Full stack developer for sports media company --ongoing maintenance/new development

We are seeking a full-stack developer for both the ongoing maintenance of current products as well as the development of new products. We are a sports media company that creates applications that help fans be more effective when it comes to attending live sporting events. EXISTING PRODUCT DEVELOPMENT: Our first product launched last month: calendar.thestadiuminsiders.com, a custom calendar which incorporates team sports calendars (NFL, NBA, NHL, MLB, etc.) into a single view for each city. This required the integration of calendars from multiple sources in multiple formats, consolidated into a single view. Lots of moving pieces. The calendar has been developed, has successfully launched, and is very stable. But there is ongoing maintenance to do, as well as continued enhancements to make. Our calendar was built in React, Next.js, and Firebase. It also incorporates ICS feed parsing, which is critical. You need to understand these elements, as well as complex data architectures and data management. (Our advice: please don't approach your proposal by telling us about all of the pitfalls and traps waiting for us. Our entire team has worked extremely hard to build a great product, and we haven't overlooked the complexities and nuances. We've had great developers and product managers working on this. We need someone to take a really well-built product and build on top of it, not tell us how they're going to come in and save it from assured collapse. We're happy to hear that you understand some of those traps and nuances and complexities. Just please don't assume we haven't thought of them). NEW PRODUCT DEVELOPMENT: We have a pipeline of products that are on deck. Many of these are being developed via vibe coding (specifically in Lovable), but we need a developer who can push them the last 10 yards before launch. Porting these projects from Lovable into Claude is completely fine, but our front-end team is working in Lovable because it is an easier interface. General Requirements: --NextJS --React --Firebase Functions and Firestore --NoSQL design --ICS calendar formats --CSV uploading --Vercel --Vibe coding (specifically taking products built with Lovable and making them production-ready) An understanding of sports is helpful, as it makes it easier to understand the relationship between teams, venues, leagues, and cities. You don't need in-depth specific understanding of stats or players or such, but an understanding of sports leagues will make it easier to understand the tasks at hand. Please note: 1) Proposals that fall outside of our stated comp range will not be considered. If you set your proposal too high, it will be deleted. 2) Direct calls or emails will be blocked and deleted, and those candidates won't be considered further, even on Upwork. 3) Every AI response is exactly the same (literally). You're not setting yourself apart at all, and we can't tell if you have any idea what you're talking about or what our project requires. Use AI submissions at your own risk. 4) We vet every candidate before speaking to them. If your location, experience, education, and skills don't match your other public profiles, we will not be able to engage with you. Sorry for the laundry list: recruiting has become very difficult in the age of AI, so we just want to advise everyone upfront on our process. Thanks -- we appreciate your interest, and we look forward to finding someone great. This is a fun product and an interesting company, especially for someone who likes sports.