Senior Product Engineer

About Enginy

Enginy 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, we are looking to grow our teams and scale in key markets.

We’re growing fast and looking for a Senior Product Engineer to join us at Enginy AI. You’ll play a key role in building the systems and user experiences that power our sales-automation platform, from high-throughput backend workflows to performant, feature-rich web applications.

💪🏻 What You’ll Do

Depending on your background and strengths, you will take ownership across one or more of the following areas:

Backend

• Build and maintain scalable, reliable services powering our 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 a clear focus on quality, reliability, and speed.

• Help shape engineering practices, code quality, and architecture as we scale.

🔎 What We’re Looking For (Must-Have)

• 5+ 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 an advanced level of English.

• Desire to work in a fast-moving startup environment.

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.

• Experience with Redis, Elasticsearch, Kafka, or third-party API integrations.&