Jobs at Djinni

Project Description:

One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
Work supposes close cooperation with Customer team located in Houston and following Agile principles.
Our team is senior, supportive and friendly.

Responsibilities:

• Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
solutions.
• Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
fault, velocity model, etc.)
• Present architectural designs and technical proposals to the architecture review board.
• Ability to break down development tasks and lay out clear implementation roadmaps.
• Implement and optimize computation algorithms
• Design and develop both thin and thick client applications that interact with cloud-based microservices.
• Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
• Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
• Mentor junior developers and actively contribute to architectural and implementation decisions.
• Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
• Stay current with emerging technologies and trends in geophysical computing and software development.

Mandatory Skills Description:

6+ years of hands-on Java development experience
Strong Java Core knowledge
Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
Solid knowledge of design patterns and software architecture principles
Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
Stable career trajectory, no fragmented job history with short tenures

Nice-to-Have Skills Description:

C++ development skills
Practical experience with the Eclipse RCP framework
OSGi knowledge
Oil & Gas domain experience

Languages:

English: B2 Upper Intermediate

Langate is an award-winning provider of web development services in 3 main categories: business, healthcare, and education. At Langate, we're passionate about crafting digital solutions that make a real impact. We take immense pride in our strong collaboration with the U.S.  We're here to shape the future of technology, one milestone at a time. In addition to technical expertise, we value excellent communication skills. Collaboration and effective teamwork are the cornerstones of our success, and we believe in fostering an environment where everyone’s voice is heard and valued.     

About the project: DevOps Engineer responsible for building and maintaining cloud infrastructure for multiple projects in healthcare domain. 

Requirements:  

• 5+ years of experience   
• Azure (hands-on experience, certification preferred - Azure Expert/Engineer)
• Microsoft Azure services: App Services, Azure SQL, API Management, Application Gateway, AKS
• Strong understanding of Azure networking, identity, compute, storage
• Experience with Azure Entra ID, user/managed identity
• Terraform (or Terragrunt, OpenTofu)
• CI/CD: GitHub Actions - building and maintaining pipelines
• Experience building infrastructure from scratch (full cycle)
• English: upper-Intermediate or higher  

 Nice‑to‑have:  

• AWS (client considering migration from AWS to Azure)
• HIPAA compliance experience (for healthcare projects)
• Azure certification (proof of practical experience)
• Experience with AI services (Azure OpenAI) 

Responsibilities: 

• Deploy infrastructure from scratch (primary task)
• Maintain existing infrastructure
• Infrastructure as Code management (Terraform)
• Build and maintain CI/CD pipelines for applications and infrastructure  

Team: 1 DevOPS Lead. You will be inside a development team.    

Schedule: part-time, flexible schedule.  

Hiring process: HR interview + tech specialists   

We offer:  

• Competitive compensation
• Free English lessons    
• Flexible work schedule    
• Workshops    
• Career development plan 

Why Choose Us? What Do We Offer that's Exceptional?    

1. Cutting-Edge Technologies on Real Projects: At Langate, you'll work with the latest technologies on live projects. We're a dynamic, fast-growing company, so you'll find a minimal amount of legacy systems and plenty of opportunities to implement new technologies.
2. Work-Life Balance with Benefits: We value work-life balance and offer paid time off, including vacation days and sick leave. Remote work options and hearty life are part of the package too.    
3. Investment in Your Growth: We're committed to your professional development. You can expect training programs, courses, and opportunities to enhance your English language skills.   
4. Team Building and Unity: We know that a happy team is a productive team. That's why we organize team-building events and group activities to foster strong bonds and a sense of belonging.    

When you choose us, you're choosing a company that values innovation, invests in its employees, and provides a supportive and engaging work environment. Join us in shaping the future of technology!  

Need more information? Welcome! 

We are looking for a proactive HR Business Partner who shares our mindset, to act as a strategic partner for our leaders, drive data-backed HR initiatives, and optimize our people processes.
 

🧲 Responsibilities:

• Manage the full employee lifecycle for 50+ team members (onboarding, adaptation, performance reviews, salary reviews, offboarding).
• Act as a proactive partner for managers and leads: conduct regular 1:1s, support team management, performance evaluation, leadership development, and conflict resolution.
• Develop and implement HR policies and procedures, ensuring compliance across the organization.
• Work with HR analytics: collect and analyze data on key metrics, formulate hypotheses, and build dashboards.
• Leverage AI tools in your daily workflow: automate routine processes, handle analytics, draft documents, and generate reports.
• Launch and analyze HR surveys (pulse, eNPS), and design post-survey action plans.
• Initiate engagement, motivation, and retention programs.
• Identify training needs, design development strategies for both individual employees and teams, organize L&D programs, and evaluate their effectiveness.
• Improve and scale HR processes, proposing new data-driven initiatives.
• Foster and support a positive corporate culture.

🧲 Requirements:

 

• 3+ years of experience in HR, with at least 1 year as an HRBP or in a role with a similar level of responsibility.
• Solid understanding of the full employee lifecycle and a proven track record of optimizing HR processes.
• Experience working with HRIS (PeopleForce, BambooHR, Zoho People, or similar) and ATS.
• Hands-on HR analytics skills: experience with metrics, data handling, and reporting.
• Active use of AI in your workflow (ChatGPT, Claude, Gemini, or similar) and a readiness to integrate AI into HR processes.
• Experience conducting HR surveys and developing initiatives based on their results.
• Knowledge of approaches to performance management and compensation reviews.
• Experience drafting and implementing HR policies.
• Strong communication skills, with the ability to build relationships and influence stakeholders.
• Analytical mindset, structured approach, and sharp attention to detail.
• Proactivity and the ability to thrive in a fast-paced, fast-changing environment.

🧲 What we offer 

• Flexible work format: Remote, hybrid or office: your choice. Results matter more than location.
• 20 days of paid vacation: To fully recharge, not just "take a little break." 
• Health insurance: Coverage across Ukraine + compensation for wellness programs abroad.
• Learning and development: Corporate courses, workshops and platform access: all company-funded. 
• Team building and events: Online and offline, because great products are built by people who trust each other.

Ready to take ownership and drive impact? We look forward to receiving your application!

AI Creative Operations Manager

We are looking for an AI Creative Operations Manager to build and own our end-to-end creative production pipeline.

This role is focused on systems, workflows, and execution rather than traditional design. You will be responsible for establishing scalable processes for generating, testing, and iterating static and video creatives using AI tools.

We are looking for someone highly autonomous who can operate as an internal creative engine for the marketing team.
 

Responsibilities

• Build and optimize AI-powered creative production workflows
• Develop systems for generating large volumes of static and video creatives
• Create repeatable pipelines for ideation, prompting, asset generation, editing, and iteration
• Work with modern AI tools including Veo, Kling, Runway, Midjourney, Flux, ChatGPT and similar platforms
• Produce marketing assets independently or coordinate freelancers when needed
• Build prompt libraries, templates, SOPs, and internal creative frameworks
• Continuously research emerging AI tools and integrate them into the workflow
• Collaborate closely with media buyers to analyze performance and rapidly iterate creatives
• Scale creative output while maintaining quality and consistency
 

Requirements

• 2+ years of experience in creative production, content operations, creative strategy, or AI-assisted content creation
• Proven experience using AI tools for static and video generation
• Strong understanding of performance marketing and paid acquisition creatives
• Experience building processes rather than only designing assets manually
• Ability to work independently with minimal supervision
• Highly organized mindset with a focus on systems and efficiency
• Comfortable experimenting with new technologies and adapting quickly
 

Nice to Have

• Experience in mobile apps, subscriptions, AI products, or consumer startups
• Familiarity with automation tools such as n8n, Make, Zapier, or custom workflows
• Basic editing skills in Premiere Pro, CapCut, or After Effects
• Understanding of Meta Ads and TikTok creative best practices
 

What We Offer

• Opportunity to define the creative production system from scratch
• Access to cutting-edge AI tools and infrastructure
• High ownership and decision-making autonomy
• Fast-moving, AI-first environment focused on experimentation and growth

We are looking for a Full-Stack AI Engineer (AI-First Product) to build and scale AI-powered products from idea to production.

You will work across the entire stack — from LLM integrations and machine learning pipelines to backend architecture, APIs, databases, and frontend interfaces. This role is ideal for someone who enjoys shipping products fast, experimenting with AI capabilities, and owning features end-to-end.
 

⚡ Responsibilities

• Design, build, and deploy AI-first products and features
• Integrate and optimize LLMs (OpenAI, Anthropic, Gemini, open-source models)
• Develop backend services, APIs, and scalable infrastructure
• Build modern frontend interfaces for AI applications
• Create RAG systems, agent workflows, and tool integrations
• Develop evaluation frameworks for prompts, models, and user interactions
• Work with vector databases and embedding pipelines
• Fine-tune, customize, and optimize open-source models when needed
• Implement analytics, monitoring, and experimentation frameworks
• Collaborate on product strategy and rapidly iterate based on user feedback
• Ship production-ready features with a strong focus on speed and quality
   

✅ Requirements

• 3+ years of software engineering experience
• 1+ years of hands-on experience building AI products
• Strong proficiency in Python
• Experience with Git, CI/CD, and production deployments
• Strong product mindset and ability to move quickly
• English level B1+
   

🎯 KPIs

• Features shipped per month
• Time from idea to production
• API reliability and latency
• User retention and engagement metrics
• AI quality metrics
• Infrastructure efficiency
• Product growth contribution
   

🎁 We Offer

• Fully remote work
• AI-first culture with fast decision-making
• Ownership over architecture and product direction
• Opportunity to build products used by thousands of users
• Access to modern AI tooling and infrastructure
• Competitive compensation
• Potential growth into Lead AI Engineer, Head of AI, or CTO roles.

🚀 About the role

We are looking for a Media Buyer (Push / Pop / In-App Traffic) to scale utility mobile applications across Push, Popunder, In-App and performance traffic networks.

You will be responsible for launching, optimizing, and scaling campaigns with a strong focus on profitability, creative testing, funnel optimization, and sustainable volume growth.
 

⚡ Responsibilities

• Launch and scale campaigns across Push, Popunder, In-App and Native traffic sources
• Manage and optimize traffic from networks such as RichAds, PropellerAds, RollerAds, EvaDav, AdMaven, Zeropark, Clickadu and similar platforms
• Build and optimize funnels (Ad → Store Page / Web Funnel → Subscription → Purchase)
• Generate and test hypotheses for creatives, angles, audiences and placements
• Manage budgets and optimize campaigns towards CPA, ROI and ROAS targets
• Analyze campaign performance metrics (CTR, CPC, CPI, CPA, ROAS, Retention, LTV)
• Collaborate with designers to produce and iterate creatives at scale
• Test new GEOs, networks, placements and bidding strategies
• Identify winning setups and scale them while maintaining profitability
• Monitor traffic quality, fraud indicators and campaign stability
   

✅ Requirements

• 2–3+ years of experience with Push, Pop, In-App or Native traffic sources
• Strong understanding of performance marketing principles and mobile acquisition funnels
• Experience working with utility, VPN, cleaner, security or subscription-based applications
• Experience with tracking platforms such as:
  • Voluum
  • Binom
  • RedTrack
  • Keitaro
• Knowledge of attribution and analytics tools:
  • AppsFlyer
  • Adjust
  • Firebase
  • Google Analytics
• Proven ability to scale campaigns profitably
• Strong analytical and data-driven mindset
• Experience working with Tier-1 GEOs (US, CA, UK, AU) is preferred
• English level B1+
   

🔥 Nice to have

• Experience with iOS subscription apps
• Experience with utilities, VPN, AI apps or mobile SaaS products
• Knowledge of anti-fraud solutions and traffic quality monitoring
• Experience running campaigns on Moloco, DSPs or OEM traffic sources
• Understanding of App Store Optimization (ASO) fundamentals
• Basic creative strategy and copywriting skills
   

🎯 KPIs

• ROI / Profitability
• CPA stability

• Spend scaling

   

🎁 We offer

• Fully remote work
• Fast execution and minimal bureaucracy
• Access to substantial advertising budgets
• Opportunity to work on utility apps with global reach
• Freedom to test new traffic sources and strategies
• Growth path to Senior Media Buyer, Team Lead or Head of Acquisition roles

We are the creators of a new fintech era!
Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,200 professionals united by a shared vision of shaping the Web3 future.
We are building our own blockchain ecosystem, ensuring maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.
Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT, and VISA.

The future of Web3 starts with you — join us as Liquidity Manager!

Requirements:

- Bachelor’s or Master’s degree in Finance, Computer Science, Quantitative Finance, or related fields.
- 2+ years of experience in market-making, liquidity provision or quantitative trading, preferably in crypto markets, derivatives, or high-frequency trading.
- Deep understanding of trading systems, market microstructure, order book dynamics, and end-to-end execution workflows.
- Proficiency in designing and implementing trading strategies and algorithms, including hedging, market making, and arbitrage strategies.
- Experience with monitoring and analytics tools (e.g., Grafana, Tableau, custom dashboards)
- Ability to work in high-pressure, fast-moving environments, make data-driven decisions, manage multiple strategies simultaneously
- Solid understanding of risk management and operational workflows; experience designing processes to improve efficiency, control, and decision-making.
- Strong analytical and problem-solving skills, with ability to adapt strategies to rapidly changing market conditions.

Responsibilities:

- Support liquidity business development;
- Work with Ops, Risk, Engineering teams to build and continuously improve trading and risk management tools;
- Monitor liquidity metrics and trading strategies and optimize performance;
- Actively contribute to the growth and optimization of the liquidity business by identifying issues, proposing solutions, and implementing improvements.
- Analytics and innovation support.

Working conditions:

Immerse yourself in Crypto & Web3:
— Master cutting-edge technologies and become an expert in the most innovative industry.
Work with the Fintech of the Future:
— Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
— Gain unique experience and be part of global transformations.
Drive Innovations:
— Influence the industry and contribute to groundbreaking solutions.
Join a Strong Team:
— Collaborate with top experts worldwide and grow alongside the best.
Work-Life Balance & Well-being:
— Modern equipment.
— Comfortable working conditions and an inspiring environment to help you thrive.
— 24 calendar days of paid leave.
— Additional days off for national holidays.

• Project Description:

  We are looking for an HR Administration / HR Operations Specialist to join the Talent Acquisition & Management Shared Services Center (TAM SSC). This role is focused exclusively on HR administrative processes throughout the employee lifecycle and does not include recruitment, talent acquisition, HR business partnering, or employee relations responsibilities.

  
  Our team: a cross-regional and cross-cultural team of ~20 people based in 3 countries (Ukraine, Serbia, India).

  
  Technologies used: MS Excel as the main tool, MS Word, MS PowerPoint, and Internal Systems.

   

• Responsibilities:

  • Qualified HR services implementation for employees in different regions (countries) of DXC Luxoft presence.
  • Support, organization, and performing of different types of HR personnel processing in foreign company's locations (onboarding, transfers, vacations, sick leaves, terminations) - (there is specially prepared good supervision program for newly hired employees to teach and help them to cope with subtle details of international personnel processing).
  • Employees' files handling in internal informational systems.

   

• Mandatory Skills Description:

  • 1+ year of experience in HR Administration, HR Operations, Personnel Administration, HR Shared Services, or Employee Lifecycle Administration.
  • Knowledge of MS Excel, experience in preparation of presentations in MS PowerPoint as well as working knowledge of MS Outlook and MS Word.

  • Fluent English (written/spoken).
  • Proactive, well-organized, and result-oriented person.
  • Mature personality, excellent communication, and organization skills.
  • Strong task management.
  
  Please note: This position is not suitable for candidates whose experience is primarily in HR Business Partnering, Recruitment, Talent Acquisition or Employer Branding.

About Us

ODD Systems is a Ukrainian defense-tech company that transforms engineering innovation into solutions for national defense. Our mission is to create the weapons of the future—technologies that save lives and restore justice.

Our products — the Kurbas thermal imaging cameras and the Stus, Lupynos, and Horska FPV drones—are named after prominent figures of the “Executed Renaissance” and the “Sixtiers” movement. Their names, once synonymous with the struggle for Ukrainian identity, now protect our country on the battlefield.

Purpose of the Role: this isn’t a paperwork HR role. You will have a seat at the table, working directly with leadership to shape how our company grows. You’ll have the autonomy to experiment with new engagement formats, influence the organizational structure, and see the direct impact of your work on the team’s success.

Experience and skills we are looking for:

• The People/Business Partner: You have 3+ years of experience as an HR Manager or People/Business Partner, preferably in a start-up, fast-paced environment.
• The Strategist: You don’t just feel that the mood is low — you use data, surveys, and hypotheses to prove it and find a solution.
• Communication Pro: You are comfortable talking to people at all levels and have experience navigating tough conversations.

• Process Builder: You love creating order out of chaos and have a track record of building people processes from the ground up.

   

Key Responsibilities:

• Full Cycle Employee Management
  Owning the entire employee lifecycle of a dedicated team: from a smooth onboarding experience to impactful development plans and offboarding.
  Acting as the primary point of contact for employees, providing guidance on growth, internal policies, and company culture.
• Performance & Talent Development
  Partnering with team leads to conduct regular performance reviews, identify high-potential talent, and address growth areas.
  Supporting managers in handling complex cases, conflict resolution, and feedback loops.
• Retention & Team Climate
  Monitoring team health through regular 1-on-1s, eNPS surveys, and pulse checks.
  Identifying risks and implementing retention strategies based on data-driven insights.
  Managing organizational changes, including team restructures and role definitions.

• Strategic HR Initiatives
  Building and launching new HR processes from scratch aligned with company OKRs.
  Analyzing HR metrics (turnover, engagement) to propose and execute improvements.

   

It’s a plus if you have:

Preferably experience in a start-up, fast-paced environment.

Why Choose Us?

• Work that has a real impact. We build products that directly strengthen Ukraine’s defense capabilities.
• Opportunity to work alongside top-tier engineers in MilTech and autonomous systems.
• Official employment under the Diia.City legal framework.
• The possibility of reservation (deferment) for conscripts in accordance with the requirements of current legislation.
• Annual paid leave — 24 calendar days.
• Additional paid leave for veterans — 14 calendar days.
• Paid sick leave in accordance with the law.
• Voluntary health insurance upon successful completion of the probationary period.

• Possibility of reimbursement for training costs according to internal company policies.

   

We are not just looking for employees, but for like-minded individuals who share our values and are ready to build the future of Ukrainian MilTech.

We are seeking an experienced Senior Data Engineer to help build and scale modern data platforms that power analytics, reporting, and data-driven decision-making. In this role, you will work with cloud-based data ecosystems, leveraging Databricks and Spark technologies to process large volumes of data and deliver high-performance solutions across the organization.

You'll collaborate closely with engineering teams, analysts, and business stakeholders to design robust data architectures, improve data reliability, and support mission-critical initiatives.

Key Responsibilities

• Design, develop, and maintain scalable data pipelines and processing frameworks.
• Create and optimize ETL/ELT workflows for efficient data ingestion and transformation.
• Work with high-volume datasets in distributed computing environments.
• Develop data models, transformation logic, and integrations across multiple systems.
• Partner with cross-functional teams to understand data requirements and deliver reliable solutions.
• Monitor and improve data quality, platform performance, and operational stability.
• Contribute to architecture decisions and implement data engineering best practices.
• Support cloud-based data infrastructure and continuous improvement initiatives.

Required Qualifications

• 7+ years of professional experience in Data Engineering.
• Proven hands-on expertise with Databricks in production environments.
• Strong experience with Apache Spark and PySpark.
• Advanced SQL skills with a focus on performance optimization.
• Solid background building and maintaining ETL/ELT processes.
• Strong Python development experience.
• Experience working with large-scale data processing and analytics platforms.
• Hands-on experience with at least one major cloud provider (AWS, Azure, or GCP).
• Professional proficiency in both English (C1) and Russian (C1).
• Strong problem-solving skills and ability to work independently in a remote environment.

Contract Details

• Full-time engagement under a B2B agreement.
• Long-term, open-ended collaboration.
• Monthly gross compensation.
• Payments made to the contractor's registered business account (FOP / Sole Proprietorship / equivalent).
• Contractor is responsible for managing and paying their own taxes.
• Standard 8-hour workday.
• 30-day notice period.

Nice to Have

• Experience designing data lake or lakehouse architectures.
• Familiarity with data governance, monitoring, and observability tools.
• Experience supporting analytics, BI, or machine learning workloads.

If you have a strong background in Databricks and large-scale data engineering and are looking for a long-term remote opportunity, we'd love to hear from you.

We're looking for an experienced Senior Full-Stack Engineer to join a growing team building data-driven products at scale. This role combines backend development, modern frontend engineering, and data platform expertise, with a strong focus on Databricks, Python, and TypeScript.

You'll work on systems that help organizations collect, process, analyze, and visualize large volumes of data, while contributing to technical architecture and product development decisions.

What You'll Do

• Develop and enhance scalable data solutions using Databricks
• Build reliable backend services, APIs, and integrations with Python
• Create intuitive, high-performance web applications using TypeScript and React
• Design internal tools, dashboards, and workflow management interfaces
• Partner with product, design, and engineering teams to deliver new features
• Improve system performance, scalability, and maintainability
• Participate in technical planning, architecture discussions, and code reviews
• Ensure code quality through testing, documentation, and engineering best practices

What We're Looking For

Required

• 7+ years of professional software engineering experience
• Commercial experience working with Databricks in production environments
• Strong backend development experience with Python
• Strong frontend development experience with TypeScript
• Experience building applications with React or similar modern frameworks
• Experience developing data platforms, analytics solutions, or ETL/ELT systems
• Strong SQL skills and experience working with large datasets
• Experience designing and consuming RESTful APIs
• Familiarity with cloud environments such as AWS, Azure, or GCP
• Experience working on distributed or data-intensive systems
• English proficiency at C1 level or higher
• Russian proficiency at C1 level or higher

Nice to Have

• Experience with Apache Spark and Delta Lake
• Experience with Airflow, Kafka, or related data engineering technologies
• Background building enterprise SaaS products
• Knowledge of modern data warehousing and analytics architectures

Contract Details

• Full-time engagement (8 hours per day)
• Long-term B2B contractor agreement
• Competitive monthly compensation
• Payments made to your registered business entity (FOP / Sole Proprietor / equivalent)
• Contractor is responsible for local taxes and compliance requirements
• Open-ended cooperation
• 30-day notice period for either party

Project Description:

The primary goal of the project is the modernization, maintenance and development of an eCommerce platform for a big US-based retail company, serving millions of omnichannel customers each week.

Solutions are delivered by several Product Teams focused on different domains - Customer, Loyalty, Search and Browse, Data Integration, Cart.

Current overriding priorities are new brands onboarding, re-architecture, database migrations, migration of microservices to a unified cloud-native solution without any disruption to business.

Responsibilities:

We are looking for Data Engineer who will be responsible for designing a solution for a big retail company. The main focus is to support processing of big data volumes and integrate solution to current architecture.

Mandatory Skills Description:

• Readiness to work until 8.00 pm CET (no need to do overtimes)
• Overall years of experience required 8+ (at least 1+ year in a Lead/Architect position)
• Strong, recent hands-on expertise with Azure Data Factory and Synapse is a must (3+ years).
• Strong expertise in designing and implementing data models, including conceptual, logical, and physical data models, to support efficient data storage and retrieval.
• Strong knowledge of Microsoft Azure, including Azure Data Lake Storage, Azure Synapse Analytics, Azure Data Factory, and Azure Databricks, pySpark for building scalable and reliable data solutions.
• Extensive experience with building robust and scalable ETL/ELT pipelines to extract, transform, and load data from various sources into data lakes or data warehouses.
• Ability to integrate data from disparate sources, including databases, APIs, and external data providers, using appropriate techniques such as API integration or message queuing.
• Proficiency in designing and implementing data warehousing solutions (dimensional modeling, star schemas, Data Mesh, Data/Delta Lakehouse, Data Vault)
• Proficiency in SQL to perform complex queries, data transformations, and performance tuning on cloud-based data storages.
• Experience integrating metadata and governance processes into cloud-based data platforms
• Certification in Azure, Databricks, or other relevant technologies is an added advantage
• Experience with cloud-based analytical databases.
• Experience with Azure MI, Azure Database for Postgres, Azure Cosmos DB, Azure Analysis Services, and Informix.
• Experience with Python and Python-based ETL tools.
• Experience with shell scripting in Bash, Unix or windows shell is preferable.
• Demonstrated ability to lead cross-functional engineering teams, define technical strategy and architecture, drive delivery of complex data platforms, mentor engineers, and effectively communicate with stakeholders at all organizational levels.

Nice-to-Have Skills Description:

• Experience with Elasticsearch
• Familiarity with containerization and orchestration technologies (Docker, Kubernetes).
• Troubleshooting and Performance Tuning: Ability to identify and resolve performance bottlenecks in data processing workflows and optimize data pipelines for efficient data ingestion and analysis.
• Collaboration and Communication: Strong interpersonal skills to collaborate effectively with stakeholders, data engineers, data scientists, and other cross-functional teams.
• Ability to plan, estimate and track progress of implementing features
• Computer Science and data science academic and education credentials

Languages:

English: B2 Upper Intermediate

About The Position

MWDN is an international recruitment and outstaffing company with 23+ years of experience connecting exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. In this role, MWDN acts as the recruitment partner, and the selected candidate will work directly with the client’s team on their product in an international environment.
 

Why does MWDN rock?

Here’s what you can expect when you join MWDN:

• Security: We carefully vet our clients to minimize risks and ensure reliability and timely payments—no fraud or unpleasant surprises.
• Career support: If a project isn’t the right fit, we support you and actively help find new opportunities that match your skills and career goals.
• Legal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.
• Professional development: We offer English courses and professional growth opportunities, as well as team-building events.

Why choose us? MWDN is ranked among the top 5 IT employers in our region according to DOU. We take pride in our transparency and strong commitment to our team. Curious to learn more? See what our employees say about working with us on DOU.
 

What is your new project?

• Domain: Identity and Access Management (IAM) software
• Location: Israel
• Company size: 200-500 employees
• Founded in: 2014
   

What is your new project?

Are you ready to join a game-changing force in identity and access management?

Our client is revolutionizing the way enterprises protect user identities in a passwordless world. You’ll be working at the intersection of cutting-edge biometrics, behavioral analytics, and next-gen identity orchestration — helping the world’s leading brands safeguard millions of users. Backed by more than 100 M Series A — one of the largest in cybersecurity history — and trusted by major global enterprises, they offer the agility of an innovator with the strength and backing of an industry leader.

Ready to take part in redefining IAM for the modern era? Let’s talk.
 

What makes you a great fit

• 3+ years of hands-on experience in security research, mobile security, browser research, fraud research, detection research, reverse engineering, or a related technical role.
• Experience with web browsers, mobile browsers, WebViews, browser APIs, JavaScript runtime behavior, browser automation, fingerprinting, client-side web security, and low-level browser technologies.
• Familiarity with the architecture or codebase of modern open-source browsers and rendering engines, such as Chromium, WebKit, Blink, or Gecko, with the ability to reason about how browser internals can expose new security and fraud signals.
• Experience with native Android and/or iOS applications, mobile OS behavior, app instrumentation, emulators, device spoofing, mobile automation, mobile security, and low-level platform APIs.
• Attacker mindset and practical understanding of how malicious actors attempt to bypass detection using automation, AI agents, spoofing, and anti-detection techniques.
• Ability to identify subtle technical signals and turn them into practical detection or data collection opportunities.
• Experience designing technical experiments and validating research hypotheses.
• Experience with one or more SDK development languages and environments, such as TypeScript/JavaScript for web, Kotlin/Java for Android, or Swift/Objective-C for iOS, with the ability to understand implementation constraints and collaborate effectively with SDK engineering teams.
• Scripting ability, preferably in Python, for building research tools, automation, and analysis workflows.
• Ability to work independently on ambiguous problems and communicate findings clearly to engineering, product, and research stakeholders.
   

Advantages

• Experience with Web SDKs, Mobile SDKs, client-side telemetry, device intelligence, behavioral signals, AI agent detection, or fraud detection products.
• Experience researching bots, credential stuffing, scraping, headless browsers, AI-assisted automation, app cloning, SDK abuse, phishing kits, malware, or
• anti-detection frameworks.
• Experience with reverse engineering Android or iOS applications.
• Familiarity with detection quality measurement, feature evaluation, false-positive analysis, production monitoring, or machine learning concepts.
• Bachelor’s degree in Computer Science, Cybersecurity, Data Science, or a related field— or equivalent hands-on experience.
  
   

Your day-to-day in this position

• Research browser, WebView, Android, and iOS environments from an attacker’s perspective.
• Identify new security signals, behavioral indicators, and technical patterns that can improve fraud, abuse, automation, and AI agent detection.
• Investigate attacker techniques involving bots, browser automation, AI agents, emulators, device spoofing, hooking, instrumentation, remote access tools, and
• anti-detection methods.
• Design and run experiments to compare legitimate, automated, AI-assisted, and manipulated environments.
• Evaluate proposed signals for reliability, stability, spoofability, privacy sensitivity, performance impact, and production feasibility.
• Translate research findings into clear SDK feature requirements for web and mobile data collection.
• Build internal tools, scripts, and lab environments to support signal research and validation.
• Collaborate with SDK, engineering, product, and detection teams to move research from hypothesis to production.
  
   

Our next steps

✅ Intro call with a Recruiter — ✅ Intro call with client — ✅ Technical interview — ✅ CTO interview — ✅ HR interview — ✅ Reference check — ✅ Offer

We are looking for a Lead Backend Developer to architect and own the backend infrastructure of our fintech platform. You will design scalable microservices, manage critical data flows, and ensure system reliability at scale. Work directly with product, design, and business stakeholders to translate requirements into robust backend systems. 

This is a hybrid role, and we are currently considering candidates based in Lviv (Ukraine). 

Fully remote work is not an option for this position.

What You Will Do
Backend Architecture & Design

• Own the backend architecture end-to-end across microservices.
• Design and implement Node.js / Express services handling 20M+ transactions monthly.
• Architect PostgreSQL schemas for reliability and performance at scale.
• Define API contracts (GraphQL, REST) that support frontend and partner integrations.
• Make critical decisions on data consistency, caching, and async patterns.

Microservices & System Design

• Build and maintain multiple Node.js / Express microservices with clear ownership boundaries.
• Implement webhook-driven workflows and event-driven architecture.
• Design and implement real-time data synchronization pipelines.
• Manage message queues (RabbitMQ) for async operations and inter-service communication.
• Ensure row-level security (RLS) and multi-tenant data isolation at the database layer.

Data & Performance

• Design and optimize PostgreSQL schemas using Prisma ORM.
• Write complex queries, manage indexes, and ensure query performance.
• Implement caching strategies and data consistency patterns.
• Build audit trails and changelog tracking for compliance and debugging.
• Handle sensitive data (KYC, AML, financial records) with security-first approach.

Integration & Third-Party Services

• Integrate with external services (KYC providers, document verification, acquiring networks).
• Design and maintain API integrations with payment processors and clearing centers.
• Build robust error handling and retry logic for critical integrations.
• Document APIs and maintain SDK/integration guides for partners.
Communication & Leadership

• Work directly with product managers and stakeholders to clarify backend requirements.
• Proactively flag technical risks, propose solutions, and keep stakeholders informed.
• Give technical feedback on product feasibility and scalability implications.
• Lead backend code reviews with focus on quality, performance, and knowledge sharing.
• Mentor junior developers and foster backend engineering best practices.

What We Are Looking For
Core Requirements:

• 5–7 years of production experience in Node.js backend development.
• Strong TypeScript across the entire stack (no JavaScript-only experience).
• PostgreSQL expertise: schema design, optimization, transactions, advanced queries.
• Prisma ORM or similar ORMs and hands-on experience with relational databases.
• GraphQL schema design and resolver implementation (REST a plus).
• Microservices architecture: designing boundaries, managing state, async communication.
• RabbitMQ or similar message brokers; event-driven architecture patterns.
• Experience with fintech, payments, or regulated financial products.
• Strong communication skills and comfort working directly with non-technical stakeholders.

Nice to Have:

• Distributed systems experience (eventual consistency, saga patterns, consensus).
• gRPC for service-to-service communication.
• Experience scaling to 100K+ users and handling high transaction volume.
• Background in AML/KYC compliance or financial data handling.
• DevOps sensibility: monitoring, logging, deployment pipelines.
• Experience mentoring backend teams.

Tech Stack
Core: Node.js, Express, TypeScript, PostgreSQL, Prisma ORM, GraphQL, RabbitMQ, gRPC
Supporting: REST APIs, Webhooks, Real-time data sync, Multi-tenant architecture, Audit logging

What We Offer

• Full backend ownership and architectural control.
• Work on systems handling millions of transactions and 100K+ merchants.
• Direct access to product and business stakeholders.
• Modern microservices stack with no legacy debt.
• AI-friendly engineering culture—we embrace tools that make you more effective.
• Deep fintech learning: multi-partner networks, compliance, payment flows.
• Competitive compensation and benefits package.

• Project Description:

  Web application for the oil & gas industry supporting day-to-day operational workflows.
  The product is actively used in production and continues to evolve with new features and improvements. The project focuses on usability, efficiency, and clarity across data-rich workflows, helping domain experts work with operational information more effectively.

   

• Responsibilities:

  Working with user flows, requirements, and design tasks under the guidance of a Sr UX Designer:
  • Create and maintain high-fidelity screen designs and UI components in Figma
  • Contribute to UX activities, user flows, and interaction design for real product features
  • Work with the design system and support consistency across the product

   

• Mandatory Skills Description:

  • Basic understanding of UI/UX principles, patterns, and methodologies
  • Experience with Figma
  • Understanding of accessibility and usability fundamentals
  • Ability to work independently on assigned tasks while collaborating closely with the team

   

• Nice-to-Have Skills Description:

  • Experience with documentation tools
  • Understanding of technical constraints in web applications
  • Ability to work in an evolving environment with changing requirements