Senior Platform Engineer - Kubernetes & SaaS Infra

Anythink; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

Anythink is seeking a lead platform engineer to oversee foundational backend infrastructure for a multi-tenant SaaS. You will design, operate, and scale Kubernetes-based systems, manage IaC with Terraform, and contribute to architecture and roadmaps while owning services end-to-end.

You will work on authentication, file storage, search, payments, and database infrastructure with PostgreSQL, security, and API tooling. This role demands ownership in production and strong backend capabilities.

Qualifications

• Strong production experience managing Kubernetes clusters, workloads, networking, and observability.
• Comprehensive experience with C# and .NET.
• Deep PostgreSQL expertise, including schema design, indexing, query optimization, and row-level security.
• Experience with Terraform or an equivalent infrastructure-as-code approach.
• Background building and operating multi-tenant SaaS platforms.
• Strong REST API design skills, security fundamentals, and willingness to own backend services in production.

Responsibilities

• Design, operate, and scale Kubernetes-based infrastructure for multiple customer environments.
• Maintain Terraform configurations and reproducible deployment patterns.
• Extend API-generation capabilities that turn database models into secure REST interfaces.
• Build and scale services for authentication, file storage, search, workflow automation, and payments.
• Design PostgreSQL schemas, improve query performance, and manage replication, backups, and related database infrastructure.
• Strengthen tenant isolation and security through row-level security, field-level access controls, SSO, and audit logging.

Skills

Kubernetes operations

REST API design

Security fundamentals

Multi-tenant SaaS experience

Observability & networking

Tools

C#/.NET

Terraform

PostgreSQL

Elasticsearch

Meilisearch

Typesense

Node.js

TypeScript

Stripe Connect

Job description

Anythink is seeking a lead platform engineer to oversee foundational backend infrastructure for a multi-tenant SaaS. You will design, operate, and scale Kubernetes-based systems, manage IaC with Terraform, and contribute to architecture and roadmaps while owning services end-to-end.

You will work on authentication, file storage, search, payments, and database infrastructure with PostgreSQL, security, and API tooling. This role demands ownership in production and strong backend capabilities.