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Senior Application Security Engineer



London, UK
Posted on Tuesday, July 2, 2024
Copper is a digital asset technology company dedicated to helping institutional investors safely acquire, trade, and store crypto assets.

Built and led by Dmitry Tokarev, a software and financial engineering specialist, the firm provides a comprehensive suite of custody, trading and settlement solutions that reduce counterparty risk and bring greater capital and operational efficiency to digital asset markets. At the heart of Copper's offering is Multi-Party Computation (MPC) technology – the gold standard in secure custody. Copper’s multi-award winning custody system is unique in that it can be connected to centralised exchanges, DeFi applications and even staking pools without the assets leaving the custody.

Built on top of this state-of-the-art custody, ClearLoop™ is the first solution in the market that overcomes a growing industry challenge; counterparty risk with exchanges. This solution underpins a full prime services offering, connecting global exchanges and enabling customers to trade and settle directly from the safety of their MPC-secured wallets. By reducing settlement time for transfers to a few milliseconds (without blockchain network dependency) and offering enhanced security measures, ClearLoop™ is rapidly reshaping the way asset managers trade and manage capital.

In addition to industry-leading security certifications, Copper has one of the strongest insurance coverages in the industry from an A+ rated insurer, positioning the firm as the partner of choice for institutions seeking to safeguard their assets.

Department environment

Copper's Information Security department keep the business' systems and network resources secure and protect the company, employees, and client data.The Senior Application Security Engineer is a key role within Copper's Information Security department, focusing on all technical and process aspects of Copper's SDLC. This role involves triaging vulnerabilities, collaborating with engineering teams and other information security teams to harden systems, deployments, code, and the improvement of processes & implementation within Copper's CI/CD cycle.Senior Application Security Engineers work closely with all engineering teams and under the guidance of the Head of Application Security to ensure security standards are baked into Copper's processes, providing the necessary guard rails for rapid, but secure development in a rapidly evolving industry.

Key Responsibilities of the role

  • Ownership of vulnerability process, tracking and remediation efforts within the engineering department.
  • Champion for secure coding and infrastructure deployment(s) within Copper’s development community, actively promoting "well architected" best practices and security initiatives within Copper.
  • Provide insight into emerging technologies and relevant domain areas, assessing their impact on Copper’s current security posture. Provide detailed insight into domain specific topics, becoming Copper’s trusted SME on given security (or technical) topics where required.
  • Own the design and implementation of technical, scalable solutions to address current posture weaknesses, whether team or department based.
  • Ownership of multiple security tools and associated vendor relationships. Responsible for ensuring effective integration of tooling into Copper’s SDLC and on-going BAU operation is automated and scalable.
  • Design and implement technical, repeatable, and scalable solutions to address current posture weaknesses across Copper’s estate.
  • Engage with numerous stakeholders to ensure security posture weaknesses (risks) are effectively understood and plans for their mitigation are in place, fostering close relationships with key engineering teams to facilitate remediation(s).
  • Create, improve, and advocate for security controls and policies within the wider business, in-line with industry-defined best practices and ensure these requirements are effectively understood and adhered to.

Your experience, skills and knowledge


  • Cloud Native: Detailed knowledge of AWS services and their configuration/operation. Practical experience with security or technically focused projects a must.
  • Secure by Design: In-depth experience working with cloud ‘secure default’ design patterns and their knowledge of their implementation. Expertise with different threat & vulnerability classes and associated systemic solutions, removing the possibility of vulnerabilities before they can manifest.
  • Domain Knowledge: Strong understanding of the S-SDLC. Intimate knowledge of security-specific tooling domains (e.g. SCA, SAST, DAST, MAST) and their effective integration within the S-SDLC. Awareness of microservice architecture and associated common deployment patterns a must.
  • Security Industry Knowledge: Deep familiarity with security standards & frameworks e.g., OWASP, MITRE Attack etc and their practical application.
  • Technical Ability: Hands-on experience with scripting elegant, scalable solutions to encountered problems, and prior experience implementing and/or reviewing terraform for infrastructure deployments (e.g., EC2, networking or lambda) a must; implementation and enforcement of standards in code.
  • Tooling Proficiency: Hands-on experience with security tooling, REST APIs, Docker, Linux, Git and scripting language(s) of choice.
  • Strategy-Led Thinking: Previous experience owning the implementation of top-level strategy deliverables and developing work-items that adhere to the wider-organisational goals. Prior experience designing and collaborating on team-strategies a plus.
  • Risk-First Decision Making: Strong analytical thinking with prior experience providing materials and insight on complex security topics to risk-focused committees and stakeholders alike. Comfortable contextualising information against wider risk-landscape.
  • Communication: Exceptional ability to articulate security concepts to a diverse audience, including senior stakeholders, both technical and non-technical.


  • Application Development: Experience with software engineering considered a plus.
  • Relevant Certifications: AWS Certified Solutions Architect, AWS Security Speciality, CompTIA CASP+ and other relevant specialist cloud certifications. Advanced training courses (CISMP, CISSP, InfoSec MSc, etc.) a plus.
  • InfoSec Alignment: Involvement or membership with industry bodies. Experience with Incident Response, Penetration testing, or security architecture a plus.
  • Copper Industry Alignment: Awareness of key trends and happenings in broader cryptocurrency and digital asset industry, and company relevant training (Web3, Blockchain, DeFi, Smart Contracts, etc.)
  • Management: Experience managing direct reports, incl. performance reviews a plus.

The benefits offered

  • Holidays: 27 days per annum paid holiday, in addition to bank holidays
  • Years of Service Days: Employees are awarded one additional day of paid time off per year of service (up to three years)
  • Vitality Health:
    • Medical Insurance: Copper provides all employees with individual cover. Medical history is disregarded, and a 24/7 virtual GP is available (£100 excess per person per year)
    • Dental Insurance: Comprehensive dental cover for preventative, restorative and emergency treatment
    • Audiology Cover: Employees can claim back up 80% of costs, up to £300, for any hearing tests or hearing aids
    • Optical Cover: £500 optical cover (through Vision Express) or 80% reimbursement up to £300 for any other optician
    • Menopause Support: Unlimited support for those experiencing symptoms of the menopause, such as video consultations with a dedicated menopause practitioner
    • Vitality services also include an additional £100 for minor diagnostic tests and private prescriptions, including home diagnostics
    • Headspace - Copper's policy provides all employees with a free Headspace subscription. Headspace provides great resources to manage stress, improve sleep, meditate and enhance mindfulness
    • Discounts and free benefits - the Vitality programme has been designed for preventative care to encourage members to improve their overall health and will reward those for doing so. Employees can access additional benefits such as 50% off running shoes, discounted health screenings, 50% off at Nuffield Health or Virgin Active gyms and much more
  • Home Working Energy Support Scheme: to combat energy prices increasing globally, Copper will provide you, in addition to your salary, with a monthly top-up of £60 or £75 (subject to your energy supplier)
  • Pension up to 10% matched contribution to our company pension scheme via Smart Pensions
  • Cycle to Work
  • Life Insurance cover: Four times your base salary
  • EAP: access unlimited mental health consultations and contact a 24/7 confidential helpline for emotional support
  • Unmind
  • Sponsored Learning and Development opportunities
  • Regular company events and social activities

In return for everything you can bring to Copper, we can offer you an exciting, challenging role in a fast-growing and dynamic business, with career opportunities and welcoming working environment.

If you think you have everything we're looking for and more, then we'd love you to apply for the opportunity.

Copper is an equal opportunity employer. We embrace diversity and equal opportunities in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better our work will be. So, bring us your experience, perspectives, and skills. It is in our differences that we will continue to grow and ensure Copper is transforming how institutional investors engage with digital assets. Copper is a Disability Confident Employer, please let us know if you have a disability. If you require us to provide any assistance during the recruitment process, then we would ask you to highlight this to us and we will be happy to accommodate.