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Senior Product Engineer

Genesy Ai - Barcelona, Spain - In-office

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Enginy is a Barcelona-based AI-driven B2B sales and prospecting platform that automates manual prospecting workflows for sales teams. The company recently raised €5M in seed funding and is ranked #3 in Sifted 100: Southern Europe 2026. They are scaling internationally and building the next generation of GTM (go-to-market) software. As a Senior Product Engineer, you will lead from the code and set technical direction for your team while helping define how Enginy builds as it scales. You'll join at a stage where customer demand creates real engineering challenges and strong technical leadership has outsized impact. You'll shape architecture, standards, and culture during critical growth phase. Depending on your background and strengths, you will take ownership across one or more of these areas: Backend: Build and maintain scalable, reliable services powering the core engine. Work with async architectures, data pipelines, and workflow orchestration (Temporal). Design and implement production-grade APIs and integrations with external platforms (CRMs, LinkedIn, and more). Optimize performance, debug complex issues, and ensure strong observability. Frontend: Develop high-quality, responsive web applications using React + TypeScript. Own customer-facing dashboards, campaign builders, reporting UIs, and supporting API layers. Work on internal tools, SSR/edge rendering, and lightweight Node.js services. Focus on performance, Core Web Vitals, and developer experience. Cross-functional: Collaborate closely with Product, Design, and Engineering teams. Ship end-to-end functionality with clear focus on quality, reliability, and speed. Help shape engineering practices, code quality, and architecture as the company scales. The company offers competitive salary tailored to experience, performance bonuses, flexible remuneration through Cobee, short Fridays year-round, extra vacation days for birthday and work anniversary, gym discount with spa access, free fresh fruit and coffee, continuous learning opportunities including mentoring and conference attendance, and a collaborative culture emphasizing transparency and respect. Hiring process is designed to be close to real engineering work, avoiding trivia-heavy interviews. Expect: initial conversation about background and goals; short practical task based on a small version of the product (AI tools welcome); technical/product conversation focused on realistic engineering problems; final conversation on team fit and expectations. REQUIREMENTS (Must-Have): - 4+ years of professional software engineering experience (Backend, Frontend, or Full-Stack) - Strong experience with TypeScript and either Node.js or React - Solid understanding of modern API design, async workflows, or web architectures - Experience working with relational databases (PostgreSQL or similar) - Ability to work autonomously, debug complex issues, and ship high-quality code - Strong communication skills and advanced level of English Nice-to-Have: - Experience in early-stage or fast-scaling startups - Familiarity with workflow engines (e.g., Temporal), distributed systems, or microservices - Knowledge of UI performance optimization, design systems, or a11y testing - CI/CD practice with GitHub Actions - Interest in B2B SaaS, sales tech, or automation tools - Basic exposure to full-stack work, even if focus is mainly Backend or Frontend

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