Fullstack Engineer – Backend Leaning

Pinwheel

Fullstack Engineer focusing on backend development for Pinwheel, enhancing financial services user experience. Collaborating across teams to build impactful products and APIs.

Posted 4/23/2026full-timeNew York City • New York • 🇺🇸 United StatesMid-LevelSenior💰 $160,000 - $190,000 per yearWebsite

Tech Stack

Tools & technologies

DjangoPythonReactRuby on RailsVue.js

About the role

Key responsibilities & impact

Deeply understand our customer needs and design systems to solve them
Build, scale, and evolve the data models, services, and systems that power our APIs
Design and ship impactful new functionality in our products, especially focused on our internal and customer-facing back-end APIs
Maintain and improve our Python-based microservice stack
Support (and at times lead) the development of new products in the Pinwheel ecosystem, balancing high product velocity with quality and reliability
Contribute to iterative technical quality: we pay down tech debt while we’re working on new projects and expect you to be a leader in the responsible pay-down of tech debt
Create and improve tooling, processes, and engineering standards across the team
Mentor engineers and help the team grow

Requirements

What you’ll need

5+ years of experience building and maintaining back-end or full-stack applications: data modeling, application logic, and API design
Prior experience working at an early-stage startup or small tech company
Deep expertise with modern back-end languages/frameworks (e.g. FastAPI, Django, Rails, Gin)
At least some experience working with modern frontend web frameworks (React, Vue, etc.)
Prior experience working on API-based products is a big plus
Played key implementation roles in projects with multiple teams and engineers
Desire to learn new systems and technology as our business evolves
Ability to design systems and evaluate the tradeoffs in scalability, reliability, performance, and maintainability
Passion for working closely with customers
Creativity, empathy, and a drive for continuous improvement

Benefits

Comp & perks

Great compensation & equity packages
Full medical, dental, and vision benefits
Life & short-term disability insurance
Generous flexible PTO policy that prioritizes recharge and balance
Paid parental leave
401K for retirement planning
Mentorship opportunities
Free Citibike membership
Pet friendly offices and Zoom spaces

ATS Keywords

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Hard Skills & Tools

PythonFastAPIDjangoRailsGinAPI designdata modelingapplication logicmicroservicesfront-end frameworks

Soft Skills

mentoringcreativityempathycontinuous improvementcustomer focusleadershipcollaborationproblem-solvingadaptabilitycommunication