Full Stack Engineer

Harnham is recruiting for an unnamed venture-backed technology company that builds a platform for independent businesses. The Full Stack Engineer will build and scale customer-facing products across frontend and backend systems, collaborating with Product and Design and owning projects from concept through deployment and support.

Responsibilities

• Building and maintaining customer-facing web applications using React and TypeScript
• Developing scalable backend services and APIs using Python and Django or Flask
• Collaborating closely with Product Managers and Designers to deliver new features
• Owning projects from concept and architecture through to deployment and support
• Designing and implementing integrations with internal and external systems
• Contributing to platform scalability, performance, and reliability
• Building solutions across onboarding, booking workflows, client management, communications, and operational tooling
• Supporting engineering best practices, testing, and code quality initiatives

Preferred

• Experience in SaaS, marketplace, consumer technology, or high-growth product-led environments is advantageous
• SaaS Industry Experience
• Marketplace Experience
• Consumer Technology Experience
• High-Growth Product-Led Experience

Benefits

• Meaningful equity package
• Comprehensive benefits
• Hybrid working model with 3 days per week in the New York City office
• Clear engineering leveling framework
• Opportunity to progress through Senior and Staff engineering levels
• High degree of product ownership and technical influence
• Collaborative, growth-focused engineering culture
• Exposure to a rapidly scaling technology platform

Company

• Data and AI recruitment, staffing, and training services
• London, England, GBR
• https://www.harnham.com/us
• Founded in 2006
• 201-500 employees

Qualifications

• Strong commercial experience as a Full Stack Engineer building modern web applications
• Strong frontend development experience using React and TypeScript
• Strong backend development experience using Python
• Experience working with Django, Flask, or similar backend frameworks
• Experience building and consuming REST APIs
• Knowledge of relational databases and ORM-based development
• Experience developing scalable, customer-facing products
• Understanding of application architecture, testing, and software engineering best practices
• Ability to work cross-functionally with Product, Design, and Engineering stakeholders
• Demonstrated ownership mindset and ability to operate in a fast-paced environment
• Experience in SaaS, marketplace, consumer technology, or high-growth product-led environments is advantageous

Required skills

• Application Architecture, Django, Flask, Marketplace Technology, Object-Relational Mapping (ORM), Python, REST APIs, React, Relational Databases, SaaS, Software Testing, TypeScript

Experience

• Mid level