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Java Backend Engineer

Secure backend systems, shown visually.

Spring Boot BFF layers, API gateways, security guardrails, and cloud delivery for banking and workflow-heavy products.

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Wen Liang GitHub profile image
Wen Liang8+ years building backend and platform systems.
Backend architecture diagram showing mobile web clients, BFF layer, API Gateway, microservices, token validation, data masking, and Kafka Redis
8+ yearsBackend and platform engineering
Banking BFFSpring Boot services for digital channels
Aug 2028NZ open work rights

Systems, not resume blocks.

Short project snapshots from the work I want hiring teams to remember.

Selected systems visual cards for TSB Bank BFF, low-code platform, forecasting cloud, and batch simulator

Backend strengths

Concise signals for Java backend roles, without turning the page into a PDF copy.

01

BFF and API contracts

Clear endpoints for mobile and web teams.

02

Security guardrails

OAuth2, JWT, RBAC, token checks, masking.

03

High-concurrency work

Kafka, Redis, batch flows, locking.

04

Cloud delivery

AWS, Docker, CI/CD, Nginx, PM2.

Backend toolkit radar diagram showing Java Spring, BFF, API Gateway, OAuth2 JWT, Kafka, Redis, AWS, Docker, CI CD, PostgreSQL, RBAC, and testing

Focused stack

Backend-first, with enough frontend and deployment experience to ship complete products.

Java 17Spring BootSpring CloudAPI GatewayOAuth2/JWTRBACKafkaRedisPostgreSQLAWSDockerReact/Vue

Open to Java backend roles in New Zealand.

Auckland based. Interested in backend, platform, integration-heavy, and financial systems work.

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