Mid-Level Big Data Engineer

Join Ajax Systems, a leading international technology company and the largest manufacturer of security systems in Europe. Our products are trusted by over 4.5 million end-users and 330,000 PRO-users across more than 180 countries. Ajax offers comprehensive solutions for the protection of residential and commercial properties of all sizes, with a portfolio featuring 280 devices for intrusion prevention, video surveillance, fire safety, and automation. Each year, we experience exponential growth in our team and our global user base.At Ajax Systems, we operate a full-cycle production process: from idea generation and prototyping to mass production and global sales. Each department addresses specific operational needs of the business. Our specialists are involved at every stage, from our production line in Ukraine to our logistics center in Poland, from where products are dispatched to distributors worldwide.As a Middle Data Engineer, you will be responsible for the development, maintenance, and optimization of data processing streams and solutions under the guidance of a Senior Data Engineer (Lead). Your primary goal will be to ensure reliable, high-quality, and scalable data for analytics, machine learning, and business applications.

Ajax Systems is a leading international technology firm and the largest manufacturer of security systems in Europe. With over 4.5 million end-users and 330,000 professional users across more than 180 countries, our Ajax products provide comprehensive solutions for safeguarding residential and commercial properties of all sizes.Our portfolio includes 280 devices designed for intrusion protection, video surveillance, fire safety, and automation solutions. Each year, we showcase significant growth in both our team size and user base worldwide.Ajax Systems operates a complete production cycle, from ideation and prototyping to mass manufacturing and global sales. Each department plays a critical role in meeting the operational needs of our business. Our professionals are engaged at every stage, from the production line in Ukraine to the logistics center in Poland, from where our products are shipped to distributors around the globe.As the Senior Data Engineer Team Lead, you will be responsible for the strategic design, development, and management of complex data processing solutions within an enterprise environment. Your primary goal will be to ensure reliable, secure, and scalable data for analytics, machine learning, and business applications.

SKELAR is a Ukrainian venture builder dedicated to creating international tech businesses. Together with our co-founders, we assemble strong teams aimed at succeeding in global markets.Currently, SKELAR manages a variety of businesses across different niches, from EdTech to marketplaces. Our companies frequently appear in the rankings of the top startups and product companies in Ukraine, achieving the highest positions in the App Store and developing platforms used by millions of people. Our ventures have also been featured in global media outlets like TechCrunch and Wired.We take pride in our robust team of over 1,000 professionals who possess exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses alongside the best talents in the market.We are currently seeking a Middle/Senior Lawyer who is ready to immerse themselves in business processes, work with contracts, and develop the legal function alongside our team.Key Responsibilities:Providing legal support for the operational activities of companies (Ukrainian jurisdiction).Preparing, analyzing, and negotiating contracts (primarily in foreign jurisdictions).Conducting KYC of counterparties.Participating in the enhancement/optimization of related processes in the area of contracts and KYC.Collaborating with internal teams to support business processes and ensure legal compliance (including conducting training).Providing legal support to the charity fund.Consulting on legal risks, regulatory changes, and current issues.Participating in the development of internal procedures for contract management and document flow.

Role Overview Miratech is looking for a Senior Data Engineer in Kyiv. This role focuses on designing, building, and maintaining scalable data architectures that support business growth. The position involves working closely with teams across the company to deliver reliable data solutions. What You Will Do Design and develop data architectures that can scale with business needs Build and maintain data processing pipelines Work with cross-functional teams to deliver data solutions that support business insights Optimize data workflows for performance and reliability Ensure data integrity throughout all processes

Location: Ukraine, Kyiv, hybrid/remoteType of work: Full-timeSmarter is a dynamic management company dedicated to strategizing investment activities and optimizing management and development strategies across various business units. Our key focus areas include the international fintech community SFORS (sfors.com), the brokerage firm Statok (statok.global), and the product company Pine Software (pinesoftware.com.cy).We are seeking a proactive and knowledgeable Middle Business Central Administrator to join our team. The ideal candidate will provide user support and enhance their expertise in Microsoft Dynamics 365 Business Central. This position is perfect for individuals eager to learn, tackle new challenges, and advance their skills in ERP administration.ResponsibilitiesProvide Business Central user support, including incident analysis, root cause identification, addressing non-standard requests, and training users on key system functionalities.Manage accounts and access by creating and optimizing permission sets, security groups, and configuring access policies based on business requirements.Administer environments (sandbox, test, production) by ensuring access compliance, coordinating environment updates, and creating new environments as needed for testing and demonstrations.Configure the system by maintaining and optimizing settings and parameters to align with business processes.

Join our dynamic team as we build one of the most innovative live-streaming platforms, connecting over 400,000 monthly active users through engaging live events, interactive video chats, and real-time community experiences. Our mission is clear: to spread joy, combat loneliness, and provide safe, ad-free entertainment that keeps users returning.In this fast-paced and complex industry, we thrive on challenges! As part of our passionate and skilled team, you will be involved in everything from scaling AI-powered recommendations to launching impactful, data-driven features that enhance monetization and user engagement. Every idea counts, and every release has the potential to reach a vast global audience.We're excited to announce our expansion into Arab countries and Europe, focusing on enhancing content quality and rolling out new features designed to keep our users engaged. Proudly ranking among the Top 5 streaming products in the United States and within the Top 10 globally, we are on a mission to break into the global Top 5. Are you ready to be part of this journey?About Your Role: As a Middle Partner Success Manager (Spanish), you’ll collaborate directly with international partners and creators to support their growth, success, and ability to unlock new opportunities on our platform. Your insights will be invaluable as you work alongside a committed team to address complex challenges, from enhancing creator ecosystems to utilizing data and AI-driven insights, all while playing a pivotal role in shaping the future of a platform used by millions around the world.

Kiss My Apps is a leading platform company uniting 7 product verticals and over 30 AI-first products, boasting more than 100 million users and a proprietary ecosystem of analytical, payment, and marketing solutions.Our products like AI Remodel, Printer, Botan, and Calorie Counter are global frontrunners in utilities, lifestyle, and health & fitness, consistently ranking at the top of the App Store and addressing the needs of a community of hundreds of millions.Our pace is our competitive advantage. Kiss My Apps grows a minimum of 3 times year on year, and we are on the lookout for a Middle Reporting Accountant (International/Estonia) who will ensure the quality and timeliness of financial reporting for our Estonian entities.In this role, you will facilitate an efficient monthly close process, oversee intercompany operations, and provide professional support during local audits as needed.Role Overview:We seek a specialist who will help maintain a high standard of financial reporting for international companies.You will work with financial data of Estonian legal entities, ensuring accuracy, consistency, and transparency of financial processes while also participating in their optimization and automation.Key Responsibilities:• Preparing a complete package of local financial reports (BS, P&L, CF, disclosures) for Estonian companies• Managing the full cycle of monthly closing• Ensuring the completeness and accuracy of data in the ERP system• Preparing and conducting monthly reconciliations of BS and P&L items• Performing intercompany reconciliations and preparing invoices• Ensuring compliance of reporting with local legislative requirements• Participating in local audits (if necessary)• Driving automation and optimization of financial processesWhat We Expect From You:• Experience in international company accounting according to IFRS or local GAAP• Full cycle reporting and monthly closing experience• Understanding of intercompany operations and reconciliations• Proficiency in Excel and experience working with large data sets• English proficiency at B1+

Ajax Systems is a leading international technology company and the largest manufacturer of security systems in Europe. With over 4.5 million end users and 330,000 PRO users across more than 180 countries, Ajax products are trusted for their comprehensive solutions designed to protect residential and commercial properties of all sizes. Our product portfolio includes 280 devices focused on intrusion detection, video surveillance, fire safety, comfort, and automation. We showcase remarkable growth each year, both in our team size and our global user base.At Ajax Systems, we operate a full-cycle manufacturing process: from idea generation and prototype development to mass production and worldwide sales. Each department fulfills specific operational needs of the business seamlessly. Our professionals are involved at all stages: from the production line in Ukraine to the logistics center in Poland, from where our products are dispatched to distributors worldwide.We are looking for a skilled Data Analyst (Middle) to join our marketing team, who will assist in working with data, uncovering insights, and supporting business decision-making processes.

Join Ajax Systems, a leading international technology company and Europe’s largest manufacturer of security systems. With over 4.5 million end-users and 330,000 PRO-users across more than 180 countries, our Ajax products are trusted worldwide. We provide comprehensive solutions for the protection of residential and commercial properties of all sizes. Our portfolio currently includes 280 devices for intrusion detection, video surveillance, fire safety, comfort, and automation. Each year, we demonstrate exponential growth in both our team size and user base globally.Ajax Systems operates a full-cycle production process: from idea generation and prototype development to mass production and global sales. Every department caters to specific operational business needs comprehensively. Our specialists are engaged at all stages, from the production line in Ukraine to our logistics center in Poland, from where our products are dispatched to distributors worldwide.

Join Sigma Software Group as a Data Engineer specializing in the interior design sector. In this role, you will leverage your expertise in data management and engineering to develop solutions that enhance data utilization within the design industry. Collaborate with a dynamic team to deliver innovative data-driven insights that will shape our projects and drive business decisions.

TENTENS Tech is a dynamic IT partner of SKELAR, a Ukrainian venture builder dedicated to creating international tech businesses.We specialize in developing social discovery platforms for over 20 million users globally. Our momentum and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Currently, our team at TENTENS Tech consists of more than 250 talented individuals, each operating as a CEO in their role and contributing to the collective success. We embrace a 10/10ths work style: focusing on our goals, asking the right questions along the way, and never settling for 'good'—always striving for excellence and beyond. If this resonates with you and you're ready to accelerate with us, let's connect!We are seeking a Senior/Lead Data Engineer to spearhead the development of a high-load Data Platform that processes over 2500 data streams and up to 9 PB of data monthly.In this role, you will be the technical driving force of the direction and will build a platform that provides teams with scalable, reliable, and user-friendly access to data.

Join our dynamic team as a Senior Data Engineer in the AdTech unit, where you will drive innovation and enhance data-driven decision-making processes. You will work collaboratively with cross-functional teams to develop robust data pipelines and optimize data architectures.

Ajax Systems creates and produces security systems for smart homes, supporting more than 4.5 million users across 187 countries. The company’s team includes over 6,000 people and manages an ecosystem of 280 devices, along with mobile and desktop applications and a reliable server infrastructure. Role overview The SAP Project Manager position is based in Kyiv. This role centers on managing projects that enhance internal ERP systems. The main aim is to improve and simplify processes for internal users, ensuring that the company’s operations run smoothly and efficiently. What you will do Lead SAP-related projects from planning through implementation Coordinate improvements to ERP systems Work closely with internal teams to streamline business processes Requirements Experience managing SAP projects Strong understanding of ERP systems Ability to work onsite in Kyiv

About Ajax Systems Ajax Systems designs and manufactures security solutions used by over 4.5 million people and 330,000 professionals in more than 180 countries. The company offers a portfolio of 280 devices for intrusion detection, video surveillance, fire safety, and automation, protecting homes and businesses of all sizes. Ajax Systems is based in Kyiv and continues to grow rapidly each year. Quality Assurance at Ajax Reliability and stability are essential for security systems. The QA Department at Ajax Systems is involved in every stage of product development, manufacturing, and ongoing improvement. QA engineers here do more than routine testing. They investigate issues across hardware, software, and system integrations. Testing often involves simulating real-world extremes: movement by people and animals, harsh weather, temperature swings, and even controlled fire or flooding events. Role Overview: Middle Manual QA Engineer This position is part of the Automation Department in Kyiv. The team is looking for someone with strong manual QA skills to help ensure the quality and reliability of Ajax Systems’ expanding product line.

Join Atto Trading, a leading quantitative trading firm established in 2010, renowned for our innovative high-frequency trading strategies. As we continue to grow our international team, we are eager to welcome a skilled Data Engineer who will be instrumental in the development of our extensive Data Lake, catering to an increasing array of research and production datasets. Our collaborative culture fosters learning and innovation, empowering our team to tackle complex challenges and drive profitability through rapid market responsiveness.Key Responsibilities:Design and manage high-performance, scalable on-premise data storage systems optimized for extensive data access and analytics tasks.Configure and oversee compute clusters for distributed data processing.Develop capacity and scalability plans to support annual data growth exceeding 100TB.Create efficient monitoring and alerting systems to anticipate growth trends and manage critical situations proactively.Build, automate, and maintain various data pipelines to ensure smooth data flow.Enhance existing and establish new data checks to ensure data integrity.Implement a comprehensive on-premise Data Lake connected to VAST storage for normalized market data across multiple sources including:US Equities, US Futures, and SIP feedsAdditional market data sources as they become availableSecurity Definition data for various marketsPrivate column dataDevelop and manage end-to-end data pipelines with monitoring to ensure data quality and governance.Analyze existing data models and usage patterns to identify bottlenecks and optimization possibilities.Create metadata and catalog layers for efficient data discovery.Design event-driven architectures for near real-time market data processing.Oversee ETL/ELT data pipelines using tools like Prefect or Airflow, ensuring robustness and clear operational ownership.Guarantee fault tolerance, scalability, and availability across our systems.Collaborate with traders, quantitative researchers, and other stakeholders to enhance the usability and performance of the Data Lake.

Welcome to Liven! We are crafting a global ecosystem of self-regulation products that empower individuals to disengage from emotional autopilot and cultivate better relationships with themselves.Within our ecosystem, we offer:Self-discovery Companion — an app chosen by over 2.5 million users. It provides a space for self-exploration through AI coaching, mood tracking, audio practices, and bite-sized learning.Online Coaching — sessions with certified experts to navigate complex situations.Supplements — for physical recovery and body support.We are on a continuous expedition with ambitious plans to expand our ecosystem.Liven is a company for the curious. We are driven by curiosity — an intrinsic need to ask questions, dig deeper, and not shy away from the unknown challenges.Our passion lies in creating products and solutions that genuinely help. Our curiosity and experimental culture exist to discover better ways to support and guide individuals on their self-discovery journeys.Currently, we are seeking a Data Engineer / Analytics Engineer at Liven.In this role, you will be responsible for establishing the company’s robust data foundation, designing storage architecture, and providing analytical teams with quality, ready-to-use data.Challenges Awaiting You:— Ensuring the continuous provisioning of necessary data to analytical teams across various business domains (marketing, product, operations) through stable integrations (using Airbyte and custom solutions);— Organizing long-term DWH architecture (data layer development, modeling, ensuring data integrity);— Developing and optimizing our ELT processes and data transformations within BigQuery using Dataform, as well as implementing reliable process orchestration (with plans to transition to Airflow/Astronomer);What We Value:— Excellent SQL knowledge and a deep understanding of modern analytical warehouse construction concepts;— Practical experience with cloud data ecosystems (ideally GCP, BigQuery) and data transformation tools (Dataform/dbt);

We are seeking a skilled Middle Manual QA Engineer to join our dynamic team. In this role, you will play a critical part in ensuring the quality and functionality of our web applications. Your expertise in manual testing will help us deliver exceptional products to our users.

Ajax Systems is a leading international technology company and the largest manufacturer of security systems in Europe. With over 4.5 million end users and 330,000 PRO users across more than 180 countries, our Ajax products are trusted for comprehensive solutions in protecting residential and commercial properties of all scales. Our portfolio includes 280 devices designed for intrusion detection, video surveillance, fire safety, and comfort automation. Each year, we experience significant growth both in team size and global user base.The development of devices at Ajax is spearheaded by our R&D department, which comprises four specialized divisions: System, Device, Automation, and Quality Assurance (QA).The Device Department focuses on the creation of security and automation devices, taking on serious challenges in areas such as:- Low-Power: devices designed to operate for extended periods on standard batteries;- Cost Efficiency: mass-produced products must remain within the medium price segment;- Design for Manufacturing (DFM) and Design for Human (DFH): circuitry, casings, and other components must be easily reproducible in the production of hundreds of thousands of devices without sacrificing quality.Development primarily targets STM32 (but also includes other MCUs and SoCs), utilizing Embedded C. We have built a strong expertise with talented Hardware and Embedded C engineers, industrial designers, and mechanical engineers.

We are on the lookout for a skilled developer with extensive experience in Oracle SQL and PL/SQL, particularly with Exadata, as well as a strong background in report building.The BI Reporting Department is one of the key units within the Kyivstar.Tech IT department. We empower businesses to accurately assess their growth dynamics and monitor key performance indicators and plans in a timely manner. Our team collaborates closely with internal business clients, fostering a friendly atmosphere and a robust team spirit.If you are passionate about working with large datasets, eager to enhance your reporting development skills, including data visualization, and are keen to assist businesses with daily analytics, we would love to meet you!About Us Kyivstar.Tech is a Ukrainian hybrid IT company and a resident of Diia.City. We are a subsidiary of Kyivstar, one of the largest telecommunications operators in Ukraine. Our mission is to transform lives in Ukraine and around the world by creating technological solutions and products that fulfill the potential of companies and the needs of users. With over 600 specialists, KS.Tech works daily across various domains: mobile and web solutions, as well as the design, development, support, and maintenance of high-performance systems and services. We believe in innovations that truly bring about quality changes, constantly challenging traditional approaches and solutions. Each of us is an advocate of an entrepreneurial culture that encourages continuous development and creativity.