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.

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, Linked In, and more).

• Optimize performance, debug complex issues, and ensure strong observability.

Frontend

• Develop high-quality, responsive web applications using React + Type Script.

• 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.

• 5+ years of professional software engineering experience (Backend, Frontend, or Full-Stack).

• Strong experience with Type Script 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.

• 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.

• CI/CD practice with Git Hub Actions.

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

• Basic exposure to full‑stack work, even if your focus is mainly Backend or Frontend.

We’ve designed our hiring process to be close to real engineering work. We try to avoid trivia‑heavy interviews and artificial take‑home exercises, and instead focus on how you think through product problems, technical trade‑offs, ambiguity, quality, and the use of AI as part of modern engineering.

One of our tech leads wrote more about the philosophy behind the process here: (Usted puede enviar una solicitud o contactar con nosotros por email usando el Buzón de Solicitud online de abajo)/

In practice, you can expect:

• A first conversation to understand your background, goals, and what kind of environment helps you do your best work.
• A short practical task based on a small version of our product, where we care about prioritization, scope, reasoning, and delivery within constraints. You’re welcome to use AI tools, as you would on the job.
• A technical/product conversation focused on realistic engineering problems, not stack trivia.
• A final conversation to align on team fit, expectations, and next steps.

We aim to keep the process practical, transparent, and respectful of your time. If you reach the technical task stage, we’ll review your work carefully and give thoughtful feedback.

Competitive salary tailored to your experience.

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

Flexible remuneration through Cobee.

Short Fridays all year…