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:

Role Purpose:

The Cloud DevSecOps Engineer is responsible for designing, implementing, and securing cloud-based infrastructure and CI/CD pipelines. The role ensures seamless automation, robust security integration, and efficient monitoring of systems across OCI and GCP environments to enable secure, scalable, and high-performing applications.

Key Responsibilities:

1. CI/CD Pipeline & DevSecOps

• Design, build, and secure CI/CD pipelines using GitHub Actions.

• Integrate automated security testing (SAST/DAST) using SonarQube and related tools.
• Implement and manage GitOps workflows for continuous delivery using ArgoCD.

2. Cloud Infrastructure & Automation

Responsibilities: 

• Design, develop, execute and maintain comprehensive test plans and test cases based on strong understanding of the products 

• Perform functional, regression, performance, and user acceptance testing. 

• Identify, report, and track software defects and bugs. 

• Collaborate closely with developers, product owners, and other stakeholders to understand requirements and ensure high-quality deliverables. 

• Continuously improve the QA process and contribute to the overall product development lifecycle. 

Requirements

• Bachelor’s degree in Computer Science and Engineering, or information technology 

• 5+ years of experience in software quality assurance in the Tech industry 

• Strong understanding of software QA methodologies, tools, and processes. 

• Proficient in writing clear, concise, and comprehensive test plans and test cases. 

• Experience in Agile/Scrum development processes. 

• Excellent problem-solving skills and attention to detail. 

• Strong communication and collaboration skills. 

Preferred Qualifications: 

About us

With a long history of operating and investing in the shipping industry, Danaos manages one of the largest independently owned fleet of modern, large-size containerships. Our dedication to innovation, safety, efficiency and environmental responsibility has helped us forge our reputation as the leading provider of containership management services in the world.

Danaos has been widely recognized for its operational performance, technological innovation, high operational standards and commitment to sustainability. This recognition and technology to management, strong work ethic and sustainable development, the awards Danaos has received are the recognition of the innovations the company has developed in every aspect of its activity.

At Danaos we have made environmental sustainability a priority as we look to the future. We constantly employ the highest operating standards on board to ensure an ethical, safe and pollution free environment for everyone - our people, the community and the marine life all over the world.

As an IT Auditor, you will:

At Quento, the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

Quento Technologies seeks a highly motivated and experienced Security Testing Specialist to prepare and execute analysis of the applications from a security point of view. At Quento, we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Our high-performing, dynamic, and collaborative environment fosters professional growth at every stage. As a Security Testing Specialist, you will be responsible for including an analysis of the available documentation source code, of the architecture, and penetration testing.

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for an Experienced Product Security Engineer in the United States.

This role is ideal for a seasoned security professional who is passionate about building secure, scalable, and trusted products. You will work directly with engineering and product teams to embed security throughout the product lifecycle—from design to deployment. In this position, you’ll play a crucial role in shaping secure architecture, conducting threat modeling and risk assessments, leading security testing, and mentoring teams on best practices. If you thrive in a fast-paced, collaborative environment and want to make a meaningful impact on how products are secured at scale, this opportunity is for you.

Accountabilities:

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Software Quality Engineer in the United States.

This role is ideal for a hands-on, detail-oriented quality engineer with a solid foundation in software engineering and a passion for automation and process improvement. You'll be responsible for designing and executing test strategies that ensure the stability, performance, and security of browser-based and desktop applications. Working closely with cross-functional teams, you will integrate QA best practices throughout the development lifecycle, contribute to automated testing pipelines, and help raise the bar for quality across the board. This is a fast-paced environment where your analytical thinking, problem-solving, and collaborative mindset will be key to success.

Accountabilities:

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Senior Cloud Security Engineer in the United States.

We are seeking an experienced and proactive Senior Cloud Security Engineer to join a fast-growing, innovative security team. In this role, you will design and implement advanced security measures that protect cloud-based systems and customer data, while enabling scalable development practices. You’ll work cross-functionally to identify vulnerabilities, improve detection strategies, and support secure DevOps processes. If you’re passionate about application and cloud security, love solving complex challenges, and want to make an impact in a tech-driven environment, this opportunity is for you.

Accountabilities:

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Software Engineer in Test III in India.

As a Software Engineer in Test III, you will lead the design and development of automated test frameworks using Java to ensure the quality and reliability of software products. You will collaborate with cross-functional teams, including software engineers, product managers, and QA testers, to deliver high-quality software solutions. Your expertise in test automation will help streamline testing processes, integrate automated tests into CI/CD pipelines, and mentor junior team members. You will also be responsible for evaluating and improving testing methodologies and contributing to the continuous improvement of the software development lifecycle.

Accountabilities:

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Software Quality Engineer in the United States.

In this role, you will be responsible for ensuring the quality and reliability of software products by performing thorough testing of browser-based applications and desktop clients. You will work closely with development teams to develop and execute manual and automated tests, identify and resolve defects, and enhance overall QA processes. Your expertise will contribute significantly to the continuous improvement of the software development lifecycle and product delivery.

Accountabilities: