Jobs at Djinni

10057
  • · 289 views · 24 applications · 15d

    Tech Lead (Rust / Web3)

    Full Remote · Countries of Europe or Ukraine · Product · 5 years of experience · English - B1
    About us We are building a high-load decentralized platform at the intersection of blockchain and fintech: on-chain data indexing, trading automation, and integrations with DeFi and Web3. Responsibilities Design and develop backend architecture: APIs,...

    About us
    We are building a high-load decentralized platform at the intersection of blockchain and fintech: on-chain data indexing, trading automation, and integrations with DeFi and Web3.

     

    Responsibilities

    • Design and develop backend architecture: APIs, queues, indexers, bots/workers for on-chain event processing.
    • Develop event-driven architecture with idempotency, exactly-once delivery (transactions + deduplication), outbox/inbox, retries, and DLQ.
    • Integrate with Web3/EVM/Solana: read and process events, interact with smart contracts, manage nonces, handle reorg/finality, and multi-chain transactions.
    • Work with Subgraph (The Graph): design schemas, implement TypeScript mappings, and optimize blockchain data indexing.
    • Develop DeFi integrations: Uniswap v2/v3, AMM pools, pricing, liquidity, routing, slippage/MEV resistance.
    • Optimize performance: profile hot paths, migrate critical components to Rust, ensure async/tokio efficiency, manage backpressure.
    • Ensure observability and reliability: metrics/traces/logs (Prometheus, Grafana, OpenTelemetry), SLO/SLI tracking, degradation and fallback mechanisms.
    • Provide leadership: define technical vision, mentor developers, conduct code reviews, prioritize backlog, and introduce best engineering practices.

       

    Requirements

    • 5+ years of commercial backend development experience.
    • 3+ years in blockchain/DeFi (EVM, Solana, on-chain data, smart contracts, integrations).
    • 2+ years in a Tech Lead or Team Lead role.
    • Strong Rust experience: async/tokio, network programming, performance profiling.
    • Proficiency with queues/events: RabbitMQ/AMQP, delivery guarantees, retries, DLQ, message contracts.
    • Experience with Blockchain/DeFi: ABI, events, integration with Solidity and Solana programs, multi-chain interactions.
    • Knowledge of Subgraph (The Graph): schema design, mappings, indexing optimization.

       

    Nice to have

    • Production experience with Rust (tokio, async, tracing), low-level performance profiling.
    • Knowledge of Go (CLI/tools), ETL pipelines for on-chain data, DWH (ClickHouse/BigQuery).
    • Experience with Layer 2 (Optimism, Arbitrum), cross-chain bridges/protocols.
    • Experience with MEV, mempool monitoring, gas optimization.
    • Familiarity with Web3 tools: Foundry, Hardhat, Ethers.js, web3.js, Anchor (Solana).
    More
  • · 37 views · 6 applications · 15d

    Deputy Head of Risk Department (Anti-Fraud Systems)

    Full Remote · Worldwide · Product · 2 years of experience · English - B2
    Requirements: Bachelor’s or Master’s degree (Mathematics, Statistics, IT, Analytics) 2–3 years of experience as a Risk/Fraud/Data Analyst in anti-fraud products for iGaming or E-commerce (such as Seon, LexisNexis, Covery, Kount, Riskified, Forter,...

     

    Requirements:

    • Bachelor’s or Master’s degree (Mathematics, Statistics, IT, Analytics)
    • 2–3 years of experience as a Risk/Fraud/Data Analyst in anti-fraud products for iGaming or E-commerce (such as Seon, LexisNexis, Covery, Kount, Riskified, Forter, Feedzai, etc.) or experience working with these systems*
    • Experience in rule engine configuration — creating, testing, and optimizing rules based on transactional and behavioral data
    • Understanding of scoring principles: knowledge of risk assessment models and fraud probability evaluation methods
    • Ability to work with large datasets and identify fraud patterns
    • Experience in building and visualizing reports
    • Strong analytical thinking and attention to detail
    • English level: Upper-Intermediate or higher

       

    Will be a plus:

    • Experience building an anti-fraud system from scratch or optimizing an existing one
    • Experience in the crypto sector
    • Knowledge of basic KYC principles
       

    Key Responsibilities:

    • Develop and maintain scoring models for customer/transaction risk assessment
    • Configure, test, and optimize risk rules
    • Monitor scoring accuracy and rule efficiency metrics
    • Create and maintain reporting dashboards and analytics
    • Analyze fraud incidents and develop fraud prevention strategies
    • Collaborate with cross-functional teams
    More
  • · 158 views · 31 applications · 15d

    QA Engineer

    Full Remote · EU · Product · 3 years of experience · English - B2
    We’re looking for a QA Engineer who will own product quality and ensure that Petcube devices work reliably in real-life conditions. This is a hands-on role with a strong focus on manual QA, product behavior, hardware interaction, and connectivity. At...

    We’re looking for a QA Engineer who will own product quality and ensure that Petcube devices work reliably in real-life conditions. This is a hands-on role with a strong focus on manual QA, product behavior, hardware interaction, and connectivity. 

    At Petcube, we build technology that helps people care for their pets, and our products live in real homes with real pets, making quality a shared responsibility.

    What you’ll do

    • Take ownership of product quality and actively drive improvements
    • Perform manual testing of hardware devices, their logic, related mobile and backend functionality
      Test real-life scenarios: device setup, connectivity, stability, edge cases
    • Validate product behavior across supported regions and networks
    • Collaborate closely with developers and product managers to clarify requirements and expected behavior
    • Document findings clearly and help the team understand quality risks and trade-offs
    • Plan and manage your own testing tasks independently

    What we’re looking for

    • 3+ years of experience as a QA Engineer (Mid+ level)
    • Strong manual QA background (this is a must)
    • Product mindset: you care about how things should work, not just test cases
    • Ability to work autonomously: plan your work, manage priorities, follow through
    • Experience testing complex systems (devices + backend +mobile is a big plus)
    • Clear communication and structured thinking

    Nice to have

    • Experience with hardware testing or IoT products
    • Previous experience in a product company
    • Understanding of connectivity-related issues (LTE, device pairing, unstable networks)
    • Experience with test automation (nice to have, not required)

     

    Location & connectivity

    Due to connectivity restrictions, we can consider candidates only from the EU (Poland, Romania, Czech Republic, Germany, Slovenia, Estonia, Latvia, Greece, Hungary), the US, or Canada.

    Why Join Us

    • Fast-growing, product-driven tech company
    • Global remote team with a strong performance culture
    • Make a real impact on pet parents and their companions

    Benefits

    • Great compensation package with company-wide benefits
    • Silicon Valley-rooted startup environment with a sharp focus on the US market
    • Rapid professional development in a healthy corporate culture
    • Remote work
    • Health benefits

    🐾 Let’s do this

    If you believe quality is about care, not just checklists — and you’d love to help people take better care of their pets through technology — we’d be happy to get to know you.

    More
  • · 23 views · 5 applications · 15d

    Marketing Coordinator

    Full Remote · Countries of Europe or Ukraine · 2 years of experience · English - B1
    Astecture Group brings together several tech companies — including Acropolium — united by a shared vision of innovation, operational excellence, and a partnership-first mindset. We’re looking for a Marketing Coordinator who will act as the communication...

    Astecture Group brings together several tech companies — including Acropolium — united by a shared vision of innovation, operational excellence, and a partnership-first mindset.

    We’re looking for a Marketing Coordinator who will act as the communication and process bridge between internal teams, external marketing contractors, and our marketing agency.

    This is a hands-on, coordination-focused role for someone who enjoys structuring complex setups, aligning multiple stakeholders, and improving marketing operations with modern tools — including AI.


     

    What You’ll Do

     Coordination Between Stakeholders (Group → Agency → Contractors)

    • Act as the primary Marketing Coordinator across Astecture Group
    • Ensure clear and consistent communication between internal teams, the marketing agency, and freelancers
    • Monitor task execution in line with agreements, priorities, and deadlines
    • Provide contractors and agency partners with timely input, context, and clear requirements
    • Proactively identify risks, delays, or issues and escalate them to leadership when needed

    Marketing Operations & Process Building

    • Set up and maintain effective communication and reporting flows between stakeholders
    • Support the implementation of new marketing tools, including AI-powered solutions
    • Build and maintain documentation, guidelines, and internal marketing workflows
    • Help bring structure and transparency to ongoing marketing activities across the Group

       

    Market Research & Trend Monitoring

    • Track new marketing tools, SMM formats, and AI-driven solutions
    • Monitor competitors and relevant industry trends
    • Proactively suggest improvements and innovative approaches for Group brands

       

    Ideal Candidate Profile

    • 2+ years of experience in marketing coordination, digital project management, or related roles
    • Strong communication and organizational skills; comfortable working in structured, coordination-heavy environments
    • Solid understanding of digital marketing fundamentals and modern marketing workflows
    • Curiosity and openness to new technologies and AI tools
    • Ability to mediate between multiple stakeholders with clarity, ownership, and diplomacy

       

    Nice to Have

    • Experience collaborating with marketing agencies or freelancers
    • SMM knowledge (LinkedIn / Facebook content processes & best practices)
    • Interest in employer branding or talent marketing
    • Hands-on familiarity with AI tools
    • Experience in B2B, tech, or SaaS environments

       

    Hiring Process

    1️⃣ Meeting with HRD & Recruiter — role overview, experience, expectations, cooperation format
    2️⃣ Meeting with the Founder — alignment on vision, priorities, and work style
    3️⃣ Offer — welcome to the team 


     

    💬 Sound like your kind of challenge?
     If you’re excited about coordinating marketing across a dynamic group of tech companies — where process meets creativity — we’d love to talk.

    DARE TO CONNECT with us.




     

     

    More
  • · 106 views · 20 applications · 15d

    Senior .NET Engineer

    Full Remote · EU · 4 years of experience · English - B2
    We’re partnering with a US-based client, a market leader in eSignature and digital agreement solutions used by millions worldwide. Our Client is looking for a self-motivated software engineer to join us developing storage infrastructure to organize and...

    We’re partnering with a US-based client, a market leader in eSignature and digital agreement solutions used by millions worldwide.

     

    Our Client is looking for a self-motivated software engineer to join us developing storage infrastructure to organize and facilitate our business growth. Our team is the center of how customers and services store their critical data and trust its security, performance, availability, compliance and durability, which enables customer derive intelligence and analytics through AI & BI.

    Responsibility:


    ● Design, develop, and maintain high-performance backend systems and APIs using C# and .NET technologies, hosted in azure and various compliance level data-centers
    ● Leverage Azure services like Azure App Services, Azure Kubernetes Service (AKS), Azure Blob Storage, and SQL/No-SQL Databases to build scalable, secure, and reliable cloud-native solutions
    ● Build and maintain microservices-based architectures using C#, ASP.NET, and others
    ● Design and implement RESTful or gRPC APIs, ensure seamless integration with other systems and products
    ● Optimize architecture and solution for scalability and availability with cost and maintenance in mind
    ● Identify and address performance bottlenecks and scalability challenges proactively
    ● Align across teams for designs, communicate and resolve roadblocks
    ● Guide and mentor other engineers through design and code reviews


    Requirements: 
    ● 4+ years of software engineering experience in high scale distributed systems
    ● 4+ years of experience building resilient and highly available web services
    ● Experience understanding architectural standards and decisions
    ● Experience in full stack development

    Shifted working hours with at least 4 hours of daily overlap with the PST time zone (Pacific Standard Time).
    ● B.S., M.S., or PhD in Computer Science or equivalent experience

    More
  • · 78 views · 6 applications · 15d

    Senior HTML/Markup developer (relocation to Spain, Valencia)

    Office Work · Spain · Product · 5 years of experience · English - B2
    BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of...

    BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

    We're looking for an experienced Senior HTML/Markup Developer to join our development team in Valencia, Spain!

    ✅ Responsibilities:
    ✔️ Develop efficient, fast, and adaptive layouts of interfaces;
    ✔️ Collaborate with developers and web designers to improve the product;
    ✔️ Introduce ideas, solutions, and optimize existing applications.

    Requirements:
    ✔️ 5+ years of professional experience as an HTML coder;
    ✔️ Excellent knowledge of HTML and CSS;
    ✔️ Good understanding of UI/UX design and cross-browser layout;
    ✔️ Strong knowledge of CSS/JS animation;
    ✔️ Experience working with CSS Pre-Processors: Sass/Less;
    ✔️ Understanding of web application performance optimization;
    ✔️ Experience with Figma / Sketch / Photoshop;
    ✔️ Advanced level of English.

    Nice to Have:
    ✔️ Understanding of front-end build tools (Gulp, Webpack, etc.);
    ✔️ Knowledge of HTML email templates;
    ✔️ Experience working with CSS frameworks;
    ✔️ Experience working with template engines (Pug, Handlebars, etc.);
    ✔️ Experience with Canvas API / WebGL / ThreeJS / GSAP.

    We offer excellent benefits, including but not limited to:
    🧑🏻‍💻 Learning and development opportunities and interesting, challenging tasks;
    📝 Official employment following Spain/EU laws, including registration of family members;
    ✈️ Relocation package (flight tickets + 2-week hotel stay);
    📚 Language development support and partial compensation for classes;
    🎁 Birthday celebration gift;
    🏝 23 working days of Annual Vacation for proper rest.

    Join BrainRocket and rock with us! 🚀

    More
  • · 143 views · 21 applications · 15d

    Customer Support Specialist (Online) to $800

    Full Remote · Countries of Europe or Ukraine · Product · 2 years of experience · English - C1
    About us: PRNEWS.IO is a global content marketing platform that connects brands with media outlets around the world. Headquartered in Northern Europe, we empower international brands to gain media exposure while helping news publishers monetize their...

    About us:

    PRNEWS.IO is a global content marketing platform that connects brands with media outlets around the world. Headquartered in Northern Europe, we empower international brands to gain media exposure while helping news publishers monetize their content. Our clients are located all over the world, including Europe, the US, and Asia, with a growing strategic focus on expanding our presence and market share in the United States.

     

    At PRNEWS.IO, you'll join a dynamic, international team that thrives in a fast-paced environment and shares a passion for global communication. We operate based on four core values:  ambition, innovation, credibility, and cooperation. And we believe in aligning our work with purpose. These values define who we are and who we strive to become.
     

    About the role:

    The Customer Support Specialist plays a central role in ensuring operational excellence in Sales, and delivering a high-quality client experience. Acting as a bridge between Customer Success, SDRs, Sales Executives, and other cross-functional teams, you will be responsible for resolving client inquiries, supporting seamless campaign execution, and maintaining the highest standards of service across all touchpoints.

     

    In this role, you will work closely with Sales and Customer Success to ensure that every client receives timely, accurate, and proactive support. You will help clients navigate the platform, troubleshoot issues, optimize processes, and contribute to stronger retention and revenue outcomes.

     

    This position offers full remote flexibility and the opportunity to grow within a fast-scaling, forward-thinking global organization.

     

    Key requirements:

    • 1-2 years of Customer Support experience (in online advertising or digital services)
    • Experience in international Sales is a plus!
    • Strong communication skills to work comfortably with chats, calls and personalized email correspondence
    • Proficiency in business English at a high level, both spoken and written - and knowledge of other languages is welcomed
    • Positive attitude and flexibility to change (driven by our growth in different geographic markets)
    • Sincere curiosity to learn new trends

       

    Main responsibilities:

    • Support clients in achieving the best possible results using the platform.
    • Advise clients on new products, services, promotions, and special offers to maximize their success.
    • Build and nurture long-term, mutually beneficial relationships with clients.
    • Alongside Sales Retention Team, conduct regular health checks on your client portfolio, identifying potential challenges and proactively addressing any issues.
    • Meet or exceed sales targets and key performance indicators (KPIs).
    • Maintain accurate and up-to-date client records in the CRM, ensuring all communications are properly logged.
    • Collaborate closely with Sales and Marketing team members to enhance results and share best practices.
    • Proven sales expertise and a strong understanding of customer needs; proactive mindset with a willingness to contribute ideas, improve processes, and drive innovation.
       

    We offer:

    • Competitive compensation package with performance-based bonuses
    • A vibrant team of professionals with diverse expertise and backgrounds
    • Unique career development opportunities and room for professional growth
    • Paid annual leave and a supportive work environment
    More
  • · 74 views · 7 applications · 15d

    Media Relations and Partnerships Specialist

    Full Remote · EU · Product · 2 years of experience · English - B2
    About us: PRNEWS.IO is a global content marketing platform that connects brands with media outlets around the world. Headquartered in Northern Europe, we empower international brands to gain media exposure while helping news publishers monetize their...

    About us:

    PRNEWS.IO is a global content marketing platform that connects brands with media outlets around the world. Headquartered in Northern Europe, we empower international brands to gain media exposure while helping news publishers monetize their content. Our clients are located all over the world, including Europe, the US, and Asia, with a growing strategic focus on expanding our presence and market share in the United States.

     

    At PRNEWS.IO, you'll join a dynamic, international team that thrives in a fast-paced environment and shares a passion for global communication. We operate based on four core values:  ambition, innovation, credibility, and cooperation. And we believe in aligning our work with purpose. These values define who we are and who we strive to become.

     

    About the Role:

    We’re looking for a proactive and detail-oriented Media Outreach & Partnerships Specialist to join our team. In this role, you’ll work at the intersection of media, SEO, and digital communications while optimizing our outreach workflows, scaling distribution processes, and expanding our media partnerships globally.

     

    This is a great opportunity for someone who understands the media landscape, has hands-on SEO experience, and enjoys working with data, tools, and automation to drive measurable impact.
     

    Key Responsibilities:

    • Streamlining and automating the process of collecting and managing media databases
    • Identifying relevant web resources and researching them using key SEO metrics (DR, traffic, topical relevance)
    • Building targeted contact lists and launching efficient outreach campaigns
    • Optimizing communication workflows with publishers and media partners
    • Scaling outreach efforts using automation tools
    • Monitoring campaign effectiveness and continuously improving performance

       

    Requirements:

    • Experience with Ahrefs or Serpstat;
    • Familiarity with Screaming Frog or Netpeak Spider/Checker
    • Understanding of technical and content audits (a plus)
    • Experience with CMS platforms and AI tools
    • Ability to analyze backlink profiles and competitor link strategies
    • Proficiency in building contact databases and executing email campaigns
    • English at B1+ level and strong writing skills
    • Hands-on experience with Gmass, Snov, or similar email tools (a plus)
    • Confident use of Google Sheets, including formulas and text functions

       

    We offer:

    • Remote work possibilities
    • Competitive compensation
    • A collaborative international team with diverse backgrounds
    • Clear growth paths and unique career opportunities 
    • Paid vacations

     

    More
  • · 63 views · 5 applications · 15d

    Middle C++ Developer

    Full Remote · Worldwide · Product · 3 years of experience · English - A2
    Boosteroid is one of the world’s Top-3 cloud gaming services, alongside Microsoft and NVIDIA. Our platform allows users to play top-tier PC games on any device: laptops, smartphones, tablets, or Smart TVs. Boosteroid operates its own GPU infrastructure...

    Boosteroid is one of the world’s Top-3 cloud gaming services, alongside Microsoft and NVIDIA.
    Our platform allows users to play top-tier PC games on any device: laptops, smartphones, tablets, or Smart TVs.
    Boosteroid operates its own GPU infrastructure across 27 data centres on three continents.

    We are currently looking for Middle C++ Developer.

    Responsibilities:

    • Design and implementation of network-oriented cross-platform Qt/QML native applications (Linux/MacOS/Windows, userspace)
    • Emphasis on generic design with careful memory and processing considerations.
    • Design and implement new modules and features, as well as evolve existing ones.
    • Regular communication with the remote team.

     

    Requirements:

    • 3+ years of professional C++/Qt/QML experience, with at least one shipped cross-platform desktop product.
    • Strong knowledge and experience in C++ development, confidently use C++17 as a baseline, and be comfortable reading and borrowing C++20 features.
    •  Solid Qt/QML/QtQuick (UI, resources/qrc, translations, platform conditionals, QSettings, QApplication lifecycle).
    •  Graphics/media basics: OpenGL probing, ffmpeg/H.26x decoder usage, platform-specific GPU paths (DX9/11, VAAPI/VDPAU, ANGLE).
    •  Solid understanding and experience with multithreading.
    •  Networking familiarity (WebSockets/HTTP).
    •  Knowledge of shell scripting and Python

     

     Will be a plus:
    Experience with Android OS and Android TV.

     


    We offer:
    • Fast career growth in an international tech company;
    • Competitive compensation package;
    • Performance-based bonuses;
    • Flexible and comfortable working environment;
    • Paid vacation and sick leave.
     

     

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  • · 72 views · 1 application · 15d

    C# + Unity Developer (4months project)

    Office Work · Ukraine (Kyiv) · 4 years of experience · English - B2
    Our VR solution is an advanced visualization environment designed to improve collaboration and decision making of multi-disciplinary teams looking at complex 3d data. It provides a virtual reality environment in which users can display work from the...

    Our VR solution is an advanced visualization environment designed to improve collaboration and decision making of multi-disciplinary teams looking at complex 3d data. It provides a virtual reality environment in which users can display work from the application and collaborate in real-time with other users through a variety of interactive tools: including voice chat, avatars, teleport, laser pointers, and more.

    • Responsibilities:

      Participate in development activities for VR project implementation: 3D graphics, analyzing technical approaches, finding optimal solutions from the performance perspective.

    • Mandatory Skills Description:

      • 4+ years in Graphics development
      • Knowledge and experience of Unity 3D, Unity Networking / Multiplayer
      • VR/AR Experience, Optimization
      • Strong proficiency in C#
      • In-depth knowledge of the graphics rendering pipeline.
      • Proficiency in cloud platforms such as AWS and Azure.
      • Excellent problem-solving skills and attention to detail.
      • Strong communication and collaboration skills.
      • Ability to work independently and as part of a team.

    • Nice-to-Have Skills Description:

      • Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
      • Familiarity with Android
      • Familiarity with Realtime Model Loading,
      • Experience with OpenXR and SteamVR.
      • Experience with developing standalone apps for Meta Quest 3

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  • · 27 views · 2 applications · 15d

    Senior Data Engineer

    Full Remote · Ukraine · 4 years of experience · English - B2
    Project Description New long-term project for an Energy client, where we will create an application with AI integrated for the comprehensive data analysis. You will be working closely with the customer stakeholders as part of the Scrum team. ...

    Project Description

    New long-term project for an Energy client, where we will create an application with AI integrated for the comprehensive data analysis. You will be working closely with the customer stakeholders as part of the Scrum team. 

     

     

    Technical Requirements (Must Have):
    Python — 5+ years, production code (not just notebooks)
    SQL / PostgreSQL — 5+ years, complex queries, optimization
    Apache Kafka — event streaming, consumers, producers
    pandas / numpy — expert level, large datasets (1M+ rows)
    scikit-learn — clustering algorithms, metrics, hyperparameter tuning
    ETL Pipelines — 4+ years building production data pipelines
    Text Processing — tokenization, cleaning, encoding handling
    Git — branching, PRs, code reviews
    English — B2+ written and verbal

     

    Would Be a Plus
    Sentence-BERT / Transformers (HuggingFace ecosystem)
    MLflow or similar ML experiment tracking
    Topic Modeling (LDA, NMF)
    DBSCAN / Hierarchical Clustering
    FastAPI / Flask
    Azure DevOps
    Kafka Streams / ksqlDB
    BI & Visualization tools (Power BI, Tableau, Grafana, Apache Superset, Plotly/Dash, or similar)

    Nice to Have
    Energy / Utility / SCADA domain experience
    Time-series analysis
    Prometheus / Grafana monitoring
    On-premise ML infrastructure (no cloud APIs)
    Data modeling / dimensional modeling
    dbt (data build tool)

     

     

    Job Responsibilities

    Strong problem-solving and follow-up skills; must be proactive and take initiative
    Professionalism and ability to maintain the highest level of confidentiality
    Create robust code and translate business logic into project requirements
    Develop code using development best practices, and an emphasis on security best practices
    Leverage technologies to support business needs to attain high reusability and maintainability of current and newly developed systems
    Provide system design recommendations based on technical requirements
    Work independently on development tasks with a minimal amount of supervision

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  • · 49 views · 4 applications · 15d

    Senior Data Scientist to $8000

    Full Remote · Worldwide · 6 years of experience · English - B2
    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...

    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.

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  • · 72 views · 2 applications · 15d

    Team Lead (Flutter)

    Full Remote · EU · Product · 5 years of experience · English - B1
    We are looking for a Team Lead [Flutter] to join our team! Requirements: - Extensive experience with Flutter framework and proven ability to deliver complex, scalable, production-grade mobile applications. - Expert-level knowledge of Dart, state...

    We are looking for a Team Lead [Flutter] to join our team!  

    Requirements: 
    - Extensive experience with Flutter framework and proven ability to deliver complex, scalable, production-grade mobile applications.
    - Expert-level knowledge of Dart, state management approaches (Bloc, Provider, Riverpod, or similar), and mobile architectural patterns.
    - Experience leading development in monorepo environments, including managing module interdependencies and coordinating cross-team contributions.
    - Strong expertise in implementing and optimizing advanced Flutter animations, transitions, and custom motion design.
    - Proven experience with performance optimization: rendering performance, memory efficiency, build size improvements, and network interaction optimization.
    - Deep understanding and practical application of modular architecture or clean architecture principles in large-scale commercial projects.
    - Experience with analytics tools, push notifications, and in-app purchase integrations.
    - Advanced knowledge and hands-on application of SOLID principles and GRASP patterns in system design and codebase structuring.
    - Understanding of application lifecycle, networking, CI/CD processes, version control best practices, environment configuration, and mobile debugging tools.
    - 5+ years of relevant experience in mobile development, including prior experience in a senior or lead role. 

    Responsibilities: 
    - Lead mobile application development by defining technical direction, ensuring architectural consistency, and guiding the implementation of high-quality Flutter solutions.
    - Develop and maintain complex features by applying advanced architectural principles, reusable component design, and performance-focused engineering practices.
    - Oversee the monorepository structure by defining module boundaries, managing shared libraries, and ensuring transparent development workflows across the team.
    - Optimize application performance by conducting in-depth profiling, identifying rendering bottlenecks, improving memory usage, and ensuring a smooth user experience across devices.
    - Drive the creation and refinement of complex animations by evaluating motion design requirements, supervising implementation quality, and ensuring high rendering performance.
    - Collaborate with Product, QA, Backend, and Design teams by participating in planning activities, clarifying requirements, and ensuring effective integration of technical solutions.
    - Conduct code reviews by setting quality standards, ensuring adherence to architectural guidelines, and supporting continuous improvement in development practices.
    - Mentor and support developers by providing technical guidance, enabling professional growth, and improving the overall performance of the mobile engineering team.
    - Report directly to the Team Lead / Engineering Manager and contribute to strategic planning in the mobile development domain. 

    Our benefits to you:
    ☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance and more

    🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed

    🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided

    🏖Paid vacations, sick leave, personal events days, days off

    💵Referral program — enjoy cooperation with your colleagues and get the bonus

    📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences

    🎯Rewards program for mentoring and coaching colleagues

    🗣Free internal English courses

    ✈️In-house Travel Service

    🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more

    🎳Other benefits could be added based on your location 


     

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  • · 36 views · 0 applications · 15d

    Embedded Rust Engineer

    Full Remote · EU · 4 years of experience · English - B2
    YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term...

    YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
    We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
    Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

    Our client is an innovative product company developing a smart monitoring device that combines computer vision, machine learning, and advanced camera technologies. The product analyzes sleep patterns and provides data-driven insights, helping families improve daily routines. The company is a fast-growing VC-backed startup with a strong engineering culture and real-world products used globally.

    Key Requirements:
    🔹 4+ years of experience in C/C++ for embedded systems;
    🔹 Strong experience with Embedded Linux on ARM (Cortex-A);
    🔹 (Yocto is a big plus);
    🔹 Experience with Video4Linux, PulseAudio, systemd;
    🔹 Ability to develop drivers and work with interfaces:;
    🔹 I2C, SPI, UART, I2S;
    🔹 Experience with Device Tree / OpenFirmware, IIO — advantage;
    🔹 Strong debugging, cross-compilation, and toolchain knowledge;
    🔹 Ability to read and work with existing codebases;
    🔹 Experience with testing (unit, integration, E2E);
    🔹 Strong Git skills and GitHub workflow experience;
    🔹 Rust knowledge — advantage;
    🔹 English – Upper-Intermediate or higher.

    Will be plus:
    🔹 Networking: TCP/IP, application protocols, encryption;
    🔹 BLE (GATT, Advertising, Bonding);
    🔹 Wi-Fi protocols and security;
    🔹 Video & audio streaming and transcoding;
    🔹 (H264/H265, AAC, OPUS, WebRTC, FFmpeg/GStreamer);
    🔹 Microcontrollers experience;
    🔹 ESP32, FreeRTOS, lwIP, NimBLE — strong plus;

    What you will do:
    🔹 Develop firmware components in C and Rust: drivers, BSP, networking and multimedia applications;
    🔹 Analyze requirements and provide time/effort estimations;
    🔹 Design features end-to-end (from idea to production);
    🔹 Collaborate with Product, Mobile, and Backend teams;
    🔹 Participate in technical discussions and propose solutions;
    🔹 Produce technical documentation and architecture diagrams;
    🔹 Plan and own development tasks;
    🔹 Lead cross-functional initiatives that impact Firmware, Mobile, and Backend;

    Interview stages:
    🔹 Initial HR interview;
    🔹 Technical interview;
    🔹 Assignment & coding session;
    🔹 Final interview with VP of Engineering;
    🔹 Reference Check;
    🔹 Offer;

    Why Join Us?

    At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
    From day one, you’ll get:
    🔹 Direct access to clients and meaningful products;
    🔹 Flexibility to work remotely or from our offices;
    🔹 A-team colleagues and a zero-bureaucracy culture;
    🔹 Opportunities to grow, lead, and make your mark.

    After you apply

    We’ll keep it respectful, clear, and personal from start to offer.
    You’ll always know what project you’re joining – and how you can grow with us.

    Everyone’s welcome

    Diversity makes us better. We create a space where you can thrive as you are.

    Ready to build something meaningful?

    Let’s talk. Your next big adventure might just start here.

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  • · 245 views · 74 applications · 15d

    Junior Full-Stack Developer (ReactJS + NodeJS)

    Full Remote · Countries of Europe or Ukraine · 1 year of experience · English - B2
    Our company is actively seeking a highly skilled and motivated Full-Stack Developer who is passionate about coding and eager to grow, to join our team. Your skill set: Strong knowledge of TypeScript Experience with React + Redux Backend expertise...

    Our company is actively seeking a highly skilled and motivated Full-Stack Developer who is passionate about coding and eager to grow, to join our team.

     

         Your skill set:
     

    • Strong knowledge of TypeScript
    • Experience with React + Redux
    • Backend expertise in Node.js + NestJS
    • Working knowledge of PostgreSQL
    • Understanding of RESTful APIs and using Postman
    • Familiarity with Docker and AWS
    • Experience with React Native, Firebase, Expo will be a plus
    • Understanding of MonoRepo structure and workflows
    • Comfortable with written and spoken English (Upper-Intermediate+)

       

      Responsibilities:
       

    • Build and improve new features and modules
    • Maintain and refactor existing codebase
    • Integrate with third-party tools and services
    • Work closely with PMs, QAs, architects & fellow devs
    • Support deployments and participate in releases

      Benefits are discussed individually 
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