Mid-Level Full Stack Engineer – Asset Hub

SimpleClosure

Mid-Level Full Stack Engineer developing Asset Hub for SimpleClosure focusing on asset marketplace solutions. Building full-stack features and collaborating cross-functionally in a dynamic environment.

Posted 7/22/2026full-timeNew York City • New York • 🇺🇸 United StatesMid-LevelSenior💰 $120,000 - $170,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development with a focus on building and maintaining scalable features using React, TypeScript, and Next.js. Proficient in integrating backend services and APIs while ensuring security and privacy in handling sensitive data.

Highest-signal resume keywords

ReactTypeScriptNext.jsPythonAPI Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack DevelopmentServer-Side LogicRelational DatabasesNoSQL DatabasesAI Development Tools

Soft Skills

Cross-Functional CollaborationClear CommunicationProactive Problem SolvingAdaptability

Industry Keywords

Marketplace ProductsB2B ProductsData-Heavy ProductsCodebasesProprietary Datasets

Tech Stack

Tools & technologies

JavaScriptNext.jsNoSQLPythonReactTypeScript

About the role

Key responsibilities & impact

Design, build, and maintain full-stack features across Asset Hub — the buyer portal for browsing and licensing codebases and workspaces, domains, and the internal tools behind them.
Implement clean, maintainable frontend experiences using Next.js, React, and TypeScript.
Write high quality, well-tested code and use AI tooling to move faster.
Build and integrate backend services, APIs, and data models to support asset selling and buying and to connect third-party and partner systems.
Replace manual internal processes — asset intake, cataloging, pricing, deal tracking — with tooling that lets the team scale without adding headcount.
Own features end to end, from technical design through deployment and iteration; debug, troubleshoot, and resolve issues in production.
Work with sensitive material — codebases, workspace exports, and proprietary datasets — with strong attention to security, privacy, and PII handling.
Collaborate effectively with Product, Design, and the GM of Asset Hub to translate ambiguous requirements into scalable technical solutions.

Requirements

What you’ll need

3–5 years of professional software engineering experience, ideally in a startup or fast-paced environment.
Strong experience with React and TypeScript; Next.js or similar frameworks preferred.
Experience building server-side logic and APIs and integrating with third-party services; proficiency in Python.
Familiarity with relational and/or NoSQL databases.
Comfortable taking projects from concept through deployment and iteration in an ambiguous, 0-to-1 environment.
Proactive, thoughtful engineer who can navigate ambiguity and make sound technical decisions.
Strong team player who enjoys working cross-functionally, with clear written and verbal communication.
Thrives in an evolving startup environment with shifting priorities.
Experience using AI dev tools (e.g., Copilot, Cursor, Claude Code) as part of your regular workflow.
Nice to have: marketplace, B2B, or platform products; data-heavy products; experience working with codebases/repositories or large datasets.

Benefits

Comp & perks

Competitive equity package
Comprehensive health benefits, including medical, dental, and vision
Life insurance
Unlimited paid time off
Flexible hybrid work environment in New York City, Midtown (currently 2 days per week in office)
Two company-wide offsites each year
401(k) with Traditional and Roth options, with immediate eligibility