Ex YC Founder - BE Engineer (SF)

Pragmatike

$120K — $180K *
Enterprise Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of professional software engineering experience
  • Strong backend engineering experience with production systems
  • Advanced proficiency in TypeScript and modern development practices
  • Experience with scalable APIs and cloud-native applications
  • Understanding of databases, data modeling, and system architecture
  • Experience with real-time systems or event-driven architectures
  • Ability to work independently in ambiguous settings

Responsibilities

  • Design, build, and maintain scalable backend systems and APIs
  • Develop and ship full-stack features from backend to customer interfaces
  • Build infrastructure for high-performance, real-time applications
  • Collaborate with engineering and product teams to deliver capabilities
  • Design scalable systems for growing product complexity
  • Enhance platform reliability and monitoring tools
  • Contribute to architectural decisions and long-term strategies

Benefits

  • Relocation assistance and visa sponsorship discussed during the interview
  • Significant ownership of projects
  • Direct access to decision-makers
  • Collaborative onsite work environment
  • Influence on architecture and product direction
  • Opportunity to work with exceptional engineers
  • Engagement in solving complex technical challenges
Full Job Description
Location: San Francisco, CA (Onsite)
Start Date: ASAP
Employment Type: Full-time
Relocation Assistance and Visa Sponsorship: Can be discussed with our HR team during the first interview.

We're looking for a Senior Full Stack Engineer with a strong backend focus who thrives in fast-paced environments and enjoys taking ownership of complex technical systems from architecture through production. This role is ideal for someone who combines deep backend expertise with product-minded engineering and enjoys solving challenging infrastructure and scalability problems.

You'll work closely with founders, engineering leaders, and product teams to build the systems that power next-generation AI products, helping shape both the technical foundation and future direction of the platform.

What You'll Do
  • 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.


What We're Looking For
  • 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.


Nice to Have
  • Experience with edge computing, serverless architectures, or distributed platforms.
  • Exposure to AI-powered products, LLM infrastructure, or agent-based systems.
  • Experience designing highly available systems that support significant scale.
  • Familiarity with observability, monitoring, tracing, and incident management practices.
  • Experience in startup or high-growth environments.
  • Full-stack experience building customer-facing product features.
  • Experience helping establish engineering standards in early-stage teams.


This is an opportunity to join a highly ambitious team solving complex technical challenges while building products used by a rapidly growing customer base.

You'll have significant ownership, direct access to decision-makers, meaningful influence on architecture and product direction, and the opportunity to work alongside exceptional engineers in a collaborative onsite environment.

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