Lead/Senior Front-End Engineer (DeFi Infrastructure on Solana)

Location: Remote - PST-CAT preference

Compensation: Competitive

We are building the next generation of Decentralized Finance (DeFi) liquidity infrastructure on Solana. Our platform solves major industry problems by moving beyond traditional over-collateralized lending. We enable under-collateralized borrowing, programmable margin accounts, and composable strategies, all through one seamless application, unlocking capital efficiency and reducing risk.

We are seeking a foundational hire, a Lead/Senior Front-End Engineer, to own and drive the frontend of our flagship platform. This role will shape the entire user experience, technical architecture, and future frontend engineering culture.

As the go-to person for all things frontend, you will be responsible for defining the technical vision and delivering a world-class, high-performance user experience for advanced DeFi users.

Mercier Consultancy MD is thrilled to offer a unique opportunity for Norwegian speakers seeking employment in Greece. Join us for a range of positions that not only promise rewarding career paths but also provide fully paid relocation to Greece. This is a chance to immerse yourself in a vibrant culture while building your professional life in a beautiful Mediterranean setting.

Key Responsibilities

• Engage in various roles tailored to your skills, including customer support, sales, marketing, and more.
• Utilize your fluency in Norwegian to communicate effectively with clients and teams.
• Contribute to team projects that support company growth and enhance customer satisfaction.
• Participate in training programs to develop your professional skills and knowledge.
• Foster a positive work environment through collaboration and effective communication.

Requirements

Mercier Consultancy MD is thrilled to announce exciting opportunities for Italian-speaking professionals looking to advance their careers in Greece. If you are seeking a dynamic work environment with the added benefit of a fully paid relocation package, this is the perfect opportunity for you! Join our team and experience the vibrant culture of Greece while utilizing your language skills in a professional setting.

Key Responsibilities

• Provide exceptional support and customer service in Italian across various departments.
• Communicate effectively with clients or customers to address inquiries, resolve issues, and provide guidance.
• Document interactions meticulously to ensure quality assurance and feedback loops.
• Collaborate with team members to enhance processes and improve the overall customer experience.
• Stay informed about industry trends, products, and services to assist customers effectively.
• Participate in training and development opportunities to continuously improve skills.

Requirements

Join Mercier Consultancy MD as a German Customer Support Representative for the leading booking site, where you will have the flexibility of working remotely from beautiful Greece. This position is perfect for individuals who are enthusiastic about helping customers and are looking for an opportunity to work in a dynamic online environment.

Key Responsibilities

• Provide exceptional customer support to German-speaking clients through various communication channels, including phone, email, and live chat.
• Assist customers with inquiries related to bookings, services, and platform usage.
• Handle customer complaints and issues efficiently, aiming for resolution and customer satisfaction.
• Document customer interactions accurately in our CRM system for tracking and quality assurance.
• Work closely with cross-functional teams to ensure seamless service delivery and enhance customer experience.
• Stay updated on product offerings and booking trends to provide informed support and recommendations.

Requirements

Mercier Consultancy MD is excited to announce an opening for a Czech Social Media Content Moderator in our Athens office. This role is essential for overseeing user-generated content across popular social media platforms, ensuring a positive and safe online environment for our Czech-speaking community. As a key member of our moderation team, you will contribute significantly to maintaining community standards and engagement.

Key Responsibilities

• Moderate and assess social media content in Czech to ensure it complies with established community guidelines.
• Engage with users through comments and direct messages, providing timely and supportive responses.
• Identify and report any content that violates community standards or displays inappropriate behavior.
• Analyze community interactions to generate insights that help improve moderation strategies.
• Work in collaboration with marketing and social media teams to enhance engagement and content strategies.
• Stay informed about the latest trends in social media and best practices in content moderation.

Requirements

Senior Data Engineer - AI-First Fintech Platform

Location: Remote - Fully Remote - Across Europe

Compensation: $120K - $140K

We are a rapidly growing fintech and crypto platform undergoing an AI-first transformation. We are seeking a strategic, high-impact, and high-ownership Senior Data Engineer to build the foundational data infrastructure that powers our cutting-edge AI features.

You will report directly to the CTO and work closely with our Machine Learning (ML) team to consolidate and govern our data ecosystem (including PostgreSQL, Kafka, BigQuery, and GCS) into a clean, governed, and ML-ready platform. Your contributions will directly enable critical AI functionality across our product suite.

This role is responsible for the end-to-end design, implementation, and governance of our core data platform, ensuring high performance and readiness for ML applications.

DevOps Engineer - Global Fintech & Digital Money Platform

Location: Remote - They would prefer people in NYC but will accept people in Europe or Puerto Rico

Compensation: $180K - $250K

Join a lean and mighty team of passionate builders and veteran founders, backed by top-tier investors in fintech and crypto. We are building a cutting-edge platform at the intersection of real-world payments and digital money, empowering the next generation of financial products globally.

We are looking for a DevOps Engineer to deliver massive impact by owning and scaling our critical infrastructure. You will be a key driver of the technical roadmap and architectural decisions for a product rapidly scaling to millions of end-users.

The DevOps Engineer will play a critical role in managing, scaling, and securing our multi-cloud infrastructure, ensuring rapid, reliable deployments for a high-performance financial product.

Lead Blockchain Payments Engineer - Fiat Ramps & Financial Infrastructure

Location: London

On-site | Full-time

Compensation: Competitive

Our client is an elite team of builders operating at the intersection of fintech and high-scale crypto infrastructure. As a high-growth software organization, the company is responsible for developing the technology behind some of the largest crypto social networks and digital asset launchpads globally. The organization is defined by a philosophy of extreme talent density, rapid iteration, and technical ownership.

The Lead Blockchain Payments Engineer (Fiat Ramps) will serve as a core architect of the firm's financial infrastructure. This role is responsible for designing and scaling the services that power seamless fiat-to-crypto flows, real-time risk decisioning, and immutable financial records. Based in London, this is a full-time, in-person position for an engineer who thrives in high-throughput, low-latency environments and is passionate about building the future of global value transfer.

Key Responsibilities

Payment Orchestration & Integrations

Trader Analyst - High-Performance On-Chain Market Maker

Location: Remote - Must be able to work PST hours - so preference is US/South America & New Zealand based candidates.

Compensation: $75K - $100K

We are hiring on behalf of our client, a stealth, on-chain, Solana-focused low-cap market maker: a private, tight-knit team obsessed with performance, precision, innovation, and absolute excellence. They operate fast, stay quiet, and execute aggressively. If you thrive in an elite environment where growth is earned, not given, you will fit in. The client is seeking a Trader Analyst to operate at the intersection of execution trading, liquidity strategy, and client advisory. This high-impact role balances direct client communication with hands-on, high-speed trading execution in low-cap crypto assets.

The Trader Analyst will be responsible for balancing key client-facing communication, strategic analysis, and disciplined trading execution in a fast-paced, 7-day market environment.

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.