Senior Fullstack Software Engineer

Senior Fullstack Software Engineer - Monetization

Location: Soho, NYC / Hybrid
Department: Engineering

About Flowcode

Flowcode is the leading offline-to-online conversion platform, powering personalized consumer experiences through dynamic QR codes, AI-powered landing pages, and real-time analytics. We partner with the world’s most iconic brands across sports, media, retail, and enterprise to transform consumer engagement in the real world. Backed by top-tier investors, Flowcode is scaling rapidly as we define the category of offline identity.

Our mission is simple: instantly connect fans to brands IRL.

The Role

We’re looking for a Senior Fullstack Software Engineer to help architect, build, and scale the next generation of our Flowcode 2 Platform. You will join our Monetization pod with a focus user activation, platform monetization and ePLG experiences. You’ll work across the stack — from designing performant APIs and data models to building intuitive user interfaces that bring our product vision to life.

As one of the senior engineers on a small but highly capable team, you’ll own medium to large sized features, drive technical execution, contribute to a delivery focused environment, and mentor others. You’ll balance hands-on engineering with architectural thinking, helping us move fast while maintaining reliability, performance, and code quality.

This is an ideal role for a problem-solver who values simplicity over complexity, and approaches engineering with pragmatism and curiosity.

What You’ll Do

• Design, build, and maintain scalable features across a modern front-end framework and backend services.


• With support, own key features end-to-end, from data design to user-facing experiences.


• Architect for growth — help drive your pods’s technical roadmap and shepherd established engineering best practices.


• Collaborate across teams with product, design, and data to deliver measure, deliver and grows features quickly and iteratively.


• Write clean, reliable, and maintainable code, with strong attention to performance, best practices and developer experience.


• Mentor engineers and help elevate technical execution across you pod.


• Stay pragmatic — balance ideal engineering with the realities of speed, customer needs, and startup resource constraints.

What We’re Looking For

• 5–7+ years of experience building and shipping production-quality software across the stack.


• Proficiency in at least one modern backend language (e.g., Go, Python, C#,, Java).


• Strong experience with React, Next.js, or other modern front-end frameworks.


• Deep understanding of web architecture, API design, and data modeling in relational and/or NoSQL databases.


• Familiarity with cloud environments (AWS, GCP, or similar) and containerized deployment (Docker, Kubernetes).


• Commitment to code quality, with solid grounding in design patterns, testing, and CI/CD.


• Strong grasp of scalability and performance — able to make informed tradeoffs between speed and correctness.


• Excellent communication skills and a collaborative mindset.


• A builder’s mentality — comfortable taking initiative and owning outcomes from design through production.

Why Join Flowcode?

• Category creation: Help define a new category at the intersection of offline and online identity.


• Impact at scale: Shape experiences that touch millions of consumers across global brands.


• Elite team: Work alongside high-caliber operators from the world’s best companies.


• Ownership: Lead a mandate with C-level visibility and board-level impact.

Flowcode is not for everyone. We hire with a pinhole lens — only those with the rare combination of intellectual horsepower, execution velocity, and uncompromising drive will thrive here. If you are seeking to operate at the highest levels of performance and impact, we want to meet you.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

A successful candidate’s starting pay will be determined based on the role, job-related skills, experience, qualifications, work location, and market conditions. The current range for this role is up to $175k - $225K OTE plus equity.