Stacksync

Senior Full-Stack Engineer: Infrastructure & Distributed Systems

San Francisco, US Full-time

Build the infrastructure layer powering enterprise AI automation

Enterprise software integrations are still painfully fragile: workflows break silently, APIs fail unpredictably, systems drift out of sync, and teams waste countless hours maintaining infrastructure that was never designed for real-time operations at scale. For years, most data companies focused primarily on analytics because the underlying integration and operational tooling was too broken, unreliable, or difficult to use for powering critical business operations in production.

You can think of Stacksync as Zapier for enterprise systems, but built for real-time and mission-critical operations at scale.

Our platform powers mission-critical operations:

  • supply chains
  • manufacturers
  • logistics companies
  • healthcare organizations
  • financial operations
  • ecommerce businesses
  • enterprise sales organizations

When our systems run, orders move, invoices sync, warehouses operate, contracts renew, revenue gets recognized, and business workflows execute in real time.


What Makes This Role Different

We solve difficult distributed systems problems involving:

  • real-time synchronization
  • queues and event-driven systems
  • distributed workflows
  • large-scale data movement
  • API orchestration
  • Postgres-heavy architectures
  • unreliable third-party systems
  • EDI and enterprise connectivity
  • high-throughput infrastructure

This is not a typical CRUD SaaS role.

We are building a category-defining infrastructure company and are looking for strong product-minded engineers who want ownership over real systems, internal platforms, and infrastructure products from architecture to production operations.


This Opportunity IS for You If

  • You are a true full-stack engineer
  • You enjoy difficult engineering problems
  • You care deeply about system quality and maintainability
  • You thrive in fast-moving, high-ownership environments
  • You enjoy scaling distributed systems
  • You think like a product owner, not just an implementer
  • You naturally take initiative without waiting for permission
  • You want to build infrastructure used by real enterprise customers that power critical operations
  • You are extremely ambitious
  • You want to work with a very strong technical team

This Opportunity IS NOT for You If

  • You only enjoy building simple CRUD applications
  • You dislike operational complexity
  • You need highly structured environments
  • You avoid ownership
  • You prefer maintaining existing systems over building new ones
  • You think shipping one feature per day is “fast”
  • You are uncomfortable with ambiguity or pressure
  • You believe scaling infrastructure is mostly solved already

What You’ll Work On

Examples of problems we solve:

  • real-time bi-directional synchronization
  • distributed retries and failure recovery
  • queue scaling and orchestration
  • API rate-limit management
  • large-scale Postgres systems
  • workflow execution engines
  • observability and debugging tooling
  • schema propagation systems
  • enterprise connectivity infrastructure
  • high-volume data movement pipelines

Tech Stack

  • Python
  • React
  • Postgres
  • GCP / AWS / Azure
  • Distributed queues and workflows

What We Value Most

  • Ownership
  • Technical depth
  • Execution speed
  • Product thinking
  • Communication clarity
  • Reliability
  • Ambition
  • Fast learning speed

⚠️ Apply By Answering ⚠️

  1. What excites you about building infrastructure systems at Stacksync? (2 sentences max)
  2. Rate yourself from 0–10 on:
  • Python
  • React
  • Postgres
  • Cloud infrastructure (AWS/GCP/Azure)
  • Designing real-time systems

For each, include one concrete example demonstrating your depth.

  1. Describe the most technically challenging system you worked on:
  • Context
  • Your exact contribution
  • Why it was difficult
  • Key learnings
  1. What is one of the biggest risks or bets you’ve taken in your career or life?

🚀 Y Combinator Company Info

Y Combinator Batch: W24
Team Size: 16 employees
Industry: B2B Software and Services -> Engineering, Product and Design
Company Description: Real-time and two-way sync between CRMs and Databases

💰 Compensation

Salary Range: $80 - $180

📋 Job Details

Job Type: Full-time
Experience Level: 6+ years
Engineering Type: Backend
Time to Hire: 5

🛠️ Required Skills

Python React Distributed Systems PostgreSQL

🎯 Interview Process

* Meet with the CTO * Real-world technical scenarios (not LeetCode) * System design and architecture discussions * Production/debugging-oriented conversations