Senior Solidity Engineer

Employment: Full-time via MLabs
Engagement: Contracted to a UAE-based enterprise client
Location: Remote (Eastern Europe / MENA / India preferred)

MLabs is hiring an experienced Senior Solidity Engineer to support a large-scale financial technology program for a UAE-based client. You will work on smart contract development within a blockchain ecosystem that integrates enterprise financial systems with distributed ledger technology. This role requires strong Solidity expertise and a solid understanding of secure smart contract architecture in production environments. You will collaborate closely with backend engineers (Java), blockchain infrastructure teams, and cross-functional stakeholders to deliver secure and scalable solutions.

Employment: Full-time via MLabs
Engagement: Contracted to a UAE-based enterprise blockchain / fintech client
Location: Remote (Eastern Europe / MENA / India preferred)

MLabs is hiring a Senior Frontend Engineer (Web3) to support a large-scale blockchain and financial technology program for a UAE-based enterprise client.

You will build secure, high-performance web applications that integrate directly with blockchain infrastructure. This role combines modern frontend engineering with decentralized technologies, requiring strong expertise in React and Web3 integrations. The ideal candidate has hands-on experience integrating smart contracts, wallet providers, and on-chain data into production-grade web applications.

Responsibilities

• Develop and maintain Web3-enabled frontend applications using React and TypeScript
• Integrate smart contracts using Web3 libraries (e.g., ethers.js, web3.js)
• Implement wallet connectivity and transaction flows
• Handle on-chain data fetching and real-time state updates
• Ensure secure and reliable interaction between frontend and blockchain layers
• Optimize performance and user experience in decentralized environments
• Collaborate closely with smart contract, protocol, and backend teams

Requirements

Senior AI Data Scientist

Location: Remote - USA, Europe, Israel

Compensation: $130K - $150K

We are hiring on behalf of our client, a leading financial technology firm building the infrastructure for safer, more accessible global markets. Their risk management systems, oracles, and AI models secure hundreds of billions in assets and process trillions in transaction volume across major protocols. They recently launched a cutting-edge financial intelligence platform that transforms complex market data into actionable insights, bringing institutional-grade intelligence to a global audience.

They are seeking a Senior AI Data Scientist to lead the design, evaluation, and evolution of the agentic systems behind their financial intelligence platform. This role sits at the intersection of LLMs, financial data, and decision systems. You will own the logic behind how their models reason over data, how agents coordinate and make decisions, and how they rigorously measure quality, correctness, and risk in production AI workflows. You’ll work closely with product, engineering, and research teams to move from experimentation to reliable, scalable AI systems that operate under real-world financial constraints.

Key Responsibilities:

Mercier Consultancy MD is excited to announce a position for a Dutch Speaking Customer Service Agent for PayPal, offering the opportunity to work in Greece. In this role, you will be part of a dynamic team dedicated to providing exceptional support to Dutch-speaking clients utilizing PayPal's services. Your effective communication and problem-solving skills will play a vital role in ensuring customer satisfaction.

Responsibilities

• Assist Dutch-speaking customers through phone, email, and chat with inquiries related to PayPal services and accounts.
• Provide accurate information regarding transactions, billing, and account management.
• Address and resolve customer complaints promptly and professionally.
• Document all customer interactions in the CRM system, maintaining quality and consistency in service delivery.
• Work collaboratively with internal teams to ensure a seamless customer experience and adherence to company policies.
• Stay informed about PayPal's offerings, updates, and security measures to provide accurate guidance.

Requirements

Staff Mobile Engineer (React Native)

Location: Fully remote in Europe or India

Compensation: $60K - $70K

We are a fast-scaling financial technology startup operating at the intersection of Prediction Markets, AI, and Blockchain.

Our platform is currently processing $200M in annualized volume and experiencing explosive growth of 100% week-over-week. We are backed by elite institutional investors, including a $500M AUM digital asset fund and a premier AI/Crypto accelerator with a sub-1% acceptance rate. We are looking for a world-class Staff Mobile Engineer to own our iOS experience and build a high-stakes trading environment where performance is the primary product feature.

As a Staff Mobile Engineer, you will be the architectural lead and primary owner of our iOS trading experience. This is a product-critical role where your code sits directly between our users and live, real-money markets. You will work in a high-bandwidth environment alongside the CEO, COO, and founding engineering team to ship a mobile experience that rivals the best in TradFi.

Key Responsibilities:

Mercier Consultancy MD is excited to present an amazing opportunity for Dutch Speaking Customer Service Representatives at a prestigious FinTech Company, based in the beautiful surroundings of Greece. This role is ideal for individuals who are passionate about financial technology and dedicated to providing exceptional customer support. As a representative, you will assist clients in Dutch, addressing their inquiries and ensuring a seamless experience with the company's services.

Key Responsibilities

• Handle customer inquiries related to FinTech services, account management, and financial transactions via phone, email, and chat in Dutch.
• Provide accurate information about financial products, pricing, and features available to customers.
• Assist customers with technical issues related to the FinTech platform and ensure effective resolutions.
• Resolve customer complaints efficiently, ensuring high levels of satisfaction and loyalty.
• Document all customer interactions in the CRM system for accurate record-keeping and follow-up.
• Work collaboratively with the finance and technical teams to improve service delivery.
• Stay informed about industry trends and regulatory changes to ensure compliance and provide relevant advice.

Requirements

Mercier Consultancy MD is excited to announce a wonderful opportunity for Spanish Speaking Customer Service Representatives for a leading Payment Solutions Provider, based in Greece. This role is ideal for individuals who are enthusiastic about financial technology and dedicated to delivering exceptional customer support. As a representative, you will assist customers in Spanish, addressing their inquiries and helping them navigate payment solutions.

Key Responsibilities

• Handle customer inquiries related to payment solutions, transactions, and account issues via phone, email, and chat in Spanish.
• Provide accurate information on payment processing, fees, and related services.
• Assist customers with transaction inquiries and troubleshooting any issues they may encounter.
• Resolve customer complaints efficiently, ensuring a positive customer experience.
• Document all customer interactions and inquiries in the CRM system for accurate tracking and follow-up.
• Collaborate with internal teams to improve service delivery and address customer needs proactively.
• Stay informed about industry trends and payment solutions to provide informed assistance.

Requirements

Mercier Consultancy MD is excited to present an outstanding opportunity for Italian Speaking Customer Service Representatives for a leading FinTech Company, with the chance to work in vibrant Greece. This role is tailored for individuals who have a keen interest in financial technologies and are dedicated to delivering exceptional customer support. As a representative, you will assist clients in Italian, providing guidance and assistance regarding various financial services and products.

Key Responsibilities

• Manage customer inquiries related to FinTech products and services, including account setup, transactions, and troubleshooting via phone, email, and chat in Italian.
• Offer clear and concise information about financial products, helping customers understand their features and benefits.
• Assist customers with issues related to their accounts and transactions, ensuring swift resolutions.
• Resolve any complaints and feedback effectively, aiming for high levels of customer satisfaction.
• Document all customer interactions diligently in the CRM system for accurate record-keeping.
• Collaborate with internal teams to improve service delivery and enhance the overall customer experience.
• Stay informed about financial regulations, products, and industry trends to provide relevant assistance.

Requirements

Quantitative Trading Analyst (Risk Architecture)

Location: Porto, Portugal

Hybrid | Full-time

Compensation: $150K - $175K

Our client is a high-growth financial technology firm on a mission to democratize access to global markets. By leveraging blockchain technology, the organization is replacing traditional, opaque brokerage models with a transparent, permissionless trading stack. This infrastructure allows users with digital wallets to trade stocks, commodities, currencies, and digital assets with full transparency and verifiable, auditable code. Having secured over $27.9M in funding from premier venture capital firms—including General Catalyst, Jump, LocalGlobe, and Susquehanna (SIG)—the company is positioned at the forefront of the Decentralized Finance (DeFi) movement.

The organization is seeking a Quantitative Trading Analyst to architect and upgrade the risk management engine securing the protocol. This role serves as the critical bridge between Traditional Finance (TradFi) derivatives and DeFi market structures. The mandate involves rigorously quantifying protocol risk and designing systems that facilitate high-leverage trading of real-world assets while mathematically ensuring protocol solvency.

Key Responsibilities

Reinforcement Learning (RL) Engineer

Location: New York (Office)

On-site | Full-time

Compensation: Competitive

Our client is an elite development firm and a high-growth software company responsible for building the infrastructure behind the world’s largest crypto social networks and digital asset launchpads. Operating at the frontier of decentralized finance, the organization is composed of a mission-driven group of builders who prioritize speed, technical excellence, and talent density.

The organization is seeking a Reinforcement Learning (RL) Engineer to take end-to-end ownership of an RL-driven trading agent. This individual will manage real capital to increase trading volume and user participation within a high-velocity memecoin ecosystem. This is a high-stakes role designed for a "single-owner" expert who can bridge the gap between sophisticated modeling and live financial production. The successful candidate will transition existing heuristic-based systems toward learning-based approaches while enforcing rigorous risk parameters in a 24/7 global market.

Key Responsibilities