Ex YC Founder – BE Engineer

Pragmatike

Senior Full Stack Engineer building complex technical systems at a YC-backed AI startup. Collaborating with founders and product teams to shape the future direction of the platform.

Posted 6/16/2026full-timeSan Francisco • California • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

CloudDistributed SystemsTypeScript

About the role

Key responsibilities & impact

Design, build, and maintain scalable backend systems and APIs powering core product functionality.
Develop and ship full-stack features from backend services through to customer-facing interfaces.
Build reliable infrastructure that supports high-performance, real-time applications.
Collaborate closely with engineering, product, and leadership teams to define and deliver new capabilities.
Design systems that scale efficiently as product usage and complexity grow.
Improve platform reliability, observability, monitoring, and operational tooling.
Contribute to architectural decisions and long-term technical strategy.
Optimize performance, security, and developer experience across the platform.
Help establish engineering best practices and contribute to a strong culture of technical excellence.

Requirements

What you’ll need

5+ years of professional software engineering experience.
Strong backend engineering experience building and operating production systems.
Advanced proficiency with TypeScript and modern backend development practices.
Experience building scalable APIs, distributed systems, and cloud-native applications.
Strong understanding of databases, data modeling, and system architecture.
Experience working with real-time systems, event-driven architectures, or asynchronous processing.
Ability to operate independently and thrive in ambiguous environments.
Strong problem-solving skills and systems-thinking mindset.
Excellent communication skills and collaborative approach to engineering.

Benefits

Comp & perks

Relocation Assistance and Visa Sponsorship can be discussed with HR during the first interview.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

TypeScriptbackend developmentAPIsdistributed systemscloud-native applicationsdatabasesdata modelingsystem architecturereal-time systemsevent-driven architectures

Soft Skills

problem-solvingsystems-thinkingcommunicationcollaborationindependenceadaptability