Principal Security Engineer - Blockchain Wallet Infrastructure

Location: Remote - Location: US or EU (remote-first, office optional). Must be in the US, not Canada or in the European Union. France or Paris or as close as possible, always preferred

Compensation: $220K - $300K

Join a stellar team of leaders and experts in blockchain technology, cryptography, and infrastructure to build the backbone of blockchain wallet infrastructure for the next financial era. We are hiring a Principal Security Engineer to lead security design and development across our entire platform. Reporting directly to the CISO, you will set the strategy to protect our high-stakes financial systems, fix vulnerabilities, and keep client wallets safe.

This is a strategic and highly technical role spanning the full security lifecycle. You will make security part of every layer of the stack, from architecture design to incident response. Beyond defense, you will champion secure development practices, mentor engineers, and represent the company's security posture to clients and the wider community.

Responsibilities:

Welcome to PXGEO

PXGEO is an innovative marine geophysical service provider combining the strengths of ocean bottom and towed streamer seismic data acquisition techniques to deliver seamless subsurface imaging for a sustainable future.

What’s the role?

The position will support day‑to‑day project accounting, financial reporting, and cost control activities—gaining valuable real‑world experience across accounts payable, receivables, capital expenditures, and project financials.

This role is ideal for recent graduates who are detail‑oriented, eager to learn, and excited to grow within a dynamic, international environment. This position will provide exposure to global marine operations and large-scale seismic projects while receiving hands-on training in ERP systems, project accounting, and financial controls along with the opportunity to collaborate with multidisciplinary teams across finance, operations, and offshore crews to build a strong foundation for future careers in accounting, financial analysis, project control, or operations finance. The selected candidate will also have the opportunity to experience other sub-departments within finance.

Key deliverables include:

Project Accounting & Financial Operations

About the Job

Join Excelya, where Audacity, Care, and Energy define who we are and how we work. We believe in creating bold solutions and fostering an inclusive environment where collaboration and individual growth go hand in hand.

This role is an exciting opportunity to contribute to a dynamic, ambitious team in Clinical Operations, particularly in the field of Oncology. As a Clinical Research Associate specializing in this area, you will play a crucial role in ensuring the successful conduct of oncology clinical trials, while supporting innovative cancer therapies that make a real difference in patients' lives.

Main Responsibilities:

Senior/Lead Smart Contract Engineer - Web3 User Acquisition Platform

Location: Remote - US (EST Preferred)

Compensation: $150K - $200K

We are a leading web3 user acquisition platform that has powered onboarding for over 500 protocols since 2021, facilitating over 500 million transactions and serving over 3 million users on 40+ chains. Our platform is infrastructure for major players like Coinbase, Uniswap, and Solana. Backed by $21M in total funding and with a successful native token launched in 2024, we are seeking a highly experienced Senior/Lead Smart Contract Engineer to take ownership of our protocol architecture and security.

You will lead the design and implementation of our smart contract infrastructure for both core and new initiatives. This is a critical, high-ownership role where you will drive protocol architecture, security, and optimization across multiple chains supporting millions of users. Your expertise will be essential in maintaining the integrity and gas efficiency of our high-volume systems.

What You'll Be Doing:

Protocol Lead - Rule Enforcement for Regulated Blockchains

Location: remote - north and South America and the EU

Compensation: $180K - $220K

We are building a platform that sets the standard for how regulated blockchain applications enforce transaction rules directly at the smart contract layer. Our system empowers teams to create modular, programmable policies (like AML/CFT checks or off-chain collateral requirements) enforced with cryptographic guarantees before a transaction executes on-chain. We are seeking a Protocol Lead to own the entire smart contract suite, driving robust, scalable risk management for real-world use cases.

As the Protocol Lead, you will have full ownership of the architecture, development, and maintenance of our core smart contract suite. You will be the team's blockchain subject matter expert, defining security best practices, managing audits, and building tooling for seamless integration. This role requires a balance of hands-on coding, security leadership, and cross-ecosystem research (EVM and non-EVM).

Key Responsibilities:

Trust & Compliance Officer - Blockchain Wallet Infrastructure

Location: Remote - Must be in the European Union (remote-first, office optional). France/ Paris or as close as possible, is always preferred.

Compensation: $95K - $165K

Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of blockchain wallet infrastructure for the next financial era. We are hiring a Trust & Compliance Officer to manage our security frameworks and global regulatory requirements, ensuring we meet the highest standards of trust, resilience, and compliance across various financial and digital asset regulations worldwide.

Reporting to the CISO, this role demands both precision and adaptability. You will be the central figure for all trust, security, and compliance matters, designing and enforcing compliance programs, leading audits, and acting as the main point of contact for clients and regulators. You will also integrate compliance requirements into product architecture and support clients in meeting their own regulatory obligations.

Responsibilities:

Business Operations & Compliance Manager - Decentralized Finance

Location: Remote - Preference for NYC - Will accept Remote USA working EST hours

Compensation: $129K - $150K

We build technology that makes markets safer and more accessible in the decentralized finance (DeFi) space. Our risk management systems, oracles, and AI models secure billions in value and are trusted by leading protocols like Aave, GMX, dYdX, and others. We are seeking a talented Business Operations & Compliance Manager to join our team and help shape the future of decentralized finance, reporting directly to the VP of Business Operations.

You will be the key owner of our global compliance and security posture, designing and implementing policies to reduce risk and support sustainable growth in a high-growth technology environment. This role is highly cross-functional, requiring you to partner with technical, business, and legal teams to embed operational excellence across the organization.

Responsibilities:

About the Job

Join Excelya as a Quality & CSR Coordinator, where we value Audacity, Care, and Energy in everything we do. In this role, you will have the unique opportunity to oversee quality management systems and contribute to our Corporate Social Responsibility initiatives, promoting excellence and sustainable practices within our organization.

Your focus will include ensuring compliance with quality standards and regulations while actively participating in CSR programs that align with Excelya's vision for creating lasting positive impacts in our community.

In direct contact with internal teams, suppliers and management, you will structure, lead and improve our Quality Management System while deploying concrete actions in favor of the environment, social and ethics.

In this context, your missions will be as follows:

On the Quality side, you will participate in the management:

• Updating quality documents (procedures, records, etc.)
• Qualification of suppliers and monitoring of their commitments
• Internal audits (from planning to reporting)
• Gap management and CAPAs, with a real root cause analysis approach
• Preparation of external audits (customers, ISO, etc.)
• Monitoring and analysis of quality KPIs to detect drifts and propose solutions

On the CSR side, you will contribute to:

The Project (Field) Engineer will deliver assigned work packages with attention to detail, participating in their allocated team for the successful execution of project or tender.

The Project (Field) Engineers are expected to:

·     Pursue innovation and improvement in engineering & design practices.

·     Pursue the concept of 'Design for safety, function and practicality / economy of fabrication', in accordance with the DOF Engineering Manual, project BoD, Client expectations, budget and schedule.

·     Understand and apply industry codes / standards required to support specific project or tendering requirements

- including AS / DNV / API / IMCA / AISC etc.

·     Ensure all technical deliverables are concise, legible, accurate and in compliance with DOF standards & templates.

·     Ensure all work is completed in accordance with the DOF Engineering Manual.

Requirements

TASKS AND RESPONSIBILITIES

Key Tasks:

Project (Field) Engineers are expected to carry out the following work tasks:

·     Assemble and review all design inputs required to support specific project or tendering works.

·     Own and be responsible for delivery of discrete work packages as allocated by your functional and administrative managers, on time and in budget

Join Mercier Consultancy MD as a Dutch Speaking Energy Advisor and embark on an exciting career with paid relocation to Sofia! This position is ideal for individuals passionate about sustainable energy solutions and customer service. As an Energy Advisor, you will play a crucial role in helping clients navigate their energy needs, providing expert advice and tailored solutions to enhance energy efficiency.

Key Responsibilities

• Assist clients in understanding their energy requirements and provide effective solutions to optimize energy consumption.
• Conduct thorough energy assessments and audits to identify areas for improvement.
• Develop and deliver clear presentations to clients about energy products and services.
• Maintain strong relationships with customers, ensuring ongoing support and satisfaction.
• Stay updated on the latest energy trends, regulations, and technologies to offer informed advice.
• Collaborate with internal teams to facilitate the implementation of energy solutions and services.

Requirements