Perth · Remote

Julian Bell

Kotlin · Java · AWS
[email protected]

Kotlin-focused software engineer and systems architect. I help teams modernise services, design clean architectures, and deliver secure, maintainable back-ends on AWS.

What I do

  • Architectural design & system planning
  • Kotlin / Java back-end development (Javalin, Spring)
  • AWS serverless: Lambda, API Gateway, S3, RDS (PostgreSQL), IaC with SAM
  • Data migration & performance: jOOQ, HikariCP, JPA
  • Security & crypto integrations (OpenPGP/PGPainless, PKCS#11, KMIP, YubiHSM)
  • Frontend pragmatism: TypeScript/Vue for admin tools when needed
Start a conversation

Recent work

  • AWS Lambda + API Gateway services deployed with SAM
  • Javalin-based microservices
  • OpenPGP key management flows (PGPainless + server-side hardening)
  • Google Client-Side Encryption (CSE) integrations
Available for ongoing or short focused engagements.

Selected engagements

  • FlowCrypt — Kotlin security engineering on OpenPGP key-management and Google Client-Side Encryption (CSE); AWS Lambda/RDS migration and SAM deployments.
  • Colleagues Matrixx — Spring Boot API, mutual TLS authentication; SQS integration; MVP delivered on time through lockdowns.
  • BP — REST APIs (Spring Boot), Azure AD/OIDC; delivered agile proof-of-concepts demonstrating how small, focused teams can outpace large corporate processes.

Contact

Email
[email protected]
LinkedIn
linkedin.com/in/julian-bell-dev
Native English speaker. Perth, Western Australia.