Full Stack Software Engineer

About this role

Fullstack Software Engineer – Growth & Subscriptions
Location:
NYC / Hybrid


Department:
Engineering


About The Company
Soni's client is a fast-growing technology company building tools that connect real-world interactions with digital experiences. Their platform helps businesses engage users through interactive touchpoints, data-driven insights, and customizable experiences. They work with well-known brands across multiple industries and are backed by leading investors.


Their mission: make it easy for people to move seamlessly between the physical and digital world.


The Role
We’re looking for a Fullstack Software Engineer to help build and evolve core product features focused on user activation, subscription workflows, and growth-oriented experiences. You’ll work across the stack, contributing to both backend services and frontend applications that directly impact how users discover, adopt, and upgrade our platform.


You’ll join a small, collaborative team and take ownership of meaningful features, from design through production. This role is ideal for an engineer who enjoys building product-facing systems, learning from more experienced teammates, and growing their technical scope over time.


What You’ll Do

• Design, build, and maintain features across modern frontend frameworks and backend services.
• Own smaller to mid-sized features end-to-end, with support from senior engineers.
• Contribute to systems that support user onboarding, subscriptions, billing flows, and feature access.
• Collaborate closely with product, design, and data teams to ship improvements quickly and iteratively.
• Write clean, maintainable, and well-tested code.
• Participate in code reviews and contribute to shared engineering standards.
• Balance technical best practices with practical product needs and timelines.

What We’re Looking For

• 3–5 years of experience building and shipping production software.
• Experience with at...