Infrastructure System Engineer
Status
Paris, France
Full time
Hybrid
Compensation is not specified
Role
Systems Engineer
Description
We aim to democratize and safeguard digital assets worldwide. Join us in this endeavor.
Established in 2014, Ledger serves as the global hub for digital assets and Web3. With headquarters in Paris and Vierzon, and additional offices in the UK, US, Switzerland, and Singapore, Ledger employs over 550 professionals. The team works collectively to create and deliver a range of products and services enabling individuals and enterprises to securely purchase, store, exchange, grow, and oversee crypto assets. The Ledger hardware wallets have reached more than 5 million units sold across 180 countries.
At Ledger, we uphold values that shape our identity: Practicality, Boldness, Commitment, Trust, and Transparency. Discover more about our journey and ethos through our Origins video.
To facilitate our expanding enterprise, Ledger seeks a System Engineer for the Infrastructure Team in France who is passionate about high availability systems, monitoring, and automation, and eager to collaborate in a diverse, international setting.
Responsibilities:
- Design, configure, and manage systems infrastructure encompassing core services, internal tools, monitoring solutions, and bare metal servers
- Research, pilot, integrate and deploy new technologies and infrastructure solutions
- Support the source code version management, continuous integration tools, and package management solutions
- Precisely estimate system work packages within the infrastructure domain
- Serve as an escalation point for systems delivery design or setup
- Act as a key escalation point for platform remedies
- Handle system incidents and problems resolution
- Monitor, optimize, and troubleshoot hardware or software incidents and problems
- Plan and implement security measures to safeguard data, software, and hardware
- Configure, monitor, and maintain backup and replication routines, and strategize disaster recovery readiness
- Maintain up-to-date documentation of Ledger's infrastructure systems
Required Skills:
- Minimum 10 years of experience in Linux system administration and management within a high availability ecosystem
- Proficiency in virtualization and containerization environments like K8s, Docker, Proxmox
- Hands-on experience with configuration management tools such as Ansible, SaltStack, or Terraform
- Familiarity with system monitoring tools, particularly Prometheus
- Knowledge of encryption and PKI technologies
- Self-driven, motivated, and autonomous
- Effective communication and persuasion skills
- Honest, realistic, and adept at creative problem solving, critically assessing solutions, and implementing business needs
Preferred Qualifications:
- Experience in Public Cloud deployments on AWS
- Understanding of application transport and network infrastructure protocols
- Knowledge of data center operations or network devices is beneficial
Perks and Benefits:
- Stock options to share in the company's success
- Hybrid work policy for flexibility
- Annual company outings and social events
- Comprehensive health insurance coverage
- Personal development, coaching, and fitness opportunities
- Five weeks of paid leave per year, national holidays, and RTT days
- Access to high-performance office equipment and gadgets
- Transportation reimbursement
- Employee discounts on all products
Ledger is an equal opportunity employer with a commitment to diversity and inclusion.
Skills Required
Ledger
Website
www.ledger.comCompany size
Not specified
Location
United States
Description
Not specified
Status
George I
Game Studio Hiring: Full-Stack, Mobile & 3D Web Developers
Part time
Remote
About Us
We are an established game studio developing HeroWarrior, a Unity-based web battle game that has been in active development for three years. Our project is supported by GameWorld (Netherlands) and we're currently preparing for version 2.0 with an expanded development team.
Following strategic restructuring in 2022, we're now building a distributed team across Europe and seeking talented developers to join our long-term project.
Open Positions
We are actively recruiting for the following roles:
UI/UX Designer
Specialization in gaming interface design
Experience with Unity UI systems preferred
Full-Stack Developers
Backend and frontend development for web platform
Experience with game-related web services preferred
Mobile Developers
Native mobile app development
Cross-platform experience valued
Unity Developers
Gameplay mechanics implementation
3+ years Unity experience required
3D Web Developers
WebGL and Three.js expertise
Browser-based 3D rendering experience
hat We Offer
Project Commitment: We're seeking long-term partnerships, not short-term contractors. This is an opportunity to grow with an established project backed by industry partners.
Compensation Structure:
Flexible payment options: hourly rates, monthly retainers, or milestone-based compensation
Rates negotiable based on experience and role
Initial evaluation period followed by standard employment terms
Work Environment:
Remote-friendly distributed team
Collaborative development process
Opportunity to work on a commercially-backed game project
Application Requirements
Please submit the following:
Portfolio/Resume - Detailed work history and relevant projects
Rate Expectations - Your preferred compensation structure and rates
Code Samples - GitHub repository, portfolio links, or previous work examples
Availability - Expected start date and commitment level
Evaluation Process Acknowledgment - Confirmation of willingness to complete a brief technical assessment
Ideal Candidates
Demonstrated passion for game development
Strong technical skills in relevant technologies
Experience working on long-term projects
Collaborative mindset and professional communication
Interest in building innovative gaming experiences
Next Steps
We are moving quickly to fill these positions. Qualified candidates will be contacted within one week for initial discussions and technical evaluation.
To apply, please send your complete application materials to vlad@gameworldcompany.com
We are an established game studio developing HeroWarrior, a Unity-based web battle game that has been in active development for three years. Our project is supported by GameWorld (Netherlands) and we're currently preparing for version 2.0 with an expanded development team.
Following strategic restructuring in 2022, we're now building a distributed team across Europe and seeking talented developers to join our long-term project.
Open Positions
We are actively recruiting for the following roles:
UI/UX Designer
Specialization in gaming interface design
Experience with Unity UI systems preferred
Full-Stack Developers
Backend and frontend development for web platform
Experience with game-related web services preferred
Mobile Developers
Native mobile app development
Cross-platform experience valued
Unity Developers
Gameplay mechanics implementation
3+ years Unity experience required
3D Web Developers
WebGL and Three.js expertise
Browser-based 3D rendering experience
hat We Offer
Project Commitment: We're seeking long-term partnerships, not short-term contractors. This is an opportunity to grow with an established project backed by industry partners.
Compensation Structure:
Flexible payment options: hourly rates, monthly retainers, or milestone-based compensation
Rates negotiable based on experience and role
Initial evaluation period followed by standard employment terms
Work Environment:
Remote-friendly distributed team
Collaborative development process
Opportunity to work on a commercially-backed game project
Application Requirements
Please submit the following:
Portfolio/Resume - Detailed work history and relevant projects
Rate Expectations - Your preferred compensation structure and rates
Code Samples - GitHub repository, portfolio links, or previous work examples
Availability - Expected start date and commitment level
Evaluation Process Acknowledgment - Confirmation of willingness to complete a brief technical assessment
Ideal Candidates
Demonstrated passion for game development
Strong technical skills in relevant technologies
Experience working on long-term projects
Collaborative mindset and professional communication
Interest in building innovative gaming experiences
Next Steps
We are moving quickly to fill these positions. Qualified candidates will be contacted within one week for initial discussions and technical evaluation.
To apply, please send your complete application materials to vlad@gameworldcompany.com
Payment in Crypto
VaultChain
Assistant in Financial Technology and Trading Strategies (with Training)
Berlin, Germany
Berlin, Germany
Part time
Remote
Description
We are offering an opportunity to join our team and learn about cross-market trading strategies, focusing on identifying price differences of assets across multiple platforms. This role provides hands-on experience in financial technology, data analysis, and trading support.
As part of this position, you will:
Gain practical knowledge of market analysis and trading workflows
Learn how to recognize and evaluate opportunities across different platforms
Develop your skills in risk management and decision-making
Work with a mentor who will guide you step by step through the learning process
What we provide:
Comprehensive training program designed for beginners
Ongoing mentorship and professional support
Flexible schedule (approx. 1 hour a day required for study and practice)
Remote work setup with the possibility to grow into a larger role over time
This is a part-time, entry-level opportunity suitable for candidates with little or no prior experience. What matters most is your willingness to learn and apply new knowledge in practice.
Compensation: Competitive monthly pay structure with opportunities for progression as skills develop
We are offering an opportunity to join our team and learn about cross-market trading strategies, focusing on identifying price differences of assets across multiple platforms. This role provides hands-on experience in financial technology, data analysis, and trading support.
As part of this position, you will:
Gain practical knowledge of market analysis and trading workflows
Learn how to recognize and evaluate opportunities across different platforms
Develop your skills in risk management and decision-making
Work with a mentor who will guide you step by step through the learning process
What we provide:
Comprehensive training program designed for beginners
Ongoing mentorship and professional support
Flexible schedule (approx. 1 hour a day required for study and practice)
Remote work setup with the possibility to grow into a larger role over time
This is a part-time, entry-level opportunity suitable for candidates with little or no prior experience. What matters most is your willingness to learn and apply new knowledge in practice.
Compensation: Competitive monthly pay structure with opportunities for progression as skills develop
Сrypto.com
Junior Operations Analyst
Hong Kong
Hong Kong
Full time
Hybrid
We are seeking a proactive and detail-oriented Junior Operations Analyst to provide support for the Institutional Sales team. This position requires a balance of operational tasks, reporting, and process enhancement, ideal for someone who excels in structured processes and data-driven problem-solving.
As a Junior Operations Analyst, you will be responsible for managing client account requests, reporting, data integrity checks, and creating Salesforce reports, Tableau dashboards, and process automations to optimize efficiency. Working closely with the Senior Operations Manager, you will contribute significantly to ensuring seamless client support and scaling operational standards.
Responsibilities:
Conduct operational tasks such as processing client account requests, maintaining Salesforce data integrity, and recording operational information accurately.
Produce and share regular institutional reports, and develop Salesforce reports and Tableau dashboards to monitor client trading performance and operational metrics.
Identify workflow inefficiencies, suggest automation solutions, maintain existing automation tools, and update processes while collaborating with various teams.
Work closely with account managers, compliance, data, finance teams to resolve operational inquiries and support the Senior Operations Manager on key projects.
Qualifications:
Experience: 1–3 years in operations, business analysis, or sales support (experience in fintech/finance preferred).
Skills: Strong organizational skills, ability to manage multiple tasks under deadlines, proficiency in Excel/Google Sheets, Salesforce reporting, and familiarity with Tableau.
Attributes: Interest or experience in workflow automation, strong analytical mindset, attention to detail, excellent communication skills, and ability to collaborate effectively.
Benefits:
Opportunity to grow in operations and analytics within the crypto industry.
Exposure to institutional trading operations, client support, and data-driven decision-making.
Clear career development path towards mid-level operations management or business analytics.
Work in a collaborative, fast-paced team environment where your contributions have a direct impact.
Should there be a need for further information on data processing procedures, feel free to reach out to us.
As a Junior Operations Analyst, you will be responsible for managing client account requests, reporting, data integrity checks, and creating Salesforce reports, Tableau dashboards, and process automations to optimize efficiency. Working closely with the Senior Operations Manager, you will contribute significantly to ensuring seamless client support and scaling operational standards.
Responsibilities:
Conduct operational tasks such as processing client account requests, maintaining Salesforce data integrity, and recording operational information accurately.
Produce and share regular institutional reports, and develop Salesforce reports and Tableau dashboards to monitor client trading performance and operational metrics.
Identify workflow inefficiencies, suggest automation solutions, maintain existing automation tools, and update processes while collaborating with various teams.
Work closely with account managers, compliance, data, finance teams to resolve operational inquiries and support the Senior Operations Manager on key projects.
Qualifications:
Experience: 1–3 years in operations, business analysis, or sales support (experience in fintech/finance preferred).
Skills: Strong organizational skills, ability to manage multiple tasks under deadlines, proficiency in Excel/Google Sheets, Salesforce reporting, and familiarity with Tableau.
Attributes: Interest or experience in workflow automation, strong analytical mindset, attention to detail, excellent communication skills, and ability to collaborate effectively.
Benefits:
Opportunity to grow in operations and analytics within the crypto industry.
Exposure to institutional trading operations, client support, and data-driven decision-making.
Clear career development path towards mid-level operations management or business analytics.
Work in a collaborative, fast-paced team environment where your contributions have a direct impact.
Should there be a need for further information on data processing procedures, feel free to reach out to us.
Сrypto.com
Head of Custody Security
Dallas, USA
Dallas, USA
Full time
Hybrid
Responsibilities
Conduct, devise, and execute testing of security controls pertaining to identity management, key management, and infrastructure in network and cloud setups.
Aid client assurance tasks, including addressing Requests for Proposals (RFPs), Requests for Information (RFIs), and Due Diligence Questionnaires (DDQs).
Recognize and assess trends in client inquiries and offer feedback to internal teams for enhancing documentation and control preparedness.
Perform security due diligence and continuous monitoring for Web3/blockchain vendors, involving evaluating their control maturity, scrutinizing SOC reports and security documents, and identifying residual risks.
Coordinate external audit activities by managing walkthroughs, collating evidence, and tracking responses.
Pinpoint and analyze gaps in existing and new processes, devise and chart remediation suggestions until completion (e.g., onboarding procedure).
Develop and sustain comprehension of pertinent financial regulatory security requirements and ensure control alignment.
Research and distribute information security best practices, emerging threats, and mitigation techniques with internal teams.
Evaluate and suggest modern security tools, automation, and technologies to elevate overall security stance.
Assess blockchain network or protocol upgrades for their potential security implications on the platform.
Requirements
A minimum of 8 years' relevant experience in security assurance, audit, compliance, or cloud security engineering.
Demonstrated proficiency in testing and validating security controls across IAM, key management, and network/cloud environments.
Firm understanding of Identity and Access Management (IAM) principles.
Knowledge of cryptographic key management, HSMs, and KMS systems.
Comprehensive understanding of cloud and network security architecture and configuration.
Proven track record in supporting SOC 1, SOC 2, ISO 27001, PCI DSS, or equivalent external audits and assessments.
Exposure to major cloud platforms like AWS, GCP, Azure, and infrastructure-as-code.
Experience in creating client assurance materials, RFP/RFI/DDQ responses, and evidence documentation.
Familiarity with blockchain platforms or digital asset custody systems is beneficial.
Capable of independent work and performing under pressure.
Excellent oral and written communication skills.
Pragmatic and solution-driven mindset with the ability to balance security requirements with operational feasibility and business needs.
$190,000 - $230,000 a year
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Conduct, devise, and execute testing of security controls pertaining to identity management, key management, and infrastructure in network and cloud setups.
Aid client assurance tasks, including addressing Requests for Proposals (RFPs), Requests for Information (RFIs), and Due Diligence Questionnaires (DDQs).
Recognize and assess trends in client inquiries and offer feedback to internal teams for enhancing documentation and control preparedness.
Perform security due diligence and continuous monitoring for Web3/blockchain vendors, involving evaluating their control maturity, scrutinizing SOC reports and security documents, and identifying residual risks.
Coordinate external audit activities by managing walkthroughs, collating evidence, and tracking responses.
Pinpoint and analyze gaps in existing and new processes, devise and chart remediation suggestions until completion (e.g., onboarding procedure).
Develop and sustain comprehension of pertinent financial regulatory security requirements and ensure control alignment.
Research and distribute information security best practices, emerging threats, and mitigation techniques with internal teams.
Evaluate and suggest modern security tools, automation, and technologies to elevate overall security stance.
Assess blockchain network or protocol upgrades for their potential security implications on the platform.
Requirements
A minimum of 8 years' relevant experience in security assurance, audit, compliance, or cloud security engineering.
Demonstrated proficiency in testing and validating security controls across IAM, key management, and network/cloud environments.
Firm understanding of Identity and Access Management (IAM) principles.
Knowledge of cryptographic key management, HSMs, and KMS systems.
Comprehensive understanding of cloud and network security architecture and configuration.
Proven track record in supporting SOC 1, SOC 2, ISO 27001, PCI DSS, or equivalent external audits and assessments.
Exposure to major cloud platforms like AWS, GCP, Azure, and infrastructure-as-code.
Experience in creating client assurance materials, RFP/RFI/DDQ responses, and evidence documentation.
Familiarity with blockchain platforms or digital asset custody systems is beneficial.
Capable of independent work and performing under pressure.
Excellent oral and written communication skills.
Pragmatic and solution-driven mindset with the ability to balance security requirements with operational feasibility and business needs.
$190,000 - $230,000 a year
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Сrypto.com
Senior Python Data Engineer (Finance Technology)
Shenzhen, China
Shenzhen, China
Full time
Hybrid
We are seeking a talented individual to join our software team that focuses on designing, developing, maintaining, and enhancing software for various projects that are closely related to our core businesses. As part of the team, you will play a key role in designing scalable applications, involving frontend UI and backend infrastructure development.
Join us in building and managing a robust data transformation pipeline for our Finance teams. Your responsibilities will include designing and implementing data pipelines to ensure data quality, reliable data delivery, and timely financial reporting. You will also be tasked with creating tailored data products to enable users with self-service capabilities and accurate answers to their data inquiries.
Requirements:
Proficiency in Python for scripting purposes
Strong SQL skills for querying, transforming data, and optimizing performance
Experience with Apache Airflow or similar tools for working with Directed Acyclic Graphs (DAGs)
Ability to utilize GitHub for version control, collaboration, and branching
Collaborative mindset to effectively translate business requirements into technical solutions
Proficient in spoken English for communication purposes
Familiarity with Docker, Kubernetes, AWS/cloud platforms, and unit testing
Additional experience in Elixir, Cloudera Data Warehouse, AWS Athena/Tableau would be a bonus
Responsibilities:
Design and enhance Directed Acyclic Graphs (DAGs) with Python and Apache Airflow to meet financial reporting needs
Maintain internal tools for managing sensitive company data securely
Collaborate with various teams including Data Science, Data Warehouse, Exchange, Backend, and Finance to align on data requirements and deliverables
Document processes extensively to ensure smooth team collaboration and hand-offs
Life @ Crypto.com
Join a talented, ambitious, and supportive team that empowers you to think big and explore new opportunities. Benefit from a proactive and transformational working environment that encourages innovative solutions. Develop new skills and grow professionally within the organization while enjoying a supportive work culture where colleagues help one another achieve common goals. Embrace flexible work hours, remote work options, and take advantage of internal career mobility opportunities.
Benefits:
Competitive salary package
Generous annual leave entitlement, including birthday and work anniversary leave
Flexible work arrangements, including hybrid and remote setups
Opportunities for professional growth through internal mobility program
Enjoy work perks such as the Crypto.com visa card upon joining
Founded in 2016, Crypto.com is a global cryptocurrency platform serving millions of customers worldwide. Our mission is to make cryptocurrency accessible to everyone. With a focus on security, privacy, and compliance, we are driving cryptocurrency adoption through innovation to create a fairer digital ecosystem for the future generation.
Learn more about us at Crypto.com.
Crypto.com is committed to fostering an inclusive and diverse work environment where equal opportunities are provided to all individuals. We value and promote diversity and seek candidates from various backgrounds to strengthen and enrich our team.
Applicants' personal data will only be used for recruitment purposes. Please be advised that only shortlisted candidates will receive further communication. Artificial intelligence (AI) tools may be utilized in the recruitment process to support initial screenings or reviews; however, the final hiring decisions are made by human evaluators. For more information on data processing, feel free to contact us.
Join us in building and managing a robust data transformation pipeline for our Finance teams. Your responsibilities will include designing and implementing data pipelines to ensure data quality, reliable data delivery, and timely financial reporting. You will also be tasked with creating tailored data products to enable users with self-service capabilities and accurate answers to their data inquiries.
Requirements:
Proficiency in Python for scripting purposes
Strong SQL skills for querying, transforming data, and optimizing performance
Experience with Apache Airflow or similar tools for working with Directed Acyclic Graphs (DAGs)
Ability to utilize GitHub for version control, collaboration, and branching
Collaborative mindset to effectively translate business requirements into technical solutions
Proficient in spoken English for communication purposes
Familiarity with Docker, Kubernetes, AWS/cloud platforms, and unit testing
Additional experience in Elixir, Cloudera Data Warehouse, AWS Athena/Tableau would be a bonus
Responsibilities:
Design and enhance Directed Acyclic Graphs (DAGs) with Python and Apache Airflow to meet financial reporting needs
Maintain internal tools for managing sensitive company data securely
Collaborate with various teams including Data Science, Data Warehouse, Exchange, Backend, and Finance to align on data requirements and deliverables
Document processes extensively to ensure smooth team collaboration and hand-offs
Life @ Crypto.com
Join a talented, ambitious, and supportive team that empowers you to think big and explore new opportunities. Benefit from a proactive and transformational working environment that encourages innovative solutions. Develop new skills and grow professionally within the organization while enjoying a supportive work culture where colleagues help one another achieve common goals. Embrace flexible work hours, remote work options, and take advantage of internal career mobility opportunities.
Benefits:
Competitive salary package
Generous annual leave entitlement, including birthday and work anniversary leave
Flexible work arrangements, including hybrid and remote setups
Opportunities for professional growth through internal mobility program
Enjoy work perks such as the Crypto.com visa card upon joining
Founded in 2016, Crypto.com is a global cryptocurrency platform serving millions of customers worldwide. Our mission is to make cryptocurrency accessible to everyone. With a focus on security, privacy, and compliance, we are driving cryptocurrency adoption through innovation to create a fairer digital ecosystem for the future generation.
Learn more about us at Crypto.com.
Crypto.com is committed to fostering an inclusive and diverse work environment where equal opportunities are provided to all individuals. We value and promote diversity and seek candidates from various backgrounds to strengthen and enrich our team.
Applicants' personal data will only be used for recruitment purposes. Please be advised that only shortlisted candidates will receive further communication. Artificial intelligence (AI) tools may be utilized in the recruitment process to support initial screenings or reviews; however, the final hiring decisions are made by human evaluators. For more information on data processing, feel free to contact us.