System Analyst​/API Designer

Position: System Analyst/ API Designer
Location: Manila

Job Description:

API Designer (Banking Domain)

Location:

Philippines (Full Onsite)
Role Type:
Full Time Experience Level: Senior Department:
Enterprise Architecture / Digital Channels / Integration Services About the Role We are seeking a highly skilled API Designer to join our enterprise architecture and digital integration team. This role is critical in shaping the bank’s API‑first strategy and enabling seamless connectivity across channels, microservices, legacy systems, and partner ecosystems.

You will work closely with product owners, domain architects, backend engineers, and integration specialists to design enterprise‑grade APIs, domain‑aligned service contracts, and modern integration patterns that follow BIAN, cloud‑native, and financial‑industry standards.

This position is ideal for professionals with strong experience in financial systems, legacy‑to‑modern modernization, domain‑driven API design, and translating business requirements into high‑quality API specifications.

Key Responsibilities API Design & Governance Design clear, reusable, and versioned REST APIs for internal services, channels, and external partners.

Produce API contracts using OpenAPI/Swagger, including:endpoint definitions domain models sequence diagrams integration flows

Define standards for naming, versioning, pagination, error handling, idempotency, and backward compatibility.

Ensure all APIs comply with security, governance, and regulatory requirements (e.g., PCI/PII, data masking).Domain & Requirements Analysis Work with business units and product teams to refine requirements and define domain boundaries.

Map capabilities to BIAN service domains and design modular, domain‑aligned APIs.Break business processes into stable domain models and service contracts.

Produce functional/technical specifications that guide development teams.

Integration & System Analysis Design APIs that interface with:

Core banking systems

Legacy systems (SOAP/REST/JDBC, mainframe gateways)
Middleware and API Gateways Event-driven architectures (Kafka/SQS/Event Bridge)
Support modernization using patterns such as:

Anti‑Corruption Layer (ACL)
Strangler Fig Domain decomposition

Service migration

Provide guidance on:sync vs. async design caching strategies payload modeling error/compensation flows

Documentation & Collaboration Create high‑quality technical design docs, API catalogs, and sequence/flow diagrams.

Collaborate with QA, Dev Ops, SRE, and development teams to ensure API consistency and readiness.

Participate in architecture review boards, sprint grooming, and solution design workshops.

Qualifications Must Have5+ years experience as API Designer, Business Analyst, Systems Analyst, or Integration Analyst in financial systems.

Strong ability to turn business requirements into technical API specifications.

Proven experience in:

REST API designJSON schema design

OpenAPI/Swagger System integration & domain modeling

Experience in banking, fintech, payments, or enterprise-scale financial systems.

Technical Competencies API & Integration Technologies REST API standards, API modeling, OpenAPI
3.xAPI Gateways such as:

Apigee, Kong, WSO2, Mulesoft, or equivalent

Message-driven integration using:

Kafka, MSK, RabbitMQ, SQS, or Event Bridge Legacy  Integration SOAP/WSDL, XML/XSD, JAX‑WSJDBC/database integration with legacy core systems

Experience designing ACL (Anti‑Corruption Layer) patterns

Architecture & PatternsBIAN domains, service landscape mapping

Microservices architecture (Spring Boot preferred)
Event-driven patterns:

CQRSOutbox pattern

Saga Pattern (orchestration/choreography)
Chained Services & event sourcing

Security & ComplianceOAuth2, JWT, HMAC signatures, mTLSAPI rate limiting, throttling, quota managementPCI/PII-safe payload design and data masking

Tooling

Postman / Insomnia Swagger Hub  / Stoplight / Redocly Confluence, Jira, Lucidchart / Draw.ioGit/Git Lab for design versioning

Soft Skills Excellent analytical and communication skills

Strong documentation habits

Ability to lead discussions with business, architects, and engineering teams

Comfortable working in Agile teams with fast-paced delivery cycles

Nice to Have Experience in:

Payments, settlements, lending, core banking ODS…