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Senior Frontend Software Engineer

icon building Empresa : Genesy Ai
icon briefcase Tipo de empleo : Tiempo completo

Número de solicitantes

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Descripción del trabajo - Senior Frontend Software Engineer

About Genesy AI


Genesy AI is a Barcelona-based startup on a mission to revolutionize how B2B sales and prospecting teams operate. Our cutting-edge AI-driven lead generation technology empowers sales teams to focus on what truly matters: selling. By automating manual prospecting, we help optimize workflows, ensuring a predictable and scalable sales pipeline—no wasted time, just results.


After successfully raising €5 million in a landmark seed funding round to grow our teams and scale in key markets.

We are now looking for a Senior Frontend Software Engineer to join us.


💪🏻 What You'll Do




  • You will build and maintain feature‑rich, high‑performing web applications & supporting API layers that power Genesy AI’s sales‑automation platform. This includes:

    • Customer‑facing dashboards, campaign builders, and reporting UIs built with React + TypeScript.

    • Lightweight Express services (Node.js) that bridge frontend and backend systems, handle SSR/edge rendering, and expose internal APIs.

    • Integrations with 3rd‑party platforms (e.g., CRMs, LinkedIn) directly from the web layer where appropriate.

    • Instrumentation for performance, observability, and error tracking (Lighthouse, Sentry, OpenTelemetry).



  • You will work closely with Design, Product, and Backend teams to deliver seamless end‑to‑end user experiences, with a strong emphasis on performance, reliability, and developer experience.



What We’re Looking For


🔎 Must-have:




  • 5+ years of professional experience in Frontend/web development with React & TypeScript.

  • Strong command of modern JavaScript/TypeScript (ES6+) and browser APIs.

  • Proven experience designing & shipping production‑grade web apps and REST/GraphQL APIs using Express or similar frameworks.

  • Solid grasp of HTML5, CSS3/SCSS, responsive & mobile‑first design, cross‑browser quirks.

  • Familiarity with state‑management & data‑fetching (Redux, Zustand, React Query, SWR, etc.) and asynchronous workflows.

  • Track record of performance profiling & optimization, and Core Web Vitals tuning.

  • Comfortable integrating with Backend & third‑party APIs (e.g., HubSpot, Salesforce).

  • Experience writing and maintaining tests (unit, integration, e2e) with Jest, React Testing Library.

  • Exposure to CI/CD pipelines (GitHub Actions or similar) and feature‑flag / rollout practices.

  • Clear communication and ability to work autonomously in a fast‑paced startup environment.

  • Habit of writing clean, testable, well‑documented code.

  • Advanced level of English.



📍 Barcelona-based or open to relocating to our vibrant city.


 


➕ Nice-to-have




  • Prior experience in early‑stage startups or hyper‑growth environments.

  • Experience building or maintaining a design system (Storybook, Figma tokens).

  • Exposure to DDD / Hexagonal Architecture principles applied to UI & service boundaries.

  • Interest in B2B SaaS, sales tech, or workflow automation tools.

  • Experience working with third‑party APIs at scale.



What We Offer


💰 Competitive salary tailored to your experience.


🎯 Enticing performance bonuses that you won’t see anywhere else.


💳 Flexible remuneration through Cobee.


📅 Short Fridays all year round and extra days of vacation for your birthday and Geneversary.


🏋🏻‍♂️ A discount on a premium gym (with spa access) just a step away.


🍏 Free fresh fruit every day to help you care for your health.


Free coffee to keep you energized.


🍴 A discount at a beachfront cafe where you can also get daily menu deals.


🏖️ Beachfront office so you can work with stunning sea views—an inspiring and energizing workspace.


🌊 Direct beach access to take breaks by the sea and recharge.


📚 Continuous learning, including but not limited to mentoring, coaching, workshops, and opportunities to attend SaaS conferences.


🚀 Career growth opportunities, as we won’t let your dedication and results go unnoticed.


🎉 Team gatherings and celebrations, because we love to build connections and celebrate achievements together.


👨‍💻 A collaborative culture because we foster hard work, teamwork, transparency, and respect, encouraging open communication and a positive environment where your voice matters.

Ready to shape the future of B2B sales with us? Let’s build something great together 🚀


 

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