Jobs at Djinni

We're an IT services consulting firm hiring an experienced Oracle PL/SQL consultant for a key enterprise banking client. This is a hands-on delivery role where you'll shape and implement a critical change in the bank's internal loans landscape - with real regulatory impact.

PROJECT DESCRIPTION

You will work on the implementation of a Loans Modification and Effective Interest Rate (EIR) solution according to IFRS 9.

What is IFRS 9?

IFRS 9 is an international accounting standard for how financial instruments (including loans) must be classified, measured, and reported, including how expected credit losses are reflected. For a bank, aligning loan-related processes and calculations with IFRS 9 is essential for regulatory compliance and accurate reporting.

Your core delivery focus:

• Implement "Loans Modification and EIR" solution aligned to IFRS 9, improving regulatory compliance and simplifying the bank's operations and reporting landscape.
• Take on other tasks related to the Dallas application that require architecture, analysis, development, testing, and bug fixing.
• Perform IT analysis of the existing internal loan management system.
• Do new requirements analysis, development, testing, and documentation.
• Cooperate closely with stakeholders: business analysts and other IT specialists.
  
  DO YOU HAVE (MUST-HAVE SKILLS)...
• Oracle PL/SQL engineering - 7-10 years (senior consultant level; able to solve abstract tasks, a lot of sophiticated Oracle PL/SQL development hands on deliveries expected, lead others, mentor)
• Strong experience delivering analysis → development → testing → bug fixing in enterprise systems
• Agile / Scrum experience - 5+ years (comfortable working in iterative delivery with stakeholders)
• Clear, structured communication (you'll work side-by-side with business analysts and IT specialists)
  
  BONUS SKILLS...
• These are not required, but they will seriously strengthen your profile:
• Accountancy knowledge (especially where reporting/regulatory alignment matters)
• Loan contract management domain know-how (loan lifecycle, modifications, contract changes)

Client

Our client is a global travel-tech company providing corporate and leisure travel services worldwide.

Project overview

The client currently utilizes SAP Compleat as a mid-office automation platform. The system is deeply integrated with GDS platforms and supports complex travel workflows. SAP Compleat enforces quality assurance, applies fare and policy checks, manages PNR enrichment, and routes tasks into queues for agents.

This role focuses on business-as-usual support and incremental enhancements to keep the existing solution stable and efficient.

Position overview

We are seeking a Senior Business Analyst to serve as the bridge between operations and technology teams. The role involves analyzing existing workflows, gathering requirements for rule changes, and ensuring that SAP Compleat configurations align with business policies and compliance standards.

The ideal candidate will have strong analytical skills, a deep understanding of travel processes, and experience working with mid-office automation systems.

This position offers a $1,000 sign-in bonus for joining our team.

Responsibilities
 

• Analyze current SAP Compleat workflows and identify optimization opportunities.
• Gather and document requirements for new rules, validations, and workflow changes.
• Investigate issues highlighted by the client.
• Translate travel policies into functional specifications for SAP Compleat routines.
• Collaborate with developers to ensure accurate implementation of changes.
• Maintain documentation of processes, dependencies, and configuration logic.
• Act as a subject matter expert for stakeholders on SAP Compleat capabilities and limitations.
   

Requirements
 

• Proven experience as a Business Analyst in the travel domain or with mid-office systems.
• Strong understanding of GDS processes, PNR lifecycle, and queue management.
• Ability to interpret travel policies and compliance requirements.
• Excellent communication and stakeholder engagement skills.
• Familiarity with SAP Concur/SAP Compleat configuration concepts (rules, workflows, dictionaries) is a plus.
   

Nice to have
 

• Experience as a travel agent.

We are a product team, and we are looking for a Next.js Developer to build a high-quality web product with a focus on performance and long-term maintainability. Deep knowledge of the Next.js framework is required.

Tech Stack

- Frontend: React, Next.js, Tailwind CSS, Zustand, shadcn/ui, Framer Motion

- Backend: NestJS, TypeORM/PostgreSQL
- API: GraphQL

Here is a brief product overview with real screenshots of dashboards, charts, and pages you will implement:

https://www.figma.com/design/6loPX6cHx4fIqZ53hsjtgq/Platform-Overview

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Required: 
Availability for business trips abroad (infrequent, but required)

Project Overview:
Healthcare solution needs to expand their team.

Client Location: EU

Requirements (Must-have):
• 2+ years experience in Scala (Spark)
• Bold experience in Azure, Databricks (no strictly in years).

Hiring Process:
- Intro call
- Technical discussion (focused on real experience)
- Offer
Start: ASAP

 

Tech Fullstack Lead – Energy Digital Twin (AI-driven)

Product

Data-intensive SaaS platform for energy asset optimization (BESS, PV, Wind):

• Market data ingestion (time-series)
• Price forecasting
• Storage dispatch optimization
• Degradation modeling
• Virtual trading simulations

Role

Own end-to-end architecture and lead hands-on development:

Data → Modeling → Backend → Frontend → Cloud

Responsibilities

• Design scalable system architecture
• Build core backend services (Python / Node / Go)
• Work with time-series & simulation workflows
• Develop analytical dashboards (React / Next.js)
• Ensure performance, reliability, and clean code

AI-Driven Engineering

We use AI tools for:

• Code acceleration
• Refactoring
• Test generation

You must:

• Apply strong engineering judgment
• Distinguish prototype vs production code

Requirements

• 6+ years software engineering
• Architecture leadership experience
• Strong backend expertise
• Experience with scalable data systems
• Cloud & CI/CD experience

Nice to Have

• Energy / trading / fintech domain
• Optimization or forecasting background
• Kubernetes / Terraform

We’re looking for a Partnership Manager who shares our core values: empathy, proactive contribution, and commitment to growing together.
We believe in long-term collaboration and mutual learning — your voice matters from the first day, and we’re excited to grow together 🚀
 

Responsibilities:

✦ Search and selection of partners, contractors, and handling white label requests.
✦ Development and expansion of the partnership network across Ukraine and the EU.
✦ Maintaining effective and ongoing communication with existing partners.
✦ Providing ad-hoc resources for IT projects through the partner network.
✦ Managing relationships with subcontractors (agreements, reporting, documentation, payment control).
✦ Working with and expanding the internal partnership database (updates, optimization, structuring).
✦ Exploring new collaboration formats and improving partnership workflows.
 

Requirements:

✦ 1+ year of experience in a similar role within the IT outsourcing/outstaffing sector.
✦ Strong understanding of the IT services market and partnership models.
✦ Excellent interpersonal and communication skills combined with teamwork experience.
✦ Strong networking and relationship-building skills.
✦ Sales and negotiation experience.
✦ Proactive mindset and ownership attitude.
✦ English — Upper-Intermediate or higher (written and spoken).
 

What we offer:

✦ Fixed salary + performance-based bonus system.
✦ 8-hour working day.
✦ 21 days of paid vacation + paid national holidays.
✦ 14 days of paid sick leave.
✦ Unlimited number of unpaid days off.
✦ 50% compensation for English courses.
✦ Up to 100% compensation for professional courses.
✦ Corporate events.
✦ Co-working compensation.
 

Recruitment stages:

✦ CV evaluation.
✦ Interview with HR (30 min).
✦ Technical interview (1 hour).
✦ Test task (optional).

Responsibilities:

• Design, develop, and maintain C++ applications and services that interact with embedded systems, specifically using Ardupilot/PX4 or other similar platforms.

• Collaborate with hardware engineers to integrate C++-based software with embedded systems and sensors, enabling seamless data exchange and device control.

• Identify, troubleshoot, and resolve software and hardware integration issues, ensuring high-quality, reliable, and performant solutions.

• Utilize Python for up to 20% of development, mainly for scripting, testing, and automation tasks.
 

Required Qualifications:

• 5+ years of experience in development with a focus on embedded systems, device programming, or hardware interfacing.

• Proven experience with Ardupilot/PX4 or similar platforms (e.g., Betaflight, iNav).

• Solid understanding of embedded systems, microcontrollers, and hardware-software interaction.

• Strong expertise in C++, with experience in performance optimization,

multithreading, and I/O operations in resource-constrained environments.

• Experience with Python for development, including scripting, testing, and automation, as well as its use in embedded systems.

• Experience with serial communication protocols (e.g., UART, SPI, I2C).

• Experience in Linux/Unix environments and tools (e.g., Git, SSH, command-line utilities).
 

Will be a plus:

• Experience with single board PCs (e.g., Raspberry Pi, Arduino, etc.).

• Knowledge of cloud technologies or IoT platforms (e.g., MQTT, AWS IoT, Google Cloud IoT).

• Soldering and engineering skills.

• Experience with 3D printing.

About UsWe are a fast-growing company in the AI Voice / performance-driven B2B space. We help businesses replace inefficient manual processes with scalable AI solutions that directly impact revenue.
Our product is already used by 20+ brands across 8+ GEOs, and we are scaling our sales engine aggressively.

Who We’re Looking ForWe’re looking for ambitious and results-driven Senior Marketing Manager who will fully own marketing end-to-end. This is a single marketer role: website, buyer personas, customer journey, content, LinkedIn, SEO. You own execution and outcomes.

About YouYou think in buyer personas, funnels, and revenue, not channels. You can turn strategy into concrete actions, pages, posts, and experiments. You are proactive, structured, and comfortable with fast-paced environment can self-organise and prioritize.

What Awaits You

• High-impact, senior-level ownership role
• Direct work with founders and CBDO
• Opportunity become a Head of Marketing
• No bureaucracy, fast iteration
• Clear priorities and performance expectations
• Opportunity to scale marketing from 0 → predictable inbound
• Resources to reach results
• Strong influence on sales pipeline and positioning

Responsibilities

• Own and execute end-to-end B2B marketing as a single marketer
• Own and continuously improve the company website as a revenue and conversion asset
• Implement in activities Buyer Personas, ICPs, and Customer Journeys
• Align website, content, and channels to each stage of the buying journey
• Build and manage founder-led LinkedIn personal branding
• Own and grow the company LinkedIn presence
• Execute SEO strategy hands-on with intent-based content
• Support sales with demand, credibility, and objection-handling content
• Track and report marketing impact on inbound, pipeline, and revenue

Requirements

• 5+ years in B2B marketing (services, SaaS, or performance-driven businesses)
• Strong experience with Buyer Personas and Customer Journeys in practice
• Proven ownership of a B2B website as a growth channel
• Hands-on SEO experience (not just coordination)
• Strong written English (content, positioning, messaging)
• Proven experience managing founders’ personal social profiles (LinkedIn)
• Experience working closely with sales or founders
• High level of autonomy and ownership

Nice to Have

• Experience in iGaming, AI, SaaS, or performance-based services
• Experience with LinkedIn Ads or Google Ads
• Basic CRO or conversion optimization background

What we offer 

• Fully remote work format and flexible working hours.
• Competitive salary pegged to USD.
• 24 days of paid vacation (sick leave, national, religious, and company holidays).
• A friendly communication culture and transparent processes.
• Dynamic work environment.
• Opportunities for professional development and career growth.
• No micromanagement — just trust, ownership, and freedom to experiment.

This is us

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX, and UI design, managed services, product development, and software development.

This is the job
Our client operates in the telecom domain, building enterprise-grade digital platforms and integration services. The project focuses on developing Backend-for-Frontend (BFF) services and core backend engines that enable seamless integration between frontend applications and large-scale enterprise systems such as CRM, billing, and CMS platforms.

You will work in a cloud-native AWS environment with modern DevOps practices, contributing to scalable, secure, and business-critical solutions.

This is you

• 5+ years of professional software engineering experience
• Strong backend development experience with Node.js and NestJS ( or or one of the following similar frameworks:
  Fastify, Express, Adonis)
• Solid knowledge of TypeScript
• Hands-on experience with Kubernetes, Docker, Helm
• Experience with AWS cloud services and Amazon EKS
• Infrastructure as Code with Terraform
• Experience building large-scale, business-critical applications
• Enterprise system integration (CRM, APIs, distributed systems)

• Strong understanding of algorithms and data structures

   

  This is your role

• Design and develop high-performance backend services using Node.js and NestJS
• Build and maintain RESTful APIs and microservices
• Develop Backend-for-Frontend (BFF) integration layers
• Integrate with enterprise systems (CRM, internal APIs, headless CMS)
• Implement Infrastructure as Code using Terraform
• Provision and manage environments via GitOps, CI/CD, Helm, ArgoCD, and Amazon EKS
• Participate in code reviews and Agile Scrum ceremonies
• Ensure secure, scalable, and reliable enterprise solutions

Inforce is a Software Development Company delivering high-quality IT solutions for international clients. We are looking for a Full Stack Developer with strong Shopify backend expertise to join our team.

Requirements:

• 1+ years of backend development experience
• Strong experience with Shopify (high-volume projects)
• Experience building custom Shopify apps and platform extensions (Checkout, Admin UI, Functions)
• Expert proficiency in Node.js and serverless architecture
• Experience with REST or GraphQL APIs
• Solid knowledge of Shopify theme development (Liquid, metafields, Storefront API)
• Upper-Intermediate English (B2+)
  
  Will be a plus:
• TypeScript or Rust
• Experience with scalable eCommerce systems
  
  Responsibilities:
• Develop and maintain scalable Shopify backend solutions
• Build custom apps and extend business logic
• Architect and integrate APIs
• Support Shopify frontend integrations
  
  We offer:
• Competitive salary
• Challenging eCommerce projects
• Career growth opportunities
• Paid sick leave & vacation
• Friendly team and flexible format

Grow your career with a team that values people as much as results!

Motion Designer (UA Creatives)
We are looking for a Motion Designer to create UA video creatives for paid channels: Meta, TikTok, YouTube.

Responsibilities:
- Creating and animating UA video creatives (6–30 sec)

- Animating text, UI elements, icons, simple characters

- Adapting creatives to different formats and placements

- Fast iterations and revisions based on feedback and performance metrics

- Close collaboration with marketing and the creative producer

Requirements
Must-have:

- After Effects — confident user (main working tool)

- Photoshop — basic level (asset preparation, minor edits)

- Understanding of UA creatives and performance-driven video

- Ability to create simple, clean, and highly readable animations

- Strong sense of timing, rhythm, and composition

- Working with text (hooks, CTAs, visual accents)

- Exporting videos for Meta / TikTok / YouTube

- Working with pre-made assets (PSD, Figma, footages)

Nice-to-have:

- AI tools for creative production (image/video generation, upscaling, voice, subtitles, etc.)

- Experience with mobile games or apps

- Understanding of A/B testing for creatives

- Basic editing and sound skills (cuts, transitions, music timing)

- Experience adapting creatives for different markets

We value
Data-driven mindset and creativity focused on results, not “beauty for beauty’s sake”

Ability to test ideas quickly and iterate without fear

Attention to detail and clean execution

Responsibility and realistic deadlines

We create technology that helps people explore the world, and we care about delivering real business value — not just writing code. We believe in ownership, proactive thinking, and strong collaboration across teams. Open communication, transparency, and the ability to actively participate in discussions and decisions are essential for us.

If you’re someone who takes initiative, enjoys sharing ideas, values teamwork, and wants to see how your work directly impacts users and the business — join our team.

Must have

• Strong knowledge of PHP 5.6+ and SQL (preferably MySQL)
• Experience with HTML, CSS, and jQuery
• Experience in working with at least one PHP framework
• Hands-on experience with Git
• Solid understanding of PSR standards and SOLID principles
• Experience in working with CLI and running scripts via cron jobs
• English level — Intermediate or higher to communicate with the client

Would be a plus

• Experience in maintaining and refactoring legacy codebases
• Experience in optimizing complex MySQL queries and related reports
• Experience in supporting WordPress websites (updates and content management)
• Strong AI user

Key responsibilities

• Support and optimization of a legacy project (PHP 5.6, jQuery)
• Optimization and maintenance of SQL queries (MySQL) and reports based on them
• Support of WordPress projects (updates and content management)

We offer

• competitive salary and bonuses
• an opportunity to work on interesting projects with a team of experts
• professional and personal growth through the company’s encouraging program
• feedbacks from supervisors and team members on a regular basis
• flexible working hours to provide you with life-work balance
• flexible vacation policy
• paid sick leaves
• English/Psychology classes

We are seeking a skilled IT Recruiter to manage full-cycle recruitment and assist our international clients in finding great talent. If you’re proactive, enjoy working in a fast-paced environment, and want to help drive recruitment success worldwide, this role is for you.

Responsibilities:

• Lead end-to-end recruitment, from sourcing top talent to final hiring.
• Engage candidates proactively across multiple platforms (LinkedIn, Djinni, DOU, etc.).
• Build and maintain a high-quality candidate pool.
• Conduct 5-6 interviews per day (30-45min depending on the vacancy).
• Prepare clear candidate profiles for clients (CVs and video introductions).
• Manage the technical assessment process (scheduling interviews, assigning test tasks, and providing feedback).
• Draft and present job offers, guiding candidates through negotiations.
• Maintain an accurate and up-to-date candidate database (CleverStaff).
• Collaborate with IT partner companies to source candidates and ensure the partner database is consistently updated and of high quality.
• Coordinate the signing of contracts with candidates and partners.
• Collaborate closely with Sales and Technical teams to streamline recruitment processes.

• Continuously improve recruitment strategies and processes to enhance efficiency and candidate experience.

   

Requirements:

• Strong Upper-intermediate English (both written and verbal, minimum B2 level).
• 1+ year of experience in full-cycle IT recruitment, ideally in outstaffing or staffing agencies.
• Proven experience sourcing candidates across multiple regions, including Europe, the USA, and LATAM.
• Familiarity with recruitment automation tools (Grinfi, PhantomBuster, etc.) would be a plus.
• Proactive and self-driven approach to recruitment.
• Ability to adapt quickly, stay flexible, and navigate shifting priorities in a dynamic environment.
• Eagerness to continuously learn, grow, and improve recruitment processes.

• Сlient-facing experience and strong relationship management skills are a plus.

   

What we offer:

• Fixed salary within our range + bonuses.
• Fully remote opportunity.
• Flexible schedule.
• Benefits (compensation for professional development, sports and physical health, mental health support, English classes).
• Constant improvement and learning opportunities (fast-paced environment, international clients only, Ukrainian and international candidates 50/50, and we work a lot with automation).

We’re looking for an Applied AI Engineer who combines strong ML fundamentals with the discipline of improving production AI systems through metrics, evaluation, and iteration.

This role is hands-on, product-focused, and collaborative with the AI platform lead.

The role in a nutshell

You’ll work on improving production AI systems through evaluation, experimentation, and system design.

A large part of the role involves:

• diagnosing failures in agent workflows
• designing evaluation metrics and KPIs
• improving system prompts and agent behavior
• running structured experiments and measuring impact

You won’t be working in isolation on research projects — you’ll be improving systems that real users depend on.

Rough responsibility breakdown:

• AI evaluation and KPI design — ~30%
• Prompt and agent system design — ~30%
• ML systems (recommendation, optimization, etc.) — ~30%
• Engineering integration — ~10%

What you’ll work on:AI evaluation and system quality

• Design evaluation strategies for LLM and agent workflows
• Create metrics and KPIs for AI system performance
• Build and maintain evaluation datasets
• Debug production AI failures systematically
• Compare system behavior against baselines

This is a core responsibility of the role.

Multi-agent AI systems

• Improve agent orchestration and workflows
• Diagnose failures across agent pipelines
• Refine system prompts and agent interactions
• Improve reliability, latency, and response quality

ML and AI systems

You’ll contribute to areas such as:

• Recommendation systems (ranking and personalization)
• Itinerary optimization and constraint-based planning
• LLM-based reasoning systems
• Optional: computer vision pipelines

Depth in one of these areas is more important than superficial experience in all of them.

Engineering collaboration

We use:

• Golang (primary production language)
• Python when necessary for ML workflows
• Postgres, Redis, and internal services

You don’t need to be a Go expert on day one, but you should be comfortable reading and modifying production code.

Backend engineers handle infrastructure-heavy service development — your focus is AI system behavior and correctness.

What we’re looking forMust-haves

Strong AI/ML fundamentals You understand the theory behind what you build and can choose appropriate methods for a problem.

Examples:

• evaluation metrics (precision/recall/F1/etc.)
• ranking and recommendation concepts
• embeddings and similarity
• experimentation methodology

Not required:

• academic publications
• advanced theoretical math
• large-scale model training experience

Evaluation-driven mindset You:

• think in metrics and baselines
• design experiments instead of guessing
• measure system improvements quantitatively
• debug failures methodically

This is the most important signal for the role.

Experience with LLM systems You’ve worked with:

• prompt design
• agent workflows
• evaluation of LLM outputs
• production LLM integrations

Ability to ship production systems You can:

• turn ideas into working systems
• iterate based on results
• balance exploration with delivery

Programming ability You’re comfortable writing production code in at least one language (Python, Go, or similar) and learning others when needed.

Strong signals (nice to have)

• Experience improving an AI system after deployment
• Recommendation systems or ranking experience
• Optimization or constraint-based systems
• Computer vision experience
• Experience building evaluation frameworks
• Golang experience
• Startup or small-team engineering experience

This role may not be a fit if

• You are looking for a research focused role without production deployment
• You rely heavily on frameworks without understanding fundamentals
• You’re uncomfortable working with partially-defined problems
• You prefer narrow specialization over product ownership

We are looking for an AI-First Golang Developer. We don’t need coders, we need Golang backend engineers who build features end-to-end using Claude Code.

Details:

• AI coding experience (mandatory!): experience with Claude Code — #1 priority, or experience with other agentic coding tools (Cursor, Windsurf, similar). Claude Code is what is used on the project
• Senior Golang Developer, 5+ years of experience, can potentially consider really strong candidates with 4 years of experience
• Strong proficiency in English (Upper-intermediate level or Advanced)
• Full-time
• Fully remote
• Start: ASAP, ideally, or can be discussed. 1 month’s notice will not work

What you’ll actually do:

• Own features end-to-end: from specs to deployment to fixing bugs
• Use Claude Code to generate Golang backend code
• Review AI output for quality and architectural fit
• Fix bugs to learn our codebase, then rapidly build new features
• Make quick decisions on what to build vs buy vs generate with AI
• Talk to customers when they report issues and ship fixes same day

Our stack:

• Backend: Go monorepo (no framework, 3+ services)
• Hosting: PaaS-managed containers, local setup fully mirrors production via Docker Compose
• Tools: Jaeger tracing, Betterstack (Logging, Alerting), Redis Asynq queue
• Databases: PostgreSQL, Redis
• AI tooling: Claude Code (mandatory)

Products you will build:

• Platform: data- and AI-focused features, internal tooling, agentic systems
• Integrations: API connections to supplier and business client platforms, data ingestion pipelines, LLM providers

You must have:

• Ownership mentality with a strive for elegantly simple, high-quality solutions
• Strive for max quality — you test your own work thoroughly since we have no QA team, everything you ship MUST work
• Product mindset — you care about WHY we’re building something
• Proven experience using Claude Code or similar agentic AI (Cursor, Windsurf)
• Strong Golang experience — you’ll review AI’s code in these, and you must understand how it works
• Passion for simple, secure, and observable systems that perform well even under massive load
• Ability to do on-call once in a while to help maintain our platform’s reliability & uptime
• Broad architectural knowledge of building modern full-stack applications
• Excellent spoken English and a good internet connection for daily video calls

You are a great fit if you:

• Get frustrated when development takes weeks instead of days
• You think in features and architecture, and not single lines of code
• Can spot subtle bugs in AI-generated code quickly
• You ship fast, but always verify it actually works
• Have shipped real products that customers actually use
• Think “how can AI build this?” as your first instinct

Red flags (don’t apply if):

• You’ve never used Claude Code or similar AI coding tools
• You’re a perfectionist who loves to code
• You need detailed specs before starting
• You see AI as a threat rather than leverage
• You’re outside the European timezone