# Staff Software Engineer, Core Platform

**Company:** [FloQast](https://hotfix.jobs/companies/floqast)
**Location:** San Jose, CA
**Role:** Backend Engineering
**Experience:** 10+ years
**Skills:** TypeScript, Kafka, Temporal, MongoDB, AWS, Distributed Systems, Backend Architecture, Authentication, Authorization, Data Pipelines
**Posted:** 2026-05-20

> Lead the design, architecture, and evolution of scalable backend core platform systems including data platforms, core services, auth frameworks, Kafka event streaming, and Temporal orchestration. Requires 10+ years backend engineering experience with deep expertise in TypeScript, distributed systems, and B2B SaaS platforms.

## Job Description

## What You'll Do

**Core Platform Architecture:** Lead the design and implementation of highly scalable, distributed core services and backend platform components using TypeScript and modern cloud-native technologies.

**Orchestration & Messaging:** Architect and maintain reliable asynchronous architectures, utilizing event streaming (Kafka) and complex workflow orchestration (Temporal) to power critical business logic.

**Platform Security Systems:** Own the evolution and scaling of our enterprise-grade authentication and authorization frameworks, ensuring seamless and secure data access layers.

**End-to-End Data Engineering:** Design, optimize, and scale complex backend data platforms and document-based storage systems (MongoDB) to handle high-throughput workloads.

**Technical Leadership & Standards:** Establish clean coding patterns, robust architectural standards, and best practices for the backend engineering organization while mentoring junior and senior engineers.

**Cross-Functional Influence:** Partner closely with Product, Security, and Core Infrastructure teams to align platform capabilities with long-term product roadmaps and strategic company goals.

## What You'll Bring

- 10+ years of software engineering experience with a deep, specialized focus on "pure" backend engineering, distributed systems, and core platform development.
- Expert-level proficiency with TypeScript alongside deep production experience within our modern ecosystem stack (Temporal, Kafka, MongoDB, and AWS).
- Startup DNA: Proven experience delivering high-impact architectural solutions within fast-paced, high-growth Series B or Series C environments.
- Industry Domain Knowledge: A strong background in the B2B SaaS space, with a track record of building platforms that scale alongside growing enterprise customer demands.
- System Design Expertise: Demonstrated success building complex, end-to-end data pipelines, identity/access systems, and high-availability core services from scratch.
- Clear Engineering Focus: A profile centered squarely on core backend application architecture rather than frontend/full-stack development or infrastructure-heavy/DevOps operations.
- Strategic Communicator: An effective collaborator who can easily break down complex architectural technical concepts and influence both technical and non-technical stakeholders.

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**Apply:** https://hotfix.jobs/jobs/6d2e82f5-4c97-4e2f-a91f-cf7c926bfb78
**Canonical:** https://hotfix.jobs/jobs/6d2e82f5-4c97-4e2f-a91f-cf7c926bfb78