Full-Stack Developer / Small Team for Financing Assessment & Lead Gen Platform

We are looking for an experienced full-stack developer or small development team to complete and launch a web-based assessment and lead-generation platform for the SME financing market. The core experience is similar to a Lendela-style funnel (lendela.com, also attached the website flow in the description) Business enters company information → completes a guided assessment → receives a personalised result (this is where the logic + use of AI comes in) → continues the conversation via WhatsApp. An existing design direction is already available. We are primarily looking for a capable implementation partner to build, integrate, test and launch the working product. Initial Scope The project is expected to include: • Implementation and improvement of the existing website • Mobile-first multi-step assessment funnel • Conditional questions and branching logic • Basic company information lookup / enrichment • Rules-based calculations and recommendations • Personalised funding result pages • LLM API integration for personalised written explanations • Email capture and lead storage • Simple backend / database • WhatsApp handoff • Analytics and campaign tracking • Third-party API, webhook and automation integrations The detailed product requirements, assessment logic and business rules will be shared with shortlisted candidates. We ideally want someone who can think through: • data flow • business logic • edge cases • incomplete information • integrations • error handling • output quality This is not a simple landing-page project. Who We Are Looking For Ideally: • Senior full-stack developer or small experienced team • Direct communication with the person actually building the product • Experience shipping real web applications, especially a similar product • Strong experience with multi-step forms, assessments, calculators or lead-generation funnels • Experience with rules-based logic and personalised outputs • Experience integrating LLM APIs such as Claude or OpenAI • Experience with APIs, webhooks and third-party services • Experience with WhatsApp integrations is a plus • Able to work quickly from an existing design direction We prefer a simple, modern and maintainable stack. Possible stack: • Next.js / React • Supabase / Firebase or equivalent • Vercel or equivalent We are open to recommendations. Timeline Approximately 3–5 weeks. How to Apply Please answer the following: Share 2–3 live products you personally built or directly worked on. Have you built any multi-step assessment, quiz, calculator, matching or recommendation products? Have you integrated LLM APIs into a production product? Have you worked with WhatsApp, webhooks or automation platforms? What stack would you likely recommend for this project? What is your approximate timeline and fixed-price estimate? Please do not send a generic agency presentation. We will shortlist the strongest applicants and share a more detailed project brief before the next stage. Shortlisted candidates may be asked to complete a small paid proof-of-capability exercise before the full project is awarded.