates should have exposure on how to integrate with external systems. Candidates must have
hands-on experience with Golang, Javascript, Node, Express, React and similar JavaScript-based
technologies, strong experience building solutions with AWS or Google Cloud Services.

Requirements

Desired Qualities / Experience

● Familiarity with observability and monitoring tools
● VOD Streaming experience is desired
● Familiarity with authorization and authentication principles is desired
● Familiarity with 3rd party authorization and authentication apis and software is desired

Job responsibilities

Responsibilities Include:
This is a critical role with a wide range of responsibilities, including:

● Design, implement and deploy new scalable and secure Golang and Node.js services
● Design and maintain data intensive high throughput GRPC and RESTful APIs
● Participate in code reviews and ensure developers adhere to team’s best practices and
processes
● Develop technical requirements for new projects or improve existing projects with teams
● Monitor and improve team engineering metrics
● Ensure priority tasks such as production issues are investigated and resolved in a timely manner
Required Qualities / Experience
We believe the right individual will have the following skills and experience in order to be successful in this
role:
● BS degree or higher in Engineering, Computer Science, or a related field required
● 7+ years of software engineering experience
● 3+ years of experience developing application services using Golang, Node, and front-end
frameworks/libraries like React

● 3+ years of experience building highly scalable, performant and responsive web applications
● 3+ years of experience developing applications deployed on AWS or GCP
● 3+ years of experience with Linux systems or shell scripting
● 2+ years of Typescript experience
● 2 + years of Golang experience
● 3 + years of experience with writing and using APIs to consume data and push data to
MongoDB
● Excellent problem solving, critical thinking, and communication skills
● Experience with as much of our technology stack as possible: Redis, Git, AWS, Kubernetes
● Experience working within a globally distributed team

We’re looking for a Technical Specialist / Keitaro Integrator to join our traffic team.
Your mission will be to keep our tracking infrastructure fast, reliable, and scalable — so media buyers can focus on growth, not bugs.

You’ll be the go-to person for Keitaro: from setup and integrations to automation and troubleshooting. If you enjoy digging into APIs, building scripts, and making processes run smoother — this role is for you.
 

What you’ll do

• Configure, administer, and optimize Keitaro Tracker (campaigns, flows, redirects, rules).
• Integrate Keitaro with external tools (CRMs, ad platforms, BI, anti-detect browsers, proxies).
• Set up postbacks, events, macros, and traffic distribution rules.
• Automate workflows via Keitaro API, scripts, and platforms like Zapier / n8n / Make.
• Handle domains, SSL setup, server configs, and bug fixes.
• Improve tracking performance: speed, bot filtering, analytics accuracy.
• Provide technical support to media buyers and help them launch campaigns smoothly.
   

What we’re looking for

• 1+ years of hands-on experience with Keitaro (setup, optimization, integrations).
• Solid understanding of Keitaro API, plus basic SQL / PHP / JavaScript.
• Experience with postbacks, redirects, macros, event tracking.
• Understanding of traffic stack basics: cloaking, proxies, anti-detect browsers, trackers.
• Experience integrating CRMs, Google Sheets, messengers, BI tools.
• Comfortable with VPS, Linux, Nginx, SSL.
   

Nice to have:

• Familiarity with other trackers (Binom, Voluum).
• Automation experience (n8n, Zapier, Make).
• DevOps background or interest in scaling infrastructure.

What we offer

• Work in a high-performing affiliate marketing team (verticals: iGaming / Nutra / Subscriptions).
• Remote-first culture: work from anywhere.
• Flexible schedule, but with readiness to support the team when needed.
• Growth path towards DevOps / Automation Engineer or a broader Tech Lead role.

Job Description

• 4+ years of hands-on experience in test automation using Java.
• Strong experience with Playwright(Selenium, Java binding) for UI test automation.
• Solid knowledge of JUnit 5, test design principles, and the test lifecycle.
• Proficient in testing REST APIs using tools like Retrofit, Postman, or similar.
• Experience validating data at the database level using SQL or frameworks like MyBatis.
• Comfortable working in Agile/Scrum environments, participating in daily standups, reviews, and retrospectives.
• Hands-on experience with CI/CD tools (e.g., Jenkins, GitLab CI).
• Knowledge of test reporting tools (e.g., Allure).
• Ability to troubleshoot and debug automation failures across multiple layers (UI, API, DB).
• Ability to create a functional test plan and test cases.
• Strong communication skills and a proactive attitude.

Nice to Have:

• Experience with Manifold for Java (plugin and usage).
• Exposure to test planning and requirement traceability.

Job Responsibilities

• Collaborate closely with developers and other QA engineers during sprint planning and refinement.
• Design, implement, and maintain E2E and integration tests for web applications and RESTful APIs.
• Build and enhance automated test suites using Java 11, Playwright, and JUnit 5.
• Perform API-level testing using Retrofit, and validate business logic and database operations with MyBatis.
• Configure and manage test environments and property files using the owner library.
• Participate in code reviews and contribute to test framework improvements and standards.
• Analyze test results, investigate issues, and log defects with clear documentation.

• Work with Jenkins or similar CI/CD tools to monitor and troubleshoot test pipeline runs.

   

Department/Project Description

GlobalLogic’s client, which is a leading provider of Legal Spend Management solutions, supports insurance carriers, third-party administrators, and self-insured entities in optimizing their claims and legal expense operations. Their platform enhances efficiency by providing actionable insights, automating legal bill review, and strengthening vendor collaboration, ultimately driving down legal costs and improving overall performance.

Job Description

Minimum of 7 years of experience in software development, with a focus on designing and implementing highly scalable web applications, data pipelines, and cloud-based microservices

Proficiency in Java programming language and related technologies. Experience with frameworks such as Spring, Hibernate, and Apache Kafka, and cloud-native services is highly desirable

Proven experience in UI/Angular development

Strong understanding of database concepts and experience with SQL and NoSQL databases (e.g., MySQL, Oracle, Cassandra, DynamoDB, Redis).

Familiarity with cloud platforms (e.g., AWS, Azure, Google Cloud) and experience deploying applications in cloud environments is advantageous

Experience with microservices and event-driven architectures

Strong analytical and problem-solving skills with the ability to troubleshoot complex issues and implement effective solutions

Excellent written and verbal communication skills with the ability to articulate technical concepts clearly and effectively

Ability to work both independently and collaboratively in a fast-paced, agile environment. Strong team player with a positive attitude and a passion for technology

Job Responsibilities

Architect, design, and develop highly scalable, reliable web scale applications, tools, and automation frameworks to meet business requirements.

Implement cloud-based microservices leveraging event-driven architectures.

Collaborate with cross-functional teams to design and build efficient and robust data pipelines for batch, near-real-time, and real-time processing using Java technologies.

Optimize applications, data pipelines, and microservices for scalability, performance, and efficiency to handle large volumes of data and traffic in a cloud environment.

Ensure adherence to coding standards, best practices, and software development methodologies. Perform code reviews and provide constructive feedback to team members.

Implement monitoring and alerting solutions to ensure the reliability and availability of applications, data pipelines, and microservices. Participate in troubleshooting and resolution of production issues.

Create and maintain technical documentation, including design documents, architecture diagrams, and system documentation.

Collaborate effectively with cross-functional teams, including product management, QA, and operations. Communicate technical concepts and solutions to both technical and non-technical stakeholders.

Department/Project Description

Our client is innovative manufacturer of medical devices in the United States which produces a devices and software applications.

At this project, you will have a great opportunity to be involved into the full development life cycle of medical software which is intended to help individuals by processing certain information taken from medical devices to identify health trends and to track daily activities. As additional there are opportunities to work with medical devices, in scope of end-to-end testing.

PointPay, an established crypto ecosystem, is looking for an experienced IT & Crypto Recruiter to scale our international team.

Responsibilities:

• End-to-end recruitment: sourcing, interviewing
• Hiring for both technical and managerial roles
• Working with job boards, LinkedIn, crypto/tech communities, and niche channels
• Conducting interviews and assessing candidates
• Negotiating offers and supporting candidates through the hiring process

Requirements:

• 2+ years of proven experience in IT recruitment
• Experience hiring for crypto/blockchain/fintech projects will be a plus
• Solid knowledge of IT and crypto roles, market trends, and terminology
• Excellent communication and networking skills
• Ability to manage multiple vacancies in a fast-paced environment

We offer:

• Fully remote work with flexible schedule
• Competitive compensation 
• Opportunity to work on international IT & crypto projects
• Supportive and professional team

Who we're looking for

We seek an experienced Agile Coach to enhance product development processes and elevate team maturity through agile practices and frameworks. The ideal candidate will have a track record of developing team competencies and increasing awareness of customer needs, productivity, and flow efficiency. They should independently identify areas for improvement and confidently implement changes across assigned teams. We expect their approach to be grounded in a solid understanding of agile practices, emphasizing customer-centricity, continuous improvement, and collaboration.

Objectives of this role

• Serve as a reliable partner to Product Managers, Engineering Manager, and Teams in their efforts to enable data-driven process improvement in accordance with Agile values and principles.
• Support the process of change implementation (informing, training, evaluating how the change is going, and providing feedback)
• Conduct an audit of existing processes and events, and assess the quality of key artifacts.
• Evaluate team competencies to identify areas for growth and development.
• Develop the culture of facilitation to ensure efficient team events and an atmosphere of open dialogue, high engagement, and continuous improvement.

Responsibilities

• Support employees’ learning and development in a scaled Product environment, teaching, coaching, mentoring, and facilitation.
• Design and deliver practical workshops to Product teams and key stakeholders.
• Coach and mentor managers and Product teams to ensure the adoption of agile practices fit for the context.
• Communicate agile principles and practices, and overall operating model across the organization
• Champion the use of metrics and the culture of Evidence-Based improvement across Product teams.
• Maintain objectivity when addressing issues and troubleshooting by applying agile principles.
• Supporting Product teams and the wider company in identifying and resolving problems by applying Systems Thinking.
• Assisting management with the design of existing teams and in the formation of new ones
• Drive organisational change management to drive sustainable improvement within the R&D

Required skills and qualifications

• 3+ years of experience as an Agile Coach, Scrum Master, or Delivery Manager.
• 5+ years of experience in companies developing software (Product development preferred)
• Experience in using Scrum, Kanban, or other agile frameworks.
• Experience in Scaled agile environments (LeSS, Nexus, Scrum Scale)
• Track record of implementing and improving agile practices in different work cultures and environments.
• Ability to work with process metrics: collecting, analyzing metrics, and implementing data-driven improvements.
• Strong skills in educational design and delivery.
• Excellent written and verbal communication skills.

Preferred skills and qualifications

• Relevant certifications (PSM2, KMP, ICP-ACC, CLP)
• Experience in creating and customizing custom dashboards using eazyBI or its alternatives.
• Work experience in SaaS start-ups during the period of active growth and scaling.
• Computer Science degree or engineering background.

Job Description

General:

- Unit Testing: Jasmine, Karma
- E2E Testing: Cypress / Protractor (Cypress preferred)
- Test Coverage & Mocking strategies
- Linting & Formatting: ESLint, Prettier, Stylelint

• Experience testing software systems without user interfaces (i.e. API testing)
• Developing, executing, and maintaining automated test scripts
• Hands-on coding experience with Java 
• Experience with Selenium WebDriver & Jmeter
• Solid understanding of QA practices (black box testing, risk-based testing, system testing, regression testing, exploratory testing)

Must have:
* Test Automation Experience: API (backend) testing (3+ years)
* Test Automation Frameworks: RESTassured, Selenium, Cypress, or Playwright
* Programming Languages: Java (3+ years)
* Tools: Postman, event logging (Splunk/Datadog), CICD pipeline integration
* Regulatory experience
* Excellent English communication skills

Nice to have:
* Salesforce
* Atlassian tools: Jira, Confluence, Bamboo
* mySQL
* Jama QMS

Job Responsibilities

 - Perform testing on software systems without user interfaces, focusing on API testing.
 - Develop, execute, and maintain automated test scripts to ensure software quality and reliability.
 - Write and maintain code using Java or JavaScript.
 - Utilize Python for scripting and automation tasks.
 - Use Selenium WebDriver for web application testing.
 - Implement performance testing using Jmeter.
 - Apply solid QA practices including black box testing, risk-based testing, system testing, regression testing, and exploratory testing to identify and resolve issues.

Department/Project Description

Our client is an innovative manufacturer of medical devices in the United States, producing devices and software applications.

In this project, you will have a great opportunity to be involved in the full development life cycle of medical software, which is designed to assist individuals by processing information from medical devices to identify health trends and track daily activities. In addition, there are opportunities to work with medical devices, in the scope of end-to-end testing.

Here is our dev tech stack:
aws
terraform
bamboo/gitlab
java 11+
Hibernate
Maven
spring/springboot
mysql
okta

Вимоги

• 3+ years of experience.
• Proficiency in JavaScript (ES6+) and TypeScript.
• Strong knowledge of React/Next.js and Nest.js.
• Expertise in building scalable Node.js APIs.
• Familiar with graphql.
• Should be able to articulate what is HTTP, TCP, UDP and WebSockets in context of web development.
• Hands-on experience with Docker.
• Experience with relational and NoSQL databases (PostgreSQL, MongoDB, Redis, ClickHouse).
• Understanding of software design principles and ability to write clean, maintainable code.
• Experience with Git and Git workflows.
• CI/CD pipeline setup experience (GitHub Actions/GitLab CI/CircleCI).

Обов'язки

• Develop, maintain, and enhance full-stack features for a applications of various scale.
• Work with modern front-end technologies (React 18+, TypeScript, SCSS) and back-end logic (Node.js).
• Ensure responsive design and cross-browser compatibility.
• Collaborate with team members using Git workflows and best practices for branch management.
• Refactor legacy code and implement modern solutions for scalability and maintainability.
• Participate in code reviews, provide feedback, and contribute to technical discussions.

Буде плюсом

• Knowledge of microservices architecture and distributed systems.
• Hands-on experience with Kubernetes.
• Experience with gRPC.
• Experience with message-brokers (RabbitMQ, Apache Kafka).
• Knowledge of Nest.js.
• Experience with Keitaro/Binom.

Умови роботи
 

• Віддалена робота
• Гнучкий графік роботи
• Система бонусів і плюшок
• Безлімітні відпустка та лікарняні дня

We’re Expanding and Looking for Talented Developers!

Our team specializes in working with startups, starting from the earliest stages of their development. Each project we take on is a unique challenge, requiring innovative and effective solutions. That’s why we always stay at the cutting edge of technology.

We believe that productive work is only possible in a comfortable environment with excellent planning. The best solutions are built on well-thought-out architecture, quality code, and modern technologies.

If these priorities resonate with you, you’ll love being part of our team!

Requirements

• 2+ years of production experience with Rust
• Strong knowledge of asynchronous programming (Tokio, async/await)
• Experience with building cross-platform desktop applications using Tauri (or willingness to learn quickly)
• Experience integrating with external APIs (GitHub, AI services, etc.)
• Solid understanding of memory safety, concurrency, and performance optimization
• Experience working with local filesystems and developer tooling (CLI/terminal integration, xterm/wezterm)
• English proficiency sufficient for reading documentation and writing comments
• Strong communication skills and ability to work in a team
• Self-motivation to deliver effective and elegant solutions
   

Nice-to-Haves

• Basic knowledge of React or Vue.js to collaborate with frontend developers
• Experience with GPU acceleration (wgpu, CUDA, Metal/Vulkan APIs)
• Knowledge of WebAssembly (WASM) for cross-platform modules
• Familiarity with DevOps practices (Docker, CI/CD for desktop apps)
• Experience with other system-level languages (Go, C++, TypeScript)
• Familiarity with AI integration in applications (local inference, MCP protocol, etc.)
   

Responsibilities

• Develop and maintain a cross-platform desktop application in Rust (Tauri core + JS frontend integration)
• Implement deep terminal integration (xterm/wezterm) and interaction with local codebases
• Integrate AI services, GitHub APIs, and our MCP server
• Optimize application performance, including GPU acceleration where applicable
• Deliver high-quality, well-tested, and maintainable code

• Collaborate with frontend developers, Business Analyst, and Project Manager on features and architecture decisions

   

What We Offer

• Possibility to be a part of innovative startups from around the world
• Supportive, understanding, and flexible management
• Paid vacations and sick leave
• Opportunities for professional growth and learning
• A friendly and welcoming team

About the Team

• The team size is 24 members
• Well-organized development process involving project managers and QA
• Every developer specializes in their area (back-end, front-end)
• Dedicated teams for each project
• The team's internal communication languages are Ukrainian or russian

• Please include examples of your code with your application — this will save time for both you and us.
• If you have test results or any test documentation, feel free to share them as well. This will help us evaluate your skills much faster.
• A test task may be assigned before or after the interview.

We’re an experienced affiliate team with a solid internal setup — our own brands, in-house analytics, creative and product teams, and years of media buying expertise. Now we’re looking for a Media Buyer who’s ready to take on traffic acquisition hands-on, run tests, and optimize campaigns across multiple channels. You’re someone who’s data-driven, curious, and always looking for ways to scale what works — while keeping performance metrics in check.

HOW YOU WILL MAKE AN IMPACT:

• Launch, analyze, and optimize paid traffic campaigns across multiple channels;
• Scale campaigns while maintaining target ROI and CPA;
• Test new traffic sources, funnels, and performance strategies;
• Generate hypotheses and improve buying tactics based on data;
• Prepare briefs for creatives with clear testing logic;
• Monitor campaign metrics and report actionable insights;
• Collaborate with analytics, design, and product teams;

WHAT WILL HELP YOU SUCCEED IN THE ROLE:

• 1+ years of hands-on media buying experience;
• Solid understanding of performance marketing metrics (CPA, ROI, ROAS, LTV, etc.);
• Experience managing multiple traffic sources simultaneously;
• Proven ability to scale profitable campaigns;
• Strong analytical mindset and decision-making based on data;
• Team player with ownership mindset and a drive for results.

HOW WE WILL KEEP YOU SMILING

• We offer flexible working hours and remote work setup, enabling you to plan your work around your life and not your life around work!
• We offer unlimited vacation days, and we provide sick leave of paid.
• We are ready to offer relocation support for candidates.
• A competitive compensation that values the skills and experience you bring.
• Employee referral bonus and gifts for your special days.
• Financial support in 50% for learning expenses to help you in your professional growth!
• With us, you will experience a positive atmosphere and a company culture where people are valued above all else. You'll also have the opportunity to participate in fun team-building activities.

What You'll Be Doing

Invoicing & Subscription Management

• Assist customers with billing inquiries and subscription issues.
• Clearly explain pricing tiers, subscription duration, auto-renewals, and license pricing logic.
• Review and adjust subscription periods in TaxDome and Stripe.
• Cancel upcoming renewals and licenses upon request.
• Fix the issues in case when they issues arise because of an incorrectly selected plan, preparing cash reconciliations

Billing System Administration

• Manage workflows in Stripe, including:
  • Subscriptions
  • Invoices
  • Payments
  • Coupons & discounts
  • Disputes
  • Refunds & subscription adjustments
  • Installment and recurring payment plans
• Set up/disable/change and manage promotional offers, custom coupons, and time-limited discounts.
• Monitor automation around invoicing, renewals, and payment failures to ensure accuracy.
• Investigate anomalies in billing behavior and escalate edge cases when necessary.

Communication & Collaboration

• Collaborate with Sales, Customer Success Account Management, CSAM, Support, and Product teams to resolve billing issues.
• Communicate with customers regarding account status, license access, invoices, and billing adjustments.
• Maintain accurate documentation of billing cases and provide regular updates internally.
• Respond to customer inquiries, when required.

Internal Tools & Technical Fluency

• Use the internal admin panel to detect and resolve inconsistencies in subscriptions and payments.
• Write basic SQL queries to retrieve billing data and perform root-cause analysis.
• Understand how data flows between systems (TaxDome ↔ Stripe) and ensure sync integrity.
• Log system changes, eEscalate bugs, and suggest tooling improvements.

Continuous Improvement

• Identify recurring issues and collaborate with Product/Engineering/Support to improve billing workflows.
• Contribute to building an internal knowledge base and playbooks.
• Take ownership of billing integrity, ensuring customers are charged fairly and accurately.

What We're Looking For

• Proven experience working with Stripe or similar billing/subscription systems.
• Strong understanding of SaaS subscription logic, billing cycles, proration, auto-renewals, etc
• Experience with installment management and recurring payment structures — a plus.
• Familiarity with ticketing systems like Zendesk, Jira, or similar.
• Experience in a finance department or SaaS company — highly preferred.
• Excellent communication skills in English (B2+)
• Attention to detail and ability to handle confidential financial data with care.
• Technical fluency: SQL (basic), internal dashboards, and process documentation.
• Fast learner with a proactive mindset and ability to work under pressure during escalations.

Why Join TaxDome?

A global SaaS product used by thousands of businesses

Own and optimize critical billing processes with real impact

Work cross-functionally with Finance, Sales, Product & Engineering

Grow with a fast-scaling, profitable tech company

Help build the infrastructure behind world-class customer experience

Right now, we’re looking for a Node.js Developer to join our team on a part-time basis

DARLY SOLUTIONS is an international IT company specializing in delivering innovative solutions across Fintech, MedTech, SaaS, etc.
With years of experience in web and mobile development, UI/UX design, Quality Assurance, AI, and machine learning, we pride ourselves on creating impactful products that drive success for our clients. Since 2018,
we have successfully completed over 250 projects.
Examples of our work across various domains can be found on our website
- https://www.darly.solutions/
We leverage cutting-edge technologies to craft powerful, forward-thinking solutions tailored to our clients’ needs. Our team is proficient in a diverse range of tools, including Angular, NestJS, React, Vue, PHP, Ruby, Node.js, and many others.

Requirements:

• 3 years of experience as a Backend Developer
• Strong knowledge of Node.js (NestJS 10)
• Experience with PostgreSQL and Supabase
• Familiarity with AdminJS or similar admin panel frameworks
• Understanding of working with databases and QR code generation
• English — Upper-Intermediate (B2) for communication

Responsibilities:

• Develop and maintain backend functionality for web and mobile applications
• Collaborate with another backend developer to ensure smooth delivery
• Optimize database queries and integrations
• Support QR code generation and related features
• Participate in discussions with the team to improve architecture and performance

Key Responsibilities

• Web Application Development: Architect, develop, and maintain responsive web applications using modern front-end and back-end frameworks.
• Clean Code & Testing: Write clean, efficient, and maintainable code; author unit, integration, and end-to-end tests to ensure reliability.
• Data Management: Design and optimize database schemas; manage SQL (e.g., MySQL) and NoSQL (e.g., MongoDB) stores for performance, scalability, and reliability.
• API Integrations: Integrate with third-party APIs (social platforms, payment gateways, ad exchanges) and internal microservices.
• Collaboration & Reviews: Partner with UX/UI designers on user-centric features; conduct and participate in code reviews, driving continuous process improvements.
• Troubleshooting & Support: Diagnose and resolve production issues; monitor application health and implement robust error-handling.

Qualifications

• Experience: Minimum 3 years as a Full Stack Developer (or similar).
• Front-end: Proficient with HTML5, CSS3, JavaScript and at least one modern framework (e.g., React).
• Back-end: Strong in Node.js (TypeScript or JavaScript); familiarity with Python is a plus.
• Databases: Solid understanding of both relational (MySQL, PostgreSQL) and NoSQL (MongoDB) databases.
• Version Control: Daily use of Git; experience in branching strategies and pull-request workflows.
• Soft Skills: Excellent problem-solving, clear written and verbal communication, and a collaborative mindset in agile teams.

Preferred Qualifications

• Ad-Tech Experience: Prior work with advertising platforms, DSPs, or marketing automation.
• Social Media APIs: Hands-on with Facebook (Meta) API, Google Ads API, or similar.
• Cloud & Containers: Experience deploying to AWS, GCP, or Azure; containerization with Docker and orchestration with Kubernetes.
• Agile Methodologies: Comfort with Scrum or Kanban, continuous integration, and delivery practices.

Mr. Booster is an innovative ad platform and full-cycle marketing agency dedicated to boosting brand growth. Agency services include Traffic, SEO, Production, and Marketing, offering everything from driving traffic to creating powerful content and strategies. The company helps businesses reach new heights with smart, scalable solutions.

Responsibilities:

• Maintain and improve a transparent discovery→delivery process: DoR/DoD, Kanban/Jira rituals, Confluence artifacts, Miro/Figma mockups, unified PRD format;
• Align and manage a single roadmap and quarterly planning;
• Build and develop a hypothesis pipeline: formulate hypotheses, define MVPs, success metrics and risks; decompose into PRDs with ACs;
• Collaborate with stakeholders (CPO, development, design, analytics, sales/accounts, key clients); act as the “voice of the product”: prioritization, communicating purpose, aligning expectations;
• Own metrics: product, business, and operational;
• Ensure high-quality documentation: PRDs, flow diagrams, change logs, roles/access, notifications.

Requirements:

• 3+ years in Product (AdTech/MarTech/B2B SaaS/performance advertising);
• Solid understanding of the ecosystem: pixel, retargeting, CPM/CTR/win-rate; experience with API integrations, tracking, and data flow;
• Agile practices, strong skills in PRDs and product decomposition;
• Proficient with tools: Jira, Confluence, Miro, Figma, GA4/Amplitude (at a product level);
• Experience with self-service interfaces (advertiser dashboards / admin panels);
• Product analytics;
• Understanding of video advertising/players (VAST/timeslots) or experience in related B2C products;
• Low/no-code and vibe-coding for rapid prototyping (Cursor / Claude code, etc.).

About us:
Data Science UA is a service company with strong data science and AI expertise. Our journey began in 2016 with uniting top AI talents and organizing the first Data Science tech conference in Kyiv. Over the past 9 years, we have diligently fostered one of the largest Data Science & AI communities in Europe.

About the client:
Our client is an IT company that develops technological solutions and products to help companies reach their full potential and meet the needs of their users. The team comprises over 600 specialists in IT and Digital, with solid expertise in various technology stacks necessary for creating complex solutions.

About the role:
We are looking for an experienced Senior Data Scientist / NLP Lead to spearhead the development of cutting-edge natural language processing solutions for the Ukrainian LLM project. You will lead the NLP team in designing, implementing, and deploying large-scale language models and NLP algorithms that power the products.

This role is critical to the mission of advancing AI in the Ukrainian language context, and offers the opportunity to drive technical decisions, mentor a team of data scientists, and shape the future of AI capabilities in Ukraine.

Requirements:
- Education & Experience: 5+ years of experience in data science or machine learning, with a strong focus on NLP. Proven track record of developing and deploying NLP or ML models at scale in production environments. An advanced degree (Master’s or PhD) in Computer Science, Computational Linguistics, Machine Learning, or a related field is highly preferred.
- NLP Expertise: Deep understanding of natural language processing techniques and algorithms. Hands-on experience with modern NLP approaches, including embedding models, text classification, sequence tagging (NER), and transformers/LLMs. Deep understanding of transformer architectures and knowledge of LLM training and fine-tuning techniques, hands-on experience developing solutions on LLM, and knowledge of linguistic nuances in Ukrainian or other languages.
- Advanced NLP/ML Techniques: Experience with evaluation metrics for language models (perplexity, BLEU, ROUGE, etc.) and with techniques for model optimization (quantization, knowledge distillation) to improve efficiency. Background in information retrieval or RAG (Retrieval-Augmented Generation) is a plus for building systems that augment LLMs with external knowledge.
- ML & Programming Skills: Proficiency in Python and common data science libraries (pandas, NumPy, scikit-learn). Strong experience with deep learning frameworks such as PyTorch or TensorFlow for building NLP models. Ability to write efficient, clean code and debug complex model issues.
- Data & Analytics: Solid understanding of data analytics and statistics. Experience in experimental design, A/B testing, and statistical hypothesis testing to evaluate model performance. Experience on how to build a representative benchmarking framework given business requirements for LLM. Comfortable working with large datasets, writing complex SQL queries, and using data visualization to inform decisions.
- Deployment & Tools: Experience deploying machine learning models in production (e.g., using REST APIs or batch pipelines) and integrating with real-world applications. Familiarity with MLOps concepts and tools (version control for models/data, CI/CD for ML). Experience with cloud platforms (AWS, GCP or Azure) and big data technologies (Spark, Hadoop) for scaling data processing or model training is a plus. Hands-on experience with containerization (Docker) and orchestration (Kubernetes) for ML, as well as ML workflow tools (MLflow, Airflow).
- Leadership & Communication: Demonstrated ability to lead technical projects and mentor junior team members. Strong communication skills to convey complex ML results to non-technical stakeholders and to document methodologies clearly.

Nice to have:
- LLM training & evaluation experience: Hands-on experience of building tokenizers and SFT, RLHF techniques. Knowledge of the evaluation of model toxicity and ethical aspects, hallucinations, security, and building LLM guardrails.
- Research & Community: Publications in NLP/ML conferences or contributions to open-source NLP projects. Active participation in the AI community or demonstrated continuous learning (e.g., Kaggle competitions, research
collaborations) indicating a passion for staying at the forefront of the field.
- Domain & Language Knowledge: Familiarity with the Ukrainian language and context. Understanding of cultural and linguistic nuances that could inform model training and evaluation in a Ukrainian context.
- MLOps & Infrastructure: Experience in working alongside MLOps engineers to streamline the deployment and monitoring of NLP models.
- Problem-Solving: Innovative mindset with the ability to approach open-ended AI problems creatively. Comfort in a fast-paced R&D environment where you can adapt to new challenges, propose solutions, and drive them to implementation.

Responsibilities:
- Lead end-to-end development of NLP and LLM models - from data exploration and model prototyping to validation and production deployment. This includes designing novel model architectures or fine-tuning state-of-the-art transformer models (e.g., BERT, GPT) to solve project-specific language tasks.
- Analyze large text datasets (Ukrainian and multilingual corpora) to extract insights and build robust training datasets.
- Guide data collection and annotation efforts to ensure high-quality data for model training.
- Develop and implement NLP algorithms for a range of tasks such as text classification, named entity recognition, semantic search, and conversational AI.
- Stay up-to-date with the latest research to apply transformer-based models, embeddings, and other modern NLP techniques in the solutions.
- Establish evaluation metrics and validation frameworks for model performance, including accuracy, factuality, and bias.
- Design A/B tests and statistical experiments to compare model variants and validate improvements.
- Deploy and integrate NLP models into production systems in collaboration with engineers - ensuring models are scalable, efficient, and well-monitored in a real-world setting.
- Optimize model inference and troubleshoot issues such as model drift or data pipeline bottlenecks.
- Provide technical leadership and mentorship to the NLP/ML team.
- Review code and research, uphold best practices in ML (version control, reproducibility, documentation), and foster a culture of continuous learning and innovation.
- Collaborate cross-functionally with product managers, software engineers, and MLOps engineers to align NLP solutions with product goals and infrastructure capabilities.
- Communicate complex data science concepts to stakeholders and incorporate their feedback into model development.

The company offers:
- Competitive salary.
- Equity options in a fast-growing AI company.
- Remote-friendly work culture.
- Opportunity to shape a product at the intersection of AI and human productivity.
- Work with a passionate, senior team building cutting-edge tech for real-world business use.