Open Banking API Specialist
GrowingConnecting financial institutions through APIs built to open banking standards
Open Banking API Specialist Salary
United Kingdom
£48,000 – £82,000
United States
$85,000 – $145,000
Varies by location, sector, and experience. Last updated: 2025.
What Is an Open Banking API Specialist?
An Open Banking API Specialist designs, builds, and manages the API infrastructure that enables regulated data sharing and payment initiation between financial institutions, third-party providers, and consumers under open banking frameworks. The role combines API engineering with deep knowledge of the regulatory standards — PSD2, the UK Open Banking Standard, the Consumer Financial Protection Bureau's 1033 rule in the US — that define how financial data is shared, how consent is managed, and what security and performance standards open banking APIs must meet. Open Banking API Specialists work at a distinct layer of financial technology: not building the banking products themselves, but building and operating the regulated interfaces through which those products connect to the broader financial ecosystem.
What distinguishes this role from a FinTech Developer — who may implement open banking integrations as one part of a broader product remit — is dedicated specialisation in the standards, security architecture, and operational requirements of open banking API infrastructure specifically. Practitioners manage the full lifecycle of open banking API provision or consumption: from initial conformance testing and regulatory certification through to ongoing performance monitoring, incident management, and standards evolution. The role exists in banks and building societies operating as account servicing payment service providers, specialist open banking technology providers, account aggregation and personal finance management platforms, and payment initiation service providers.
What Does a Open Banking API Specialist Do?
- Design and implement open banking APIs conforming to UK Open Banking Standard, PSD2, and emerging Consumer Duty data-sharing requirements
- Build and manage consent and authorisation infrastructure implementing OAuth 2.0, FAPI, and dynamic client registration for third-party access
- Conduct conformance testing and manage regulatory certification of open banking API implementations against published standards
- Monitor API performance, availability, and error rates against regulatory service level requirements and internal uptime commitments
- Integrate open banking APIs with core banking systems, identity and access management platforms, and fraud detection infrastructure
- Manage API versioning, deprecation, and standards evolution as regulatory technical standards are updated by the FCA and Open Banking Limited
Open Banking API Specialist Skills
Hard Skills
- REST API Design
- Authentication and Authorisation
- API Gateway Management
- PKI Architecture
- Certificate Lifecycle Management
- Regulatory Compliance
- Security Architecture
- System Integration
- Technical Documentation
- Performance Monitoring
Soft Skills
- Attention to DetailStandards conformance at the field level in OAuth, FAPI, and dynamic client registration implementations
- Risk AwarenessSecurity vulnerabilities in open banking APIs carry regulatory and reputational exposure
- AccountabilityOwning the regulatory conformance and certification of the institution's open banking API provision
- Methodical ApproachSystematic API lifecycle management through versioning, deprecation, and standards updates
- CollaborationCoordinating core banking, IAM, fraud detection, and third-party provider integrations
- Continuous LearningTracking standards evolution from FCA, Open Banking Limited, and CFPB
Open Banking API Specialist Tools & Software
How to Become a Open Banking API Specialist
Typical Route
Most Open Banking API Specialists hold a bachelor's degree in Computer Science, Software Engineering, or Information Systems. Universities including Georgia Tech, the University of Michigan, and Carnegie Mellon offer programs with relevant software engineering and financial systems content. A master's degree in Financial Technology, Computer Science, or Information Security supports progression into architecture and regulatory compliance roles. Many practitioners enter from general API development or banking technology backgrounds and develop open banking-specific knowledge through direct work with the Consumer Financial Protection Bureau's Section 1033 rule and FDX API standards.
Alternative Route
The Financial Data Exchange's FDX API technical documentation and sandbox environment are the essential self-directed reference for practitioners developing against US open banking standards. The CISA certification provides information security grounding relevant to practitioners working in FDX-authorised and bank-regulated API environments. Coursera's API development and FinTech specialisations and Udemy's financial services integration courses provide accessible structured entry. A portfolio of open banking API integrations — demonstrating consent management, account aggregation, and payment initiation against FDX or Plaid-compatible schemas — is the primary hiring credential for non-traditional candidates.
A Day in the Life of an Open Banking API Specialist
Morning
Afternoon
Open Banking API Specialist Career Path
Junior Open Banking API Specialist
0–2 yrs
Open Banking API Specialist
2–4 yrs
Senior Open Banking API Specialist
4–7 yrs
Lead Open Banking API Engineer
7–10 yrs
Principal Engineer / Head of Open Banking
10+ yrs
Open Banking API Specialist Job Outlook
Open banking mandates and expanding PSD2 implementation across Europe, alongside equivalent frameworks developing in the US, Canada, and Australia, are sustaining demand for specialists who understand both the technical and regulatory dimensions of API-driven financial data sharing. UK demand is active across banks, account information service providers, payment initiation providers, and FinTech platforms building embedded finance products. Practitioners who combine API design and integration capability with FCA regulatory awareness, OAuth security standards, and financial data schema knowledge are consistently difficult to source relative to active demand.