Software Engineer - Node / React

Simplex, Inc.
New York, NY, United States
23 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
5 years minimum
Working hours
Regular working hours
Job source

Tech stack

Application Programming Interfaces (APIs) Amazon Web Services Big Data Database Models Programming Tools PostgreSQL Node.Js Next.js Software Engineering TypeScript Virtual Memory Cloud Platform System
+8 more
ReactJS AWS Lambda Agentic-AI Event Driven Architecture Material UI Information Technology Terraform Serverless Computing

Job description

  • Build and own new user-facing features end-to-end, from database models to UI components
  • Continuously improve observability across existing systems - analytics, monitoring, and alerting
  • Collaborate with product and engineering to architect key differentiators, including embedded fintech products and AI agents to help merchants manage their stores
  • Build CI/CD pipelines and developer tooling (e.g., feature environments) that increase development velocity
  • Help shape engineering processes to support building a world-class product

Tech Stack

Familiarity with every tool isn’t required, but candidates should have the foundational knowledge to understand what powers them under the hood:

  • Node
  • React
  • Next.js deployed on Vercel
  • Typescript
  • AWS (particularly RDS)
  • PostgreSQL
  • Terraform or equivalent infrastructure-as-code tooling

Requirements

As a Senior Engineer, you’ll be expected to bring strong engineering principles backed by at least 5 years of experience. The ideal candidate:

  • Has a strong computer science and programming foundation - has read Designing Data-Intensive Applications
  • Is a craftsperson who deeply cares about the quality of their output and understands the long-term costs of shortcuts
  • Builds with the end user and longevity in mind - knows how to design abstractions and APIs that are a pleasure for both customers and teammates to use
  • Communicates effectively to drive clarity and alignment across the organization - able to translate product requirements into technical challenges and vice versa
  • Is genuinely passionate about software engineering and dives deep into topics that interest them, whether that’s the Node.js Event Loop or how virtual memory works at the OS level
  • Has hands-on experience with serverless architectures - comfortable designing and deploying serverless functions and event-driven systems in cloud environments (e.g., AWS Lambda, Vercel Edge Functions, or equivalent)

Benefits & conditions

  • Salary: $180K-$220K + meaningful equity, depending on experience
  • Unlimited PTO
  • Full benefits package: medical, dental, vision, 401(k), transportation, and more

Interview Process

  1. One or two 30-minute introductory calls with the engineering team
  2. Onsite interview consisting of: 3.
  • 1-hour system design exercise
  • 45-minute meeting with the product team and company leadership 4. Offer

Apply for this position

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