API Solution Architect

Position: API Solution Architect

Hoxton Wealth is a leading global wealth management firm, delivering financial solutions to international investors and expatriates across regulated jurisdictions.

We are seeking an API Solution Architect to lead the design and evolution of our API platform and integration architecture. This role is suited to a senior, hands-on architect with deep experience designing scalable, secure, and well-governed APIs that support complex business workflows across internal systems and external partners.

You will play a key role in defining API standards, integration patterns, and architectural guardrails that enable teams to build reliable, compliant, and developer-friendly services. The role requires strong technical depth, architectural judgment, and the ability to collaborate across engineering, security, product, and compliance teams in a regulated environment.

You will work closely with backend engineers, platform teams, DevSecOps, and product stakeholders to ensure APIs are consistent, discoverable, secure, and aligned with long-term platform strategy.

Responsibilities

• Define and own the API architecture strategy, standards, and best practices across the organisation.
• Design scalable, secure, and versioned REST APIs to support internal services, client-facing applications, and third-party integrations.
• Establish and govern API contracts using OpenAPI / Swagger, ensuring clarity, consistency, and strong consumer experience.
• Provide architectural guidance and hands-on design support for services built using Python, Node.js, and TypeScript.
• Define integration patterns for synchronous and asynchronous communication, including event-driven and message-based architectures where appropriate.
• Ensure APIs are designed with security, observability, and reliability in mind, including authentication, authorization, rate limiting, and error handling.
• Collaborate with DevSecOps and platform teams to embed API security, testing, and documentation into CI/CD pipelines.
• Partner with product and engineering teams to translate complex business workflows into clear, well-structured API designs.
• Guide teams on API versioning, backward compatibility, deprecation strategies, and lifecycle management.
• Review designs and implementations to ensure adherence to architectural standards and non-functional requirements.
• Support regulatory and compliance requirements by ensuring APIs are auditable, well-documented, and aligned with internal controls.
• Mentor engineers and contribute to raising overall API design maturity across teams.
  
  
  

• 8–10 years of experience in software engineering and solution architecture, with a strong focus on API and integration design.
• Deep hands-on experience designing and implementing RESTful APIs using Python, Node.js, and TypeScript.
• Strong experience defining API contracts using Swagger / OpenAPI, including schema design, validation, and documentation.
• Solid understanding of API security principles, including OAuth 2.0, JWT, API keys, and role-based access control.
• Experience designing APIs for high availability, scalability, and performance in cloud-native environments.
• Familiarity with API gateways, service meshes, or integration platforms.
• Strong understanding of data modelling, validation, and error handling patterns for public and internal APIs.
• Experience working in regulated environments such as financial services, fintech, or similar industries.
• Ability to balance short-term delivery needs with long-term architectural sustainability.
• Excellent communication skills, with the ability to explain architectural decisions to both technical and non-technical stakeholders.
• Proven ability to mentor teams, review designs, and drive architectural alignment across multiple initiatives.