Jobs at Djinni

We are looking for an experienced Senior Data Scientist to join our team and help unlock the full value of data across our platform, products, and business operations. In this role, you will apply advanced analytics, machine learning, and statistical modeling to generate actionable insights, improve decision-making, and drive innovation across the organization.

Responsibilities

• Analyze large, complex datasets to uncover trends, patterns, and insights that support strategic business and product decisions.
• Build predictive models to forecast business outcomes, improve operational efficiency, and support decision-making across multiple functions.
• Design and implement feature engineering techniques to improve machine learning model performance and accuracy.
• Partner with cross-functional teams including product, engineering, operations, and business stakeholders to identify opportunities and translate them into scalable data science solutions.
• Clean, preprocess, and structure data from multiple sources to ensure high-quality inputs for analysis and modeling.
• Develop, test, and deploy machine learning models for use cases such as classification, regression, clustering, recommendation systems, and forecasting.
• Evaluate and optimize model performance using appropriate statistical and machine learning metrics.
• Create dashboards, reports, and visualizations that clearly communicate findings and recommendations to technical and non-technical audiences.
• Automate recurring analysis, reporting, and model workflows to improve efficiency and consistency.
• Monitor production models and continuously improve performance, reliability, and business impact over time.
• Stay current with the latest advancements in data science, machine learning, and AI, and apply relevant innovations to PredictSpring’s platform and operations.

Requirements

• Excellent communication skills, including fluent verbal English, with the ability to explain complex concepts to non-technical stakeholders and collaborate effectively across teams.
• Bachelor’s or Master’s degree in Data Science, Computer Science, Statistics, Mathematics, or a related field.
• Proven experience as a Data Scientist, with a strong background in machine learning, statistical analysis, and predictive modeling.
• Strong programming skills in Python preferred, or similar languages such as R, with hands-on experience using libraries such as Pandas, NumPy, scikit-learn, TensorFlow, or PyTorch.
• Expertise in building and deploying machine learning models for classification, regression, time-series forecasting, recommendation systems, and related applications.
• Strong experience with data wrangling, feature engineering, and working with structured and unstructured datasets.
• Proficiency in SQL for querying, transforming, and analyzing structured data.
• Experience with cloud platforms such as AWS, Azure, or Google Cloud for model deployment and data workflows.
• Experience with data visualization tools such as Power BI, Tableau, or Python visualization libraries.
• Strong analytical thinking, problem-solving ability, and a passion for applying data science to real-world business challenges.

Preferred Qualifications

• Familiarity with big data and distributed processing tools such as Apache Spark, Hadoop, or Databricks.
• Experience with deep learning frameworks such as TensorFlow, Keras, or PyTorch.
• Experience with natural language processing techniques such as text classification, sentiment analysis, or large language model applications.
• Strong foundation in statistical analysis, experimentation, and hypothesis testing.
• Experience collaborating with or supporting data engineering teams in building scalable data pipelines.
• Familiarity with version control tools such as Git.
• Strong business acumen and the ability to align technical solutions with business goals.
• Experience in retail, e-commerce, omni-channel commerce, or POS technology is a strong plus.

Why PredictSpring?

• Join a market-leading company shaping the future of omni-channel retail and modern POS.
• Work on high-impact challenges at the intersection of commerce, data, and customer experience.
• Collaborate with a talented global team in a flexible remote work environment.
• Enjoy opportunities for growth, learning, and professional development.
• Contribute to products used by some of the world’s most recognized retail and lifestyle brands.
• Be part of an innovative, collaborative, and data-driven culture focused on delivering measurable business value.

We are strengthening our team and looking for a Junior Product Manager who will drive valuable features and contribute to the launch of new products.

About the product: We develop and scale multiple social networking products that connect people worldwide. Our portfolio includes apps for both iOS and Android, each designed to enhance user experience, optimize engagement, and explore new business models. As a Junior Product Manager, you will join a product team that works across different products, sharing expertise and collaborating on key initiatives. This is an opportunity to shape innovative features, drive product growth, and contribute to the launch of new solutions in a fast-paced environment.

In this role, you will

• Conduct market research and competitor analysis to identify trends and opportunities
• Define and write detailed product requirements (PRDs, user stories, acceptance criteria)
• Analyze user behavior and product funnels to find areas for improvement
• Generate and prioritize product hypotheses, testing them through experiments
• Work with product analytics tools to track key metrics and suggest improvements
• Collaborate with designers, developers, and QA teams to ensure smooth implementation of new features
• Run A/B tests, analyze results, and make data-driven decisions
• Stay up to date with industry best practices and propose innovative solutions
   

It’s all about you

• 1+ years of experience in product management with mobile B2C apps
• Strong analytical skills and experience in problem-solving through data analysis
• Experience in writing clear and structured documentation (PRDs, user stories)
• Hands-on experience with A/B testing, hypothesis validation, and user research
• Familiarity with product analytics tools (Tableau, Grafana, BQ or similar)
• Basic understanding of UX principles and the ability to identify user pain points
• Strong communication skills and ability to work cross-functionally in a team environment
• Familiarity with agile development processes and backlog management
• Proactive, results-driven mindset with a strong sense of ownership
• Upper-Intermediate (B2) English or higher
   

Would be a plus

• Experience working with product analytics in-depth

What we offer

Care and support: 

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity recovery support allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
   

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools
   

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events

Hiring process

• Intro call
• Test Task
• Technical Interview
• Final Interview (optional) 
• Reference check
• Offer

About the Work:

Within the RFA initiative, we develop ProjectUA — a national IT platform for the Government of Ukraine that enables planning, monitoring and evaluation of policy implementation. ProjectUA consolidates government priorities, delivers real-time progress monitoring, and supports transparent, data-driven decision-making. 

Primary tasks are: 
● Design, develop, and maintain high-quality backend solutions in PHP
● Review and improve the existing codebase with focus on security vulnerabilities and performance bottlenecks
● Write and maintain unit and integration tests
● Prepare and maintain clear technical documentation

Formal Eligibility Requirements (Mandatory):

Please note: due to project, contracting, and donor requirements, candidates must meet all of the criteria below in order to be considered:

● Ukrainian citizenship (mandatory)
● Registered Ukrainian Private Entrepreneur of the 3d group (consultancy services) or readiness to register as Private Entrepreneur prior to contract signing
● Legal ability to provide consultancy services under Ukrainian law
● Availability for full-time engagement (Monday–Friday)

Required Qualifications: Experience:
● 4+ years of professional experience with PHP
● Strong knowledge of PHP 7.4 and PHP 8.x
● Proven production experience with Yii2
● Solid knowledge of MySQL, including schema design and query optimization (EXPLAIN, indexes)
● Strong background in API design (REST/JSON) and backend architecture
● Hands-on experience with performance measurement and optimization: profiling code execution, analyzing bottlenecks (slow requests/queries), improving runtime and memory usage
● Practical experience with debugging and troubleshooting: working with logs, reproducing issues, root-cause analysis, and delivering reliable fixes
● Hands-on experience writing unit and integration tests using Codeception
● Good understanding of OOP, SOLID, and clean code practices

What We Value Most:
● Engineering mindset focused on long-term product health, not short-term hacks
● Personal responsibility for correctness, security, and reliability
● Proactive and independent approach: ability to propose improvements and drive them to completion

As a plus:
● Experience with Vue.js (and understanding how frontend integrates with APIs)
● Experience with Redis / caching
● Experience with Symfony and/or Laravel
● Experience with Docker/CI on a basic level
● Experience refactoring monoliths and improving performance/memory usage

Please note: Alinea International does not provide exemptions from mandatory military service requirements for consultants engaged under Private Entrepreneur (PE) contracts.

We're looking for a structured and proactive Operation Risk Manager who can bring clarity to uncertainty and build a practical risk management system from the ground up. 

You'll work across teams to identify risks, set up processes, track key metrics, and ensure risks are managed before they impact the business. 

If you can make risk management a real working system (not just documentation) - this role is for you. 

WHAT YOU’LL DO:

• Build and maintain a company-wide risk management framework.
• Identify, assess, and document key risks across teams and processes.
• Maintain a risk register and ensure it is up to date and actionable.
• Define and track risk metrics (KRIs) and provide regular reporting.
• Organize and run risk committee meetings (agenda, follow-ups, decisions).
• Drive implementation of risk mitigation actions across teams.
• Develop and improve risk management policies, standards, and methodology.
• Work with teams to embed risk thinking into daily operations.
• Monitor effectiveness of risk controls and suggest improvements.

WHAT WE EXPECT FROM YOU:

• At least 2 - 3 years of experience in Risk Management, Operations, Audit, or similar roles in a company with 200+ people.
• Hands-on experience building and implementing risk management processes and frameworks.
• Strong understanding of risk types (operational, financial, compliance) and how to manage them.
• Ability to identify, assess, and prioritize risks in a structured way.
• Experience setting up and tracking risk metrics and reporting systems.
• Strong collaboration skills - able to work across teams and align stakeholders.
• Analytical mindset - able to turn complex situations into clear risk insights and actions.

YOUR JOURNEY WITH US:

• Step 1: Pre-screen.
• Step 2: Technical Interview.
• Step 3: Final interview.
• Step 4: Reference check.
• Step 5: Job Offer!

WHAT WE OFFER

• 28 business days of paid off. 
• Flexible hours and the possibility to work remotely. 
• Medical insurance and mental health care. 
• Compensation for courses, trainings.
• English classes and speaking clubs. 
• Internal library, educational events. 
• Outstanding corporate parties, teambuildings.

N-iX is looking for an experienced Senior Java Engineer who goes beyond standard CRUD APIs and lives in the world of information retrieval.

Our customer is a Fortune 500 company. As a leading business-to-business organization, more than 3.2 million customers rely on its products in categories such as safety, material handling, and metalworking, along with services like inventory management and technical support. ​

In this role, you will act as the bridge between our core Java application architecture and our specialized search infrastructure. You will be responsible for the entire search lifecycle: from designing how data is ingested and indexed, to building the Java APIs that query that data, and crucially, tuning the relevancy algorithms that ensure our users find exactly what they are looking for, instantly. The ideal candidate has deep roots in the Apache Solr ecosystem but is also ready to embrace modern cloud-native search via AWS OpenSearch. Whether you are maintaining critical legacy Solr clusters or architecting new solutions on AWS, your goal is to make data findable, fast, and relevant.

Technology stack: Java/Spring Boot, Apache Solr (Legacy/Core), AWS OpenSearch (Modern/Growth), SQL DB, Kafka 

Responsibilities:

• Design, develop, and maintain high-performance backend Java services (primarily Spring Boot) that integrate with search engines.
• Build complex search features for the frontend, including faceted navigation (filtering), multi-tenant searching, real-time autocomplete/typeahead, and spell-checking suggestions.
• Utilize Java client libraries (such as Solr or AWS SDKs) to construct efficient, programmatic queries.
• Take ownership of the search schema design, deciding how complex data structures should be analyzed, tokenized, and stored for optimal retrieval.
• Build robust ETL pipelines in Java (potentially using Kafka or other messaging systems) to synchronize data from primary SQL databases into the search indices in near real-time.
• Configure analyzers, stemmers, and tokenizers to handle nuances in human language.
• Diagnose slow queries, analyze search logs, and optimize both Java application code and search engine configurations for low-latency performance.
• Maintain and optimize existing on-premise or cloud-hosted Apache Solr installations.
• Play a key role in designing hybrid strategies or migration paths from legacy Solr systems to managed AWS OpenSearch environments.

Requirements: 

• 5+ years of professional experience in backend software development using modern Java (Java 8+, Spring Boot ecosystem).
• Strong, demonstrable experience with Search Technologies. This means either:
  • Hands-on production experience configuring, managing, and developing against Apache Solr (understanding schema.xml, solrconfig.xml, Zookeeper integration).
  • OR deep foundational knowledge of Lucene-based search concepts (inverted indices, analysis chains, TF-IDF/BM25 scoring logic) with the ability to quickly apply that to Solr.
• Hands-on experience with AWS OpenSearch (or Elasticsearch) in a managed cloud environment.
• Experience with data modeling in relational databases (PostgreSQL, MySQL, Oracle).
• Strong understanding of RESTful API design principles.
• Preferred Qualifications:
  • Experience architecting zero-downtime migrations from self-hosted Solr to managed cloud search services.
  • Experience with event-driven architecture and streaming tools like Apache Kafka for real-time indexing.
  • Familiarity with containerization (Docker, Kubernetes) and CI/CD pipelines like Jenkins or GitLab CI.

We offer*:

• Flexible working format - remote, office-based or flexible
• 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

At SPD Technology, we bring together a team of like-minded people who are driven by the desire to bring value through their work, united in their commitment to high performance and delivering custom, cutting-edge tech solutions that drive clients’ growth. We empower our people with a culture of excellence and enable them with the opportunity to uphold their accountability to contribute on each level. We value humanity and collaboration, encourage professional and personal growth, and foster a supportive and flexible work environment where everyone’s contribution is welcomed.

Now we are looking for a Software Development Engineer (MLOps) to join us as part of our team.

About the role

As a Senior ML Operations Engineer, you will support teams building and deploying AI-driven solutions, helping them overcome common challenges in the ML development, deployment, and support lifecycle. This role offers autonomy in decision-making, encouraging a proactive approach to solving complex issues and finding optimal solutions for scalable systems.

About the project

PitchBook — a platform for investment professionals. Our software provides access to data and the analytical tools to get answers fast and discover promising opportunities. Uncovers actionable insights and trends hidden within the financial data of more than three million companies. Users all over the world include large corporations, start-ups, venture capital and private equity firms, investment banks, and many others. Features of PitchBook: Advanced search / Discovery & insights / Company profiles / Workflow & efficiency / Financials and many more.

Team composition

1 Engineering Manager, 4 Senior ML Ops Engineers

Work Environment

The role offers a flexible work schedule, allowing you to adapt your working hours with the requirement to attend all team meetings. The team follows a Scrum-based Agile methodology.

As a qualified expert, You will

• Serve as a force multiplier for development teams by creating golden paths that remove roadblocks and improve ideation and innovation.
• Collaborate with other engineers, product managers, and internal stakeholders in an Agile environment.
• Provide mentorship, technical guidance, and perform code reviews for team members.
• Design and deliver on projects end-to-end with little to no guidance.
• Provide support to teams building and deploying AI applications by addressing common pain points in the MLDLC.
• Learn constantly and be passionate about discovering new tools, technologies, libraries, and frameworks (commercial and open source), that can be leveraged to improve PitchBook’s AI capabilities.
• Support the vision and values of the company through role modeling and encouraging desired behaviors.
• Participate in various cross-functional company initiatives and projects as requested.
• Contribute to strategic planning in a way that ensures the team is building exceptional products that bring real business value.
• Evaluate frameworks, vendors, and tools that can be used to optimize processes and costs with minimal guidance.

We’re looking for you if you have

• Degree in Computer Science, Information Systems, Machine Learning, or a similar field preferred (or equivalent practical experience).
• 5+ years of hands-on software development experience with Python (Java experience with strong Python proficiency also considered).
• 4+ years of experience designing and building distributed software systems and architectures.
• 3+ years of hands-on experience deploying and operating Machine Learning services in production.
• Experience supporting ML lifecycle operations including post-deployment monitoring and maintenance.
• Experience in cloud-native stack, with a practical understanding of containerization technologies such as Kubernetes and Docker.
• Demonstrated experience with SQL and NoSQL database design and implementation.
• Ability to decompose complex problems into iterative, well-defined solutions.
• Strong problem-solving abilities with focus on building scalable, efficient, and maintainable systems.
• Strong communication and collaboration skills, with the ability to engage effectively with internal customers across various cultures and regions.
• Ability to be a team player who can also work independently.
• Experience working across multiple development teams is a plus.

Desired Skills

• Experience with cloud platforms (AWS, Google Cloud Platform, or Azure).
• Proficiency in GitOps practices and CI/CD pipeline development and management.
• Observability and monitoring: Integration experience with observability tools (Prometheus, Grafana) and building instrumented, production-ready systems.
• LLM Infrastructure: Experience provisioning and managing Large Language Models through managed services (Azure OpenAI, Google Vertex AI, Amazon Bedrock).
• LLM Tooling: Hands-on experience with LLM gateways (LiteLLM) and agentic frameworks (LangGraph, LangSmith, or similar).
• Vector Systems: Practical experience with vector embedding models and vector databases (Pinecone, Weaviate, Milvus, pgvector).
• RAG Systems: Experience building Retrieval-Augmented Generation systems and evaluating both retrieval quality and generation performance.
• Cloud-native experience with services like Amazon SageMaker, Google Vertex AI, or Azure ML
• Familiarity with ML frameworks and tools: PyTorch, TensorFlow, scikit-learn
• Experience with data infrastructure: Redis, Elasticsearch, Apache Kafka.
• ML experiment tracking and model management: Weights & Biases, MLflow, KubeFlow.
• API development with FastAPI or similar frameworks.
• Java programming experience is a plus.

Interview Process

1. Pre-Screening with the recruiter
2. Tech Interview(ML Fundamentals, Software Engineering) + Live Coding (up to 1,5 hours)
3. ML System Design Interview (up to 60 min)
4. Interview with Engineering Manager (60 min)
5. Final Client Interview (60 min)

Evoplay is a Ukrainian product IT company that complete B2B solutions for the online gaming industry.

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 and cloud), 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.

This is a product company that supplies ultra-low latency financial systems to tier-1 banks in the EU and the US. The company is certified by more than 100 Forex trading platforms, accounting for over 95% of currency liquidity, and provides a comprehensive solution with a single API for both Maker and Taker. These systems allow the bank to serve a multitude of algorithmic traders, providing market access and trading, risk management, price matching, liquidity aggregation, etc.
The company has created a product that allows international companies and banks to conduct instant transactions on global currency exchanges with minimal time delay using the company's low-latency gateway. This solution is an advantage for them to be ahead of their competitors by fractions of a millisecond.

Two rounds of interviews are planned, including with the company's CEO.

The team consists of 17 C++ developers.
 

Required experience in server development on C++ (Linux), multithreading, experience with low-latency systems on Linux, spoken English.

Will be a plus: with High-load systems, experience in FinTech projects.

We are looking for a highly creative, data-driven, and experienced Middle/Senior SMM Manager to join our team. If you live and breathe social media trends, know how to turn views into leads, and have a proven track record of scaling businesses through thumb-stopping content, we want you!

Key Responsibilities:

• Trendjacking & Strategy: Constantly monitor, analyze, and instantly adapt to the latest social media trends, algorithm updates, and viral hooks to keep our brand ahead of the competition.
• Creative Content Creation: Conceptualize, script, shoot (direction), and edit engaging, highly creative short-form video content (Reels, TikToks, Shorts) that drives high engagement and virality.
• Lead Generation: Develop and execute SMM strategies focused on measurable business growth, customer acquisition, and high-quality lead generation.
• Cross-Platform Management: Plan, publish, and optimize content tailored specifically for Instagram, TikTok, YouTube, and LinkedIn.
• Analytics & Optimization: Track KPIs, analyze campaign performance, and regularly report on ROI, adjusting strategies based on data.

Requirements (Must-Haves):

• Experience: 5+ years of proven experience in social media marketing and business promotion.
• Creativity & Trend Mastery: A strong creative mindset with an obsession for social media. You must have a sharp eye for aesthetics and a proven ability to spot and implement the latest SMM trends before they go mainstream.
• Platform Expertise: Deep understanding of algorithms, features, and lead-generation tools on Instagram, TikTok, YouTube, and LinkedIn.
• Language: Fluent / Native-level English (both written and spoken). You must be able to write copy and create content for an English-speaking audience flawlessly.
• Software & Design Skills: Proficiency in video editing software (e.g., CapCut, Premiere Pro), Adobe Photoshop, and Canva for creating high-quality visual assets.
• Proven Track Record: A portfolio showcasing proven results (e.g., case studies with specific metrics: lead growth, revenue generated, or significant account scaling).

Nice-to-Haves (Advantages):

• Experience in promoting Medical, Health, or Wellness accounts (clinics, doctors, healthtech, or medical services) is highly desired.

What We Offer:

• 100% Remote: Work from anywhere with full support.
• Work-Life Balance: 28 days of paid annual leave.
• Transparency: A clear incentive system and well-defined KPIs.
• Stability: The security of a profitable, large-scale European company.
• Impact: The chance to work on socially significant, innovative international projects.
• Freedom: Creative freedom and a supportive team environment.

How to Apply:

Please send your CV and a link to your portfolio.

Important: Applications without a portfolio or case studies demonstrating lead generation, creativity, and video content examples will not be considered.

We’re searching for a Middle BI Developer to join a blockchain company. This is a long-term opportunity

Responsibilities

• Build and maintain dashboards and reporting solutions in Power BI.
• Design and develop end-to-end analytics across multiple data sources.
• Integrate and combine data from GA4, HubSpot, Search Console, ERP, CRM, and internal systems.
• Configure and maintain data connections, connectors, and data flows.
• Develop and optimize SQL queries, data models, and reporting datasets.
• Validate data quality and ensure consistency across reports.
• Work closely with stakeholders to define KPIs and reporting requirements.

• Support the evolution of the company's BI and analytics infrastructure.

   

Requirements

• 2+ years of experience as a BI Developer, BI Analyst, Analytics Engineer, or Data Analyst with strong BI focus.
• SQL skills (joins, CTEs, window functions, query optimization).
• Strong hands-on experience with Power BI.
• Experience building dashboards and reporting solutions from scratch.
• Experience integrating data from multiple business systems (CRM, ERP, GA4, marketing platforms, internal databases, APIs).
• Understanding of ETL/ELT processes and data warehousing concepts.
• Experience configuring connectors and onboarding new data sources.
• Understanding of REST APIs and data exchange mechanisms.

• Strong analytical and problem-solving skills.

   

Nice to Have

• Experience with HubSpot, GA4, Google Search Console.
• Experience with Python for automation or data extraction.
• Experience with BigQuery, Snowflake, PostgreSQL, or similar databases.

• Experience in SaaS, FinTech, Blockchain, or B2B products.

   

What We Offer

• Remote-first environment.
• Opportunity to work on a growing blockchain product.
• High level of ownership and impact.
• Competitive compensation.
• Professional growth and career development.

Cosmolot is a Ukrainian product IT company that creates and develops an online digital entertainment platform. We build technology-driven solutions with a strong focus on security, transparency, and user comfort.

As a Data Analyst, you will analyze payment and fraud-related data, identify suspicious patterns and risks, and support fraud prevention and payment optimization initiatives through data-driven insights and reporting.

Requirements

• 4+ years of experience as a Payment Analyst, Fraud Analyst, Product/Data Analyst, Risk Analyst, or similar role
• Strong practical knowledge of SQL: CTEs, window functions, aggregations, joins, query optimization
• Experience analyzing payment transactions, payment funnels, success rates, declines, errors and fraud-related metrics
• Practical experience with Power BI
• Strong Excel skills
• Ability to work with large datasets and combine data from multiple sources
• Strong analytical thinking and attention to detail
• Understanding of key payment and fraud metrics (AR, SR) 
• Strong communication skills and ability to clearly present insights to business stakeholders
• Ability to work independently in a dynamic environment

Your Responsibilities

• Analyze payment performance, fraud prevention metrics, and player transaction behavior to support business decisions 
• Investigate suspicious activity, fraud patterns, bonus abuse, multi-accounting, payment manipulation, and other abnormal user behaviors 
• Collaborate with business teams (Product, Payments, Risk & Fraud) on data requirements, analytical insights, fraud prevention, and payment optimization initiatives 
• Collect, prepare, validate, and combine data from multiple sources for analysis and reporting
• Build and maintain analytical reports and dashboards in Power BI for payment, fraud, and transaction monitoring

Nice to Have

• Experience in iGaming, fintech, payments, traffic analytics, or other high-risk industries
• Experience with PSPs, payment providers, aggregators, antifraud or risk management systems
• Knowledge of fraud detection, bonus abuse, or suspicious activity analysis
• Basic experience with Python for data analysis or automation
• Understanding of payment processes (routing, cascading, 3DS, BIN analysis, card, crypto, and alternative payments)

What We Offer

• Work in a strong team of professionals and genuinely supportive people
• Opportunities for professional growth and development
• Flexible working hours
• Medical insurance
• Sports expense compensation
• Psychological support
• Free language classes (English, Spanish, and German)
• 18 working days of paid vacation, paid sick leave, and sick days
• Regular team buildings and corporate events
• All necessary equipment for comfortable work

Job Description

Expert knowledge as an Oracle DBA, qualification according to Oracle Database Administration 2019 Certified Professional or comparable, current project experience > 5 years
Very good knowledge of setting up Oracle WebLogic Server as well as managed servers hosting OAS and ORDS, experience > 5 years
Good knowledge of Oracle Dataguard, experience > 2 years
Advanced Linux knowledge (shell, file management, processes and devices, resource monitoring, networks)

 

Job Responsibilities

This profile focuses on the middleware and application tier. They manage the software environments that connect users to the database.
Core Responsibilities:
Managing the Oracle WebLogic Server domains, administration consoles, and managed servers hosting OAS and ORDS (Oracle REST Data Services for APEX).
Configuring data sources (JDBC connections) that bridge WebLogic to the Exadata database.
Handling application-level security, SSL/TLS certificates, deployments, patches, and monitoring server memory/JVM logs.
Scope in your stack: They ensure that the OAS reporting portal is accessible and running smoothly, and that the ORDS layer is routing traffic correctly to your APEX apps.

Department/Project Description

Client is company based in US, provides solutions and common infrastructure to enable telecommunications partners to deploy and expand next-generation technologies

Skill Category

Data Engineering

Keyskills - Must Have

• Oracle RAC
• Agile
• Linux
• Git
• Oracle-DBA
• Weblogic
• TLS/SSL

About the client:

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

About the role:

We’re looking for a Senior Software Engineer who takes end-to-end ownership, thrives in ambiguity, and wants to build systems that matter. This role is central to rethinking and rebuilding our clients’ auto repossession and remarketing platform, a system that directly influences how vehicles are recovered, processed, and remarketed across the big automotive ecosystem. This is an AI-first engineering role—not in name, but in practice. You’ll continuously evaluate where AI (including LLMs and agentic tools) can meaningfully improve engineering velocity, system quality, and operational efficiency, while applying strong judgment about where it should not be used.

You’ll help shape architecture, influence technical direction, and own what you build—from design to production. 

What You’ll Do:

Build & Evolve Critical Systems

Rethink and reshape core workflows based on a deep understanding of auto repossession and remarketing processes.

Design and implement scalable, resilient systems using modern architectural principles: clear service boundaries, modularity, and observability.

Incorporate LLMs and AI-driven components to improve data validation, document processing, and operational decision-making.

• Use AI-assisted and agentic coding tools to accelerate development—while maintaining high standards for correctness, security, and maintainability.

Own Architecture & Technical Decisions

Drive architectural discussions and decisions, balancing pragmatism with technical excellence.

• Set and enforce high-quality bars for new services and modules, with a focus on testability, performance, and reliability.
• Identify and reduce technical debt in ways that measurably improve developer velocity and system robustness.

Build With an Ownership Mindset

Work across the full software lifecycle: design, build, deploy, operate, and iterate.

• Embrace a “you build it, you own it” DevOps mindset alongside your team.
• Make thoughtful trade-offs between effort, quality, and user value—always with accountability for outcomes.

Collaborate & Lead

• Work closely with product managers, designers, and other engineers in an agile, cross-functional team.
• Contribute ideas, challenge assumptions, and continuously improve how we build software.
• Mentor and support other engineers through code reviews, design discussions, and technical leadership.

What We’re Looking For:

• Canadian timezone work hours
• A Lead (7+ years of experience) engineer who owns results, not just implementations.
• Someone who enjoys complex problem-solving and isn’t afraid of legacy systems—or changing them.
• Strong engineering fundamentals: clean code, testing discipline, system design, and performance awareness.
• Strong experience with TypeScript and modern React / Next.js
• Strong experience building production systems with .NET (Core / modern .NET preferred).
• Strong experience building production systems with C#
• Comfort operating in production environments and learning from real-world feedback.
• A builder’s mindset: If you can think it, you can build it. If you build it, you own it.
• Experience leveraging AI, Generative AI (GenAI) to enhance engineering productivity, automate repetitive tasks, and optimize workflows. You should demonstrate the ability to integrate AI-driven solutions into your daily work — such as code generation, debugging, reviews, documentation, and decision support—to improve efficiency for yourself and your teams. A proactive approach to exploring and implementing AI tools that drive innovation and streamline development processes is highly valued. (Strong must)

Remote or Warsaw  |  Full-time

We are building and scaling a high-volume, performance-driven newsletter portfolio and we are looking for a Senior Email Marketing Manager to fully own newsletter growth, engagement, retention, and monetization. This is a role for someone who understands newsletters as a revenue channel, not just a publishing task — and who is driven to make ours the best in their categories, beating every competitor on engagement and quality.

You will work closely with writers and designers to ensure every send is optimized for opens, clicks, retention, and revenue while maintaining strong editorial quality. You will also own the part of this that most people get wrong: deliverability. 

Your primary mission: own 7 to 10 newsletters to start, drive their engagement and retention to best-in-class levels, and scale the portfolio beyond that as you prove the model. This is an IC role with room to build a team around you as the portfolio grows. We are looking for a proactive contributor who is comfortable pushing the limits — someone who is not satisfied matching the competition but determined to beat it. If you treat email as a growth engine and you have the deliverability chops to protect it at scale, this role was built for you.

WHAT YOU WILL OWN

Engagement, retention, and newsletter performance

• Own engagement and retention as the primary KPIs of the role — opens, clicks, and active subscriber rates are what you live and die by
• Own end-to-end newsletter strategy, publishing, and optimization across the full portfolio, starting with 7 to 10 properties
• Relentlessly find new ways to make our newsletters the best in their categories — study what competitors do, then do it better, and find the angles they have not thought of
• Optimize subject lines, preheaders, layouts, CTAs, and content flow against engagement, retention, and revenue
• Build and run retention programs that keep subscribers active and reduce churn over the full subscriber lifecycle
• Maintain consistent, high-quality publishing schedules across every newsletter — nothing slips, nothing goes out late
• Review, QA, and approve all outgoing content before it sends — zero tolerance for broken links, typos, or formatting errors

Deliverability and sender reputation

• Own deliverability end to end — inbox placement, sender scores, bounce management, and domain health across all sending infrastructure
• Monitor deliverability at the ISP level: know the rules and thresholds of each major provider, watch complaint rates independently per ISP, and pause or throttle sends by ISP when the data demands it
• Manage sending domains, IP pools, warm-up schedules, and authentication (SPF, DKIM, DMARC) with precision — no cowboy sends, no shortcuts
• Diagnose and resolve deliverability issues yourself before they become crises — authentication failures, spam trap exposure, blacklisting, FBL complaints — without deferring to platform support
• Use engagement data to protect inbox placement: know when to use openers versus clickers, how to manage sending to engaged versus dormant segments, and how to keep reputation strong across a high-volume portfolio
• Stay ahead of inbox provider algorithm changes and compliance shifts that affect delivery
• Where cold email is used for growth or partnerships, keep it on completely separate infrastructure from newsletter sending — protecting warm deliverability is non-negotiable

List health and hygiene

• Own list quality as a strategic asset across all properties — suppression management, re-engagement campaigns, sunset policies, and ongoing hygiene
• Design and execute re-engagement programs that recover dormant subscribers without damaging sender reputation in the process
• Build segmentation logic that ensures the right messages reach the right subscribers at the right time
• Set clear quality thresholds for subscriber health and act on them — know when to clean and have the discipline to do it

Monetization and advertising

• Integrate ads natively within newsletters to maximize CTR and revenue without harming reader trust
• Test ad placements, formats, and messaging continuously — and know exactly where the line is between revenue and reader fatigue
• Analyze monetization performance across the portfolio and continuously improve the strategy based on what the data shows
• Work closely with monetization partners to package inventory and report performance accurately and credibly
• Track revenue per send and revenue per subscriber as core metrics, not afterthoughts

Growth, experimentation, and best-in-class quality

• Proactively push the limits of what the newsletters can do — test new formats, content angles, engagement mechanics, and growth tactics that competitors are not trying
• Develop and test non-standard engagement formats — polls, surveys, interactive elements, reader feedback loops — and measure their impact on retention and list health
• Benchmark against the best newsletters in each category and set the standard higher — the goal is to be the best, not to keep pace
• Treat every send as a performance event: measure it, learn from it, and feed the insight back into the next one
• Bring ideas to the table without being asked — this role rewards initiative and punishes passivity

Editorial standards and compliance

• Own editorial and content-standards compliance across the portfolio — ensure every send meets the quality, accuracy, and brand standards expected of a best-in-class newsletter
• Maintain consistent editorial guidelines across all properties and enforce them as the portfolio scales
• Catch content issues — factual, tonal, formatting, or brand — before they ship, not after

Scaling, processes, and collaboration

• Collaborate closely with writers and designers to keep the portfolio publishing at a high standard
• Build repeatable processes, guidelines, and quality standards that let the operation scale beyond the initial 7 to 10 newsletters without quality slipping
• Use AI tools to accelerate content production, QA, and analysis across a high volume of sends
• Provide weekly performance insights and clear, actionable improvement recommendations
• As the portfolio scales, build and lead a team to support it — setting standards and maintaining quality across everyone's output

WHAT WE ARE LOOKING FOR

Must-have

• Strong experience in email marketing with direct ownership of high-volume programs — managing multiple lists or newsletters simultaneously is a requirement, not a bonus
• Deep understanding of email performance metrics: open rate, CTR, retention, conversions, and revenue per send — with engagement and retention as the metrics you optimize for above all
• A proven drive to grow newsletters and beat the competition — examples of taking a property and measurably improving its engagement, retention, or growth
• Hands-on deliverability expertise: ISP-level complaint monitoring, IP and domain warm-up, authentication, and inbox placement troubleshooting — strong critical thinking applied to data, not surface-level familiarity
• Proven experience managing multiple email campaigns at scale without quality slipping
• Some cold email experience, with the discipline to keep cold infrastructure separate from newsletter sending
• Comfortable using AI tools as part of daily production and analysis workflows
• Strong editorial and layout instincts — formatting, hierarchy, readability — you know what a good send looks like and you can spot what is wrong fast
• Excellent organization: able to manage 7 to 10 newsletters from day one and scale well beyond that without dropping a single one
• Strong QA mindset with zero tolerance for broken links, typos, or formatting errors
• Excellent English, written and verbal (C1 or above)

Nice to have

• Experience with ad monetization, sponsorships, or affiliate content
• Experience with platforms like Substack or Ghost
• Background in content-led growth or digital publishing
• Experience scaling multiple content brands or media products
• Familiarity with list validation services such as NeverBounce, ZeroBounce, or similar

WHO FITS THIS ROLE

You treat email marketing as a growth and revenue engine, not a publishing chore. You are not satisfied being good — you want our newsletters to be the best in their categories, and you are the kind of person who studies the competition specifically so you can beat them. Engagement and retention are the numbers you obsess over, because you know they are what separate a newsletter that compounds from one that slowly dies.

KEY COMPETENCIES

Engagement and retention  |  Deliverability and sender reputation  |  Newsletter growth  |  Monetization and advertising  |  Editorial standards and compliance  |  QA discipline  |  Proactive experimentation

J-VERS is a programmatic job advertising agency that helps employers find the right candidates in any industry by optimizing the hiring process. Founded in 2023, the company has grown 5x, building a fully remote team that serves over 150 enterprise clients across the US and EU through AI-powered advertising technology.

We’re transforming how companies hire — and we’re just getting started. Want in? Join us as the first Product Marketing Manager and help build a product-driven company from the ground up. Work directly with leadership, shape GTM and brand.

What You’ll Be Doing:

• Develop the marketing strategy aligned with J-Vers business goals.
• Define product value proposition and messaging for target segments (ICP).
• Conduct competitor analysis and market research to shape differentiation.
• Prepare GTM plans for feature releases, create landing pages, and communication assets.
• Create full sales-enablement suite: decks, one-pagers, battlecards.
• Build the first inbound flow (lead magnets, LinkedIn/social/email campaigns, MQL → SQL).
• Support Affiliate program: landing creation, partner messaging, promotion materials.
• Gather market signals and work with Product Team on roadmap input and feature prioritisation.

You are our ideal candidate if you have:

• 4+ years in Product Marketing / B2B Marketing / SaaS.
• Experience launching GTM and building product positioning.
• Understanding of sales processes (MQL, SQL, lead scoring).
• Able to work independently in a fast-paced environment.
• English: Upper-Intermediate+.

You’ll thrive at J-Vers if you are:

• Self-motivated and comfortable with autonomy;
• Passionate about using technology to solve real problems;
• Open to collaboration and knowledge sharing;
• Results-oriented and focused on impact;
• Curious and committed to continuous learning.

Why Join Us:Work Without Limits:

• Remote-first team with no location limits;
• Flexible 8-hour workday;
• Flat structure with direct access to leadership;
• Full set of equipment provided for your comfortable work.

Get Rewarded & Supported:

• Competitive compensation with transparent salary bands;
• Medical budget after 2 months of work;
• Mental health support;
• 24 vacation days + 20 paid sick days + 4 no-doc sick days + company-wide one-week break at year-end.

Endless Opportunities to Grow:

• Personal learning budget for professional development;
• Clear growth paths from Junior to Senior;
• Work with global clients (US & EU);
• Culture of feedback, mentorship, and constant learning.

Hiring Process:

1. Intro call with a recruiter
2. Values-based interview
3. Final interview with the team
4. Reference check
5. Job offer 🎉

At J-Vers, you’re not just filling a job — you’re joining a mission. We’re building something extraordinary where technology and humanity combine to transform hiring. Flex your skills. Expand your impact. Shape the future of global hiring.

Read more about us on Happy Monday 🌟