Chief Platform Architect & Reliability Lead

Hammerjack Pty Ltd; Philippines; Remote; PHP 2,400,000 - 3,600,000; Full time

Job summary

Hammerjack Pty Ltd in the Philippines is seeking a senior software leader to guide the production platform for a multi-tenant B2B SaaS product. You will define canonical architecture, harden client workflows, and ensure secure, reliable releases.

The role requires hands-on mastery of TypeScript, Next.js, Python, FastAPI, PostgreSQL, and SQL, with strong governance of migrations, observability, incident response, and disaster recovery.

Qualifications

• Eight or more years building production software with senior, staff, or principal-level responsibility.
• Shipped and operated a multi-tenant B2B SaaS product.
• Strong proficiency in TypeScript, Next.js, Python, FastAPI, Postgres, SQL, and row-level security.
• Proven judgment in multi-tenant architecture, tenant isolation, secrets management, least privilege, security, and auditability.
• Experience with durable queues, retries, idempotency, dead-letter handling, backpressure, and ambiguous-write recovery.
• Experience managing external-provider quotas, throttling, failures, and cost controls.
• Ownership of database migrations, production observability, incident response, rollback, and disaster recovery.
• Hands-on with load, soak, integration, and end-to-end testing.
• Ability to guide AI coding agents without lowering standards.
• Willingness to simplify inherited systems and remove duplication.
• Operated production systems personally, not merely built features.

Responsibilities

• Establish canonical production architecture, repo, data model, and release path.
• Freeze and harden top three end-to-end client workflows.
• Close gaps in tenant isolation, integrations, testing, recovery, security, and capacity.
• Consolidate or retire duplicate queues, surfaces, scripts, and pipelines.
• Own production releases, canaries, rollbacks, migrations, and incident response.
• Enforce quotas, cost budgets, idempotency, backpressure, and telemetry.
• Direct AI coding agents through bounded tickets and review output.
• Translate product requirements into executable acceptance contracts.
• Produce a capacity/economics assessment for 1,000 clients and roadmap.
• Create a technical roadmap separating hardening from new features.

Skills

TypeScript

Next.js

Python

FastAPI

PostgreSQL

SQL

Row-level security

Multi-tenant architecture

Tenant isolation

Security and auditability

Durable queues

Backpressure

Ambiguous-write recovery

External-provider quotas

Migrations and DR

Production observability

AI coding agents supervision

Simplifying systems

Operated production systems

Job description

Hammerjack Pty Ltd in the Philippines is seeking a senior software leader to guide the production platform for a multi-tenant B2B SaaS product. You will define canonical architecture, harden client workflows, and ensure secure, reliable releases.

The role requires hands-on mastery of TypeScript, Next.js, Python, FastAPI, PostgreSQL, and SQL, with strong governance of migrations, observability, incident response, and disaster recovery.