Jobs at Djinni

Our mission is to make learning technology accessible, easy and fun for users across the world! We are creating next-generation education platform for learning software development and intent to become a leading player in that market.

Are you interested in participating in the development of a platform that will be used by millions of users around the world? Do you want to help thousands of people enter the world of programming, data analysis, machine learning? Do you want to work in a team where your opinions and ideas really matter? If your answer to all the questions is yes, it's a match!
Currently we’re looking for a full-time Course Creator!

Responsibilities:

- Designing and creating various types of educational materials
- Monitoring the latest technological developments to quickly create new and, most importantly, relevant materials
- Collecting and analyzing feedback on developed materials
- Proposing and managing innovative ideas to improve not only the content team's performance but also the entire project
- In addition to the mandatory duties, there is the opportunity to engage in additional areas to some extent—like analytics, delve into content for social networks, or work on animations for courses, etc.

Requirements:

- Passion for educating others (experience as a tutor or teaching assistant is a plus)
- It is very important to have a main profile in a technical discipline - mathematics, computer science, or other related fields
- Academic background in mathematics, computer science, or other related fields. We are open to candidates with unfinished degrees (currently in progress)
- Video editing skills are also valued as the platform is moving towards a video format
- Creativity, artistic perspective
- Strong analytical and critical thinking
- English upper intermediate or higher;
- Ability to explain complex concepts in simple language;
- Thorough attention to detail.

What do we offer:

- Work within an ambitious team on a socially impactful education product.

- 20 working days of paid vacation per year, plus public holidays.

- An office with a reliable shelter, generators, satellite internet, and other amenities.

- Access to our corporate knowledge base and professional communities.

- Compensation for English language learning, external training, and courses.

- Medical insurance and full sick leave compensation.

- Company doctor and massage in the office.

- Sports activities: running, yoga, boxing, and more.

We are looking for a strong, productive engineer to work directly with our Lead Engineer and CTO.

The role is backend-focused, with significant responsibility for asynchronous processing and integrations, while also implementing frontend integrations in React / Next.js, including GraphQL queries, mutations, and UI components (minor effort).

This is not an entry-level role. You are expected to be comfortable working with TypeScript, NestJS, and React / Next.js in production, within an AWS-based environment. You’ll work with the following technologies:

Backend

• Node.js, TypeScript, NestJS
• Event-driven patterns
• GraphQL (Apollo Server) as BFF 
• PostgreSQL (MicroORM), Redis

Async & Messaging

• RabbitMQ
• Producers, consumers, retries, idempotency, message durability 

Frontend

• React, Next.js (App Router)
• GraphQL (Codegen, Apollo Client)
• Ant Design, SCSS Modules

Infrastructure

• AWS (EKS), Cloudflare
• Terraform
• gRPC (Protobuf)

What You’ll Do:

• Build backend features end-to-end: implement business logic, asynchronous workflows, and data synchronization.
• Design and implement GraphQL resolvers and schemas used directly by the frontend.
• Build and maintain integrations with external systems (CRMs, vendors, APIs), including authentication, retries, and failure handling.
• Implement frontend integrations in React / Next.js: write GraphQL queries and mutations and connect them to UI components.
• Provision and use infrastructure resources required by your features using Terraform (you don’t own infra, but you use it).
• Ensure production readiness: logging, tracing, and tests where they matter.

Requirements

• 4+ years of professional engineering experience.
• Strong hands-on experience with TypeScript and Node.js.
• Production experience with NestJS and GraphQL.
• Comfortable working with React / Next.js beyond basic UI changes.
• Experience integrating with third-party APIs, including OAuth and rate limiting.
• Practical understanding of AWS and ability to read and work with Terraform.
• Security-aware mindset when working with user data and identities.

Nice to Have

• Experience with Salesforce or other enterprise CRM APIs
• Experience with authorisation flows, token and session management, OAuth 2.0
• Experience working on projects with strict compliance requirements (e.g. HIPAA, SOC 2, ISO 27001).
• Interest in or experience with DevOps or information security

What We Offer

• Direct collaboration with the Lead Engineer and CTO.
• A greenfield system with no legacy constraints.
• High ownership and minimal process overhead.
• Fully remote work.
• High-end MacBook (M5 Pro) after the trial period.
• Relocation support to Australia after long-term collaboration.

We are looking for a skilled Senior UX/UI Designer with expertise in motion design and animation to create engaging casino game experiences. If you understand slot game mechanics, animation principles, and player psychology, we want to hear from you!

Responsibilities

• UX/UI Motion Design — Create high-quality animations and effects for an immersive player experience.
• Game Animation Development — Design animations that enhance slot game mechanics and player engagement.
• Responsive Design — Adapt animations for desktop and mobile platforms.
• Player Psychology & Engagement — Implement animations that maintain excitement without overstimulation.
• Technical Implementation — Integrate animations into HTML5 slot games and optimize performance.
• Compliance & Regulations — Ensure animations meet iGaming regulatory standards.

• Collaboration & Documentation — Communicate effectively with the team and maintain clear documentation.

   

Requirements

Must-Have:

• 3+ years of UX/UI design experience with a motion design focus.
• Strong knowledge of animation principles (Disney’s 12 Principles).
• Experience with Spine 2D, DragonBones for game animation.

• Proficiency in Adobe After Effects, Photoshop & Illustrator.

   

Nice-to-Have:

• Experience with particle effects & VFX for big-win moments.
• Understanding of slot game mechanics and UI clarity.

• Knowledge of HTML5 animation troubleshooting.

   

Why Join Us?

• Work on exciting iGaming projects with a talented team.
• Creative, innovation-driven environment.
• Competitive salary and remote-friendly setup.

If you’re passionate about motion design in gaming, apply now!

Product Engineer

AI-Enabled Products · Full-Stack · End-to-End Ownership
 Fully Remote (Europe preferred)
 Independent Contractor · 50–70% initially (ramping to full-time within 6–12 months)
 Reports to Founder & CEO

You’re Not a Cog. You’re the Engine.

Most engineering roles give you a ticket queue. This one gives you a product.

At Informed Decisions, you’ll take real ownership over how a meaningful B2B SaaS platform gets built- from architectural decisions to AI integrations to what ships on Friday. You’ll work directly with the founder, with real influence over technical direction, and you’ll see the impact of your work in how organizations hire and how people’s careers unfold.

If you’ve been waiting for a role where your judgment actually matters, this is it.

What We’re Building

Hiring is broken in ways most companies don’t even measure. Informed Decisions addresses this by combining IO psychology with data-driven product design- including statistical models, analytics, and AI-enabled capabilities- to make interviews fairer, more consistent, and truly predictive of on-the-job success.

We help organizations improve interviewer skills, reduce bias, and connect hiring decisions to real post-hire outcomes. The product is live, the problem is real, and the work is technically interesting.

What You’ll Own

This is a full-stack product engineering role. You’ll work across the system with .NET and Python on the backend, APIs and integrations, AWS infrastructure, and AI-enabled workflows embedded into real product features.

Your first major responsibility is taking full ownership of a live, production product- from database and backend services through APIs and application layers- currently developed with an external vendor. This includes deeply understanding what’s been built, identifying what needs to evolve, and establishing the engineering practices and standards that will carry the platform forward.

This is an active system with real users, real data, and real consequences. We’re looking for someone who can navigate this transition with technical rigor, sound judgment, and a strong sense of ownership.

On the product side, you’ll design and ship features end to end. That means writing the code, making architectural calls, defining what “done” looks like, and owning production quality.

On the AI side, you’ll build workflows that integrate LLMs and AI services into the product in ways that are reliable, observable, and grounded in measurable hiring outcomes.

Beyond the core platform, you’ll make judgment calls about when a customer need belongs inside the platform and when a standalone tool or application is the right answer- and then you’ll build it.

Engagement Model

This role starts as an independent contractor engagement, scoped at approximately 50–70% capacity.

The intent is to increase scope and ownership over time, with a planned ramp toward full-time (100%) involvement within 6–12 months, based on mutual fit, impact, and company needs.

You’ll Thrive Here If…

• You’ve shipped production systems and can show your work through code, products, or a real portfolio
  
   
• You’re comfortable owning decisions when there’s no one to escalate to
  
   
• You’ve worked with .NET and Python in real production environments
  
   
• You’ve integrated AI or LLM services into live products, not just prototypes
  
   
• Remote-first work suits how you operate- you create structure rather than relying on it
  
   
• Your English is fluent (spoken, written, and reading), strong enough to communicate technical decisions clearly across time zones
  
   

Experience with early-stage SaaS, third-party integrations, and complex systems is a strong advantage. The tradeoffs are real, and the work reflects that.

Why This Role, Why Now

• Direct line to the founder, with real influence on product direction
  
   
• Work tied to measurable outcomes: fairer hiring and better decisions
  
   
• A remote environment built on trust, not surveillance
  
   
• High ownership from day one across a technically deep and socially meaningful problem
  
   

How We Evaluate

We don’t screen on credentials. We evaluate based on what you’ve built and how you think. Come ready to show your work.

Informed Decisions is fully remote and welcomes contractor applications from across Europe.

Sounds relevant? Apply here:

https://informedecisions.app/access/05ea079f-84e2-4027-98ae-ea6c4c2c0859/

An international IT holding with 11+ years in the market and a team of 390+ employees is scaling. 
The holding is launching a new business unit focused on traffic monetization and affiliate partnerships. The Head of Affiliate Sales will be responsible for building this direction from the ground up and developing a scalable model for monetizing traffic generated by the internal media buying teams.

📋 Key responsibilities and your contribution:

• Develop and implement the company’s traffic resale strategy (Resales Direction).
• Manage internal traffic monetization channels, including Facebook Ads, ASO, SEO, and other performance marketing sources.
• Build and scale a traffic resale ecosystem through affiliate networks, direct advertisers, and media buying teams.
• Identify, onboard, and develop relationships with new advertisers, affiliate networks, and affiliates to scale traffic sales.
• Conduct negotiations and partnership agreements, including commercial terms and payout conditions.
• Manage traffic unit economics, ensuring control over ROI, CPA, CPL, margins, and channel efficiency.
• Analyze traffic performance and continuously optimize monetization funnels.
• Build and develop the team within the direction (affiliate managers, sales managers, traffic managers).
• Establish and optimize traffic sales and distribution processes between advertisers and partners.
• Ensure traffic quality and compliance with partner program requirements.
• Work with analytics and tracking systems to evaluate performance and support decision-making.
• Develop long-term partnerships with key advertisers and affiliate networks.
• Monitor the affiliate and performance marketing market, identifying new traffic sources and traffic monetization models.
• Monitor the affiliate and performance marketing landscape to identify new traffic sources and monetization models.
   

📚 Your qualifications:

• 3–5+ years of experience in iGaming affiliate marketing or traffic arbitrage, preferably in a leadership role.
• Deep understanding of the digital traffic ecosystem, including Facebook Ads, affiliate networks, ASO, SEO, and other performance marketing channels.
• Experience in traffic monetization.
• Hands-on experience working with internal traffic sources and scaling them.
• Strong understanding of traffic unit economics, including ROI, CPA, CPL, LTV, margins, and funnel optimization.
• Experience in building and managing teams (sales managers, traffic managers, affiliate managers).
• Strong negotiation skills and experience in closing partnership agreements with advertisers and affiliate networks.
• Ability to build and optimize traffic resale processes.
• Experience working with trackers, analytics platforms, and BI tools (e.g., Keitaro, Power BI, Google Analytics, etc.).
• Strong analytical skills and the ability to make data-driven decisions.
• English proficiency sufficient for negotiations and working with international partners.
   

➕ Nice to have:

• Experience in traffic reselling.
• An established network of contacts among advertisers, affiliate networks, affiliates, and media buyers.
• Experience working with multiple GEO tiers (Tier 1–3).
   

Benefits:

⭐ Days of recovery: 20 paid vacation day per year and unlimited sick leave days.
⭐ Health: corporate medical insurance, a company psychologist and a Cafeteria of Benefits for personal wellness choices.
⭐ Education: a variety of foreign languages course for you to choose from. Also we are open for your development and you can choose different courses /training for improving your skills.
⭐ Compensation: additional benefits that can be used according to company policy, e.g. paid business trips, international conference opportunities, lunch perks at our offices etc.
⭐ Work Environment: work remotely or from one of our offices in Cyprus, Portugal, Poland, equipped with the equipment you’ll need for success.

Our client is an international product-based IT company specializing in the iGaming industry. Founded in 2014, the company has been successfully operating on the market for more than 11 years, bringing together a team of 390+ professionals. Starting as a leader in the CIS region, the company is now actively expanding on a global scale.

We are currently looking for a Middle/Senior Media Buyer to join the media buying team and work with scalable traffic across different GEOs and tiers.

📋 Key responsibilities and your contribution:

— Launch, manage, and scale Facebook advertising campaigns across Tier 1 / Tier 2 / Tier 3 GEOs.

— Full ownership of traffic performance and financial results, including PnL responsibility.

— Analyze and optimize key performance metrics: ROI, CR, CTR, CPM, CPA, PnL.

— Work closely with offers, creatives, agencies, and internal teams to improve campaign efficiency.

— Test and adapt strategies based on changes in GEOs, offers, platforms, and market conditions.

— Identify bottlenecks in funnels and processes, propose and implement optimization solutions.

— Maintain clear communication, task-setting, and feedback loops within the team.

— Take an active, hands-on role in both arbitrage and product-oriented media buying directions.

📚 Your qualifications:

— 3+ years of experience in media buying / traffic arbitrage.

— Deep understanding of Facebook Ads ecosystem and traffic acquisition mechanics.

— Proven experience managing monthly budgets from $50,000.

— Strong analytical mindset and confidence working with performance metrics and profitability models.

— Hands-on experience with analytics and tracking tools such as Power BI, Google Sheets, Voluum, Binom, Keitaro (or similar).

— Experience working with offers, creatives, and external partners (agencies, vendors).

— High level of responsibility for results and readiness to work with CRM and PnL models.

— Strong communication skills and ability to give and receive constructive feedback.

— Critical thinking, initiative, flexibility, and adaptability in a fast-changing environment.

Benefits:

⭐ Days of recovery: 20 paid vacation day per year and unlimited sick leave days.
⭐ Health: corporate medical insurance, a company psychologist and a Cafeteria of Benefits for personal wellness choices.
⭐ Education: a variety of foreign languages course for you to choose from. Also we are open for your development and you can choose different courses /training for improving your skills.
⭐ Compensation: additional benefits that can be used according to company policy, e.g. paid business trips, international conference opportunities, lunch perks at our offices etc.
⭐ Work Environment: work remotely or from one of our offices in Cyprus, Portugal, Poland, equipped with the equipment you’ll need for success.

⭐ Full freedom and hands-on involvement: opportunity to work across multiple directions — arbitrage, product media buying, various GEOs and tiers — without being locked into one narrow scope.

We are looking for a skilled Senior UX/UI Designer with expertise in motion design and animation to create engaging casino game experiences. If you understand slot game mechanics, animation principles, and player psychology, we want to hear from you!

Responsibilities

• UX/UI Motion Design — Create high-quality animations and effects for an immersive player experience.
• Game Animation Development — Design animations that enhance slot game mechanics and player engagement.
• Responsive Design — Adapt animations for desktop and mobile platforms.
• Player Psychology & Engagement — Implement animations that maintain excitement without overstimulation.
• Technical Implementation — Integrate animations into HTML5 slot games and optimize performance.
• Compliance & Regulations — Ensure animations meet iGaming regulatory standards.

• Collaboration & Documentation — Communicate effectively with the team and maintain clear documentation.

   

Requirements

Must-Have:

• 3+ years of UX/UI design experience with a motion design focus.
• Strong knowledge of animation principles (Disney’s 12 Principles).
• Experience with Spine 2D, DragonBones for game animation.

• Proficiency in Adobe After Effects, Photoshop & Illustrator.

   

Nice-to-Have:

• Experience with particle effects & VFX for big-win moments.
• Understanding of slot game mechanics and UI clarity.

• Knowledge of HTML5 animation troubleshooting.

   

Why Join Us?

• Work on exciting iGaming projects with a talented team.
• Creative, innovation-driven environment.
• Competitive salary and remote-friendly setup.

If you’re passionate about motion design in gaming, apply now!

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.

We’re looking for a Sales Manager to become a key player in our business development efforts. You’ll work across multiple outbound channels, lead and mentor a lead ge team, close deals, and ensure a smooth handover to the delivery team.
 

Our sales engine is already rolling with two 2 channels and 2 dedicated lead generators:

• Upwork: 3 Top-Rated Plus accounts targeting different technologies.
• LinkedIn: 3 active accounts for outreach and lead generation.
• Email: Warmed-up domains and full infrastructure for cold outreach.

Our Tech Stack:

• Sales tech stack: Lemlist, HeyReach, Instantly, FullEnrich.
• CRM & Tools: HubSpot, LinkedIn Sales Navigator.

What You’ll Be Doing:

• Manage, mentor, supervise 2 lead generators, oversee KPIs, provide feedback, and optimize their performance.
• Close Deals and work closely with Upwork lead generators—support bidding, qualify leads, and close contracts
• LinkedIn Outreach guide the LinkedIn lead generation process using automation tools to book qualified calls
• Run Email Campaigns. Launch and manage cold email campaigns based on ICP; iterate and refine based on data
• Collaborate with PM, CTO, and delivery teams to craft proposals, estimates, and pre-sales materials
• Maintain sales reporting process and present performance updates to CEO

What We’re Looking For:

• Familiarity with web development outsourcing (WordPress CMS, modern front-end frameworks, design principles, SDLC).
• Fluent English with strong communication, presentation, and rapport-building skills.
• Solid understanding of the full sales lifecycle and qualification frameworks (e.g., BANT, MEDDIC, SPIN).
• Hands-on experience with GTM tools like Lemlist, HeyReach, Instantly, Clay, etc.
• Proven track record in building and A/B testing outreach sequences and optimizing based on performance.
• Experience in LinkedIn social selling and relationship-building strategies.
• Familiarity with web development outsourcing is a big plus.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote. 

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.

We are looking for a Lead Generation Specialist who will work primarily on UpWork. As a lead generator, you’ll help us generate qualified sales opportunities from Upwork, qualify customers, and assist the Sales Manager in closing deals.

Responsibilities:

• Scan & qualify opportunities on UpWork across different categories: UI/UX Design, No-Code Development, Web Development, and Data Science.
• Create high-quality bids and proposals.
• Track conversion rates, review analytics, and keep the CRM & pre-CRM up to date.

• Qualify customer replies and book calls with SQL.

   

Requirements:

• 2+ years of experience in UpWork lead generation.
• Upper-intermediate to advanced English proficiency, with fluent written communication.
• Ability to write concise, value-based proposals.
• Understanding of UX/UI Design and popular frameworks, approaches, and trends in Web Development.
• Deep understanding of lead qualification processes and reply management.
• High proficiency with Google Sheets, including filtering, combining lead databases, using formulas, and preparing .CSV files.

• Experience with HubSpot.

   

Would be a plus:

• Experience with LinkedIn email generation and campaign tools (such as Instantly, Smartlead, or similar), LinkedIn automation tools (such as Lemlist, HeyReach, Phantom Buster), and enrichment platforms (such as FullEnrich or similar).
• Experience in scraping data from various sources, building lead lists, enriching them, and validating emails using automation tools.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote. 

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.
 

We are looking for a CRM Integration Analyst who is ready to set up business automations and design CPQ flows for companies.
This role combines system analysis, CRM configuration, workflow design, and client communication.

Responsibilities:

• Analyze clients’ existing software landscape, including systems, APIs, and documentation.
• Join client calls to gather requirements, understand business processes, and align on solutions.
• Gather and analyze requirements for CRM integrations and automation solutions.
• Translate business and technical requirements into scalable integration architectures.
• Design and configure business automations and CPQ (Configure, Price, Quote) flows.
• Recommend optimal combinations of software tools to support client business processes.
• Prepare technical specifications for CRM setup and integrations.
• Configure CRM systems and connected tools, including workflows, automations, and integrations.
• Support implementation and ensure smooth adoption of new systems.
• Provide ongoing technical assistance and resolve issues during system usage.

Requirements:

• Upper-Intermediate English (B2+) and fluent Ukrainian.
• Experience in CRM configuration, software integrations, technical support, or basic programming.
• Understanding of business processes (sales, marketing, finance, operations).
• Strong analytical mindset and ability to build structured logic and workflows.
• Ready to take ownership and communicate directly with clients.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote.

Description of the Project and Team:

The Senior Forward-Deployed Engineer bridges the gap between our AI platform and real-world client environments. This role combines deep technical expertise with strong client-facing skills to deliver customized AI implementations, lead technical discovery, and ensure successful solution adoption.

You will work closely with enterprise clients, internal AI engineers, Solution Designers, and leadership teams to design, prototype, and deploy advanced AI solutions, often in ambiguous and fast-changing environments. This is a hands-on role for someone who thrives at the intersection of engineering, architecture, and client collaboration.

Location: Remote / Hybrid (Ukraine / EU), with occasional international business travel to client sites

Responsibilities:

Client Engagement & Technical Leadership

• Lead technical discovery sessions and requirements workshops with clients
• Design and architect custom AI solutions tailored to client needs
• Serve as the primary technical point of contact for assigned client accounts
• Present technical solutions to C-level and senior stakeholders

Solution Implementation

• Implement, customize, and deploy AI solutions in client environments
• Integrate LLM vendors and platforms with client systems and data sources
• Develop Proofs of Concept (PoCs) and MVPs to validate solution approaches
• Troubleshoot and resolve complex technical issues in production environments

AI-Augmented Development

• Lead AI-augmented development practices within project teams
• Leverage GenAI tools for rapid prototyping and solution acceleration
• Design and implement Agentic systems and RAG pipelines
• Evaluate and recommend AI tools and technologies for specific use cases

Team Leadership & Mentoring

• Mentor Solution Designers and software engineers
• Conduct code reviews and architecture reviews
• Contribute to technical standards and engineering best practices
• Support presales activities with technical expertise and solution demos

Required Qualifications:

Experience

• 3+ years in software development
• 2+ years in client-facing technical roles (Solutions Engineer, Technical Consultant, FDE, etc.)
• 1+ year of hands-on experience with LLMs / GenAI technologies
• Proven track record of successful project deliveries

Portfolio Requirements

• Complex system implementations (architecture decisions, trade-offs, outcomes)
• Client success stories showing how technical solutions solved business problems
• AI / GenAI project experience (LLM integrations, RAG systems, AI-powered tools)
• Open-source contributions or technical writing (optional, but highly valued)

Technical Skills

• Software Architecture: Scalable, maintainable systems; microservices and event-driven architectures
• Python Development: Production-grade Python, async programming, API development
• LLM / GenAI Integration: RAG systems, prompt engineering, LLM APIs (OpenAI, Anthropic, Azure OpenAI)
• API Design & Integration: REST, GraphQL, webhooks, third-party APIs
• Databases: SQL optimization; vector databases (Milvus, Pinecone, Weaviate, pgvector)
• Cloud Platforms: AWS or Azure, serverless architectures, Docker, Kubernetes
• DevOps & CI/CD: GitHub Actions, deployment pipelines, infrastructure as code
• Analytical Thinking: Complex problem decomposition, root cause analysis, system optimization
• Business Analysis: Requirements elicitation, process mapping, stakeholder management, ROI analysis

AI-Augmented SDLC Skills

• AI Coding Assistants (Expert): Replit, Claude Code, Cursor, GitHub Copilot
• AI Output Validation (Expert): QA of AI-generated code and content
• Prompt Engineering (Advanced): Few-shot learning, chain-of-thought prompting
• AI Architecture Design (Advanced): RAG pipelines, agent systems, multi-model orchestration

Soft Skills

• Strong client communication skills (assessed via role-play)
• Clear and confident technical presentation skills (assessed via live demo)
• Problem-solving mindset (assessed via technical case study)
• Leadership and mentoring abilities (assessed via behavioral interview)
• High adaptability to ambiguity and changing requirements

Languages

• English: Upper-Intermediate+ (B2/C1) or higher
• Ukrainian: Native or C1 required

Education

• Bachelor’s degree in Computer Science, Software Engineering, or a related field

Nice to Have:

• Specification-driven development using AI-assisted requirements and documentation workflows
• Master’s degree or relevant certifications (AWS, Azure, AI/ML)

We are delighted to provide you with the following benefits:

• Opportunities for growth and development within the project
• Flexibility in scheduling
• Stable employment
• Legal assistance
• Paid time off for vacation and sick leave

As a Senior ML Engineer, you will work on retention and churn prediction models built on large-scale behavioral datasets.
You will focus on feature engineering, model development, and building reliable training and batch inference pipelines that transform player activity data into production-ready predictive systems.
This role combines strong analytical thinking with practical ML engineering skills and close collaboration with the ML Lead.

Responsibilities

• Build and improve churn and retention prediction models using player behavioral data
• Design time-based features (rolling windows, aggregates, decay metrics)
• Train, validate, and iteratively improve gradient boosting models
• Develop reproducible training and batch scoring pipelines
• Analyze model performance and refine feature sets

• Support deployment of models into production scoring services

   

Requirements

• 4+ years of experience in ML Engineering / MLOps with production systems.
• Strong Python for ML and data processing (NumPy, pandas, scikit-learn)
• Experience with gradient boosting models (CatBoost, XGBoost, LightGBM)
• Experience building predictive models on tabular event data (churn, retention, risk)
• Strong understanding of time-based feature engineering and leakage-safe modeling
• Experience building ML training and batch inference pipelines
  Strong analytical and statistical thinking

Would Be a Plus

• Experience with behavioral feature engineering (rolling windows, aggregates)
• Experience with clustering or user segmentation
• Experience deploying ML services (FastAPI, Docker)
• Experience with ML lifecycle tools (MLflow or similar)
• Experience with workflow orchestration tools (Airflow, Prefect, Dagster)
• Experience with AWS or similar cloud environments
• Experience with deep learning frameworks (PyTorch / TensorFlow)

Tech Stack

• Python, NumPy, pandas, scikit-learn
• CatBoost / XGBoost
• SQL
• FastAPI, Docker
• MLflow (or similar)
• AWS or similar cloud environment

What We Offer

• Full ownership of a greenfield ML platform.
• Direct impact on revenue-driving retention systems.
• High level of autonomy in technical decisions.
• Competitive compensation.
• Flexible working format.
• Opportunity to shape the ML engineering foundation of the product.

Our Customer:

Our customer is a global, data-driven digital advertising technology company operating at large scale across mobile apps and web platforms.
 

Your Tasks:

• Analyze large, complex datasets to uncover patterns, insights, and business opportunities;
• Design, build, and own scalable, end-to-end data pipelines;
• Develop and productionize advanced machine learning models and algorithms, particularly in monetization-related domains;
• Build and maintain data models for real-time (online) processing;
• Contribute to the creation of new data-driven products and continuously improve existing ones;
• Collaborate with Product, BI, Analytics, DevOps, R&D, and Marketing teams to deliver complete solutions;
• Lead full production releases, including requirements analysis, testing, monitoring, result evaluation, and rapid response to critical issues.
   

Required Experience and Skills:

• 6+ years of experience as a Data Scientist with a strong foundation in machine learning concepts and models;
• Previous experience in the Ad-Tech industry;
• Hands-on experience working on large-scale, high-load systems processing billions of requests per second;
• Hands-on experience with Python including writing production-ready code and working with modern Python frameworks and tooling;
• Experience with data science / ML libraries and models, such as regression and classification models (e.g. XGBoost, LightGBM), recommendation systems, and related ML techniques;
• Solid understanding of databases and SQL for data analysis and retrieval;
• Experience with monitoring and alerting tools such as Grafana and Kibana;
• Proven experience working in real-time / online environments;
• Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Statistics, or a related field;
• Strong end-to-end ownership mindset: ability to take solutions from research and experimentation through implementation and production;
• Fluent English with strong communication and collaboration skills.
   

Would Be a Plus:

• Familiarity with the programmatic advertising ecosystem (DSPs, SSPs, ad exchanges);
• Experience with relational databases (e.g. Vertica, VoltDB) and non-relational databases (e.g. MongoDB);
• Experience working with PMML.

Working conditions

5-day working week, 8-hour working day;

Remote work.

Admiral Studios is a fast-growing Ukrainian IT outsourcing company, specializing in web development, mobile development, UI/UX, and SEO.

We embrace the latest and most advanced technologies: Node.js, React, Laravel, Shopify, Python, and WordPress.

We create quality projects for clients in the US, Europe, the UK, and Canada 🌍, especially Healthcare, Real Estate, and E-commerce projects.

Currently, our team consists of more than 60+ skilled experts 👨‍💻, and we are constantly growing.

We’re looking for a practical, hands-on Marketing Specialist who enjoys working directly with outreach and lead generation and feels comfortable in a fast-paced, flexible environment.

This role is focused on execution, testing, and close collaboration with Sales, rather than high-level brand or campaign management. 

🎯 For a perfect match, we expect:

• 1+ year of experience in marketing, lead generation, or outreach
• Hands-on experience with Email marketing and basic automation tools
• Confident use of LinkedIn (filters, outreach workflows)
• Ability to independently launch and manage LinkedIn & Email campaigns
• Experience working closely with Sales (lead validation, outreach support, campaign coordination)
• Strong hypothesis-driven approach: testing ideas, analyzing results, iterating
• English level: Intermediate or higher

💎 Nice to have:

• Experience building or optimizing marketing processes
• Experience with additional outreach channels or segmentation tools
• Analytical thinking and willingness to experiment

• Basic familiarity with Shopify or e-commerce

   

💼 Duties & Responsibilities:

• Launching and managing LinkedIn and Email outreach campaigns
• Testing new approaches, niches, and messaging strategies
• Supporting Sales with outreach tasks and lead qualification
• Identifying and validating relevant leads
• Running small experiments and optimizing campaign performance
• Suggesting improvements to workflows and outreach processes

Why Join Admiral Studios?

⭐️Growth-Oriented Environment – value efficiency, flexibility, and results

🤝Team Spirit – Regular corporate online & offline events to keep the team connected
📚Professional Development Support – we provide:

• A structured Performance Review system
• Access to an internal knowledge library
• Career growth opportunities with a clear development plan
• A budget for improving work processes and implementing new ideas

🧘Work-Life Balance – Enjoy a flexible work schedule and a fully remote work model
✅Paid Time Off – 20 vacation days + 10 sick leave days per year

Hiring steps: Screening — Test Task — Tech Interview — СEO Interview — Job Offer 

If your experience and skills match our candidate scorecard, the recruiting team will contact you within 5 business days 💙

Don't forget to provide your Telegram nickname for contact 

About Us…

In 2005, brothers Dimitri and Steve Osler set out to reimagine how businesses communicate, and that vision became Wildix. Today, from our headquarters in Tallinn, Estonia, Wildix is one of the world’s fastest-growing UCaaS companies, with 300+ team members from 15+ nationalities, working across Europe, the UK, the Americas and beyond. We serve businesses in 135+ countries through a partner-first ecosystem, delivering secure, intuitive solutions that keep companies connected, productive and ready for what’s next.

At Wildix, we don’t just build technology, we live it. As a remote-first company, we rely on our own platform every day to collaborate globally and innovate fast. With steady growth and a strong foundation, we offer real opportunities to advance your career as we scale, making an impact in a global team that’s shaping the future of work.

At Wildix, our mission is clear: Empower companies worldwide with seamless communication solutions that drive productivity, efficiency, and growth.

About The Role…

We are looking for an experienced Infrastructure Security Engineer to strengthen and harden our AWS-based infrastructure. This role will focus on designing, implementing, and continuously improving our security posture, ensuring compliance with best practices, and proactively identifying and mitigating risks across our cloud environment.

What You Will Do…

• Drive continuous security improvements in AWS based on SIP findings.
• Maintain “100% Green” status in AWS Trusted Advisor and Security Hub.
• Own IAM security, enforcing MFA, auditing admin access, rotating keys, and implementing least-privilege roles.
• Manage temporary privileged access workflows to ensure secure, time-bound access.
• Lead the lifecycle of infrastructure security findings, from triage to remediation and verification.
• Build and operate centralized logging and SIEM for full visibility and threat response.
• Collaborate with DevOps/SRE teams to embed security into provisioning and deployments.
• Coordinate AWS security assessments and penetration testing, driving remediation.
• Provide security guidance for architecture and new services, ensuring best-practice implementation.
• Be available during working hours: 10:00–19:00 UA Time (09:00–18:00 CET).
  
   

What You Will Bring…

• 7+ years in Infrastructure Security, Cloud Security, or Cloud Engineering roles.
• Deep expertise in AWS security services (IAM, VPC, Control Tower, Security Groups, GuardDuty, Config, KMS, WAF).
• Hands-on with Infrastructure-as-Code security (Terraform, CloudFormation) and CI/CD pipeline hardening.
• Solid understanding of AWS network architecture and secure networking practices.
• Skilled in monitoring, logging, and incident response in cloud environments.
• Knowledge of cloud compliance frameworks (ISO 27001, SOC 2, CIS Benchmarks).
• Experienced in threat modeling, vulnerability management, and remediation.
• Practical implementation of zero-trust and least-privilege principles.
• Conduct security reviews of architecture and configurations.

Why You’ll Love It Here

👫 Work with a Supportive, High-Performing Team – We believe in trust, autonomy, and working with bright, passionate individuals who drive real impact.

🌍 A Truly International Workplace – Our diverse and inclusive team ensures you’ll always feel connected and supported, no matter where you are.

🚀 Shape the Future of Global Communication – Be part of a team transforming how businesses operate in an era of remote work and AI-powered collaboration.

💼 Join a Profitable & Stable Company – We’re not a startup experiment, we’re a two decade old success story with sustained profitability, meaning we can back your boldest ideas.

What We Offer

🏖️ Generous Time Off – Take the breaks you need to relax, recharge, and come back inspired.

💻 Top-Tier Tech – Love Mac? So do we! We equip our team with the best tools for success.

🚀 Career Growth & Development – We cover certifications and IT conferences to keep you at the top of your game.

🌱 Well-being Support – We offer access to psychology sessions to support your mental and emotional health

Happy with them? Our Benefits are country-specific. You can ask your recruiter for more information

Interview Process

🤝 Step 1: Initial Screening – A chat with our Talent Team to understand your background, experience, and motivations (30 mins).

🛠️ Step 2: Technical Interview – A deep dive with your potential manager to assess your skills and fit for the role (60 mins).

We Are Wildix

Wildix is an equal-opportunity employer. We value diversity and welcome all applicants regardless of race, gender, age, religion, or any other characteristic. Everyone is encouraged to apply and is welcome to join our Blue Ecosystem. 

Ready to join us? Apply Now!