1888 senior backend engineer

Modality: Remote – Worldwide

Schedule: Monday to Friday, 8 hours – Pacific Time

Level: Senior | English: Advanced

We are looking for a Senior Backend Engineer to build and operate a production multi-tenant platform. You will own solutions end-to-end—from design and development to deployment, validation, and monitoring—working primarily with TypeScript, PostgreSQL/Supabase, and AWS.

Requirements

Senior-level Backend Engineering experience with production systems.

Strong PostgreSQL expertise: Schema Design, Migrations, and Row-Level Security (RLS).

Experience with Multi-Tenant Architecture, TypeScript, Serverless, and REST APIs.

Strong integration experience: OAuth, webhooks, idempotency, and reconciliation.

Strong AWS experience: Lambda, S3, RDS/Aurora, SQS, API Gateway, CloudWatch, IAM, VPC, Secrets Management, and AWS Console/CLI.

Experience with CI/CD, infrastructure management, and production deployments.

Strong autonomy, end-to-end ownership, and ability to proactively identify technical risks.

Advanced English proficiency.

Nice to Have: Supabase, React, iOS API contracts, Python, ML/MLOps, model versioning, EC2 Spot/GPU workloads, PowerShell, spec-driven development, security/PII, payment/FinTech integrations, and video/streaming platforms.

Responsibilities

Build and maintain multi-tenant APIs and backend services, ensuring secure data isolation with PostgreSQL RLS.

Design schemas, migrations, and secure APIs for web, iOS, ML, and partner integrations.

Develop Serverless solutions with TypeScript.

Own third-party integrations: OAuth/authentication, webhooks, idempotency, reconciliation, and vendor APIs.

Manage AWS services: Lambda, S3, RDS/Aurora, SQS, API Gateway, CloudWatch, IAM, VPC, and Secrets Management.

Improve CI/CD, environments, monitoring, health checks, and alerting.

Support ML/MLOps, model versioning, and cloud training infrastructure.

Execute infrastructure/service migrations without disru