Senior Fullstack Software Engineer

Flowcode•New York, NY

64d•Hybrid

About The Position

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. 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.

Requirements

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.

Responsibilities

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.

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