Senior Rust Engineer - On-Chain Security Infrastructure

Location: Remote - Europe

Compensation: $165K - $200K

We are building a Credible Layer—a step-level improvement for on-chain security designed to safeguard the crypto industry and restore credibility after billions were lost to hacks. We are creating an on-chain protocol and off-chain infrastructure that enables protocols to enforce security rules for every transaction. Backed by world-class investors, we are seeking a Senior Rust Engineer to work on bleeding-edge infrastructure at the heart of our mission.

You will play a crucial role in shipping cutting-edge features that extend the EVM (Ethereum Virtual Machine) to enable security rules to be checked after every state transition. This is a high-impact, deeply technical role requiring expertise in performance optimization and low-level systems programming within a collaborative, fast-iteration environment.

Key Responsibilities:

Full Stack Engineer - Payments & FinTech Web Applications

Location: Remote - Based in EST or GMT+1

Compensation: $120K - $150K

We are a high-growth technology company building a robust FinTech and payments platform. We are seeking an experienced Full Stack Engineer with strong product sense and deep technical expertise to design and build the secure, scalable, and high-performing web applications that power our platform. This role requires translating complex backend financial systems into intuitive, reliable user experiences.

You will own the development lifecycle of web applications from design through release, working across the full stack with an emphasis on the frontend user experience. You will collaborate closely with backend teams, ensuring that all features prioritize performance, security, and scalability. You will be expected to treat UI components and APIs as products, maintaining high standards for code quality and architectural clarity.

What You'll Do:

Protocol Backend Engineer - Stablecoin Platform

Location: North American-based candidate only

Remote | Full-time

Compensation:  $180K - $220K

Join a stablecoin platform for builders, providing a superior digital-dollar building block that allows developers to create and customize their own stablecoins in minutes. This platform enables businesses to monetize digital dollar use cases and maintain control over their money tech stack without operational heavy-lifting, offering features like custom branding, compliance behaviors, and yield distribution mechanics.

We are hiring on behalf of a company who is seeking an experienced Protocol Backend Engineer. In this role, you will enhance the growing set of $M Extensions projects, support partners' technical teams, improve existing products, and create and maintain comprehensive documentation.

Key Responsibilities

Protocol Integration Engineer - Stablecoin Platform

Location: Preference for EST-based candidates

Remote | Full-time

Compensation: $170K - $180K

Our client is a pioneering stablecoin platform designed specifically for builders and developers. The platform empowers users to create customized stablecoins in minutes by extending a superior digital-dollar building block. This framework allows businesses to monetize digital dollar use cases and maintain full control over their financial technology stack—customizing branding, compliance behaviors, and yield distribution mechanics—without the burden of operational heavy-lifting.

The organization is seeking an experienced Protocol Integration Engineer to join its growing team. This individual will play a vital role in enhancing a growing set of extension projects, providing technical support to partner engineering teams, improving existing products, and maintaining comprehensive technical documentation.

Key Responsibilities

Growth Associate, X (Twitter) - Layer 1 Blockchain Performance

Location: New York (Hybrid)

Compensation: $150K - $200K

We are the first parallelized layer 1 blockchain, setting a new standard in performance and scalability by re-writing the most widely adopted execution environment in Web3. Our organization drives adoption, supports the community, and partners with developers to bring groundbreaking applications to life. We are seeking a Growth Associate, X (Twitter) to spearhead the development of our identity and narrative across global social platforms.

You will be responsible for defining and executing the strategic development of our brand's voice and reach, focusing heavily on platforms like X (Twitter). This role demands a blend of strategic thinking, creative instinct, and a deep understanding of crypto and meme culture to deliver innovative and engaging content that expands our community and mindshare.

Key Responsibilities:

Lead Sales Executive - Cross-Border FinTech/Blockchain

Location: Remote - Dubai

Compensation: $160K - $180K

We are a rapidly growing technology company in the FinTech sector focused on delivering next-generation infrastructure, with a strong presence in Blockchain and Cybersecurity. We are seeking a Lead Sales Executive to drive revenue and manage end-to-end deal execution within a key territory. This role requires a high-activity, autonomous "maverick" who can operate independently with remote support and thrive in an agile startup environment.

You will be responsible for the entire sales cycle, from pipeline generation through final negotiation and procurement. This includes deep prospecting, gathering complex technical and commercial requirements, and executing channel and partner strategies to drive incremental revenue. You will be a critical representative of the company in the market, driving brand awareness at industry events and feeding back vital customer intelligence to Product and Marketing teams.

Key Responsibilities:

Chief Compliance Officer (CCO) - Global Payments Infrastructure

Location: Remote - US

Compensation: $ Competitive

We are building a platform dedicated to enabling drastically faster, cheaper, and more reliable transactions for businesses in emerging markets, working toward a vision of frictionless global commerce. We are looking for a Chief Compliance Officer (CCO) to take full, end-to-end ownership of our compliance function. This critical leadership role requires both strategic vision and tactical execution with a strong founder's mindset.

As CCO, you will be the ultimate owner of compliance strategy, execution, and team-building across global markets. You must be equally comfortable defining licensing roadmaps with leadership and diving into the deepest details of operational compliance. Your primary mission is to design robust compliance frameworks that mitigate risk while successfully enabling rapid growth and expansion across emerging markets.

Key Responsibilities:

Mercier Consultancy MD is seeking a dedicated Polish Speaking Customer Services Solutions Consultant to join our exceptional team. In this role, you will be instrumental in providing outstanding client support, addressing inquiries, and designing custom solutions to enhance customer satisfaction. If you are passionate about delivering top-notch service and have excellent communication skills, we want to hear from you!

Key Responsibilities

• Serve as the primary contact for Polish-speaking clients, addressing their needs and responding to inquiries promptly.
• Identify client challenges and propose tailored solutions to improve their overall service experience.
• Provide necessary training and support to clients, enabling them to maximize our service offerings.
• Collaborate with cross-functional teams to ensure successful implementation of service solutions.
• Evaluate client feedback and satisfaction, ensuring that any issues are proactively resolved.
• Keep abreast of product developments and industry trends to provide informed support to clients.

Requirements

Mercier Consultancy MD is delighted to offer an incredible opportunity for a Hungarian Speaking Player Support Specialist for Riot Games. This role is designed for those who are not only passionate about gaming but also excel in providing exceptional player support. As a key member of our team, you will assist Hungarian-speaking players with their queries, ensuring they have an enjoyable gaming experience with Riot's titles.

Key Responsibilities

• Provide dedicated support to Hungarian-speaking players through various communication channels.
• Assist players with inquiries regarding game features, technical issues, and account management.
• Resolve player issues efficiently to maintain a high level of satisfaction and engagement.
• Document interactions accurately to help identify trends and improve support services.
• Collaborate with development and community teams to relay valuable player insights and feedback.
• Stay updated on game developments, events, and industry trends to provide informed support.

Requirements

Mercier Consultancy MD is delighted to offer an exciting opportunity for a Dutch/Flemish Speaking Agent for Eneco, allowing you to work remotely from the picturesque country of Greece. In this position, you will be responsible for providing exceptional customer support to Dutch/Flemish-speaking clients, helping them navigate Eneco's energy products and services.

Responsibilities

• Engage with customers through phone, email, and chat in Dutch/Flemish, providing them with accurate information and support for their energy needs.
• Assist customers with account inquiries, billing issues, and service-related questions in a timely and friendly manner.
• Troubleshoot problems concerning products and services, ensuring all solutions are effectively communicated to the customers.
• Document each customer interaction in the CRM system to maintain high standards of service quality.
• Work collaboratively with other teams to resolve escalated issues and enhance the overall customer experience.
• Stay informed about Eneco's product offerings and energy-related news to better assist customers.

Requirements