Senior Frontend Engineer - Wallets-as-a-Service Platform

Location: Remote - Location: US or EU (remote-first, office optional). Ideally based in EST or as close to France or Paris is always the major preference.

Compensation: $160K - $220K

We are hiring an engineer to drive the user-facing side of our platform, building the backbone of blockchain wallet infrastructure for the next financial era. This is a high-impact role requiring deep expertise in modern frameworks, cross-platform development, and strong UX instincts. We need a rigorous builder who can translate complex requirements into fast, intuitive, and trustworthy financial tools.

This is not a narrow frontend role; you will move fluidly between polished user experiences and the developer tools that make them possible. You will own features end-to-end, delivering business-grade software that makes complex financial workflows effortless for developers, administrators, and end-users. Speed and security must be balanced with clean architecture and reliable performance.

Responsibilities:

Mercier Consultancy MD is searching for a Polish Speaking Digital Trust and Safety Specialist to join our dedicated team. In this critical role, you will be responsible for fostering a safe online environment for our users by monitoring digital content, managing safety inquiries, and enforcing community standards.

Key Responsibilities

• Monitor user-generated content and interactions to identify potential violations of our safety policies and community guidelines.
• Conduct thorough investigations into reported incidents, evaluating evidence to recommend appropriate actions.
• Collaborate with cross-functional teams to enhance and develop safety policies that support a trustworthy digital community.
• Create and present detailed reports on safety incidents, trends, and recommendations to inform management decisions.
• Stay updated on the latest developments in digital safety to continuously improve our protocols.
• Engage with users to promote safety awareness and provide guidance on navigating online risks.

Requirements

About the Role
The Experience Lead oversees and guides the end-to-end user experience of advanced digital products. This role combines leadership, strategy, and hands-on design direction to ensure solutions are human-centered, ethical, and impactful. You will champion the voice of the user, align cross-functional teams, and set the direction for how users discover, interact with, and build trust in digital solutions.

Key Responsibilities

• Define the holistic user experience vision and roadmap, ensuring experiences are intuitive, trustworthy, and scalable.
• Lead and mentor a multidisciplinary design team (UX, UI, Research, and Content) to deliver cohesive, high-quality experiences.
• Establish and enforce design principles and frameworks for transparency, error handling, and user control.
• Partner with Product Managers, Engineers, Data Scientists, and Business Stakeholders to align experience goals with product and business strategies.
• Oversee experience architecture across complex product ecosystems, including information structure, navigation, and interaction flows.
• Guide the creation of prototypes and usability testing to validate and refine experiences based on real user feedback.
• Define and track UX success metrics such as adoption, satisfaction, trust, and usability.

Requirements

Lead Mobile Engineer - Fintech/Blockchain

Location: Remote - Location: US or EU (remote-first, office optional). Based in EST time zone preferably and as close to France, Paris is always the major preference.

Compensation: $140K - $220K

Our client is hiring a Lead Mobile Engineer to drive the user-facing side of our secure, next-generation financial platform. This remote-first role is focused entirely on mobile, requiring you to design, build, and refine iOS and Android applications, craft intuitive cross-platform interfaces, and shape the mobile SDKs that developers rely on. This is a critical opportunity to turn complex financial requirements into simple, trustworthy workflows while owning projects end-to-end.

As the Lead Mobile Engineer, you will set the technical direction for the user-facing mobile experience, balancing fintech-grade UX with bank-grade security and reliability. You will be responsible for bringing complex requirements into production quickly and rigorously.

Responsibilities:

Location: New York, NY (100% On-site)

Compensation: $150,000 - $200,000 (Base Salary) + Competitive Equity

We are a rapidly growing, well-funded technology company operating at the intersection of AI, data, and life sciences. Our mission is to accelerate the path for patients to receive life-changing therapies by simplifying insurance, affordability, and pharmacy supply chain complexities. We are seeking a high-impact Analytics Engineer to build the data foundation that powers how we operate, measure, and grow.

As an Analytics Engineer, you'll be an owner of our data infrastructure, ensuring that clean, trustworthy, and decision-grade data is available across the company. This is a highly autonomous, cross-functional role that directly impacts company growth and client success.

If you join, you will:

Mercier Consultancy MD is seeking an enthusiastic and detail-oriented Digital Trust and Safety Analyst who is fluent in both Danish and English. In this crucial role, you will support our mission of creating safe and trustworthy online environments for users. Your expertise will help monitor, investigate, and ensure our platforms adhere to the highest safety standards.

Key Responsibilities

• Monitor user interactions and content for compliance with community safety guidelines and policies.
• Conduct comprehensive investigations into reported safety concerns, utilizing data analysis to determine appropriate actions.
• Collaborate with cross-functional teams to develop and refine policies that enhance online security.
• Generate detailed reports and insights based on investigations and safety data to guide stakeholders.
• Stay informed about the latest trends in digital safety and emerging threats to proactively mitigate risks.
• Educate users and stakeholders on best practices concerning digital safety and security.

Requirements

Mercier Consultancy MD is seeking a skilled Digital Trust and Safety Specialist fluent in both Czech and English. In this vital role, you will be responsible for ensuring the safety and integrity of our online platforms. You will help protect users from malpractices and maintain a trustworthy environment by monitoring content, handling incidents, and implementing safety measures.

Key Responsibilities

• Monitor user interactions and content on our platforms to identify and address potential violations of community standards.
• Conduct thorough investigations into reported issues, analyzing evidence and determining appropriate actions.
• Collaborate with cross-functional teams to develop policies and practices that enhance digital trust and safety.
• Prepare and present detailed reports on safety incidents and insights to leadership teams for strategic decision-making.
• Stay updated on digital safety trends, threats, and best practices to proactively enhance security measures.
• Engage with users to inform them about safety protocols and promote community awareness regarding digital safety.

Requirements

Mercier Consultancy MD is on the lookout for a meticulous Czech Speaking Digital Trust and Safety Analyst to join our dedicated team. This role is critical for ensuring that our online platforms remain safe and trustworthy for users. As a Digital Trust and Safety Analyst, you will be responsible for monitoring, analyzing, and responding to potential safety and security issues related to our digital services.

Key Responsibilities

• Monitor user-generated content and interactions on our platforms to identify potential risks and violations of community guidelines.
• Conduct thorough investigations into reported incidents, analyzing data to determine the appropriate actions necessary.
• Collaborate with technical and security teams to develop and implement policies and procedures that enhance digital safety.
• Develop reports and insights based on findings to inform stakeholders and improve overall platform safety.
• Stay updated on emerging threats and digital safety trends to proactively address potential vulnerabilities.
• Engage with users and stakeholders to educate them about best practices in digital safety and security.

Requirements

Schedule: Monday–Friday, 9am–6pm ARG

About eJam

At eJam, we scale innovative consumer brands through performance-driven digital marketing. Our Conversion Rate Optimization (CRO) team plays a central role in this mission, running high-volume A/B tests across landing pages, advertorials, checkout flows, offers, and retention funnels.

Every day, we optimize to drive higher conversions, stronger subscription take rates, and increased customer lifetime value (LTV).

We are seeking a CRO Analyst & Experiment Coordinator to analyze, validate, and report on our tests, ensuring every experiment produces accurate, reliable insights. This person will safeguard our testing process by preventing invalid test setups, spotting extra variables, and ensuring data integrity.

This is a critical role for someone who loves numbers, thrives on precision, and understands how small testing errors can cost a company significant revenue.

We are hiring on behalf of our client, a Personal Driver to the CEO. In addition to providing safe and timely transportation, you will also manage the vehicle fleet—overseeing day-to-day garage operations, scheduled maintenance, cleaning, inspections, and ensuring all vehicles are in optimal condition.

Primary duties - Personal driver:

• Safely and timely drive the employer to local destinations as instructed 
• Safely drive the employer’s relatives, visitors, business partners and associates to and from places authorized by the employer
• Ensure that the car is always clean by regularly taking it for wash
• Carry out routine inspection on the car to ensure that it is always in great condition
• Report promptly for any issues (mechanical, electrical, body, damages) identified on the vehicles under his responsibility
• Consider different routes, check climate, and traffic reports to decide the best time to travel and the best route to take
• Keep a travel log to record locations travelled to, travel time, and work hours
• Personal Driver for the Shareholder in accordance to Shareholder's schedule and needs. 
• Daily care (i.e. arrange for cleaning, maintenance and repairs) of all the personal vehicles of the Shareholder

Secondary duties - Head of Garage: