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Flocker

Founding Backend Engineer – Marketplace and Logistics

Flocker

Founding Backend Engineer designing and building APIs and backend systems for Flocker. Working in a startup to launch their public iOS/Android app.

Posted 5/25/2026full-timeRemote • New York • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies
AWSCloudDjangoDynamoDBFlaskMySQLNoSQLPostgres

About the role

Key responsibilities & impact
  • Design, build, and maintain Flocker’s backend services and APIs (FastAPI + PostgreSQL, migrating to DynamoDB over time).
  • Implement authentication, session management, and secure cookie flows (FastAPI Users + CloudFront).
  • Develop and scale real-time data pipelines (Kinesis, Lambda, S3) for interaction logging and personalization.
  • Build and optimize media handling pipelines (image/video upload, compression, CDN delivery via CloudFront).
  • Architect and tune database schemas (Postgres → DynamoDB single-table design) with focus on cost-efficient scale.
  • Collaborate with mobile/frontend engineers to deliver seamless, low-latency user experiences.
  • Engage in the full software development lifecycle: design, coding, testing, deployment.
  • Work in a fast-moving, agile startup environment — iterating quickly and adjusting priorities based on learning and feedback.

Requirements

What you’ll need
  • 5+ years designing, building, and scaling backend systems to millions of users.
  • Expert in modern backend development (FastAPI, Django, Flask, or similar).
  • Proven ability to build and launch products (startup, side project, or even a failed venture).
  • Experience with relational databases (Postgres/MySQL) and exposure to NoSQL systems.
  • Track record of shipped products or platforms we can see live today.
  • Leadership ability, self-motivation, and comfort navigating ambiguity.
  • Ready to operate with founder-level ownership and commitment.
  • Bonus: Experience with real-time data pipelines, cloud infrastructure (AWS), or consumer apps.
  • Bonus: Demonstrated experience building or scaling marketplace platforms with integrated logistics flows (matching, routing, ticketing, or fulfillment systems). e.g. Uber, Lyft, Airbnb, or Doordash.

Benefits

Comp & perks
  • Compensation: Salary plus equity
  • Opportunity to be part of a dynamic startup environment

ATS Keywords

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Hard Skills & Tools
FastAPIPostgreSQLDynamoDBKinesisLambdaS3image handlingvideo handlingCDN deliverybackend development
Soft Skills
leadershipself-motivationnavigating ambiguitycollaborationadaptabilityproblem-solvingcommunicationownershipcommitmentagility