Job Summary: Directly support and implement features for e-commerce stores, ensuring performance and an excellent customer experience. Key Highlights: 1. Work with technology and e-commerce at a growing startup 2. Opportunity to advance your career and learn 3. Space to innovate and make a difference Position: Front\-End Developer — Performa.AI **Santa Bárbara d'Oeste/SP \| On\-site \| CLT** About Performa.AI We are a technology company focused on e\-commerce solutions. Our product helps online stores perform better — and we're growing rapidly. If you love technology, want real growth, and aren't afraid to dive into code, this role is for you. Your day\-to\-day responsibilities You will directly handle **support and implementation of our features in e-commerce stores**. This means understanding each store’s environment, integrating our features, and ensuring everything works flawlessly for the end customer. In practice: * Install and configure Performa.AI features across various e\-commerce platforms * Use plain HTML, CSS, and JavaScript to customize and adapt interfaces * Integrate via APIs to connect our features with clients’ stores * Collaborate with the design team to ensure visual experience is flawless * Quickly and meticulously resolve front\-end technical issues Required qualifications * **CSS** — advanced level (responsiveness, animations, layout customization) * **JavaScript** — solid proficiency, without relying entirely on frameworks * **jQuery** — yes, we still use it, and you must master it * **HTML** — semantic, clean, and well\-structured * Experience with **API integration** * Strong eye for **design and UI** — ability to faithfully translate designs into code What we value (more than a perfect CV) * Proactivity — if you spot a problem, you solve it immediately * Genuine desire to learn and grow alongside the company * Creativity to devise solutions, not just follow instructions * Authentic interest in e\-commerce and technology Experience level Open to **Junior** and **Mid\-level** candidates. If you have the technical foundation and strong motivation, we want to meet you — regardless of years of experience listed on your resume. What we offer * **Salary:** R$ 2\.500 to R$ 3\.500/month (based on experience and level) * CLT employment contract with full benefits * **On\-site** work in Santa Bárbara d'Oeste/SP * A growing startup environment — here, you’re not just another face; you make a real difference * Real opportunities to learn, create, and advance your career * Meal allowance * Transportation allowance, if needed How to apply? Send your resume and portfolio (if available) to **rh@performa.ai**. If you have a project, a website you built, or anything showcasing your code — please include it. We review everything. Job type: Full\-time, CLT Compensation: R$2\.500,00 \- R$3\.500,00 per month Benefits: * Health insurance * Meal allowance * Transportation allowance Work location: On\-site