Jobs at Djinni

 What you will do

• Participate in QA activities across the full product development lifecycle
• Design test strategies, test cases, and end-to-end scenarios for backend systems and REST APIs
• Execute tests, identify issues, analyze root causes, and verify fixes
• Build and improve automation infrastructure and testing utilities
• Perform API, integration, system, and performance testing
• Monitor quality and performance metrics
• Define and improve QA processes, benchmarks, and quality standards
• Create analytical reports and visualizations to support product validation
• Design KPI-based validation frameworks for optimization performance
• Validate algorithmic outputs using data analysis and quantitative methods

Requirements

• 5+ years of commercial experience as SDET or Test Automation Engineer
• Strong Python skills
• Experience with API testing and microservices
• Experience designing and implementing test strategies
• Strong understanding of functional, integration, and performance testing
• Hands-on experience with NumPy and Pandas
• Experience analyzing large datasets and interpreting results
• Ability to validate algorithmic outputs using data-driven approaches
• Strong problem-solving skills and ownership mindset
• Good communication and collaboration skills

Nice to have

• Experience with Pytest
• Experience with matplotlib, plotly, or seaborn
• Experience with Rust or willingness to learn
• Exposure to GIS projects
• Experience with large-scale datasets or big data environments
• Background in statistics, operations research, or applied mathematics
• Mentoring experience

Tech stack

Python, API Testing, Microservices, NumPy, Pandas, Rust, Kotlin, AWS, Docker, Kubernetes, Terraform

We offer

• Compensation: up to 4800 USD gross
• Salary review once a year based on performance review results
• Cooperation via Diia.City / Diia Employment
• Possibility of reservation from mobilization in accordance with current legislation and internal company policy
• Remote-first work format
• Paid vacation and sick leave (depending on cooperation format / jurisdiction)
• Medical insurance: basic coverage + mental health and vision care (depending on package)
• Well-being initiatives: online yoga / movement sessions and activities to support work-life balance
• Learning and development: courses, webinars, certification support, and internal knowledge-sharing sessions
• Community and events: internal events, meetups, and team activities
• Recognition and gifts: celebration of important milestones, gifts, and thoughtful team attention
• Autonomy and impact: no micromanagement, possibily of make influence on technical decisions and engineering practices
• Supportive professional environment, open communication, and minimum bureaucracy

Our client is an international online casino platform focused on fair gameplay, fast payouts, and a thoughtful product lifecycle. They are currently scaling across Tier 1 markets and building a data-driven marketing ecosystem.
 

We are looking for a Senior Affiliate Manager to drive this growth. You will be responsible for building a high-quality partner network from the ground up - from recruiting top-tier affiliates and managing $100k+ monthly budgets to representing the brand at major international conferences. We need a performance-driven specialist who can turn traffic into long-term ROI.

Requirements:

• Identify, recruit, and onboard high-quality affiliate partners to drive qualified traffic.
• Build and maintain long-term, performance-driven relationships with partners.
• Represent the company at international and local offline conferences and industry events.
• Support partners with technical setup (tracking links, postbacks, integrations, campaign structures).
• Coordinate campaign launches and scale strategies with partners.
• Monitor partner performance and KPIs (FTD, LTV, conversion rates, retention, ROI).
• Analyze traffic quality, fraud risks, and conversion efficiency.
• Optimize budgets and traffic allocation to maximize profitability.
• Calculate and control ROI across all partner channels.
• Provide performance insights and reports to management.
• Support process building and partner management structures.

Experience:

• 3+ years of experience as a Senior Affiliate Manager / Team Lead
• 4+ years of overall experience in affiliate marketing
• Proven experience in the gambling / casino industry (mandatory)
• Strong understanding of casino economics (LTV, RTP, player value, funnel metrics)
• 2+ years of experience with the Tier1 markets
• Hands-on experience managing budgets over $100,000/month
• Strong performance and ROI mindset
• Experience working with tracking platforms, postbacks, and attribution models
• English – B2+ level (working proficiency)

UI/UX Designer (eCommerce Product)

Remote | 8 AM–5 PM PST

We’re hiring a UI/UX Designer to work on large-scale eCommerce platforms serving the US & Canada market.
This role is about clarity, conversion, and reliability — especially during peak seasons.

What you’ll do

• Design key user flows: product pages, checkout, order confirmation
• Improve conversion and reduce friction in critical journeys
• Work with product, engineering, and marketing teams
• Maintain and evolve a scalable design system
• Iterate designs based on data, feedback, and real user behavior

What we’re looking for

• 3+ years of UI/UX design experience (product or eCommerce preferred)
• Strong portfolio showing UX thinking, not just visuals
• Confident with Figma (components, handoff, systems)
• Understanding of CRO, checkout flows, and user behavior
• Ability to explain design decisions in business terms

Nice to have:

• Experience with analytics, heatmaps, or A/B testing
• Basic HTML/CSS knowledge

About us

Lime Vizio builds and operates high-volume gifting and floral platforms for the US & Canada market. Our products handle time-sensitive, emotionally driven purchases — reliability and UX matter.

Want to work on the next big thing in gaming industry?

Who We Are:

Azulon is a dynamic and growing game development agency with a team of 5+ young individuals, primarily based across Europe, including dedicated members in Ukraine. Our craft is creating high-quality gamified experiences worldwide.

Who We Are Looking For:

We are seeking a Unity Developer who is a natural problem-solver with a meticulous approach to their work. You take pride in your craft, strive for excellence in your code, and demonstrate genuine care for the projects you contribute to. You are comfortable working within a team, possess strong communication skills, and are dedicated to delivering high-quality gamified experiences for our diverse clients.

Responsibilities:

• Build and iterate on gameplay mechanics and features within the Unity environment.
• Integrate art and design assets seamlessly into the game.
• Collaborate effectively with team members to ensure smooth project execution.
• Contribute to the continuous improvement of our development processes.
• Explore and implement new technologies and techniques to enhance our games.

Experience:

• Must-Haves:
  • Excellent English Communication Skills: Proven ability to communicate effectively both verbally and in writing in English. This includes clearly articulating technical concepts, participating in meetings, and documenting work.
  • Solid Foundation in Unity Development: Demonstrated experience in developing and contributing to Unity-based projects, showcasing the ability to deliver functional and high-quality code.
• Nice-to-Haves:
  • Web3 Game Development Experience: Previous experience working on game projects that integrated Web3 technologies (e.g., blockchain, NFTs, cryptocurrencies).
  • Familiarity with Notion: Experience using Notion for project management, documentation, or team collaboration.
  • Team Leadership Experience: Previous experience in a leadership role within a development team, such as leading small teams or mentoring junior developers.

Ready to Level Up Your Career? We'd love to hear from you! Please submit your resume and portfolio to to apply.

Want to work on the next big thing in the mobile app industry?

Who We Are:

Azulon is a dynamic and growing development agency with a team of 5+ young individuals, primarily based across Europe, including dedicated members in Ukraine. Our craft is creating high-quality gamified experiences and interactive applications for a global audience. We bridge the gap between traditional software and engaging gameplay.

Who We Are Looking For:

We are seeking a Flutter Developer who is a natural problem-solver with a meticulous approach to their work. You take pride in your craft, strive for excellence in your code, and demonstrate genuine care for the projects you contribute to. You are comfortable working within a cross-functional team, possess strong communication skills, and are dedicated to delivering high-quality, high-performance experiences for our diverse clients.

Responsibilities:

• Develop and iterate on complex UI/UX and gamified features within the Flutter framework.
• Integrate sleek animations, art, and design assets seamlessly into the application.
• Collaborate effectively with team members to ensure smooth project execution across the full development lifecycle.
• Contribute to the continuous improvement of our internal development processes and state management patterns.
• Explore and implement new technologies and techniques to enhance our applications, including third-party integrations and custom plugins.

Experience:

Must-Haves:

• Excellent English Communication Skills: Proven ability to communicate effectively both verbally and in writing in English. This includes clearly articulating technical concepts, participating in meetings, and documenting work.
• Solid Foundation in Flutter/Dart: Demonstrated experience in developing and contributing to Flutter-based projects, showcasing the ability to deliver functional, performant, and high-quality code.
• UI/UX Sensitivity: A keen eye for detail when translating Figma designs into responsive, pixel-perfect Flutter widgets.

Ready to Level Up Your Career?

We'd love to hear from you! Please submit your resume and portfolio to apply.

Requirements:

• Experience with Transformer models: BERT, RoBERTa, GPT, T5, LLaMA, Mistral, Falcon, etc.
• Strong knowledge of Python; experience with PyTorch, TensorFlow, and Hugging Face Transformers.
• Understanding of modern LLM architectures and fine-tuning techniques: LoRA, PEFT, Instruction Tuning, RAG.
• Experience with NLP tasks: classification, text generation, machine translation, QA systems, etc.
• Familiarity with evaluation metrics: accuracy, F1, BLEU, perplexity, ROUGE, etc.
• Basic knowledge of statistics and classical machine learning.
• Experience with MLflow, DVC, or similar tools.
• Experience with model containerization (Docker).
• Understanding of CI/CD principles in ML projects.
• Skills in model deployment using FastAPI / Flask / TorchServe / Triton.
• Experience with cloud infrastructure (AWS, GCP, Azure, or local cloud providers).

• Bonus: experience with Kubernetes, Airflow, Kubeflow, Ray.

   

Responsibilities:

• Selecting and configuring modern Transformer/LLM models for company-specific tasks.

Fine-tuning, LoRA tuning, model distillation, and quantization.

• Preparing and processing datasets (including augmentation).
• Deploying models to production and automating pipelines (data → training → inference).
• Monitoring model performance in production, retraining, and optimization.
• Collaborating with Data Engineers and DevOps to build the MLOps infrastructure.

• Evaluating model performance using various metrics and analyzing results to identify areas for improvement and optimization.

   

We offer you:

• Having the capability to create something new and witness your own input.
• You can find confidence in the future here, but rest assured it won't be dull. 
• Join a dynamic and expanding community. Our company is experiencing growth and expanding into Europe. Currently, we have offices in Kyiv, and Warsaw and plan to open additional locations in other countries. 
• Full-time employment contract.
• Multisport (light). 
• Paid vacation, sick leave.

Interested in joining our team? We invite you to submit your CV.

<By submitting your CV to LLC “GigaCloud”, EDRPOU code [39792589] (hereinafter referred to as the “Company”), in response to our vacancy, you consent to the processing of your personal data contained in the CV by the Company in accordance with the Law of Ukraine “On Personal Data Protection”, ISO 27701 Information Privacy Management System, and the provisions of the GDPR>.

Job Description

- At least 10 + years of relevant commercial development experience

- Good strong exp working as Tech Lead and leading a team of 3-4 people. Need strong technical person for this role

- Strong client handling communication skills
- Advanced knowledge of Java. Would be great to have Java 11 exp
- Good knowledge in Spring framework (Spring Core, Spring MVC, Spring Boot, etc.), Kubernetes, Docker, Microservices, Gradle etc. 
- Experience with relational databases
- Experience with React 
- Experience with message brokers
- Experience building RESTful APIs
- Experience with Docker
- Experience implementing CI/CD
- Unit testing (JUnit, Mockito) and integration testing
- Algorithms and data structures

- Upper-intermediate level of English
- Good communication and interpersonal skills
- Strong analytical skills

Job Responsibilities

- Backend development (Java) 90% 

- Frontend development (React) 10%

- Design and implement new features
- Debug and resolve bugs and technical issues
- Write and review technical documentation
- Support good quality of a product
- Gather and analyze business requirements
- Participate in code reviews and share knowledge within the team
- Constant close collaboration with the team members
- Participate in technical discussion
- Participate in technical interviews

Department/Project Description

• Customer is a US medical Company that is dedicated to transforming patient’s lives at scale by being the driving force to decentralize the delivery of safe care into their homes or other preferred sites of care.
• Project provides health systems with all that is needed to safely care for patients, including the clinical protocols, reimbursement model, platform technology, and fulfillment of all the clinical services required in the home through partners. Clinicians and patients broadly prefer this model over traditional care; both clinical and financial outcomes are improved as compared to traditional care.

We're a web design and development agency looking for a confident cold caller to help us reach out to businesses whose websites need improvement.
 

What you'll do:
- Call US-based businesses from a pre-built list we provide (no prospecting needed)
- Identify website issues (outdated design, broken pages, slow load times) and present our services as a solution
- Follow a proven call script (training provided)
- Log call outcomes and follow up where needed
 

What we need:
- Clear, confident spoken English
- Comfortable making cold calls and handling objections
- Reliable internet and a good microphone/headset
- Available ~4-6 hours/day
 

Nice to have: experience selling web or digital services
 

This is a long-term role with room to grow. Apply with a short voice intro or past sales experience and your hourly rate.

Base + sales bonus.

We're a web design & development agency looking for a sharp SDR to help us grow across multiple platforms.
 

What you'll do:
- Bid on relevant jobs daily across Dribbble, Behance, and other freelance platforms
- Send outreach messages to potential clients via LinkedIn, email, and other channels
- Follow our proven templates and scripts (training provided)
- Report daily on bids sent, responses received, and pipeline status
 

What we need:
- Fluent written English
- Experience with freelance platform bidding
- Reliable internet, attention to detail, and consistency
- Available ~4-6 hours/day
 

Nice to have: familiarity with web design/development services

This is a long-term role with room to grow. Apply with a short intro, your rate and relevant experience.

Summary

Senior Backend Engineer, Node.js, Postgres. Remote role building core platform systems for an enterprise AI product. 5+ years experience required.

About the company

Our client builds an AI platform that enables enterprises to customize and deploy AI capabilities for their specific needs. The platform team is central to this work, responsible for infrastructure, shared components, and internal tooling that the rest of engineering depends on. The team works closely with product and applied AI engineers, with short feedback loops and genuine technical ownership.

The role

This is a backend-focused engineering position working on core platform systems. You'll design and build the foundational services that AI-native products run on — dealing with architecture decisions, performance problems, data modeling, and system reliability.

The work is technically demanding. When something difficult or critical needs to be solved properly, this role is expected to lead that effort.

What you'll work on

• Designing and implementing backend services and system components end-to-end
• Building infrastructure that supports fast iteration without sacrificing reliability
• Investigating and resolving complex issues across performance, data, and APIs
• Collaborating with platform, AI, and product teams to deliver systems that are observable and maintainable
• Improving developer experience through better tooling, clearer standards, and thoughtful architecture

What we're looking for

• 5+ years of software engineering experience with JavaScript tech stack, with clear ownership of complex backend systems
• Strong Node.js proficiency- clean, well-structured backend code matters here
• Solid understanding of relational databases (PostgreSQL) and data modeling
• Good debugging instincts and sound engineering judgement
• Ability to learn new domains quickly and work independently

Useful additions

• Experience with distributed systems, caching layers, message queues, or multi-tenant architectures
• Background in AI/LLM integration on the backend
• Familiarity with AI development platforms or coding assistants
• Previous work on enterprise platforms or AI infrastructure
• Platform/infrastructure experience: observability, CI/CD, API design

Core Responsibilities

 • Data Pipeline Management: Develop, optimize, and maintain scalable data pipelines to ensure high-quality data flow. 

• API Development: Build and maintain high-performance backend APIs using FastAPI. 

• System Reliability: Proactively identify bottlenecks and improve system stability within existing infrastructures.

 • Collaboration: Work closely with cross-functional teams to integrate AWS services and workflow orchestration tools into the production environment.

 

Required Qualifications 

• Experience: 3+ years of professional Python development experience. 

• Databases: Strong proficiency in both SQL and NoSQL database design and management. 

• DevOps Tools: Hands-on experience with Docker, CI/CD pipelines, and Git version control. 

• Frameworks: Proven experience building applications with FastAPI.

• Cloud & Orchestration: Practical experience with AWS services and familiarity with Airflow (or similar workflow orchestration tools). 

• Communication: Upper-Intermediate level of English (written and spoken) for effective team collaboration. 

 

 Preferred Skills (Nice to Have) 

• Experience within the Financial Domain. 

• Hands-on experience with Apache Spark and complex ETL pipelines.

• Knowledge of container orchestration using Kubernetes. 

• Exposure to or interest in Large Language Models (LLMs) and AI integration.

Core Responsibilities

• Design and implement batch and streaming data pipelines using Apache Spark.
• Build and evolve a scalable AWS-based data lake architecture.
• Develop and maintain real-time data processing systems (event-driven pipelines).
• Own performance tuning and cost optimization of Spark workloads.
• Define best practices for data modeling, partitioning, and schema evolution.
• Implement monitoring, observability, and data quality controls.
• Contribute to infrastructure automation and CI/CD for data workflows.
• Participate in architectural decisions and mentor other engineers.

Required Qualifications

Experience

• 3+ years of experience in Data Engineering.
• Strong hands-on experience with Apache Spark (including Structured Streaming).
• Experience building both batch and streaming pipelines in production environments.
• Proven experience designing AWS-based data lake architectures (S3, EMR, Glue, Athena).

Streaming & Event-Driven Systems

• Experience with event streaming platforms such as Apache Kafka or Amazon Kinesis.

Data Architecture & Modeling

• Experience implementing lakehouse formats such as Delta Lake.
• Strong understanding of partitioning strategies and schema evolution.

Performance & Reliability

• Experience using SparkUI and AWS CloudWatch for profiling and optimization.
• Strong understanding of Spark performance tuning (shuffle, skew, memory, partitioning).
• Proven track record of cost optimization in AWS environments.

DevOps & Platform Engineering

• Experience with Docker and CI/CD pipelines.
• Experience with Infrastructure as Code (Terraform, AWS CDK, or similar).
• Familiarity with monitoring and observability practices.

Nice to Have

• Experience in the Financial domain.
• Experience running Spark workloads on Kubernetes.
• Experience implementing data quality frameworks or metadata/lineage systems.

Requirements:

• 3+ years of experience managing Google Ads (PPC, UAC, YouTube), Apple Search Ads, focusing on fintech projects;
• Basic experience with Microsoft Ads (Bing) and DSP platforms;
• Proven track record of managing budgets exceeding $100,000 per month;
• Strong understanding of digital marketing metrics and analytics;
• Upper-intermediate English;
• Familiar with the US market;
• Excellent communication and collaboration skills to work effectively with cross-functional teams.

Responsibilities:

• Optimize and enhance advertising campaigns to identify opportunities for specific product types and audiences to increase conversion and ROI;
• Build out A/B tests and testing plans;
• Understand the marketing funnel and main metrics, optimize, analyze, and improve them;
• Collaborate closely with the Marketing Team, Developers, Designers, and Copywriters for ad creation; 
• Searching for new potential traffic sources and connecting additional advertising platforms;
• Quickly analyze and identify changes in key performance metrics, collaborating closely with the product team to determine underlying causes and drive data-informed decisions;
• Analyze the effectiveness of the campaign and use this data to inform future campaigns

Role Overview
 

We are looking for a decent Shopify Developer to join an existing eCommerce project and deliver measurable value quickly. The ideal candidate is hands‑on with Shopify (themes, apps, APIs), comfortable working in a fast‑paced product environment, and able to implement high‑quality features, fixes, and integrations with minimal ramp‑up.
 

Responsibilities:
 

• Implement and customize Shopify themes using Liquid, HTML, CSS, and JavaScript.
• Build and maintain Shopify apps and integrations (REST/GraphQL APIs, webhooks, third‑party services).
• Deliver production‑ready features quickly: estimate, implement, test, and deploy changes with minimal supervision.
• Optimize storefront performance and UX for conversion, accessibility, and mobile.
• Support data flows and integrations (inventory, ERP, payment gateways, analytics).
• Collaborate with product, design, QA, and client stakeholders on requirements and releases.
• Maintain code quality and CI/CD practices, write automated and manual tests, and monitor production issues.
   

Must Have:
 

• 3+ years of hands‑on Shopify development experience (themes, Liquid, apps).
• Strong skills in Liquid, JavaScript (ES6+), HTML5, CSS3 and responsive design.
• Experience with Shopify APIs (REST and/or GraphQL), webhooks, and app development.
• Solid knowledge of version control (Git) and deployment workflows.
• Practical eCommerce experience: checkout flows, product variants, collections, metafields.
• Ability to work independently and deliver high‑quality changes quickly.
   

Advantage

• Experience with Shopify Plus and enterprise features (multipass, scripts, wholesale).
• Familiarity with headless/decoupled architectures (Next.js, Hydrogen, storefront APIs).
• Experience integrating with ERP/NetSuite, payment providers, or PIM systems.
• Knowledge of analytics, A/B testing, and CRO best practices.
• Client‑facing experience and ability to translate business needs into technical solutions.
   

What success looks like

Deliver fast, reliable improvements to the storefront and integrations that increase conversion, reduce manual work, and enable the project to scale - measured by faster release cadence, fewer production incidents, and clear business impact (conversion, revenue, or operational efficiency).

The role

We're looking for a part-time strategy analyst to support live client engagements. You'll work with our technical team that builds an AI platform for strategic simulations and scenario modeling.
 

Right now the focus is on Ukrainian clients. That's your entry point. We work with companies in energy, oil and gas, commodities, chemicals, manufacturing and retail. Over time we'll connect you to global projects: corporate development, M&A, strategic planning for international clients.
 

Your job is to validate AI simulation outputs, build financial models, analyze what data is available on the client side and in the market, and turn raw platform results into materials that executives use to make decisions.
 

Part-time, 10-20 hours per week. Flexible schedule. Hours can scale up as we take on more clients.
 

What you'll do

1/ Validate AI simulation results against real market data and financials. You're the reality check between the AI and the client
2/ Build financial models that connect to the simulation platform. Scenario analysis, stress-testing, forecasting
3/ Audit available data on the client side. What exists, what's missing, what's reliable, what needs additional verification
4/ Market sizing, competitive analysis, industry benchmarking for active engagements
5/ Source and structure Ukrainian market data (harder to find than US/EU, which is exactly why we need you)
6/ QA models and deliverables for accuracy and industry relevance before they go to the client
7/ Prepare client-facing materials: presentations, analytical memos, executive summaries
 

Requirements

• Domain experience in energy, oil and gas, commodities, chemicals, manufacturing or retail. You've worked in one or more of these industries and understand their specifics, key metrics and how data is structured
• 2+ years at a Big Four firm (Deloitte, PwC, EY, KPMG) in consulting, audit or transaction advisory, a strategy consultancy or in an analytical/financial role at a corporation. Audit experience with Ukrainian corporates is a strong plus -- you already know what data actually exists and what doesn't.
• Financial modeling skills. You can build models from scratch in Excel/Google Sheets, not just fill in templates
• Experience structuring and presenting data for senior executives
• Comfortable working with large, unstructured datasets and extracting signal from noise
• Can work independently. We give you the project context and you run with it
• Ukrainian -- fluent
• English -- B2+. Team communication and internal deliverables are in English
   

Big plus

• Experience with M&A due diligence, transaction advisory or corporate development
• Market sizing, competitive benchmarking, industry landscape analysis
• Familiarity with AI tools (Claude, ChatGPT, Cursor or similar) for research and analysis acceleration
• Experience with scenario planning, simulations or wargaming
• Worked at a startup or fast-moving team where you covered multiple roles at once
• Accounting, audit or financial reporting background

Not for you if

• You need a detailed brief before you start working. We move fast and fill in gaps as we go
• You only know how to execute within pre-built frameworks. We need people who build the framework
• You've only done advisory and never built the models yourself
• You're looking for a strict 9-to-5
   

Compensation

• Hourly rate, discussed individually based on experience
• Part-time contract, 10-20 hours per week
• Potential to scale hours or convert to ongoing retainer as engagements grow
   

We review every application and reply only to candidates who are a strong fit. If you don't hear back within two weeks, the role wasn't the right match this time.
 

About Principle

Principle is an AI-powered strategic foresight platform built by OpenBabylon, a frontier AI research lab in San Francisco. Team of 3 PhDs, ex-Google, ex-CERN. $2M pre-seed from SMRK VC, SMOK VC, RideHome AI Fund (LPs include Marc Andreessen and Chris Dixon), a16z Scout Fund, Bain Capital Scout Fund, Unpopular Ventures and angels from Groq, DeepMind and Anthropic.
 

We build digital twins of companies, competitors, regulators and markets, then simulate branching futures so leadership teams can stress-test strategy before committing resources. What McKinsey does in 6 months for $1-2M, we deliver in weeks. Our clients are Fortune 500 companies and $100M+ tech firms.