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About Us

XPLAIN is designed and supported by a team of senior derivatives practitioners, keen to address the vast inefficiencies surrounding the world of OTC derivatives valuation controls

Our Vision

Combining the latest available technology with significant derivatives experience, XPLAIN seeks to redefine the processes surrounding the valuation of OTC derivatives by increasing robustness, reducing risk and minimising inefficiencies, whilst increasing transparency and traceability.

Our Experience

The XPLAIN team has an average of more than 25 years of experience in technology, trading, modelling, risk management, valuation, documentation, reporting and regulation.

our team

Vincent Dahinden

Chief Executive Officer

Thu-Uyen Nguyen

Chief Operating Officer

Teimuraz Barbakadze

Head of Client Engagement

Kevin Liddy

Head of Market Research

Martin Ross

Chief Technology Officer

Philip Swannell

Head of Quantitative Analysis

Su Green

Head of Products

Jon Gregory

xVA Senior Advisor



Vincent has 35 years of experience in the financial sector and consultancy, beginning his career in 1986 as a fixed income fund manager at Citibank in Switzerland. He then moved to Merrill Lynch as an FX and interest rates derivatives structurer. At Bear Stearns, he helped build the credit derivatives business in Europe, before joining CSFB as co-head of securitisation for Asia. Returning to Merrill Lynch as a Managing Director in Europe, he ran the Corporate Derivatives desk and eventually the structured credit and corporate securitisation business. In 2004 he joined RBS as Managing Director responsible for the exotic credit trading and structuring business, which included the credit correlation desk, CDO/CLO, structured products and principal finance. Vincent holds an MBA in Finance from Hartford University.



Thu-Uyen has 27 years of experience in trading complex derivatives and consultancy. Prior to Solum Financial, she worked at Merrill Lynch, Bear Stearns and Chase Manhattan Bank. During her eight years at Merrill Lynch, she was in turn responsible for trading the credit correlation book, new product development, co-heading the Structured Credit Structuring Group, and overseeing the structuring and risk management of the ABS correlation book. For three years at Bear Stearns, Thu-Uyen was responsible for exotic interest rate trading. While at Chase Manhattan, she was an exotic interest rate quant trader and also traded vanilla options. Thu-Uyen holds a five-year engineer degree in Applied Mathematics and Computer Science.



Teimuraz has 33 years of experience in banking, asset management and consultancy. Prior to joining Solum Financial, he worked at F&C Asset Management, Société Générale, Merrill Lynch, Deutsche Bank and Moody’s Investors Service. At F&C Asset Management and Société Générale he was head of structured credit business in Europe, specialising in origination, structuring and marketing of various fixed income products as well as managing proprietary asset portfolios. Previously at Deutsche and Merrill he was head of the teams responsible for arbitrage and balance sheet CLOs and regulatory capital management transactions. Teimuraz holds International MBA from Glasgow University and PhD in Mathematics from Moscow Institute of Control Studies.



Kevin has 37 years of experience in trading, risk management and consultancy. He has acted as an expert witness and been deposed in the US courts. Prior to joining Solum Financial Kevin worked at Chase Manhattan, Bear Stearns, Nat West and Royal Bank of Scotland. At Royal Bank of Scotland he was Global co-head of Counterparty Exposure Management responsible for the Pricing, Management and Trading of all counterparty risk activities. In addition Kevin was Global Head of STIRT, responsible for all Delta trading products in the short end of the curve. Previously at Bear Stearns and Chase Manhattan he was head of Sterling derivative trading. Kevin holds a BSc. Hons in Applied Science from Kingston University.



Martin Ross has 22 years experience working in financial technology. Martin has developed financial technology products for existing and new markets. He has worked on the technology sell side with a wide variety of institutions including retail and private banks, broker dealers, family offices and wealth managers on a broad range of financial products. For the last ten years has worked on the asset buy side as a technology leader for financial institutions including CTO of River and Mercantile Group PLC. Martin holds an MA from Cambridge University.



Philip Swannell

Head of Quantitative Analysis

Philip has 36 years of experience in OTC derivatives, trading, quantitative analytics and systems design. Philip was formerly a Managing Director at Nomura in London with responsibility for both front office quantitative analytics (rates, credit, commodities and FX) and Nomura’s in-house global front-to-back derivative system. Prior to this Philip worked at UBS and NatWest as a derivatives trader and systems designer. Philip holds an MA in Mathematics from Oxford University.



Su has 22 years of experience in structured credit (structuring, marketing, trading) and consultancy. She was formerly a Portfolio Manager responsible for trading structured credit at CQS, a global credit hedge fund. Prior to this Su was an Executive Director at Morgan Stanley and a Director at Merrill Lynch both within the structured credit areas. She began her career as an interest rate swaps trader at Merrill Lynch. Su holds an MA in Mathematics from Cambridge University.



Jon has 25 years of experience in credit derivatives, counterparty credit risk management and quantitative credit analytics. He was formerly Head of Quantitative Analytics at Barclays Capital, prior to which he was Global Head of Quantitative Credit Research at BNP-Paribas. Jon is the author of several books and articles, including “Counterparty Credit Risk, the new challenge for global financial markets”, published in 2009. Jon has authored expert witness reports for the US, Canadian and Australian courts and has been deposed in the US. He holds a PhD from Cambridge University.

Join Us

We are a team of forward thinking individuals with a combined passion to bring efficiencies and robustness to the financial services. We work hard but always efficiently. If you would like to join our team, please see our available positions below or contact us .


Job Description

The role reports to the CEO.  The role provides technical leadership for the product and business, engages in hands on solution and technical architecture and leads the development team. The role is responsible for managing technical third party vendors and representing the business from a technical perspective with clients.


  • Direct the technical vision and strategy for the product.
  • Lead the technical development and delivery of the product, ensuring that the architecture is scalable, robust, secure and delivers the best possible user experience.
  • Ensure that best-fit technology is employed to support Enterprise and SaaS deployments
  • Direct the development team and provide hands on technical and solution architecture to help them to continue to innovate and deliver best in class product technology.
  • Working with the CEO and COO to build out the information systems and technology required to provide the business with the capabilities it needs to support the growing client base.


The CTO is accountable for:

Technology strategy and architecture

  • Owning and developing the technology architecture for the product.
  • Developing the business’s technology strategy and roadmaps.
  • Delivering against the technology roadmaps, building and maintaining the confidence and trust of key stakeholders including the CEO, COO.
  • Ensuring that products are architected to be resilient, flexible, scalable, and secure to meet current and future requirements.
  • Ensuring that the product can support both SaaS and Enterprise deployments with minimal variations to the code base.

Product development

  • Working with the Product team to formulate roadmaps while prioritising and resolving cross dependencies as necessary.
  • Ensuring that new technologies are adopted at the right point in their maturity cycle and deliver a competitive advantage.
  • Ensuring stability, performance, and security of products.
  • Manage the release schedule to account for varying BD, R&D and client requirements.

Deployment and Maintenance

  • Managing the deployment strategy for SaaS and Enterprise deployments.
  • Accountable to the business for technology service levels and proactive resolution of both internal and external customer requirements and issues.

Management and relationships

  • Technical leadership and direction for the development and quality assurance team.
  • Building strong and effective relationships with key stakeholders.
  • Managing the company’s technology governance, risk, and compliance including information security management.
  • Managing and maintaining key technical client relationships.

Partnerships and Sales

  • Technology due diligence and relationship management for business partnerships.
  • Understanding and communicating technical implications of contract negotiations with customers.


Candidate Experience:

10 + years successful track record as technology leader.

  • Extensive experience as a hands-on engineer and architect with a proven track-record of delivering complex, data-centric products (financial services or trading).
  • Experience of delivering software to customers as an external provider.
  • Experience in leading and coaching cross discipline geographically dispersed technology teams.
  • Possess a good mix of strategic and hands-on practical technical knowledge with an awareness of the latest technical enablers and trends.
  • Strong knowledge and experience of Cloud-native technologies (preferably AWS), Docker, Kubernetes, Terraform, Microservices architecture.
  • SaaS based product development and knowledge.
  • A grounded and communicative leadership style with a hands-on approach.
  • An ability to think laterally in the search for new and optimum technology solutions to business challenges.
  • Strong interpersonal skills and relationship management competencies to support sales, implementation projects and ongoing customer service of clients.
  • Commercially minded, with a strong appreciation of delivering business value.
  • A strong interest and understanding of the derivatives or similar marketplace.
  • Commercial skills necessary for vendor / supplier negotiations.

Candidate Attributes:

  • Experienced and highly technical individual, who continues to maintain his/her technical skills.
  • Calm and collected thinker, able to solve complex business challenges.
  • Able to articulate technology strategy in such a way as to engage business stakeholders.
  • Able to rapidly build trust and respect by delivering on commitments to stakeholders.
  • Genuinely passionate about technology and emerging trends, including AI & Data Science
  • Able to establish respected and meaningful relationships with C-suite executives.
  • An excellent communicator and motivator with strong interpersonal, presentation, negotiation and organizational skills.
  • An expert in their field who sets high standards for himself/herself and others

Technical environment

  • Programming languages / run-times: Java, Spring, JavaScript/Type Script, Angular, Terraform, Julia
  • Cloud: AWS, PaaS, Docker, Kubernetes, Helm, Istio, RabbitMQ,
  • Monitoring: Elasticsearch, Fluentd and Kibana (EFK), Prometheus, Grafana, Sentry
  • APIs: RESTful services, OpenAPI.
  • Database: No-SQL (MongoDB)
  • CI/CD: Github Actions, Terraform
  • Messaging: Durable and non-durable broker, RabbitMQ, Kafka
  • Security: Static and Dynamic code testing, OWASP.
  • Version Control software: GIT, Github
  • Business IT: Office365
  • Service Management: Jira, Confluence


  • Degree level education in numerical focused subject or computer science.
  • Appropriate professional qualifications to support the application.
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