Smart Contract Engineer (Rust) - High-Performance DeFi Infrastructure

Location: PST-CAT preference

Compensation: Competitive

We are building the next generation of Decentralized Finance (DeFi) liquidity infrastructure on the Solana blockchain. We are solving a critical industry problem where reliance on over-collateralized lending leads to inefficient capital use, fragmented systems, and unnecessary liquidation risks.

Our solution introduces under-collateralized borrowing, programmable margin accounts, and composable on-chain strategies ("Recipes"), all built with high-performance Rust smart contracts. We are redefining how liquidity moves in DeFi: faster, safer, and more capital-efficient.

We are looking for a highly capable Smart Contract Engineer (Rust) to join our core engineering team and shape the technical backbone of our protocol. You will design, build, and optimize Rust-based smart contracts that power our DeFi infrastructure, working closely with product and protocol teams to create scalable, secure, and innovative financial primitives.

As a core contributor, you will take full ownership of your work, from concept and research to mainnet deployment and maintenance.

At Quento, the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

At Quento, we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Quento Technologies seeks a highly motivated and experienced IT Python Software Engineer.

Responsibilities:

Join Mercier Consultancy MD as a Swedish Business Developer in the Travel Industry and immerse yourself in the vibrant culture of Athens! This exciting opportunity is perfect for individuals with a passion for travel and a drive to create innovative business solutions within the travel sector. In this role, you will play a crucial part in expanding our client base and promoting our services to Swedish-speaking clients.

Key Responsibilities

• Identify and establish relationships with potential clients in the travel industry across Swedish-speaking markets.
• Develop and implement effective business development strategies to promote our travel services and solutions.
• Engage with clients to understand their specific travel needs and tailor solutions that enhance their experiences.
• Conduct market research to stay informed about industry trends, competitor activity, and customer preferences.
• Prepare and deliver compelling sales presentations that effectively communicate the value of our offerings.
• Collaborate with internal teams to ensure seamless service delivery and support for clients.
• Achieve and exceed sales targets, contributing to the overall success of the company.

Requirements

Join Mercier Consultancy MD as a German Client Care Consultant for our innovative online payment platform, located in the vibrant city of Athens. In this role, you will be at the forefront of ensuring our German-speaking clients receive outstanding support and guidance as they engage with our cutting-edge payment solutions. We are seeking enthusiastic individuals who are eager to make a positive impact in the world of online payments.

Key Responsibilities

• Deliver high-quality customer support to German-speaking clients via emails, phone calls, and live chats.
• Facilitate client onboarding to ensure a smooth transition to our payment platform and address any initial queries.
• Proactively identify issues and provide effective solutions to enhance the user experience.
• Educate clients on the features and best practices of using the platform.
• Maintain comprehensive records of client interactions and feedback for continuous improvement.
• Work closely with internal teams to help develop and revise support materials tailored to our clients' needs.

Requirements

Mercier Consultancy MD is on the lookout for a knowledgeable Croatian Customer Search Engine Consultant to join our Athens team. In this dynamic position, you will play a crucial role in helping clients enhance their online presence through effective search engine strategies. Your expertise in digital marketing and SEO, combined with your ability to communicate fluently in Croatian, will enable you to provide tailored solutions that meet our clients' needs.

Key Responsibilities

• Analyze client websites to assess current search engine performance and identify areas for improvement.
• Develop and implement customized SEO strategies for clients, ensuring alignment with their business objectives.
• Conduct comprehensive keyword research to discover opportunities for higher search rankings.
• Engage with clients in Croatian to understand their goals, address concerns, and provide guidance on SEO initiatives.
• Track and report on website performance metrics, adjusting strategies as needed based on data findings.
• Keep abreast of the latest trends in SEO and digital marketing to offer innovative solutions to clients.

Requirements

Senior Data Scientist – DeFi Economic Risk & Security

Location: Remote - Preference is in Europe to overlap 5hours with EST timezone

Compensation: $130K - $150K

Join a pioneering company that provides the first automated, on-chain economic security system for crypto protocols. Our platform is trusted by leading DeFi protocols, collectively securing and managing billions of dollars in assets, by utilizing world-class custom EVM simulations to optimize risk management and capital efficiency. This is a high-impact role at the intersection of quantitative finance, data science, and decentralized technology.

As a Senior Data Scientist, reporting directly to the Head of Economic Risk & Strategy, you will be a critical driver of our modeling capabilities and data insights across the decentralized finance ecosystem. You will lead innovative research to understand market actor behavior and model these dynamics within our advanced simulation platform.

Your Mission & Responsibilities:

We are OB Streem, a leading end-to-end logistics provider delivering intelligent and innovative solutions in Southeast Europe. Our rich heritage stems from decades of expertise with ORBIT (Orphee Beinoglou International Transports) and Makios Logistics drives our forward-thinking approach in providing excellence in service.

We believe every journey begins with a commitment—to our clients and our team. With a deep-rooted passion and a drive to redefine industry standards, we strive to create seamless logistics solutions that empower businesses and individuals alike. Our mission is to navigate the complexities and challenges of global logistics, ensuring flexibility, reliability, efficiency, and an unwavering focus on customer satisfaction.

As part of the OB Streem family, you will contribute to maintaining a legacy of excellence while being empowered to innovate, collaborate, and make a meaningful impact every day. If you share our vision of transforming logistics into an experience of trust and reliability, we invite you to embark on this exciting journey with us.

We are looking for a Quality Compliance Manager to join our Quality & Excellence Department in our offices located in Aspropyrgos.

We are OB Streem, a leading end-to-end logistics provider delivering intelligent and innovative solutions in Southeast Europe. Our rich heritage stems from decades of expertise with ORBIT (Orphee Beinoglou International Transports) and Makios Logistics drives our forward-thinking approach in providing excellence in service.

We believe every journey begins with a commitment—to our clients and our team. With a deep-rooted passion and a drive to redefine industry standards, we strive to create seamless logistics solutions that empower businesses and individuals alike. Our mission is to navigate the complexities and challenges of global logistics, ensuring flexibility, reliability, efficiency, and an unwavering focus on customer satisfaction.

As part of the OB Streem family, you will contribute to maintaining a legacy of excellence while being empowered to innovate, collaborate, and make a meaningful impact every day. If you share our vision of transforming logistics into an experience of trust and reliability, we invite you to embark on this exciting journey with us.

We are looking for a Business Analyst to join our Finance Department in our offices in Elefsina.

Mercier Consultancy MD is excited to offer a fantastic opportunity for a Spanish Sales Representative to join a leading software company based in the vibrant city of Athens, Greece. This role is perfect for energetic and results-driven individuals who are fluent in Spanish and have a passion for technology and sales. As a Sales Representative, you will be integral in promoting innovative software solutions to a diverse clientele, helping them enhance their businesses through technology.

Key Responsibilities

• Identify and develop relationships with potential clients through various outreach methods including calls, emails, and networking.
• Effectively communicate the features and benefits of the software products, guiding customers to make informed decisions.
• Achieve and exceed individual sales targets while contributing to the overall team success.
• Keep abreast of industry trends and competitor actions to adjust sales strategies accordingly.
• Work cross-functionally with marketing and customer support teams to provide an excellent customer experience.
• Participate in continuous training to ensure up-to-date knowledge of products and market developments.

Requirements

Mercier Consultancy MD is seeking a dedicated Portuguese Customer Care Agent to join our team in the thriving gaming industry based in Athens. In this role, you will provide exceptional service to our Portuguese-speaking customers, helping them navigate our gaming platforms while ensuring a positive and enjoyable experience. This is a fantastic opportunity to be part of a dynamic and innovative company within a rapidly growing sector.

Key Responsibilities

• Respond to customer inquiries in Portuguese through multiple communication channels, including phone, email, and live chat.
• Assist customers with account management, gameplay questions, and technical troubleshooting.
• Provide information on promotions, features, and services available on our gaming platform.
• Document and track customer interactions in our CRM system for quality assurance and reporting.
• Handle customer complaints with professionalism and provide effective solutions to enhance satisfaction.
• Collaborate with team members and other departments to streamline processes and improve customer experience.

Requirements