Integrations & Infrastructure Engineer • HQ - Barcelona •

What you’ll own As the team’s specialist on POS integrations , you’ll take full ownership of designing, building, scaling, and maintaining integrations with external POS providers and related services. This covers :

Developing new integrations and extending current connectors

Tackling integration incidents and root‑cause analysis

Ensuring high reliability and performance as volume grows

Architecting infrastructure for scalability, observability, and security

Collaborating closely with product, backend, and DevOps peers

What we’re looking for Product mindset – you empathize with users (e.g., restaurants), prioritize impactful work, and communicate clearly across teams

Backend focus – strong skills in server‑side development (TypeScript / Node, Python, Go, etc.) and database modeling

Infrastructure expertise – experience deploying and maintaining services in cloud environments (GCP, AWS, Kubernetes, Docker, CI / CD, monitoring / logging)

Integration know‑how – comfortable with REST / GraphQL APIs, webhook handling, message queues

T‑shaped profile – deep backend + infrastructure skills, plus the ability to triage issues, propose solutions, and debug (inc. familiarity with observability)

2–5+ years building production services in SaaS or high‑volume systems

Fluency in English and Spanish (we use both daily – Spanish for syncing, English for docs and code)

Extras we love Experience working with POS systems or in the restaurant / HORECA sector

Familiar with domain‑driven design or microservices

Background in incident response, SRE practices, or service-level objectives

Why you'll love it Ownership from day one – lead this mission-critical area as we expand

Fast‑growing impact – integrations are core to scaling haddock into new markets

Cross‑functional influence – work with product, customer success, and engineering to shape flow and experience

Career growth – shape team practices, mentorship opportunities, and future technical strategy

Great package – €35–50k gross / year, hybrid remote, Urban Sports Club, snacks, central office near La Pedrera

Our process We move fast (1 week!) while keeping it friendly and respectful :

Intro call (~30min) with a co-founder.

Technical interviews (~2 hr) — integration and infra design deep dive + live backend / infrastructure task.

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