Production API and AWS Platform for a Consumer Camera-Hardware Company

Role: Sole engineer — backend, cloud infrastructure and release pipeline
Stack: NestJS · TypeScript · PostgreSQL · TypeORM · AWS · Terraform · Terragrunt · GitHub Actions

Built the production backend for a mobile camera-accessory platform end to end, and own everything underneath it. Ongoing engagement; client name withheld.

What I built

• REST API in NestJS and TypeScript on PostgreSQL, with OpenAPI documentation generated from the code via Swagger
• Authentication and account management: JWT access and refresh token rotation, password reset and email verification, with transactional email delivered through SendGrid
• Apple App Attest integration, so the API can verify that requests originate from genuine instances of the iOS app
• Apple Universal Links, so password-reset and verification emails deep-link straight into the app
• Product ownership and warranty registration APIs covering document upload and review workflows
• Every schema change shipped as a reviewed TypeORM migration

Infrastructure and delivery

• The entire AWS footprint written as code in Terraform and Terragrunt — ECS Fargate, Application Load Balancer, RDS PostgreSQL, Secrets Manager and ECR — across fully isolated staging and production environments
• GitHub Actions CI/CD on keyless OIDC authentication, with automated staging deploys and a manual approval gate on production
• An AWS SageMaker training pipeline and S3 dataset structure supporting an on-device product classification model