Jobs at Djinni

N-iX is looking for an experienced, proactive, and ambitious Senior Android Engineer to join our team and contribute to the development in Lviv Office.

Main Responsibilities:

• Design, develop, and maintain a high-quality native Android application
• Take ownership of features throughout the entire development lifecycle—from requirements analysis and technical design to delivery and production support
• Collaborate closely with UX/UI, QA, iOS, Product Management, Product Owners, and other engineering teams to align on requirements and specifications
• Understand existing application workflows, improve them where necessary, and support legacy functionality
• Act as a Subject Matter Expert in Android application development and maintenance
• Collaborate with the Mobile Architect and the development team on technical decisions, application architecture, roadmaps, and new features
• Investigate and resolve complex technical and production issues
• Conduct code reviews, promote engineering best practices, and share knowledge with other team members
• Mentor less-experienced developers and support their professional growth
• Analyze requirements, provide estimates, identify technical risks, and propose appropriate solutions
• Contribute to the development of simple, modular, maintainable, observable, and well-tested systems that can evolve over time
• Help improve development processes, CI/CD pipelines, application quality, performance, and release stability

Role Requirements:

• 6+ years of professional Android development experience
• Strong knowledge of Kotlin and practical experience with Java
• Strong knowledge of Kotlin Coroutines, Flows, asynchronous programming, and concurrency
• Experience with modern Android SDKs, Android Jetpack components, application lifecycle, and Material Design
• Experience with Jetpack Compose and/or XML-based UI development
• Strong understanding of Android application architecture, including MVVM, MVP, and Clean Architecture principles
• Good knowledge of SOLID principles, software design patterns, modularization, and testable application design
• Experience with dependency injection frameworks such as Koin, Hilt, or Dagger
• Hands-on experience with Bluetooth Low Energy, including BLE/GATT communication, connectivity, and troubleshooting
• Experience with networking and local data persistence, such as REST APIs, OkHttp/Retrofit, Room, or similar technologies
• Strong understanding of multithreading, memory management, caching, battery consumption, and mobile performance optimization
• Experience with Android profiling, debugging, crash analysis, and production monitoring tools
• Experience with unit, integration, and automated UI testing
• Experience with Git, code review practices, CI/CD pipelines, and Android application release processes
• Ability to break complex problems into smaller, loosely coupled, maintainable, and testable components
• Experience working in a Scrum environment and a solid understanding of Agile and Lean principles
• Upper-Intermediate or higher English proficiency
• Visiting office in Lviv 

Nice to Have:

• Experience with VoIP, real-time audio, or communication applications
• Experience with connected devices and custom communication protocols
• Experience with OTA firmware update flows
• Experience with JNI, Android NDK, or C/C++ integration
• Experience building AI-powered mobile features, integrating AI services, or working with on-device machine learning
• Experience publishing and managing applications through Google Play Console

The Ideal Candidate:

• Demonstrates a strong sense of ownership and takes responsibility for delivered solutions
• Has an Agile mindset and works effectively as part of a cross-functional team
• Is pragmatic and can find the right balance between an ideal technical solution, delivery timelines, and actual product needs
• Can independently analyze, plan, and estimate requirements
• Proactively identifies technical risks and proposes practical solutions
• Communicates clearly and constructively with both technical and non-technical stakeholders
• Is comfortable sharing knowledge, mentoring colleagues, and receiving feedback

We offer*:

• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Hi! We are looking for a Trainee/Junior Sales Development Representative who wants to start a career in B2B IT sales and grow professionally in this field.
 

Responsibilities:

• Research target companies and decision-makers
• Find and qualify potential leads via LinkedIn and other channels
• Write personalized outreach messages and email sequences
• Communicate with prospects via LinkedIn and email
• Maintain accurate lead data in CRM
• Learn from outreach results and continuously improve messaging
• Book qualified meetings for the sales team

Requirements:

• Basic understanding of IT / interest in B2B tech sales.
• Basic understanding of lead generation/prospecting
• Ability to research a prospect/company and identify relevant information for personalized outreach
• Ability to formulate ideas independently and write outreach messages without relying on AI-generated text
• Analytical skills – ability to work with data, track campaign performance, and suggest improvements 

• Upper-intermediate or higher English level (B2+) with the ability to write clear, natural, personalized messages

   

Nice to Have

• Work with CRM
• Experience with Linkedin/UpWork

We offer:

• Work schedule is flexible — fixed amount of hours that you need to work per month
• 20+ personal days for rest per year (10 days allocated every 6 months; unused days do not expire)
• Up to 12 official public holidays per year (each employee can decide how many to use)
• Birthday day off
• Reimbursement of 5 sick days per year
• Partial compensation for external courses/conferences (after the completion of the Adaptation Period)
• Partial compensation for external professional certifications
• Reimbursement for sports or massage
• Large library with a scheduled purchase of new books every half a year
• Yearly Individual Development Plan (after the completion of the Adaptation Period)

If you’re ready to make an impact in our Jelvix Team, I’m waiting for your resume. Apply now!

Evoplay is one of the leading B2B solutions for the online gaming industry, recognized for its innovative approach to game development and technological solutions. The key to this success is the teamwork of like-minded people who are passionate about a common goal and love games.

Position Overview:

As a Jira and Confluence Administrator, you will be responsible for the administration, configuration, and maintenance of our Jira and Confluence instances. You will play a critical role in ensuring the smooth operation and optimal utilization of these platforms to support our teams in project management, collaboration, and knowledge sharing.

Key Responsibilities:

1. Platform Administration:

• Administer Jira and Confluence instances, including user management, permissions configuration, and customization of workflows, issue types, and fields. Jira (server), сonfluence, Bitbucket, Crowd)

• Perform regular maintenance tasks such as upgrades, patches, and backups to ensure system reliability and performance.

2. Configuration and Customization:

• Configure Jira projects and Confluence spaces to meet the specific requirements of our teams and projects.

• Customize Jira workflows, screens, and dashboards to streamline processes and enhance productivity.

3. Integration and Automation:

• Integrate Jira and Confluence with other tools and systems used within the organization to facilitate seamless data flow and collaboration.

• Implement automation rules and workflows using Jira and Confluence plugins to optimize task management and documentation processes.

4. User Training and Support:

• Provide training and support to users on Jira and Confluence functionality, best practices, and troubleshooting techniques.

• Serve as the primary point of contact for user inquiries and technical issues related to Jira and Confluence usage.

5. Corporate IT Services:

• Administer other corporate IT services such as Gitlab, LDAP, GCP.

• Ensure the proper functioning and integration of these services with other business applications and systems.

Qualifications:

• Experience in a similar position for 2 years.

• Experience with Atlassian stack:

- Jira

- Confluence

- Bitbucket

- Crowd

• Understanding of the functioning of Linux systems.

We offer:

• L&D center with courses for employees and top managers;

• Rotation program;

• Medical іnsurance;

• Paid leave;

• Sick days;

• Self-learning library, access to paid courses;

• Stable payments;

• Evoplay discount program;

• Flexible work schedule / remote work;

• Group discussions and individual sessions with a psychologist.

Project Description:

We are DXC Luxoft Financial Services - an award-winning provider of technology solutions, dedicated to the Financial Services sector.

Join our international team and become a member of our open minded, progressive and professional team of financial services consultants. In this role you will be working on projects for biggest investment banks across the globe. You will have a chance to grow your technical and soft skills, and build a thorough expertise in the Capital Markets industry. On top of attractive salary and benefits package, we will invest into your professional training, and allow you to grow your professional career.

Team overview:
We are building a dedicated engineering squad in Bucharest (4 Java Developers + 4 QA Automation Engineers) to support a large-scale modernization and technical debt reduction program within financial markets IT systems.

Responsibilities:

This initiative focuses on:

- Upgrading legacy applications to modern Spring Boot versions (2.x → 3.x)
- Decommissioning and replacing Hazelcast across distributed systems
- Refactoring applications to align with modern, cloud-ready, stateless architectures
- Enhancing integration with event-driven systems using Apache Kafka
- Supporting applications connected to Murex batch and real-time processing flows

This is a high-impact program in a low-latency financial environment, where system stability, performance, and correctness are critical.

We are seeking a Java developer who can design and build with minimum supervision solutions for our team. The person needs to be knowledgeable on modern software development practices including Scrums, be up to date with the latest Java tools and frameworks and be able to work with the existing team to deliver solutions. The ideal candidate will be diligent, tenacious and delivery focused with a track record of building high quality solutions that are resilient and maintainable. Use of cloud technology is increasing, so experience working with AWS would be beneficial.


- Design and implement solutions for:
- Spring Boot & Hazelcast upgrades (including major version transitions)
- Analyze existing distributed system usage (caching, clustering, locking)
- Refactor applications toward stateless, scalable microservices
- Implement and optimize integrations using Kafka-based event-driven architecture
- Collaborate with QA, DevOps, and architecture teams on migration and rollout strategy
- Ensure high standards of performance, resilience, and fault tolerance
- Participate in code reviews, technical design discussions, and production support

 Post-project opportunity:
Following successful delivery of this modernization initiative, team members are planned to be reassigned to other strategic programs within the client’s long-term roadmap, offering continued growth and exposure to new initiatives.

Mandatory Skills Description:

Technical
• Strong experience in Java (11–17+)
• Deep knowledge of Spring Boot (microservices, REST APIs, configuration)
• Hands-on experience with Hazelcast or similar distributed caching technologies
• Experience with Apache Kafka
• JMS
• Oracle RDBMS
• Atlassian suite (e.g. JIRA, Stash and Jenkins, GitLab)
• GIT
• Unix/Linux/Windows

Architecture & Systems
• Microservices architecture and distributed systems
•Experience with:
  - Distributed caching patterns
  - Stateless service design
  - System integration in complex enterprise environments
  - Understanding of migration strategies and backward compatibility


Development & Delivery
• Git, CI/CD tools (Jenkins or similar)
• Agile/Scrum methodologies
• Linux/Unix environments

Nice-to-Have Skills Description:

Business
• Knowledge of capital markets and financial risk management (market and/or credit risk)
• Forex Transactions would be an asset
Technical
• AWS
• Cucumber

Who We Are 
 

At Digital Shelf by NIQ, we’re passionate about technological innovation and excellence in cybersecurity. Our cutting-edge solutions enable us to scrape data for 12 billion products and manage over 20 billion data points. In a market where anti‑bot technologies represent a $10B industry in constant evolution and consolidation, our dedicated teams tackle real‑world challenges with precision and creativity. 
 

What You’ll Do 
 

• Reverse Engineering & Decompilation: 
  Analyze web and mobile applications (APK/IPA) to uncover hidden mechanisms. Disassemble code to understand its inner workings, with a focus on cryptographic functions that secure our systems. 
• Overcoming Anti‑Bot Mechanisms: 
  Evaluate and bypass advanced security protocols such as TLS, HTTP/2, HTTP/3, WebSockets, DoH, and session management. Identify vulnerabilities to enhance our data extraction methods. 
• Developing Custom Tools: 
  Build robust Python scripts and frameworks that automate bypass procedures and dynamically adjust security measures, whether by modifying TLS stacks or patching JavaScript on the fly. 
• Implementing Stealthy Scraping Techniques: 
  Engineer sophisticated methods such as browser patching, headless browser evasion, proxy tunneling, and human‑behavior emulation to keep our operations discreet. 
• Continuous Innovation: 
  Regularly test, disrupt, and improve our tools to stay ahead of ever‑evolving defenses. 

Your Profile 
 

• P45510n4t3 C0d3 W4rr10r: 
  You thrive on pushing systems to their limits while upholding the highest ethical standards. R3v3rs3 3ng1n33r1ng isn’t just a skill it’s your creative playground. 
• R3v3rs3 3ng1n33r1ng Expertise: 
  Whether using tools like IDA Pro, Ghidra, or your own custom-built solutions, you excel at dissecting both binary and web code to uncover core functionalities. 
• W3b & N3tw0rk Pr0t0c0l Savant: 
  You possess deep expertise in pr0t0c0ls such as TLS, HTTP/2, WebSockets, DoH, and more, leveraging that knowledge to find innovative solutions. 
• Advanced Python Developer: 
  Your coding abilities go far beyond basic scripting. We're looking for a coder, someone who can design and implement robust, efficient solutions for complex challenges. 
• Collaborative Innovator: 
  While you excel as an independent problem-solver, you also thrive in a dynamic team environment that values open communication and continuous learning. 

How to Apply 
 

If you’re a dedicated code warrior with a passion for dissecting and rebuilding intricate systems and you consistently deliver high‑quality, efficient code, send us your resume.

What we offer

Direct contract with the USA
Flexible work hours and remote work

20 business days of paid vacation
Flexible days off

Maternity/Paternity leaves

Medical insurance 

Join Digital Shelf by NIQ and help us reshape the digital frontier. 

Job Description

You’ll be joining a team that delivers high-quality U.S. e-commerce data. With over 16 years of experience, we know our craft, but we’re always evolving. In this role, you’ll use your analytical skills to make sure our clients get accurate, reliable data. You’ll also get hands-on experience with our proprietary technology (and have a mentor to guide you). Plus, you’ll have the chance to help us push forward with new initiatives and improvements. If you enjoy solving puzzles, you’ll fit right in — logical and analytical thinking will help you tackle complex tasks, spot patterns and uncover insights. You’ll be learning constantly, so curiosity and a sense of ownership will be key to your success.

What You’ll Be Doing

Data Extraction

• Build data extractors to parse e-receipts using NielsenIQ’s proprietary markup language and RegEx.
• Debug and fine-tune templates to make sure they’re accurate, then validate your work with SQL and BI tools.
• Keep documentation clear and communicate effectively with tech teams and client-facing teams.
• Adapt extraction logic as data formats and business needs change.
• Stay up-to-date with our internal processes and tools.

Data Quality & Analysis

• Run thorough checks to ensure data is complete, consistent and is parsed correctly.
• Investigate any anomalies specific to U.S. retail data.
• Write and optimize SQL queries and Databricks notebooks for large-scale analysis.
• Create reports for client-facing teams.

Process Improvement

• Spot opportunities for automation and help improve our processes and tools.
• Lead or support strategic projects, like UATs, new processes onboarding, etc.
• Work closely with developers, analysts and client-facing teams to design solutions together.
• Keep operational and project documentation up to date.

What We’re Looking For

• 1–2 years of experience in data operations, analytics or tech-related roles.
• Solid SQL skills — you should be comfortable with joins, subqueries and CTEs.
• A logical, analytical mindset to tackle complex tasks and spot patterns in data.
• Great communication skills and attention to detail (crucial when working with data that people rely on to make decisions).
• Fluency in English.

Nice to Have

• Knowledge of e-commerce data and industry trends.
• Exposure to BI tools like Tableau, Power BI, etc.
• Familiarity with analytical platforms like Snowflake or Databricks.
• Previous experience in QA or data validation.
• Experience working in agile environments and understanding basic software development processes.

As a team member, you will have access to:

• Flexible work hours and remote work
• 20 business days of paid vacation
• Flexible days off
• Maternity/Paternity leaves
• Medical insurance (after probation)
• Professional and career development.
• Freedom of creativity and initiative. As Grace Hopper said, “It’s easier to ask for forgiveness than to get permission”. We infinitely value aspiration and initiative. Most of our technologies, processes, and departments appeared precisely because of those.

Level: Senior Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours:EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

ABOUT THE CLIENT

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

ABOUT THE ROLE

We are looking for a Senior SDET to lead the design of automated test frameworks and testing strategy for a large-scale distributed data platform. You will own the quality of the query engine, connectivity layer, and backend services end-to-end — from framework architecture through CI/CD infrastructure across all major clouds — and mentor middle engineers on the team.

This is a data-heavy, backend-focused role. We are not looking for web/UI QA engineers — the work centers on validating distributed query execution, data correctness at scale, connectivity drivers, and backend microservices.

RESPONSIBILITIES

• Architect, design, and evolve automated test frameworks in Python / pytest for backend services, REST APIs, and distributed data components.
• Define testing strategy for new features and platform components — coverage, risk assessment, and quality gates.
• Own end-to-end, integration, performance, and regression testing covering SQL query execution, data correctness at scale, and platform APIs.
• Lead performance and load testing efforts with JMeter, including workloads over JDBC / ODBC / Arrow Flightdrivers.
• Design and validate large-scale data testing scenarios — query plans, result correctness across heterogeneous data sources, metadata consistency, and behavior under high concurrency.
• Own CI/CD test pipelines in Jenkins — architect, maintain, and continuously improve.
• Provision and manage test environments in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker; drive automation and reproducibility.
• Investigate complex, cross-layer failures and drive root-cause analysis with engineering.
• Mentor middle SDETs, review test designs, and set quality standards across the team.
• Partner with US-based development leads on shift-left practices, testability, and release readiness.

REQUIRED QUALIFICATIONS

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Python, including pytest, with deep understanding of OOP, software design principles, and test framework architecture.
• SQL & Data: Advanced SQL skills and strong understanding of relational and analytical data systems, including query execution internals.
• Data-intensive testing experience: Demonstrated experience testing data-intensive systems — query engines, ETL/ELT pipelines, streaming platforms, or analytical databases. Candidates with only web/UI QA backgrounds are not a fit.
• Testing experience: 5+ years in backend/system test automation, with demonstrated ownership of test strategy and infrastructure.
• CI/CD & DevOps: Solid experience architecting and maintaining Jenkins pipelines and test environments.
• Containers & Orchestration: Strong working knowledge of Docker and Kubernetes (running workloads, debugging pods, deploying complex environments).
• Cloud: Hands-on experience with at least one major cloud (GCP, AWS, or Azure); exposure to more than one is a strong plus.
• Version Control: Confident with Git / GitHub workflows and code review practices.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.
• Leadership: Prior experience mentoring engineers, defining test strategy, or leading a QA/SDET function.

DESIRED SKILLS

• Deep experience testing REST APIs and backend microservices at scale.
• Hands-on with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines(e.g., Presto, Trino, or similar).
• Strong understanding of modern data lakehouse concepts, open table formats (Apache Iceberg), and data warehousing.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Performance testing with JMeter or comparable load-testing tools at production scale.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Deep understanding of query plan generation, query acceleration / materializations, and metadata integrity in distributed data systems.
• Prior experience leading a QA/SDET function in a data-platform or database engineering environment.
• Please note: We can consider only candidates currently residing in the EU, EEA, or the UK.

Level: Middle Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours:EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

ABOUT THE CLIENT

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

ABOUT THE ROLE

We are looking for a Middle-level SDET to design and maintain automated tests for a large-scale distributed data platform. You will validate the correctness, performance, and reliability of the query engine, connectivity layer, and backend services across all major clouds.

This is a data-heavy, backend-focused role. We are not looking for web/UI QA engineers — the work centers on validating distributed query execution, data correctness at scale, connectivity drivers, and backend microservices.

RESPONSIBILITIES

• Develop and maintain automated tests in Python / pytest for backend services, REST APIs, and distributed data components.
• Write end-to-end, integration, and regression tests covering SQL query execution, data correctness, and platform APIs.
• Support performance and load testing with JMeter, including workloads over JDBC / ODBC / Arrow Flightdrivers.
• Validate data-intensive scenarios — query plans, result correctness across data sources, metadata consistency, and behavior under concurrency.
• Contribute to CI/CD test pipelines in Jenkins — configure, maintain, and troubleshoot.
• Provision and manage test environments in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker.
• Investigate failures across the stack — query engine, distributed services, drivers, infrastructure — and drive them to resolution with engineering.
• Collaborate with US-based developers on testability and quality gates.

REQUIRED QUALIFICATIONS

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Python, including pytest, with a solid grasp of OOP and software design principles.
• SQL & Data: Strong SQL skills and solid understanding of how relational and analytical data systems work.
• Data-intensive testing experience: Hands-on experience testing data-intensive systems — query engines, ETL/ELT pipelines, streaming platforms, or analytical databases. Candidates with only web/UI QA backgrounds are not a fit.
• Testing experience: 3+ years in backend/system test automation or SDET roles.
• CI/CD & DevOps basics: Practical experience with Jenkins pipelines and deploying/maintaining test environments.
• Containers: Working knowledge of Docker and basic Kubernetes (running workloads, debugging pods, kubectl fluency).
• Cloud: Comfortable operating in at least one major cloud (GCP, AWS, or Azure).
• Version Control: Confident with Git / GitHub workflows.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.

DESIRED SKILLS

• Experience testing REST APIs and backend microservices at scale.
• Familiarity with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines(e.g., Presto, Trino, or similar).
• Understanding of modern data lakehouse concepts, open table formats (Apache Iceberg), and data warehousing.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Performance testing with JMeter or comparable load-testing tools.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Understanding of query plan generation, query acceleration / materializations, and metadata integrity in distributed data systems.
• Please note: We can consider only candidates currently residing in the EU, EEA, or the UK

Level: Middle Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours:EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

ABOUT THE CLIENT

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

ABOUT THE ROLE

We are looking for a Middle-level Software Engineer to work on the core query engine of a large-scale distributed data platform. You will develop features across query planning, optimization, and execution, contribute to performance-critical components, and help evolve the platform's ability to process massive analytical workloads across heterogeneous data sources.

This is a systems-level, backend engineering role focused on distributed data processing internals — not application development or CRUD services.

RESPONSIBILITIES

• Develop and maintain features across the query engine — planning, optimization, execution, and data access layers.
• Write high-quality, performance-conscious code in Java and/or C++.
• Work with SQL semantics, query plans, and execution operators over large-scale distributed data.
• Integrate with columnar formats, open table formats, and connectivity drivers used across the platform.
• Contribute to CI/CD pipelines and automated testing — participate in build, test, and release workflows in Jenkins.
• Deploy and validate work in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker.
• Debug complex issues spanning query planning, distributed execution, memory management, and I/O.
• Collaborate closely with US-based engineering teams on design reviews, code reviews, and technical decisions.

REQUIRED QUALIFICATIONS

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Java or C++, with solid OOP and software design fundamentals. Candidates comfortable with both are especially valued.
• SQL & Data: Strong SQL skills and solid understanding of relational and analytical data systems, including query execution concepts.
• Data processing systems experience: Hands-on experience with data processing systems — query engines, distributed databases, ETL/ELT frameworks, or analytical platforms.
• Engineering experience: 3+ years in backend/systems software engineering.
• CI/CD & DevOps basics: Practical experience with Jenkins pipelines and modern development workflows.
• Containers: Working knowledge of Docker and basic Kubernetes (running workloads, debugging pods, kubectl fluency).
• Cloud: Comfortable operating in at least one major cloud (GCP, AWS, or Azure).
• Version Control: Confident with Git / GitHub workflows.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.

DESIRED SKILLS

• Experience with Apache Arrow (columnar in-memory format).
• Familiarity with Apache Calcite (SQL parsing, planning, optimization framework).
• Exposure to Gandiva or LLVM-based expression compilation.
• Experience with open table formats — Apache Iceberg, Delta Lake, or Hudi.
• Familiarity with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines(e.g., Presto, Trino, or similar).
• Understanding of query planning, optimization, and execution internals.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Experience with performance profiling and optimization of latency-sensitive systems.
• Please note: We can consider only candidates currently residing in the EU, EEA, or the UK.

Level: Senior Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours:EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

ABOUT THE CLIENT

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

ABOUT THE ROLE

We are looking for a Senior Software Engineer to design, build, and own significant components of the core query engine of a large-scale distributed data platform. You will lead work across query planning, optimization, and execution — driving architectural decisions, mentoring middle engineers, and pushing the platform's performance and scalability boundaries across all major clouds.

This is a systems-level, backend engineering role focused on distributed data processing internals — not application development or CRUD services.

RESPONSIBILITIES

• Architect, design, and implement significant components of the query engine — planner, optimizer, execution operators, memory management, and data access layers.
• Write and review high-quality, performance-critical code in Java and/or C++.
• Own end-to-end delivery of features from technical design through production rollout.
• Drive performance optimization work — profiling, benchmarking, and eliminating bottlenecks in latency- and throughput-sensitive paths.
• Integrate deeply with columnar formats, open table formats, and connectivity drivers.
• Mentor middle engineers, lead code reviews, and set technical standards for the team.
• Contribute to CI/CD architecture and quality processes across Jenkins, containerization, and multi-cloud deployment (GCP, AWS, Azure via Kubernetes / Docker).
• Debug complex, cross-layer issues spanning query planning, distributed execution, memory management, and I/O.
• Partner with US-based engineering leads on design reviews, architectural decisions, and roadmap execution.

REQUIRED QUALIFICATIONS

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Java or C++, with deep understanding of OOP, systems design, memory management, and concurrency. Candidates strong in both are especially valued.
• SQL & Data: Advanced SQL skills and strong understanding of query execution internals — planning, optimization, and operator implementation.
• Data processing systems experience: Demonstrated experience building or extending data processing systems — query engines, distributed databases, ETL/ELT frameworks, or analytical platforms.
• Engineering experience: 5+ years in backend/systems software engineering, with a track record of owning significant components.
• CI/CD & DevOps: Solid experience with Jenkins and modern engineering workflows.
• Containers & Orchestration: Strong working knowledge of Docker and Kubernetes.
• Cloud: Hands-on experience with at least one major cloud (GCP, AWS, or Azure); exposure to more than one is a strong plus.
• Version Control: Confident with Git / GitHub workflows and rigorous code review practices.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.
• Leadership: Prior experience mentoring engineers, leading technical designs, or owning components end-to-end.

DESIRED SKILLS

• Deep experience with Apache Arrow (columnar in-memory format).
• Hands-on experience with Apache Calcite (SQL parsing, planning, optimization framework).
• Experience with Gandiva or LLVM-based expression compilation and code generation.
• Experience with open table formats — Apache Iceberg, Delta Lake, or Hudi.
• Deep familiarity with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines (e.g., Presto, Trino, or similar).
• Deep understanding of query planning, optimization (cost-based, rule-based), and execution internals.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Track record of performance optimization at the systems level — profiling, vectorization, cache/memory-conscious design.
• Prior experience contributing to open-source data infrastructure projects.
• Please note: We can consider only candidates currently residing in the EU, EEA, or the UK

Description

Our client is the world’s #1 web data platform. Fortune 500 companies, academic institutions, and small businesses all rely on our solutions to retrieve crucial public web data in the most efficient, reliable, and flexible way, so they can research, monitor, analyze data, and make better decisions.

Requirements

• Basic knowledge of OOP and Functional programming;
• Good knowledge of JavaScript (ES6/7/8) and working with the browser DOM (searching elements, iterating, getting content);
• A basic understanding of Web scraping is a must;
• Web scraping experience in JS or Python would be a plus;
• Basic knowledge of Git;
• Intermediate English, including written and verbal communication skills;
• Ability to learn quickly and grow in the technical area;
• Analytical mind and problem-solving aptitude.

Job responsibilities

• Participate in various activities as required for project success: discussing approaches, possible technology solutions, investigations, and development;
• Adding new functionality to existing systems, while constantly improving usability, quality, and performance;
• Contribute to project deliverables, mood, and success.

This is a fantastic opportunity to join a fast-growing company at the heart of the digital revolution. Our software product is revolutionising manufacturing through automation. We are trusted by global brands and work across sectors (mobility, consumer goods, machinery etc).

We have a talented and ambitious team. We value integrity and are passionate about our mission to revolutionise advanced manufacturing.

This is your opportunity to:

• Be part of a fast-growing software product company in advanced manufacturing.
• Learn and fulfil your potential in an open, knowledge-driven culture.
• Share in our ambitious vision and make a meaningful difference towards autonomous manufacturing.

Responsibilities:

• Development of new features and new parts of the app.
• Work in a cross-functional Scrum team alongside Frontend and QA Engineers.
• Maintaining, improving and extending existing functionality.
• Сonstantly improving code organization and evolving application design.

You will be joining a well-versed team if you have:

• Minimum of five years of experience in Node.JS development.
• Minimum of two years of React.JS experience.
• Minimum of two years of team leadership experience.
• Bachelor’s Degree or Master’s Degree in Computer Science.
• Proven ability to mentor and develop team members.
• Experience with Sequelize, PostgreSQL, database design, microservices.
• AWS (EC2, Lambda, SNS, and others).
• Knowledge of web application security best practices.
• Excellent analytical and problem-solving skills to address challenges and find solutions.
• HTML/CSS; Pre/post - processors, methodologies.
• Experience with unit, integration, and end-to-end testing methodologies.
• Understanding of DevOps principles and tools (CI/CD, containerization).
• Git branching strategies.
• Scrum Agile principles and processes.
• English level - Intermediate and higher. 

What we offer:

• Competitive salary.
• Work in a product company (HQ in London, clients in North America/Europe).
• Modern technology stack.
• 20 working days of vacation.
• 8 working days of sick-leaves.
• Long-term & safe employment with paid holidays and paid sick leaves.

We are based in Kyiv, Ukraine, with a global client footprint spanning North America, Europe, and Asia, Twin Win Games LLC is a professional development studio specializing in the production of high-quality games and entertainment apps of varying complexity and design requirements across different platforms and markets.

We are looking for a Middle Business Development Manager who can independently manage outbound business development activities: research relevant prospects, qualify leads, write personalized outreach, run multi-step sequences, lead discovery calls, handle objections, and maintain a structured sales pipeline in HubSpot.
The ideal candidate should be able to work with international clients, understand B2B sales logic, stay organized across multiple conversations, and move opportunities forward without constant reminders.

Requirements:

- 2+ years of experience in B2B sales, business development, or outbound sales.
- Experience working with international clients.
- Strong outbound experience: prospecting, cold outreach, LinkedIn/email sequences.
- Ability to independently manage a sales pipeline.
- Good understanding of ICP, lead qualification, and sales funnel logic.
- Ability to lead discovery calls and handle objections.
- Strong written and spoken English: Upper-Intermediate to Advanced.
- Experience with CRM systems, preferably HubSpot.
- Structured approach to follow-ups, CRM updates, and pipeline management.
- Resilience to rejection and long sales cycles.

Responsibilities:

Lead Research & Prospecting
- Research potential clients, markets, and companies relevant to our ICP.
- Identify key decision-makers and stakeholders.
- Build targeted prospect lists for outbound campaigns.
- Understand why a company may be relevant before reaching out.

Outreach & Lead Generation
- Write personalized outreach messages for email and LinkedIn.
- Build and manage multi-step outbound sequences.
- Adapt communication based on company, role, market, and potential business need.
- Understand basic deliverability and spam-compliance principles.

Sales Pipeline Management
- Manage the sales pipeline from first contact to deal progression.
- Qualify leads using practical sales frameworks such as BANT, SPIN, or MEDDIC.
- Track all activities, follow-ups, deal stages, and client context in HubSpot.
- Handle several active opportunities at the same time without losing quality.

Client Communication
- Lead discovery calls with potential clients.
- Ask clear questions to understand client needs, pain points, budget, timeline, and decision-making process.
- Present the company’s services clearly and relevantly.
- Handle objections in a calm and professional way.
- Communicate with middle management and, when needed, C-level contacts.

Internal Collaboration
- Work with PMs, Art Directors, and internal teams during estimation or project discussions.
- Share clear client context with the team.
- Escalate deal risks or blockers in time.
- Keep the Head of BD updated on important pipeline changes.

Would be a plus:

Experience in iGaming.
Experience in gaming, SaaS, outsourcing, or IT services.
Experience attending or preparing for industry events such as ICE, SBC, G2E, SiGMA.
Understanding of slot development, game production, art, animation, development, or QA outsourcing.
Experience working with BANT, SPIN, MEDDIC, or similar qualification frameworks.
Basic ability to analyze pipeline performance and conversion rates.
HubSpot reporting experience.

Work conditions

We take pride in offering a range of benefits and opportunities to our employees, which include but are not limited to:

— Flexible working hours and workplace, enabling our team members to achieve a healthy work-life balance.
— Paid vacation of 20 workdays per year; 5 workdays of sick leave per year.
— Unlimited day-offs for personal matters (unpaid).
— A personal development plan (English speaking club, skills training, and access to our Education office — an education hub with internal and external experts and mentorship programs.)
— Structured processes and tools — corporate Confluence, to ensure effective communication and collaboration within the company.
— An open-minded management style that fosters transparency and constant sharing of company strategy and plans.
— Performance-based reviews that recognize and reward the contributions of our team members.
— Stress management measures, including 1-1 meetings, transparent communication, and feedback culture.
— Corporate team-building events, marathons, and online challenges that promote teamwork and healthy competition.
— Family-friendly environment, where we celebrate important personal milestones, such as the birth of a child or wedding, with congratulatory gifts.

The client is looking for an experienced Senior Master Data Developer / Data Engineer to work in a complex enterprise environment.
The main focus of the position is the development and maintenance of enterprise-grade data pipelines, ETL/ELT processes, data integration and migration, as well as working with Master Data and Data Warehousing.
The candidate should have not only a classic Data Engineering background, but also a strong understanding of cloud architecture, networking, and data migration between VPC / hyperscaler environments.
The position requires independent work in a complex enterprise environment and collaboration with various technical and business teams.

Details:

• 4+ years of relevant experience
• English: B2+
• Full-time
• Long-term project
• Remote

Core Skills:

• Strong database and data warehousing expertise
• Hands-on ETL development experience
• Enterprise cloud networking knowledge
• Experience with data migration across VPCs and hyperscalers
• Python development skills
• Experience building and maintaining data pipelines

 Responsibilities:

• Design, develop, and maintain enterprise-grade data pipelines
• Build and optimize ETL and data integration solutions
• Support data warehousing and master data management initiatives
• Configure and maintain cloud-based data environments
• Enable secure data movement across VPCs and hyperscaler environments
• Collaborate with cross-functional teams to ensure data quality and scalability

We are looking for an experienced Android Developer to work on a project involving Android Enterprise, MDM and system-level functionality.
 

About the Project

The main goal is to develop two plugins for Headwind MDM:

1. A plugin for collecting information about mobile data usage by installed applications.
2. A FOTA (Firmware Over-The-Air) plugin for managing Android system updates.
    

Requirements

• Strong commercial experience with native Android development
• Strong knowledge of Kotlin / Java
• Experience with Android Enterprise
• Hands-on experience with Device Owner / Device Policy Manager (DPM)
• Understanding of MDM (Mobile Device Management)
• Experience developing platform-signed / privileged Android applications
• Experience with system-level Android functionality
• Good understanding of Android OS architecture
• English — B2+

Nice to Have

• Experience with FOTA / Android system updates
• Experience with AOSP
• Experience developing Android system applications or working close to the Android framework
   

Tech Stack

Kotlin, Java, Android, Android Enterprise, Device Owner, DPM, MDM, Platform-signed Apps, FOTA, AOSP, Headwind MDM