Jobs at Djinni

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

PlainID is an authorization platform that centralizes policy management and enforces dynamic, real-time access control across applications, APIs and data. It combines centralized policy definitions with decentralized enforcement points to deliver low-latency authorization at scale. Integrated with IAM providers such as SailPoint, Okta and Azure AD, and supporting PostgreSQL, Elasticsearch and MongoDB back ends, PlainID serves over 100 enterprise clients in finance, healthcare and other regulated industries. The platform processes millions of authorization requests per day, addressing the industry challenge of fragmented and static access control. Experienced engineers ensure reliability, security and performance in this high-volume, data-intensive environment.

About the Role:

We are seeking a Senior Backend Engineer (Go/Java) to drive the evolution of the PlainID authorization platform. In this role you will own the design and implementation of critical backend components, working on existing microservices in Go and Java to add new features, migrate legacy code and optimize performance. You will collaborate with product managers, frontend developers, QA engineers and R&D teams to translate customer requirements into production-ready solutions. Given the platform’s complexity, high release cadence and multi-tenant cloud foundation, you will onboard quickly, leverage AI-assisted coding tools and operate with autonomy in cross-functional feature teams. Your contributions will directly influence platform scalability, security and customer satisfaction.

Key Responsibilities:

• Design and develop custom Go and Java solutions to address specific customer requirements or prototype product capabilities.
• Collaborate with R&D, product managers, frontend developers and QA engineers to transition custom implementations into production-grade features.
• Write high-performance, maintainable and reusable code in Go and Java following established design patterns.
• Establish and maintain a scalable multi-tenant cloud foundation on AWS and GCP.
• Define, monitor and meet performance metrics and KPIs for backend services.
• Integrate and manage data storage solutions including PostgreSQL, Elasticsearch and MongoDB.
• Deploy and operate containerized applications using Docker and Kubernetes in production environments.
• Use AI-assisted development tools (e.g., Copilot, Cursor) to accelerate code comprehension and delivery.
• Mentor team members and contribute to a fast-paced, monthly release cycle with heavy quality checks.

Required Competence and Skills:

• Bachelor’s or Master’s degree in Computer Engineering or a related field.
• Minimum 7 years of hands-on experience designing and developing backend solutions in Go and/or Java.
• At least 5 years of experience with Spring Boot for Java microservices.
• At least 5 years building and maintaining containerized applications with Docker and Kubernetes.
• At least 3 years working with relational databases (PostgreSQL) and NoSQL stores (Elasticsearch, MongoDB).
• Proven track record designing and operating multi-tenant architectures on AWS and GCP.
• Strong proficiency in Unix/Linux environments and command-line tools.
• Demonstrated ability to write high-performance, maintainable and reusable code.

Nice to Have:

• Experience with authorization and authentication processes.
• Deep understanding of cybersecurity principles and policy-based access control.
• Familiarity with AI-driven development tools (Copilot, Cursor).

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

About us:

Atlaslive is a dynamic iGaming platform that provides the best quality software solutions for iGaming business. We create a live connection between business ambitions and opportunities. Atlaslive is recognized worldwide as one of the leading Sportsbook Platforms, as well as the Best Sports Betting Provider and a Rising Star in Sports Betting Technology within the CEE, Baltic and Nordic markets. Atlaslive, the tech behind the game.

Database Administrator (PostgreSQL)
Location — remote

Requirements:

• 5+ years experience as Database Designer and Administrator with cloud deployment.
• Strong knowledge in maintenance, and administration of PostgreSQL.
• Experience in performance optimization and DDL/DML reviews processes.
• Experience with AWS services: Amazon RDS.
• Excellent knowledge of DBA monitoring tools, Data Quality and third party tools.
• Ability to participate in the on-call incidents for operational issue escalation.

Key Responsibilities:

• SQL and NoSQL databases ownership (DevOps Infrastructure as Code, pipelines CI/CD).
• DB ad-hoc commands execution — e.g. run query on prod DB, create index etc.
• Designing and implementing databases — assist teams with developing and designing.
• Data security — access management, sensitive data protection.
• Upgrading and patching database — follow the latest updates and security patches.
• Monitoring database logs and alerts.
• Data integrity — ensure data consistency and accuracy.
• Maintenance — regular maintenance procedures.
• Backing up and recovery — backup and recovery procedures.
• Performance tuning — assist teams with performance issues.
• Troubleshooting and problem-solving — improving existing and innovative solutions.
• DB capacity planning — capacity forecast for the future.
• Documentation — db design, configuration, playbooks.
• Experienced with AWS or another Cloud Providers.
• Experience with NoSQL databases such as MongoDB, Elastic Monitoring.

Nice to Have:

• Strong knowledge in maintenance, and administration Mongo databases.
• Experience with AWS services: Amazon Redshift, Amazon DynamoDB, Amazon Elasticache, Amazon DocumentDB (MongoDB).
• Basic knowledge of Linux, git, CI/CD.
• Excellent knowledge of data backup, recovery, security, integrity.

Important to Know:

• Periodical duty on-calls are paid.
• The team includes 2 DBAs, and we are looking to hire 2 more candidates to strengthen the team.

Career Growth & Opportunities:

• Become part of a global leader in iGaming innovation.
• Access to professional development programs and industry events.
• Opportunity to work with top-tier experts in cutting-edge technology.
• Drive real impact in a fast-growing international market.
• Flexible career progression within a scalable and adaptable platform.

Working Conditions:

• Vacation: 22 working days per year, plus official public holidays.
• Sick Leave:

*5 paid sick days annually (no certificate required).

*Up to 10 additional days covered at 100% with a valid medical certificate.

• Equipment: Personal budget for necessary hardware and tools.
• Education: Annual learning & development budget to support your professional growth.

• Health & Wellness: Access to a personal limit within our benefit cafeteria system for health-related expenses.

   

Join our passionate and talented team and be at the forefront of transforming the iGaming industry with groundbreaking live tech solutions. If you’re a visionary professional eager to shape the future of iGaming, Atlaslive invites you to apply and drive our continued success in this dynamic market.

Atlaslive — The Tech Behind the Game.

All submitted resumes undergo a thorough review. If we do not contact you within 5 business days after your application, it means that we are unable to proceed with your candidacy at this time. However, we appreciate your interest in our company and will keep your contact details on file for future opportunities.

🚀AIMPROSOFT - Senior Back-End Developer (Java) Opportunity! 

Aimprosoft, a fast-growing IT company, is looking for a Senior Java Developer to join a long-term (6–12 months, with a strong likelihood of extension depending on project progress and business needs) international engagement focused on enterprise platform modernization and backend evolution in the Supply Chain / Logistics domain. 

The platform is a mission-critical enterprise system used by large global customers to support demand planning, inventory optimization, and supply chain decision-making. It operates at scale, with complex business logic, legacy components, and high reliability requirements. 

🎯About the project & role: 

You will join an experienced engineering environment where modernization is performed incrementally and carefully, without disrupting existing business workflows. 

The work focuses on: 

• Upgrading a legacy Java-based platform to newer Java versions (Java 8 → Java 17+) 
• Framework and dependency migrations (Spring, Hibernate, testing frameworks) 
• Modernizing backend architecture while preserving data models 
• Exposing APIs (GraphQL) on top of existing systems 
• Supporting and integrating with an ongoing 4GL migration 
• Collaborating closely with long-tenured architects who own the domain knowledge 

Your mission is to help safely modernize a large-scale enterprise backend, improve maintainability, and support long-term evolution of the platform. 

 
🔥What We Need From You: 

• 4+ years with Java 8+ 
• Experience upgrading or maintaining large legacy Java systems 
• English: Upper-Intermediate (B2) or higher for communication with international teams 
• Solid understanding of Spring Framework concepts, Hibernate / JPA fundamentals, Relational databases and SQL 
• Experience with Gradle 7.x / 8.x 
• Experience with Tomcat 10.x / 11.x 
• Practical experience designing or implementing GraphQL APIs 
• Experience with testing (JUnit concepts, mocking, isolation) 
• Strong debugging and troubleshooting skills 
• Ability to read and understand unfamiliar code 
• Comfortable working with incomplete documentation 
• Strong analytical mindset-ability to translate business needs into data-driven campaigns. 
• Ability to challenge AI outputs, validate results, and remain the final decision-maker 

📌Nice to have: 

• javax → jakarta migration experience 
• JUnit 4 → JUnit 5 migration experience 
• Experience with Spring Security 6.x 
• To be available from 5pm to 9pm Kyiv time (4–5 hours overlap with Central Time (CT)) 
• Experience in Supply Chain / Logistics domain project 
• Experience supporting or integrating with 4GL systems 
• Familiarity with gradual migration patterns 
• Bachelor’s or Master’s degree in Computer Science or related field. 

💼What We Offer: 

• Official military deferment (reservation) 
• A competitive salary that appreciates your skills and experience 
• Cozy atmosphere and modern approaches. We have neither bureaucracy nor strict management nor “working under pressure” conditions 
• Opportunity to implement your ideas, tools, and approaches. We are open to changes and suggestions aimed at improvement 
• Work on a strategic, large-scale international project with high visibility. 
• Remote-friendly culture with strong team collaboration. 

Ukraine (fieldwork format; trips to military bases and UAV ranges)
About the company and the role

At  Lendurai,  we enable the operation of unmanned aerial vehicles (UAVs) independent of global navigation satellite systems and radio link availability, using computer vision and machine learning technologies. We work with a number of UAV manufacturers, providing effective and affordable solutions for the security and defense sector. The core of our team has significant experience in aerospace engineering and computer vision application development in Europe, including at Bolt (EE), Open Cosmos (UK) and Starship Technologies (EE). Lendurai has offices in Estonia and Ukraine.

As  a UAV Test and Integration Engineer  in Ukraine, you will work in the national UAV ecosystem: directly with military users, with manufacturers integrating Lendurai solutions into their platforms, and at the range during testing. You will become a key link between military units (users), Ukrainian UAV manufacturers, and our remote engineering and product teams.

Your tasks

• Work with military technical teams to resolve technical, configuration, and integration issues on FPV and multirotor platforms using Lendurai solutions.
• Support Ukrainian UAV manufacturers in integrating Lendurai software and hardware into their platforms and ground control systems.
• Plan, conduct, and document field tests and test flights in collaboration with defense customers and partners.
• Integrate and test radio channels and video links on UAV platforms, including MILERLS, analog and digital video systems, repeaters, and ground stations.
• Configure, flash and optimize MILERS / MILBETA firmware.
• Perform PID tuning and other optimization of controller parameters for multirotor and fixed-wing platforms according to specific mission profiles.
• Diagnose and troubleshoot mechanical, electrical, radio, and firmware faults on site; maintain UAV platforms and ground stations in operational condition for tests and demonstrations.
• Collect, structure, and transmit logs, telemetry, and video footage from flights; provide engineering and product teams with data to improve algorithms and system experience.
• Train end users (UAV pilots, technicians, instructors) to configure, operate, and maintain systems based on Lendurai solutions.
• Work closely with remote engineering teams (Estonia/other countries): reproduce identified issues, verify the functionality of proposed fixes, and communicate information about real system limitations and edge cases.
• Operate with safety as a priority near combat zones (not forward): conduct risk assessments, maintain clear communication with unit commanders, and adhere to disciplined on-site work procedures.

Who are we looking for?

Mandatory requirements

Practical experience with FPV in combat or near-combat conditions:

• Proven experience flying FPV drones in manual modes (Acro), preferably during combat missions or realistic training missions.

Deep expertise in radio system and firmware configuration:

• Advanced MILERS and MILBETA setup and firmware skills.
• Experience integrating and troubleshooting various radio stacks (video, control, telemetry, repeaters) on FPV and multirotor platforms.

Experience with flight controllers and setup:

• Experience in PID tuning and optimization of related parameters for multi-rotors.
• Reliable work with common stack controllers (Betaflight / INAV / Ardupilot / PX4 or similar).

Language and place of work:

• Fluent in Ukrainian and English (oral and written).
• Residence in Ukraine and willingness to regularly travel to UAV bases and test ranges.

Community and interaction:

• Activity or established connections in the Ukrainian community of military UAV developers (units, volunteers, OEM manufacturers, integration laboratories, R&D teams).
• Willingness to work in close proximity to combat zones (not on the front lines) and interact with military end users on a daily basis.
• Ability to effectively collaborate with remote engineering teams via calls, chats, and structured feedback.

Desirable advantages

• Experience in participating in military or volunteer R&D projects in the field of UAVs (development of individual frames, payloads or mission profiles).
• Experience in creating and maintaining ground stations and repeater solutions for long-range FPV.
• Python skills or scripting skills for quick log analysis, telemetry processing, or development of support tools.
• Experience working with defense or security organizations or with manufacturers (OEM) as a field technical engineer.
• Military service experience or equivalent practical operational experience.

What we offer 

• Monthly salary before tax €2,700–3,300 - depending on experience and contribution to the result.
• The ability to directly influence how advanced autonomous technologies are applied by real units in combat conditions.
• Close collaboration with an experienced and focused engineering team.
• Working with real users, advanced technical platforms, and tasks that have a direct impact on defense capabilities.
• The company provides employees with reservations from military mobilization for the period of employment at the company in accordance with the requirements of current legislation.

Join Lendurai to jointly develop modern autonomy and navigation technologies for units working to defend Ukraine.

- - - - - - - - - - - - -

Про компанію та роль

У Lendurai ми забезпечуємо роботу безпілотних літальних апаратів (БпЛА) незалежно від глобальних навігаційних супутникових систем та наявності радіоканалу, використовуючи технології комп’ютерного зору та машинного навчання. Ми співпрацюємо з низкою виробників БпЛА, надаючи ефективні та доступні рішення для сектору безпеки і оборонного. Ядро працівників нашої команди має значний досвід в аерокосмічній інженерії та розробці застосунків комп’ютерного зору в Європі, зокрема в компаніях Bolt (EE), Open Cosmos (UK) та Starship Technologies (EE). Lendurai має офіси в Естонії та Україні.

Як Інженер з випробувань та інтеграції БпЛА в Україні, ти працюватимеш у національній UAV-екосистемі: безпосередньо з військовими користувачами, з виробниками, які інтегрують рішення Lendurai у свої платформи, а також на полігонах під час випробувань. Ти станеш ключовою ланкою між військовими загонами (користувачами), українськими виробниками БпЛА та нашими віддаленими інженерними й продуктовими командами.

Ваші завдання

• Працювати з військовими технічними колмандами для розв’язання технічних, конфігураційних та інтеграційних питань на FPV- і мультироторних платформах із використанням рішень Lendurai.
• Підтримувати українських виробників БпЛА під час інтеграції програмного та апаратного забезпечення Lendurai у їхні платформи й наземні системи управління.
• Планувати, проводити та документувати полігонні випробування та тестові польоти спільно з оборонними замовниками й партнерами.
• Інтегрувати та тестувати радіоканали й відеолінки на платформах БпЛА, зокрема MILERLS, аналогові та цифрові відеосистеми, ретранслятори та наземні станції.
• Налаштовувати, прошивати та оптимізувати прошивки MILERS / MILBETA.
• Виконувати PID-налаштування та іншу оптимізацію параметрів контролера для мультироторних і літакових (fixed-wing) платформ відповідно до конкретних місійних профілів.
• Діагностувати та усувати механічні, електричні, радіо- й програмно-апаратні (firmware) несправності на місці; підтримувати платформи БпЛА та наземні станції в робочому стані для тестів і демонстрацій.
• Збирати, структурувати й передавати логи, телеметрію та відеоматеріали з польотів; надавати інженерним та продуктовим командам дані для вдосконалення алгоритмів і досвіду роботи з системою.
• Навчати кінцевих користувачів (пілотів БпЛА, техніків, інструкторів) налаштовувати, експлуатувати й обслуговувати системи на базі рішень Lendurai.
• Тісно співпрацювати з віддаленими інженерними командами (Естонія/інші країни): відтворювати виявлені проблеми, перевіряти працездатність запропонованих виправлень та передавати інформацію про реальні обмеження роботи системи й нетипові сценарії (edge cases).
• Працювати з пріоритетом безпеки поблизу бойових зон (не передова): проводити оцінку ризиків, підтримувати чітку комунікацію з командирами підрозділів і дотримуватися дисциплінованих процедур роботи на місці.

Кого ми шукаємо

Обов’язкові вимоги

Практичний досвід роботи з FPV у бойових або наближених до бойових умовах:

• Підтверджений досвід керування FPV-дронами в ручних режимах (Acro), бажано під час бойових завдань або реалістичних тренувальних місій.

Глибока експертиза в конфігурації радіосистем і прошивок:

• Просунуті навички налаштування та прошивки MILERS і MILBETA.
• Досвід інтеграції та усунення несправностей різних радіостеків (відео, управління, телеметрія, ретранслятори) на FPV- і мультироторних платформах.

Досвід роботи з контролерами польоту та налаштуванням:

• Досвід PID-налаштування та оптимізації пов’язаних параметрів для мультироторів.
• Впевнена робота з поширеними стек-контролерами (Betaflight / INAV / Ardupilot / PX4 або аналогами).

Мова та місце роботи:

• Вільне володіння українською та англійською мовами (усно й письмово).
• Проживання в Україні та готовність регулярно виїжджати на бази БпЛА та полігони для тестів.

Спільнота та взаємодія:

• Активність або налагоджені зв’язки в українській спільноті розробників військових БпЛА (підрозділи, волонтери, OEM-виробники, інтеграційні лабораторії, R&D-команди).
• Готовність працювати у близькості до бойових зон (не на передовій) і щоденно взаємодіяти з військовими кінцевими користувачами.
• Здатність ефективно співпрацювати з віддаленими інженерними командами через дзвінки, чати та структурований зворотний зв’язок.

Бажані плюси

 Досвід участі у військових або волонтерських R&D-проєктах у сфері БпЛА (розробка індивідуальних рам, корисних навантажень або місійних профілів).

• Досвід створення та обслуговування наземних станцій і ретрансляторних рішень для FPV великої дальності.
• Навички Python або написання скриптів для швидкого аналізу логів, обробки телеметрії чи розробки допоміжних інструментів.
• Досвід роботи з оборонними чи безпековими структурами або з виробниками (OEM) у ролі технічного інженера на виїздах.
• Досвід військової служби або еквівалентний практичний операційний досвід.

Що ми пропонуємо

• Місячна заробітна плата до оподаткування €2,700–3,300 - залежно від досвіду та внеску в результат.
• Можливість безпосередньо впливати на те, як передові технології автономності застосовуються реальними підрозділами в бойових умовах.
• Тісна співпраця з досвідченою та сфокусованою інженерною командою.
• Робота з реальними користувачами, передовими технічними платформами та завданнями, що мають прямий вплив на обороноздатність.
• Компанія надає працівникам бронювання від військової мобілізації на період роботи в компанії відповідно до вимог чинного законодавства.

Приєднуйся до Lendurai, щоб разом розвивати сучасні технології автономності та навігації для підрозділів, які працюють на захист України.

We’re hiring: Senior Backend Engineer / Solution Architect (Node.js / TypeScript)
Product: E-commerce solution with AI integration
Format: Remote

What you’ll do

• Build and maintain backend services & APIs (plus fullstack parts when needed)
• Contribute to solution design and implementation
• Deliver features with a focus on maintainability and performance

Requirements

• 3+ years of experience
• Strong JavaScript/TypeScript
• Strong knowledge of the Node.js ecosystem
• Database experience
• React experience (fullstack scope)

What we offer

• 24 paid vacation days/year (after probation)
• Paid sick leave (after probation)
• Remote work option
• Company-supported English courses

We’re a product powerhouse building a full-stack ecosystem for iGaming businesses. 40M+ players. 250 brilliant minds. One bet: our technology is so rock-solid that we stake our own business on it.
From our hubs in Ukraine, Georgia, the UK, and the Philippines, we blend real-world experience, a battle-tested Tech Radar, all within an open-door culture. 

Turnkey isn’t just our biggest team — it’s the engine room of everything we build.
It’s the tech our partners bet their business on: no patchwork, no plug-ins. Just one battle-tested ecosystem designed to launch, grow, and lead in the most dynamic markets.
Turnkey unites VeliHorizon (our core platform), VeliX (the experience layer), and VeliPayments — the trio powers every player's journey and operator’s next big leap.

We invite the Team Lead Node JS to join the VeliHorizon team.
VeliHorizon — our battle-tested platform built on real gaming floors. High-performance, microservices at its core, API-first by design — it keeps operations smooth, data sharp, and transactions flying.
Every click, spin, and payout runs through Horizon — proven in the toughest conditions, powering thousands of moments a second. Built by cross-functional teams who own every detail — from first idea to live performance.

In this role, you will:

• Hands-on contribution and leadership of team feature development, delivery and supervising in quality assurance
• Lead code, application and architecture design review, improvements and R&D activities
• Lead and participate in SRE practice, housekeeping, on-call, correction-of-errors, continuous improvement process and practice in a team
• Participate in cross-functional activities and collective leadership processes Team Lead Catch Up, Scala Community and Technical Board
• Manage and refine the technical tools, frameworks, and best practices used in the backend stack
• Continuously enhance the CI/CD pipelines to streamline development, testing, and deployment
• Support hiring new team members and invest in maintaining high level of technical experience of teams members
• Maintain comprehensive and up-to-date documentation for backend services and systems
• Constantly improve end-user experience, optimizing product performance

Skills and experience you will need:

Must have:

• At least 5 years of experience in backend development using JavaScript/TypeScript (NodeJs)
• Minimum of 2 years of experience as a Backend Team Lead.
• Strong experience with NestJs, Fastify
• Good knowledge of PostgreSQL
• Experience with Kafka
• Experience with Redis
• Understanding of Agile methodologies and DevOps best practices
• Expertise in performance optimization for backend services
• Strong proficiency in REST API gRPC API
• Experience with AWS, Docker, k8s
• Knowledge of architectural patterns and design patterns
• Experience with high-load
• Experience with building and maintaining CI/CD pipelines

Will be a plus:

• Experience with Clickhouse
• Experience with Sentry, Grafana, ELK
• Experience with WebSockets

Project Description:

Our Client is one of the largest in UK groceries and general merchandise retailer is in the middle of transformation to technology Company in retail. As part of this exercise renovation of technology landscape taking place across the Company. As a partner, we support our client in this journey and help to develop from scratch new applications for various departments (Supply Chain, Product Lifecycle Management, Finance, HR etc.). Our teams are responsible for development of platform components in an Agile environment together with client, based on event-based Microservices architecture. As a developer, you will work in team of professionals in your Country and collaborate with experts from all over the world to develop modern high-loaded application in a Cloud environment.

Our ideal Candidate is passioned smart individual with a strong engineering background, who is ready to work in a self-managed team, accept challenges and take an active role in their resolutions. Successor will not only solve engineering tasks but take responsibility for the technology Company business goals resolution together with the Product owner and business stakeholders. Your effort will help our client to meet their passion to satisfy the most demanded client and to become the number one technology company in retail. In return, you will have ability to grow your technical skills, extend your network and share knowledge with experts all over the world.

Responsibilities:

Collaborate early with engineering teams, participating in refinement sessions to influence requirements and define test strategies.
Design, develop, and execute comprehensive test suites for functional and regression testing.
Automate tests using modern frameworks such as Playwright for both UI and API testing.
Conduct performance and load testing using tools like Gatling or k6, and interpret the results to ensure system scalability.
Perform cross-browser and cross-device testing to validate consistent user experience across platforms.
Set up and maintain test environments and contribute to CI/CD integration for automated test execution.
Prepare and present clear test reports, documenting test coverage, results, and any identified defects.

Mandatory Skills Description:

Strong understanding of Quality Assurance methodologies, with a holistic approach to testing across the development lifecycle.
Hands-on experience with Playwright
Knowledge of performance testing tools such as Gatling or k6.
Proficiency in test infrastructure setup, including working knowledge of CI/CD pipelines.
Good understanding of HTTP protocols and browser developer tools for debugging and analysis.
Familiarity with cross-browser/device testing strategies.

Nice-to-Have Skills Description:

Azure cloud hands-on experience
Experience with the latest versions of Java
Technical team management experience

Languages:

English: B2 Upper Intermediate

Vacancy: Media Buyer (Middle / Senior) – Arbitrage Team

We are looking for a Middle or Senior Media Buyer to join our arbitrage team.

Key Responsibilities in the Arbitrage Team:

• Managing advertising campaigns on Facebook (Feed, Reels, Lead Ads, Advantage+) to drive traffic and conversions.
• Developing and adapting creatives for arbitrage campaigns: either ordering from a designer or creating them independently.
• Optimizing ad campaigns with a focus on ROI, CPA, and other key performance indicators.
• Conducting A/B testing of creatives, offers, and traffic acquisition strategies.
• Working with analytics tools and trackers (Keitaro, Binom, AppsFlyer, GA, Amplitude).
• Analyzing campaign performance and providing suggestions for efficiency improvement.
• Potential future opportunity to manage a team and advance to Team Lead / Senior Buyer.

Requirements:

• Proven experience in Media Buying specifically in arbitrage.
• Experience with Facebook Ads.
• Experience managing budgets:
  • Middle: $30k–$70k per month, ROI ≥25% (ideal ≥30%)
  • Senior: $70k+, ROI ≥30%
• Ability to work with creatives, preferably developing or adapting them independently.
• Advanced skills in campaign optimization, including A/B testing, ROI/CPA analysis, budget and strategy optimization.
• Tools & Analytics:
  • Required: Keitaro
  • Preferred: Binom, AppsFlyer, GA, Amplitude

Conditions:

• Salary: 650 USDT + bonus
• Bonus system: very attractive, with the potential for significant income increase depending on campaign results and ROI.

Project Description:

We are looking for a senior software engineer to join our team in a derivatives trading company with a broad product portfolio, with specific emphasis on interest rates, currency, and related derivative products.
The candidate will be a key contributor to enhance and maintain our trading system. The role will interact with the larger development team, share design and solutions, and contribute to the overall objectives of the development team.
All the newly built programs, including the Modernisation projects, are developed in C#. For enhancing legacy programs or developing new features of legacy functions, the developers will have to develop in C.

Responsibilities:

- This role will be part of the trading system development team to enhance post-trade processing functions such as payment processing or trade regulatory reporting.
- The role will take responsibility to design and develop applications to enhance existing business functions.
- The role will be involved in projects to migrate legacy systems into new platforms, and as such, he or she has to be a quick learner and also be adaptive to new technologies.
- This role will take responsibility for supporting the trading systems, including providing answers to users' enquiries or resolving batch job issues.
- The role will be part of the development team. He or she will need to follow development standards and contribute to the overall agenda of the team.

Mandatory Skills Description:

- 6-7 years of experience in a large & complex application development environment involving complicated data schemas with C#
- Experience with C/C++ min. 3 years
- 2+ years of experience with leading a team (tech lead, team lead)
- Experience in application designs for complicated process flows
- Experience in analysing and designing complicated Data/Object Relations
- Experience in OOD/OOP, especially in C#
- Strong SQL knowledge
- 2+ years in financial industry, experience with trade flows, trade process, fixed income products
- Experience working with global team, good communication and transpersonal skills
- Must be a good team player and can work cooperatively or independently
- Quick learner and problem solver

Nice-to-Have Skills Description:

- Python knowledge highly preferred
- FIX protocol experience
- messaging systems experience

Languages:

English: B2

Job Opening: Media Buyer (YouTube / TikTok) – Gambling (Remote)

We are looking for an experienced Media Buyer to manage advertising campaigns on YouTube and TikTok in the gambling industry. Our client is a product company that independently develops and promotes its own products, providing unique opportunities to directly impact results and scale campaigns.

What we offer:

• Salary: very competitive, reflecting your experience and skills.
• Bonuses: additional performance-based incentives.
• Work in a professional team with opportunities for career growth.
• The chance to test creatives and strategies across different geos and verticals.

Responsibilities:

• Setting up, managing, and optimizing campaigns on YouTube and TikTok Ads.
• Working with various ad formats: In-Feed, Story, Skippable and Non-Skippable Ads, TrueView, Bumper Ads, etc.
• Analyzing campaign metrics: CTR, CVR, CPI, ROAS, LTV, CPM.
• Testing creatives and hypotheses, audience targeting, segmentation, and remarketing.
• Using trackers and analytics platforms to monitor ROI and optimize spending.
• Preparing reports on campaign performance and suggesting ways to improve efficiency.
• Monitoring advertising trends, platform algorithms, and competitors.

Requirements:

• At least 2 years of experience in Media Buying on YouTube and TikTok.
• Deep understanding of ad tools and formats on YouTube and TikTok.
• Experience in the gambling niche or with verticals with high conversion rates.
• Understanding of CPA, CPI, LTV, ROAS, and other key performance metrics.
• Experience with trackers and analytics tools (Adjust, Appsflyer, Voluum, or similar).
• Ability to test and scale campaigns across Tier 1 / Tier 2 / Tier 3 geos.
• English proficiency sufficient for reading professional documentation and communicating with platforms.

Nice-to-have:

• Experience with dynamic creatives and video content generation.
• Skills in campaign automation and optimization scripts.

We are looking for someone who:

• Loves experimenting with traffic and creatives.
• Can make quick decisions and scale successful campaigns.
• Takes a systematic approach to campaign analysis and optimization.

Location: fully remote.

If you are ready to take YouTube and TikTok campaigns to the next level and earn a rewarding salary with bonuses — we are waiting for you!

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

About the client:
Our client is the AI operator for SMBs. The company finds missed opportunities and follows up on signals you didn’t catch - knowing your business better than you do, acting on every lead ready to buy and every customer about to leave.
Built by the team behind leading AI startups with over 20 years of experience, the company is your always-on autopilot for prioritizing and acting on the most important messages.

About the role:
As Head of Operations, you will design, build, and run a shared operational foundation across the group. Your mandate is to create scalable systems, eliminate inefficiencies, and ensure that operations run predictably as the companies grow.

Responsibilities:
- Improve and scale core operational functions, including HR, recruiting, legal operations, security, and internal processes across all companies.
- Design repeatable systems and workflows that support rapid growth without increasing executive overhead.
- Own HR operations, including onboarding, offboarding, people policies, and performance processes.
- Establish and manage recruiting operations across product, engineering, and service teams.
- Coordinate legal operations by working with external counsel and managing contracts, documentation, and corporate workflows.
- Support operational security and compliance processes, including audit preparation and ongoing evidence management.
- Partner with finance leadership to support invoicing, payroll workflows, and vendor operations.
- Translate leadership priorities into clear execution plans and ensure consistent follow-through across teams.
- Build, improve and maintain SOPs, documentation, and clear ownership across all operational areas.
- Identify operational risks, bottlenecks, and single points of failure and resolve them proactively.
- Standardize tools, processes, and execution where appropriate across the group to reduce duplication and improve efficiency.
- Ensure leadership experiences operations as reliable, predictable, and low-friction.

Requirements:
- 5+ years of experience in Operations, Business Operations, Chief of Staff, or similar roles in fast-growing companies.
- Proven experience building or improving HR, recruiting, and legal processes from scratch and scaling them over time.
- Experience working directly with founders or executive leadership teams.
- Strong systems thinking with the ability to design processes that scale across multiple teams or companies.
- Comfort operating across multiple functions and priorities in a fast-paced, evolving environment.
- High level of ownership, discretion, and integrity when handling sensitive information.
- Strong written and verbal English communication skills.

Nice to have: 
experience in service-based or hybrid product-and-service companies.

We are looking for a Financial Analyst for a remote work to support and oversee accounting, financial control, and reporting processes for our operations in Poland. The ideal candidate has strong knowledge of Polish accounting and tax regulations, experience in corporate finance or accounting, and is comfortable working in a fast-paced fintech/crypto environment. Fluency in Polish and Russian is required, with English being a strong plus.

Key Responsibilities:

• Oversight of the external accounting provider (outsourcing)
• Review and verification of the accuracy and completeness of financial reports provided by the outsourced provider
• Coordination of financial and tax accounting treatment for various operations
• Preparation of management reports and ad-hoc financial analysis for HQ
• Financial monitoring of cryptocurrency-related operations (exchanges, accounting, compliance)
• Communication with tax authorities and other regulatory bodies in Poland on matters related to finance, economics, taxation, and reporting (in Polish)
• Support of internal and external audits
• Participation in budgeting and forecasting
• Internal document control and compliance monitoring

Requirements:

• University degree in Finance, Accounting, or Economics
• Solid understanding of Polish accounting and tax regulations
• At least 3 years of experience in corporate accounting and tax as well as financial control or analysis
• Proven experience working with outsourced accounting providers
• Knowledge of Polish and Russian (both written and spoken)
• Proficiency in Excel, Power Query and Google Sheets; knowledge of BI tools is a plus
• Ability to work in a dynamic, fast-changing environment involving crypto assets

Nice-to-Have Qualifications:

• Experience in the crypto or fintech industry
• Understanding of cryptocurrency accounting specifics
• ACCA, CPA, or similar certification
• Experience in international companies
• Knowledge of English language

Vacancy: FB Media Buyer (Experienced, Arbitrage Team)
Work format: Remote

Our client is a professional arbitrage team with media buying experience since 2014 and iGaming experience since 2019. They are currently looking for an experienced Facebook Media Buyer who can deliver profit from day one and is ready to grow with the team.

Who we are looking for:

• A buyer with deep expertise in FB Ads, capable of independently launching, optimizing, and scaling campaigns
• Someone who focuses on results "here and now" and leverages them for growth
• A professional ready to test ideas, find solutions, and actively contribute to the team

Personal qualities:

• Responsibility: available online during working hours, punctual
• Hardworking: willing to put in the effort to achieve ambitious goals
• Proactivity: testing hypotheses, making independent decisions, communicating effectively with colleagues
• Curiosity: interest in media buying and affiliate marketing, eagerness to learn and share knowledge

Professional skills:

• Creating and generating creatives, preparing briefs for designers, and using modern AI tools
• Working with trackers, auto-uploads, and payment models
• Deep understanding of Facebook ad interfaces
• Analytics: identifying cause-and-effect relationships, making quick campaign adjustments, and maximizing ROI

What we offer:

• First 6 months: 50% of net profit with no limits
• Afterwards:
  • 30% of net profit — base
  • 40% — when profit reaches $20–30k
  • 50% — when profit exceeds $30k
• Career growth opportunities up to Team Lead, who earns 10% of their team’s profit

No fixed salary, but profit share is significantly above market rates for experienced buyers.

Project Description:

We are looking for a detail-oriented and proactive QA Manual Tester to join our Capital Markets QA team. This role focuses on testing Fixed Income Sales and Trading applications, ensuring the accuracy, reliability, and performance of systems that support front-office trading, order management, pricing, and risk.
 
You will work closely with developers and business analysts from different regions to validate complex workflows and ensure high-quality software delivery in a fast-paced financial environment.

Responsibilities:

Analyze business and functional requirements related to fixed income sales and trading workflows.
Design, document, and execute comprehensive manual test cases for front-office applications.
Perform end-to-end testing of trade lifecycle events.
Validate pricing, risk, and P&L calculations for various fixed income instruments.
Conduct regression and new feature testing.
Log, track, and retest defects using JIRA.
Collaborate with developers, BAs, and QA automation engineers to ensure test coverage and quality.
Participate in Agile ceremonies and contribute to continuous improvement of QA processes.

Mandatory Skills Description:

5+ years of experience in manual QA testing, preferably in capital markets or investment banking.
Previous experience plus strong understanding of Fixed Income products and trade lifecycle (ideally interest rate swaps, swaptions, cap flor or bonds)
Experience testing Sales & Trading platforms and/or risk systems.
Experience with test management and defect tracking tools.
Excellent analytical, communication, and documentation skills.

Nice-to-Have Skills Description:

Experience working in Agile/Scrum environments.
Understanding of front-office trading desks and real-time systems.

English B2

Rivex Software is an outsourcing company founded by experienced developers. For over 5 years, we’ve been building production-ready web tools for advertising and workflow automation.

We’re looking for a strong Middle Full-stack Developer to join an existing team and work on a real product — a platform for storing, managing, and uploading advertising creatives to multiple ad networks.

You’ll work on an already launched system used daily by internal teams and clients, improve existing functionality, and help build new features.

What you’ll do:

• Develop and maintain backend and frontend parts of the platform (Node.js / NestJS, React)
• Work with PostgreSQL and improve existing data models
• Integrate external APIs (ad networks, analytics, internal services)
• Develop frontend using React, Tailwind CSS, and TanStack Query
• Refactor and improve existing codebase together with the team
• Work with Google Cloud infrastructure (Cloud Run, related services)

What we expect:

• 4+ years of commercial experience in web development
• Confident experience with Node.js and PostgreSQL in production
• Solid frontend experience with React and modern data/state management
• Good knowledge of TypeScript and modern web application architecture
• Ability to work independently on tasks and collaborate within a team
• English at an Intermediate level or higher

Nice to have:

• Experience with Google Cloud Platform
• Experience working on long-living products

What we offer:

• Fully remote work
• Full-time, stable workload
• Interesting product focused on automating user acquisition workflows
• Opportunity to grow into a senior role