JustAI

1 month ago

Senior Platform Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 9 hours agoStatus: Live

Job Summary

Join a YC-backed startup building a multi-tenant AI marketing platform. Own the layer between infrastructure and product, designing platform primitives, APIs, and SDKs for scalable campaign execution. You’ll shape isolation, scheduling, reliability, and developer experience across tenants to empower product teams.

Location: San Francisco

Workplace: Onsite

Employment Type: Full time

Job Function: DevOps, Cloud & Infrastructure

Key Responsibilities

•Design and build the platform primitives that power campaign execution: durable workflows, per-tenant isolation, scheduling, and state management.
•Define the API and SDK contracts between infra and product, and keep them clean as the product surface grows.
•Build for multi-tenancy from the ground up, including isolation, fairness, quotas, and safe rollout of per-customer logic.
•Own reliability and correctness of the execution path: idempotency, retries, and exactly-once semantics where it matters.
•Partner with product engineers to turn ambiguous product needs into stable platform capabilities.

Pay and Benefits

Salary: USD 130,000 - 250,000 annually

Equity and Bonus:Equity

Key Requirements

•5+ years building large-scale distributed systems, with a track record of systems that sit between infrastructure and product (platform/API/SDK teams, execution engines, workflow orchestration, internal platforms).
•Deep experience with stateful, concurrent systems, with a strong grasp of consistency, idempotency, and failure modes.
•You think in abstractions and contracts, and you\'ve built interfaces other engineers depend on.
•Comfort operating across the stack, from low-level systems concerns up to the developer experience of the people consuming your platform.
•We care more about how you think about systems than which specific tools you\'ve used.

Experience:5+ yearsMarketingSaaSOpen sourceDeveloper tools

Skills:PythonTypeScriptDistributed systemsMulti-tenantAPIsSDKsOrchestration

Languages:English

Tech Stack:PythonTypeScript

Eligibility

Work Authorization:Authorization required. Sponsorship not provided.

Company Brief

JustAI

Develops customizable AI-powered chat assistants and conversational interfaces for websites and businesses, enabling automated customer support, lead capture, and interactive experiences using natural language understanding and deployment tools.

Industry: AI & Machine Learning

Website

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JustAI

1 month ago

Senior Platform Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 9 hours agoStatus: Live

Job Summary

Location: San Francisco

Workplace: Onsite

Employment Type: Full time

Job Function: DevOps, Cloud & Infrastructure

Key Responsibilities

•Design and build the platform primitives that power campaign execution: durable workflows, per-tenant isolation, scheduling, and state management.
•Define the API and SDK contracts between infra and product, and keep them clean as the product surface grows.
•Build for multi-tenancy from the ground up, including isolation, fairness, quotas, and safe rollout of per-customer logic.
•Own reliability and correctness of the execution path: idempotency, retries, and exactly-once semantics where it matters.
•Partner with product engineers to turn ambiguous product needs into stable platform capabilities.

Pay and Benefits

Salary: USD 130,000 - 250,000 annually

Equity and Bonus:Equity

Key Requirements

•5+ years building large-scale distributed systems, with a track record of systems that sit between infrastructure and product (platform/API/SDK teams, execution engines, workflow orchestration, internal platforms).
•Deep experience with stateful, concurrent systems, with a strong grasp of consistency, idempotency, and failure modes.
•You think in abstractions and contracts, and you\'ve built interfaces other engineers depend on.
•Comfort operating across the stack, from low-level systems concerns up to the developer experience of the people consuming your platform.
•We care more about how you think about systems than which specific tools you\'ve used.

Experience:5+ yearsMarketingSaaSOpen sourceDeveloper tools

Skills:PythonTypeScriptDistributed systemsMulti-tenantAPIsSDKsOrchestration

Languages:English

Tech Stack:PythonTypeScript

Eligibility

Work Authorization:Authorization required. Sponsorship not provided.

Company Brief

JustAI

Industry: AI & Machine Learning

Website