Senior Fullstack Engineer

Vendelux https://vendelux.com/ is building the category-defining platform for event marketing intelligence. Events are one of the largest and most impactful marketing channels, yet historically one of the least measurable. Vendelux brings transparency and performance to this space — helping companies discover, evaluate, and optimize their event strategy with data. Our platform powers thousands of event decisions by delivering proprietary, AI-driven insights across hundreds of thousands of events globally. At the core of our platform is a robust ecosystem of event organizer partnerships — where organizers share first-party data, enabling richer insights for customers while receiving benchmarking and audience intelligence in return. From identifying the highest ROI conferences to enabling targeted meeting programs, Vendelux helps companies turn events into a predictable and scalable growth engine. In addition, Vendelux Meetings extends our platform by turning insights into pipeline — using AI to identify high-value attendees and proactively book 1:1 meetings between our customers and their ideal prospects at events. This enables go-to-market teams to drive measurable ROI and maximize every event interaction. Founded in 2021, Vendelux is a Series B SaaS company backed by top-tier investors including FirstMark. We partner with many of the fastest-growing companies in the world, and our team includes leaders from Bain, ZoomInfo, Shutterstock, FanDuel, Compass, Airbnb, Forter and beyond. ________________ Data-driven marketers have plenty of tools to optimize their digital ad spend and verify that their ads showed where they were supposed to. We build the same kinds of tools, but for data-driven event marketers, who’ve previously been limited to scanning conference badges at their booth. We're growing, and looking for Senior Software Engineers to ship critical features and make key drive key infrastructure changes. This is a full-time position based out of NYC. We have a NYC HQ, and our preference is to have engineers come in a hybrid set up with an expectation of 4 days in office. It reports directly to our Head of Engineering. RESPONSIBILITIES - Own substantial user-impacting projects from design to build to roll out - Participate in code and system design reviews - Contribute improvements to our internal processes and dev tools - Understand our users and their needs, and contribute to product discovery and prioritization with our leadership, product management, and design teams - Help grow the team via hiring and mentoring activities TECH STACK - Frontend: Typescript, React, MUI/Shadcn, Node.js - Backend: Python, Django, Typescript, Node.js, MySQL, Postgres, AWS, GCP - Data: Python, Dagster, Snowflake - Other tools: Linear, GitHub, Datadog, Cursor / Claude Code QUALIFICATIONS - 5+ years of experience building complex applications using a modern language, like Python and/or Typescript - Track record of shaping and shipping valuable features - Track record of driving high-leverage improvements to infrastructure and process - Judgment to take on technical debt and risk where appropriate - Comfort with modern AI tools to accelerate development - Strong written, verbal, and presentation skills NICE TO HAVE - Previous startup experience - DevOps or platform/infrastructure experience (or deep interest) - Experience with AI prototyping tools like v0, Lovable, Replit, etc. Not all candidates will check all of the requirements listed above and that’s ok! We are open to great people from non-traditional backgrounds. Vendelux is proud to be an equal opportunity workplace. We are committed to equal opportunity regardless of race, color, ancestry, religion, gender, gender identity, parental or pregnancy status, national origin, sexual orientation, age, citizenship, marital status, disability, or veteran status.