Antipollution, a member of Vasileiadis Group of Companies (V Group), is a leading provider of environmental and waste management solutions across the Eastern Mediterranean, Egypt, and the Balkans. Operating in six main business pillars, including Port Reception Facilities, Emergency Response Services, Decontamination Services, Renewable Energy, Alternative Fuel Production from Waste, and Technology, we are committed to sustainability, innovation, and operational excellence.

As part of our digital-transformation agenda, we are looking for a hands-on Senior Cloud & Infra Engineer (Azure / IoT) to join the Technology & Innovation Department. You will design, build and operate Azure-centric cloud infrastructure and an Industrial/IoT ecosystem—covering cloud services, edge devices, wired/Wi-Fi/cellular networking and electronic integrations—while enabling secure, scalable and cost-efficient operations in line with industry best practices and compliance standards.

Role Overview:

You will act as the technical owner for our Azure and IoT environments, covering everything from device connectivity and data ingestion to cloud resources, networking, and storage. The role is 100 % hands‑on: you will plan, build, automate, troubleshoot, and improve systems yourself—while collaborating with peers in software, data, and operations.

Key Responsibilities:

About Signal Ocean:

Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, enables shipping professionals to securely handle, integrate, and assess intricate collections of private and public shipping data. Driven by advanced machine learning and artificial intelligence, our technology suite provides tailored, exclusive insights that supports our clients in improving performance and efficiency. Insights are delivered over web and mobile applications, as well as through a rich set of APIs and SDKs. Our backend architecture is abstracted to modularly offer deep analytics capabilities our solutions leverage or can be directly embedded in our client’s system topologies.

About the role

As the Signal Ocean Platform continues to grow, we’re expanding our engineering team. We're looking for a Senior Full Stack Engineer with experience in React, someone who is curious, proactive, and passionate about building high-quality digital solutions. Signal’s Software Engineers work closely with data science, design, product, and business analysis professionals to develop robust solutions for the highly entrepreneurial domain of shipping.

Technology Stack

About Signal Ocean:

Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, enables shipping professionals to securely handle, integrate, and assess intricate collections of private and public shipping data. Driven by advanced machine learning and artificial intelligence, our technology suite provides tailored, exclusive insights that supports our clients in improving performance and efficiency. Insights are delivered over web and mobile applications, as well as through a rich set of APIs and SDKs. Our backend architecture is abstracted to modularly offer deep analytics capabilities our solutions leverage or can be directly embedded in our client’s system topologies.

About the role

As the Signal Ocean Platform continues to grow, we’re expanding our engineering team. We're looking for a Senior Front-End Engineer with experience in React, someone who is curious, proactive, and passionate about building high-quality digital solutions. Signal’s Software Engineers work closely with data science, design, product, and business analysis professionals to develop robust solutions for the highly entrepreneurial domain of shipping.

Technology Stack

About METRO

METRO is one of Greece’s top employers, with over 11,500 employees. We operate My market, one of the country’s largest retail networks with 240 outlets, and are the leading company in wholesale consumer goods with 51 METRO Cash & Carry stores nationwide. As we expand our IT team, we are seeking a talented Mid/Senior Cybersecurity Engineer to join our dynamic environment and help shape the future of our infrastructure.

Are you a highly skilled and motivated Cybersecurity Engineer with a passion for safeguarding digital assets and innovative infrastructure?

If you thrive in a fast-paced environment and are eager to work in threat detection and mitigation across on-premise and cloud environments, we want you in #teammetro!

Your Role & Responsibilities

As a Cybersecurity Engineer, you will be a key technical expert, responsible for the design, implementation and operation of security solutions for on-premise, cloud, and hybrid infrastructures.  Your focus will include:

·         Firewall/WAF Infrastructure:

o    Manage and maintain firewalls / WAF such as Checkpoint, Cisco, Imperva and ensure optimal configuration and operation in cooperation with external partners.

o    Conduct regular vulnerability assessments and penetration testing.

 ·         EDR/NDR Infrastructure:

Продуктова команда SupportYourApp в пошуку досвідченого QA Engineer, що допоможе гарантувати стабільність, безпеку та якість відповідей штучного інтелекту. Ми працюємо над створенням B2B AI-рішень - чат-агентів та інструментів на основі ШІ. Працюємо зі складними сценаріями, де важлива точність, тон спілкування та відповідність інструкціям.

Звучить цікаво? Тоді наша команда чекає саме на тебе!

Далі більше 💛

Що ти будеш робити:

• Створювати та підтримувати тест-кейси, чеклисти, тест-плани;
• Проводити мануальне тестування нових фіч, AI-відповідей, інтерфейсу;
• Перевіряти коректність інтеграцій з LLM, векторними базами, API;
• Аналізувати edge cases, валідувати тон, логіку та точність відповідей моделі;
• Писати автотести (smoke / regression) — бажано Cypress або Playwright;
• Взаємодіяти з розробниками, ML-інженерами, Product Owner;
• Валідувати якість відповідей у продакшні (human feedback loop);
• Пропонувати та впроваджувати рішення для покращення якості коду.

Важливо та потрібно:

About Signal Ocean: Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, enables shipping professionals to securely handle, integrate, and assess intricate collections of private and public shipping data. Driven by advanced machine learning and artificial intelligence technologies, the platform provides tailored, exclusive insights that support our clients in achieving performance and efficiency.

About the role: At Signal, we are committed to finding people who are respectful, inclusive, and team players, embodying these values in every role.

What you will do in this role:

About Triaina (a Signal Venture):

Maritime transport, representing over 80% of global trade volume, faces substantial operational and financial risks. 

At Triaina, we develop advanced predictive models, leveraging proprietary data to empower bulk-shipping stakeholders with superior decision-making and trading performance.

Signal Ventures, the investment arm of Signal, is a specialized venture capital firm focused on supporting early-stage technology startups and entrepreneurs in the shipping, logistics, mobility, and commodities sectors. With a track record of over 15 investments, 3 incubation projects, and successful exits for notable companies like OilX and nuTonomy, Signal Ventures is at the forefront of the industry.

About the role: 

As a Quantitative Researcher, you’ll drive the full predictive-modeling pipeline – from data acquisition and feature engineering through model training, live deployment and risk management. You’ll shape our quantitative trading infrastructure, developing advanced models for shipping derivatives to support high-stakes decisions with immediate real-world impact.

The ideal candidate combines deep expertise in modeling time-varying stochastic processes and decision-making under uncertainty with an entrepreneurial mindset.

We welcome experienced candidates ready to lead research initiatives, mentor peers, and drive the discovery of new alpha-generating strategies.

Tiger Analytics is looking for an experienced Principal Data Scientist to join our fast-growing advanced analytics consulting firm. Our employees bring deep expertise in Machine Learning, Data Science, and AI. We are the trusted analytics partner for multiple Fortune 500 companies, enabling them to generate business value from data. Our business value and leadership has been recognized by various market research firms, including Forrester and Gartner.

We are looking for top-notch talent as we continue to build the best global analytics consulting team in the world. You will be responsible for:

About Signal Ocean:

Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, helps shipping and commodities professionals navigate their complex decision making. Driven by advanced machine learning and artificial intelligence, our technology suite provides tailored, exclusive insights that support our clients in achieving performance and efficiency. By securely handling and combining private and public shipping data flows, and applying advanced analytics, insights are delivered over web and mobile applications, as well as through a rich set of APIs and SDKs. Our backend architecture is abstracted to modularly offer deep analytics capabilities that are leveraged in the solutions that we offer or can be directly embedded in our client’s system topologies.

About the role: 

We are looking for a Software Development Lead to take ownership of one of our product teams within the Signal Ocean SaaS web application. This team focuses on building scalable, reusable components and data-driven features, enabling users to visualize complex shipping information via charts, graphs, tables, maps, and more.

A key upcoming focus is the Next-Gen Vessel List, which integrates multiple data sources and connects with our new Supply Trend capabilities.

Tiger Analytics is looking for experienced Senior Data Scientists to join our fast-growing advanced analytics consulting firm. Our consultants bring deep expertise in Data Science, Machine Learning and AI. We are the trusted analytics partner for multiple Fortune 500 companies, enabling them to generate business value from data. Our business value and leadership has been recognized by various market research firms, including Forrester and Gartner. We are looking for top-notch talent as we continue to build the best global analytics consulting team in the world.

As a Data Scientist, you will apply strong expertise through the use of machine learning, data mining, and information retrieval to design, prototype, and build next generation advanced analytics engines and services. You will collaborate with cross-functional teams and business partners to define the technical problem statement and hypotheses to test. You will develop efficient and accurate analytical models which mimic business decisions and incorporate those models into analytical data products and tools. You will have the opportunity to drive current and future strategy by leveraging your analytical skills as you ensure business value and communicate the results.

Key Responsibilities