Principal Security Engineer, Security
Status
Phoenix, USA
Full time
Remote
Compensation is not specified
Role
Security Engineer
Description
Circle is a company in the fintech sector leading the charge in the development of the digital economy. They are dedicated to facilitating the seamless transfer of value across the globe in a cost-effective and efficient manner. By leveraging technologies such as USDC, a blockchain-based dollar, Circle empowers businesses and individuals to capitalize on the shifting landscape of digital finance.
What you'll be involved in:
At Circle, transparency and stability underpin every aspect of their operations. The organization is expanding into key global markets, driven by a culture of speed and efficiency. The core values of Multistakeholder, Mindfulness, Driven by Excellence, and High Integrity guide employees in a virtual environment where collaboration and innovation flourish.
What you'll be tasked with:
Circle is seeking a dynamic Principal Security Engineer specialized in Product and Blockchain Security to spearhead the implementation of cutting-edge technical strategies. Collaborating closely with various teams including Engineering, Infrastructure, and IT, you will contribute to fortifying the security posture of cloud operations, software development, and device management.
Responsibilities:
- Collaborate with product management and software engineering departments throughout the software development life cycle to ensure robust security implementations
- Conduct thorough security assessments on web3 and web2 applications using a blend of automated tools and manual intervention; oversee the resolution of identified vulnerabilities
- Propose enhancements to the codebase to mitigate security risks
- Automate security testing through continuous integration and continuous deployment pipelines
- Contribute to the formulation of secure coding standards based on real-world insights within Circle's ecosystem
- Research vulnerabilities specific to blockchain technologies and embed this intelligence into security protocols
- Act as a point of escalation for investigating security incidents and alerts
- Handle vulnerability disclosures related to Circle’s products and systems
- Coordinate with external vendors for conducting penetration tests and security-related projects
- Drive ongoing enhancements to the application security program
- Support parallel security initiatives such as threat modeling, vulnerability scanning, and audits
Core Values:
- Multistakeholder: Devotion to customers, shareholders, employees, and local communities
- Mindful: Valuing respect, active listening, and attention to detail
- Driven by Excellence: Fanatical pursuit of excellence, rejecting mediocrity, and fervently pursuing success
- High Integrity: Foster honest and open communication, maintain high ethical standards, and reject dishonesty and manipulation
Requirements:
- 7+ years of experience in cybersecurity roles
- 4+ years in a leadership role within cybersecurity
- Strong passion for ensuring software security
- Proficiency in penetration testing and knowledge of common attack methodologies
- Expertise in designing secure software features and automation of security protocols
- Experience with AWS and GCP cloud environments
- Familiarity with blockchain technologies like Ethereum, Bitcoin, Solana
- Understanding of public and private key cryptography
- Demonstrated ability to fortify software against common cyber threats
- Self-driven problem solver with a collaborative mindset
- Prior experience within financial services or fintech is desirable
- Bachelor's degree in a relevant field; equivalent experience considered
- Certifications such as CISSP, CEH are advantageous
- Experience with programming languages such as Solidity, Rust, Go, Python is beneficial
- Familiarity with JSON and blockchain languages
- Comfort in remote work environments and occasional travel readiness
Additional Information:
- Position offers day-one PERM sponsorship for suitable candidates
- Compensation based on relevant factors, starting from $200,000 - $257,500
- Additionally includes annual bonus, equity, medical benefits, 401(k), flexible vacation policy, paid sick leave, and holidays
- Circle is an equal opportunity employer committed to fostering diversity and nondiscrimination
Collections: Job , Requirements, Responsibilities, Additional Information, Core Values
Skills Required
Circle
Website
www.circle.comCompany size
Not specified
Location
United States
Description
Not specified
Status
Ali Ahmad
Graphic Designer for Web & Mobile Projects
Part time
Remote
We are lookang for a talented and creative graphic designer to work on various digital design project including web banners social medai posts product mockups and UI/UX layouts
Payment in Crypto
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
QA Support Engineer (Trading Platform)
Hong Kong
Hong Kong
Full time
Hybrid
The team responsible for Trading Infrastructure is developing a cutting-edge Trading Platform that facilitates multi-asset trading with a focus on high performance. The platform is engineered to support financial instruments with low-latency execution, robust risk controls, and seamless integration across various workflows including trading, risk management, operations, and finance.
The system features a modular architecture with core components like market data feeds, order gateways, execution algorithms, risk engines, UI dashboards, middle office reconciliation, and account infrastructure. Key principles guiding the design include event-driven and deterministic system architecture, real-time observability, and stringent security measures.
The technology stack involved comprises Java for low-latency processing, Python, Web UI utilizing React/Ag-Grid, Aeron, ClickHouse, Kubernetes, and modern CI/CD tools with a strong emphasis on automation, scalability, and performance optimization. The team leverages AI-driven development tools to enhance productivity and maintain high-quality standards collectively.
Responsibilities
Collaborate with QA manager and development teams to grasp product features and architecture intricacies.
Create, execute, and upkeep test cases using JBehave or Cucumber frameworks.
Contribute to automation testing pipelines to streamline regression testing efforts.
Develop meaningful test scenarios derived from crypto trading business logic and system workflows.
Conduct functional, regression, integration, and end-to-end testing for various components such as Order Gateway, Execution Algorithm, Market Data, Risk, and Middle Office.
Aid in enhancing and monitoring test coverage across services.
Support bug reproduction, investigation, and collaborate with developers on root cause analysis.
Engage in regular test cycle planning and participate in release validation processes.
Requirements
Must-Have Skills
Solid grasp of crypto trading workflows, exchange matching, order lifecycle, and execution logic.
Familiarity with middle office processes like trade reconciliation.
Hands-on experience with BDD frameworks such as Cucumber or JBehave.
Proficient in independently writing test cases and test scenarios.
Some exposure to test automation, preferably using Java-based tools.
Knowledge of CI/CD pipelines and source control tools like Git.
Strong problem-solving abilities and effective communication skills.
Detail-oriented with a disciplined approach to issue resolution.
Nice-to-Have Skills
Understanding of FIX, WebSocket, or REST protocols commonly used in trading systems.
Experience working in Agile environments.
Exposure to test coverage reporting tools such as Jacoco or SonarQube.
Prior internship or project involvement in financial systems or backend testing.
Life at the Company
Encouraged to explore new opportunities and collaborate with a talented and supportive team.
Proactive working environment that fosters innovation and empowers employees to find creative solutions.
Emphasis on personal and professional growth through skill development.
Supportive work culture where colleagues assist each other.
Unified teamwork to achieve the common goal of widespread cryptocurrency adoption.
Work flexibility with hybrid or remote setups available.
Benefits
Competitive salary with attractive annual leave entitlement.
Work flexibility options including flexible hours and hybrid or remote setups.
Internal mobility program offering diverse career advancement opportunities.
Work perks like the company's visa card upon joining.
Founded in 2016, the company is dedicated to accelerating cryptocurrency adoption through innovation and empowerment. Diversity and inclusion are valued, with opportunities presented in fair and transparent ways to all candidates.
Applicant data will solely be used for recruitment purposes, and only shortlisted candidates will be contacted for further evaluation. AI tools may be leveraged to aid in the recruitment process but human judgment remains pivotal in final hiring decisions.
The system features a modular architecture with core components like market data feeds, order gateways, execution algorithms, risk engines, UI dashboards, middle office reconciliation, and account infrastructure. Key principles guiding the design include event-driven and deterministic system architecture, real-time observability, and stringent security measures.
The technology stack involved comprises Java for low-latency processing, Python, Web UI utilizing React/Ag-Grid, Aeron, ClickHouse, Kubernetes, and modern CI/CD tools with a strong emphasis on automation, scalability, and performance optimization. The team leverages AI-driven development tools to enhance productivity and maintain high-quality standards collectively.
Responsibilities
Collaborate with QA manager and development teams to grasp product features and architecture intricacies.
Create, execute, and upkeep test cases using JBehave or Cucumber frameworks.
Contribute to automation testing pipelines to streamline regression testing efforts.
Develop meaningful test scenarios derived from crypto trading business logic and system workflows.
Conduct functional, regression, integration, and end-to-end testing for various components such as Order Gateway, Execution Algorithm, Market Data, Risk, and Middle Office.
Aid in enhancing and monitoring test coverage across services.
Support bug reproduction, investigation, and collaborate with developers on root cause analysis.
Engage in regular test cycle planning and participate in release validation processes.
Requirements
Must-Have Skills
Solid grasp of crypto trading workflows, exchange matching, order lifecycle, and execution logic.
Familiarity with middle office processes like trade reconciliation.
Hands-on experience with BDD frameworks such as Cucumber or JBehave.
Proficient in independently writing test cases and test scenarios.
Some exposure to test automation, preferably using Java-based tools.
Knowledge of CI/CD pipelines and source control tools like Git.
Strong problem-solving abilities and effective communication skills.
Detail-oriented with a disciplined approach to issue resolution.
Nice-to-Have Skills
Understanding of FIX, WebSocket, or REST protocols commonly used in trading systems.
Experience working in Agile environments.
Exposure to test coverage reporting tools such as Jacoco or SonarQube.
Prior internship or project involvement in financial systems or backend testing.
Life at the Company
Encouraged to explore new opportunities and collaborate with a talented and supportive team.
Proactive working environment that fosters innovation and empowers employees to find creative solutions.
Emphasis on personal and professional growth through skill development.
Supportive work culture where colleagues assist each other.
Unified teamwork to achieve the common goal of widespread cryptocurrency adoption.
Work flexibility with hybrid or remote setups available.
Benefits
Competitive salary with attractive annual leave entitlement.
Work flexibility options including flexible hours and hybrid or remote setups.
Internal mobility program offering diverse career advancement opportunities.
Work perks like the company's visa card upon joining.
Founded in 2016, the company is dedicated to accelerating cryptocurrency adoption through innovation and empowerment. Diversity and inclusion are valued, with opportunities presented in fair and transparent ways to all candidates.
Applicant data will solely be used for recruitment purposes, and only shortlisted candidates will be contacted for further evaluation. AI tools may be leveraged to aid in the recruitment process but human judgment remains pivotal in final hiring decisions.
Сrypto.com
Junior Operations Analyst
Kuala Lumpur, Malaysia
Kuala Lumpur, Malaysia
Full time
Hybrid
Job Duties:
We are in search of a diligent and proactive Junior Operations Analyst to assist the Institutional Sales team. This role involves a blend of operational tasks, reporting, and enhancing processes, making it ideal for individuals who excel in structured processes and data-driven problem-solving scenarios.
Responsibilities include managing client account requests, ensuring data accuracy, developing Salesforce reports and Tableau dashboards, and implementing process automations to enhance efficiency. Collaborating closely with the Senior Operations Manager, you will have a pivotal role in ensuring effective client support and promoting operational excellence.
Key Responsibilities:
Managing Operations
Processing client account inquiries within specified SLAs, such as setting up accounts and adjusting fees.
Conducting routine Salesforce data checks for consistency.
Maintaining operational records and trackers with accuracy and compliance.
Creating and circulating institutional reports regularly.
Reporting & Analysis
Designing and maintaining Salesforce reports and dashboards for monitoring client trading performance.
Assisting in Tableau dashboard creation for client activity and operational metrics.
Tracking and analyzing client trading metrics, rankings, and account performance.
Providing ad-hoc reporting and insights to sales and account managers.
Process Enhancement & Automation
Optimizing Slack workflows and other team automation tools.
Identifying operational inefficiencies and proposing automation solutions.
Updating process documentation and contributing to team knowledge sharing.
Collaboration
Collaborating with account managers, compliance, data, and finance teams to resolve operational requests.
Supporting the Senior Operations Manager on strategic projects and high-priority tasks.
Serving as a dependable point of contact for operational queries within the sales team.
Desired Qualifications:
1–3 years of experience in operations, business analysis, or sales support, preferably in fintech/finance.
Strong organizational skills, capable of managing multiple tasks under pressure.
Proficiency in Excel/Google Sheets and experience with Salesforce reporting.
Familiarity with Tableau or other business intelligence tools is advantageous.
Interest or experience in workflow automation tools like Slack workflows, macros, and scripts.
Analytical mindset with great attention to detail.
Excellent communication skills and ability to collaborate effectively across different teams.
What We Provide:
Opportunity for professional growth in operations and analytics within the cryptocurrency industry.
Exposure to institutional trading operations, client support, and data-driven decision-making.
Clear career progression pathway toward mid-level operations management or business analytics roles.
Collaborative and fast-paced team environment where your contributions yield immediate results.
AI tools may be utilized during the hiring process for reviewing applications, analyzing resumes, or assessing responses to support our recruitment efforts. While these tools aid our team, final hiring decisions are made by human judgment. Kindly reach out if you require further details on how your data is managed.
We are in search of a diligent and proactive Junior Operations Analyst to assist the Institutional Sales team. This role involves a blend of operational tasks, reporting, and enhancing processes, making it ideal for individuals who excel in structured processes and data-driven problem-solving scenarios.
Responsibilities include managing client account requests, ensuring data accuracy, developing Salesforce reports and Tableau dashboards, and implementing process automations to enhance efficiency. Collaborating closely with the Senior Operations Manager, you will have a pivotal role in ensuring effective client support and promoting operational excellence.
Key Responsibilities:
Managing Operations
Processing client account inquiries within specified SLAs, such as setting up accounts and adjusting fees.
Conducting routine Salesforce data checks for consistency.
Maintaining operational records and trackers with accuracy and compliance.
Creating and circulating institutional reports regularly.
Reporting & Analysis
Designing and maintaining Salesforce reports and dashboards for monitoring client trading performance.
Assisting in Tableau dashboard creation for client activity and operational metrics.
Tracking and analyzing client trading metrics, rankings, and account performance.
Providing ad-hoc reporting and insights to sales and account managers.
Process Enhancement & Automation
Optimizing Slack workflows and other team automation tools.
Identifying operational inefficiencies and proposing automation solutions.
Updating process documentation and contributing to team knowledge sharing.
Collaboration
Collaborating with account managers, compliance, data, and finance teams to resolve operational requests.
Supporting the Senior Operations Manager on strategic projects and high-priority tasks.
Serving as a dependable point of contact for operational queries within the sales team.
Desired Qualifications:
1–3 years of experience in operations, business analysis, or sales support, preferably in fintech/finance.
Strong organizational skills, capable of managing multiple tasks under pressure.
Proficiency in Excel/Google Sheets and experience with Salesforce reporting.
Familiarity with Tableau or other business intelligence tools is advantageous.
Interest or experience in workflow automation tools like Slack workflows, macros, and scripts.
Analytical mindset with great attention to detail.
Excellent communication skills and ability to collaborate effectively across different teams.
What We Provide:
Opportunity for professional growth in operations and analytics within the cryptocurrency industry.
Exposure to institutional trading operations, client support, and data-driven decision-making.
Clear career progression pathway toward mid-level operations management or business analytics roles.
Collaborative and fast-paced team environment where your contributions yield immediate results.
AI tools may be utilized during the hiring process for reviewing applications, analyzing resumes, or assessing responses to support our recruitment efforts. While these tools aid our team, final hiring decisions are made by human judgment. Kindly reach out if you require further details on how your data is managed.