Hi there!

At Flipflow , we're looking for a Senior Backend Engineer to join our core engineering team and help us build and scale one of the most ambitious Retail Intelligence platforms in the market.

This is a deep technical role , for people who genuinely enjoy building software , thinking about architecture, and getting involved not only in code but also in product and business decisions .

If you're excited about complex backend systems, massive-scale data processing, crawling infrastructure and making data flow reliably from collection to client — this role is for you.

About Flipflow & Our Mission

Flipflow is a Retail Market Intelligence & Digital Shelf Analytics SaaS platform , currently scaling internationally after strong growth in Spain and Latin America.

Since our launch in 2021, our mission has been clear:

To give brands, manufacturers and retailers a real-time, actionable and reliable cockpit and AI copilot to understand their products, competitors and markets — enabling better business decisions.

Retail is facing one of the biggest transformations in its history:

markets are integral, competition is intense, and margins depend on data quality, speed and intelligence .

At Flipflow, we believe real-time competitive intelligence is no longer optional — it’s essential.

Your Challenge & Impact

At Flipflow, every new backend feature is an adventure and a project on its own — most of them genuinely fun if you like hard problems.

We crawl over a billion datapoints per week , process and normalize massive volumes of messy retail data, and turn that into structured intelligence used by global brands.

As a Senior Backend Engineer , your mission is to design, build and evolve the systems that:

- Collect and process massive volumes of raw data with our own crawling infrastructure
- Normalize, relate and enrich millions of products across markets with complex data pipelines
- Power our proprietary BI suite,



analytics and AI-driven insights using LLMs and Agents
- Scale reliably as customers, use cases and data volumes grow

You will have a direct impact on product quality, system scalability, data intelligence and Flipflow’s long-term technical foundation .

‍ What will you do?

- Design, build and maintain core backend services and APIs — PHP/Laravel as the main framework, with TypeScript, Python and Go across different services.
- Build and operate large-scale data pipelines — ingest data from hundreds of crawled sources, transform and normalize it, and deliver it reliably to our OLAP engine so clients see fresh, accurate data every day.
- Contribute to and improve our distributed crawling infrastructure — tens of millions of daily requests, thousands of parallel browsers, proxy management, session handling and anti-detection systems, all built in-house.
- Work on event-driven and streaming systems — message queues, async processing, real-time data flows. You’ll ensure data moves efficiently from collection to delivery at scale.
- Jump between codebases, languages and layers as needed — from Terraform to TypeScript to PHP to Go. If something is broken or needs building, you own it regardless of where it lives.

Your Profile

- 5+ years of experience in Backend, Full-stack or Data Engineering roles.
- Data pipeline engineering — you've built systems that ingest, transform and deliver large volumes of data reliably. Not analytics or dashboards — the plumbing that makes data flow from source to client.




- Event-driven architecture — message queues (Pub/Sub, SQS, Kafka), async job processing, streaming. You've built systems where millions of events flow through multiple stages without losing data.
- Comfortable across the full stack — you don't need permission to jump into a new codebase, language or layer. If it's broken, you fix it. If it needs building, you build it.

⬆️ Nice to Have

- Stream processing (Apache Flink, Kafka Streams) — building and operating real-time data flows, not just consuming them.
- Web scraping at scale — distributed crawling, browser automation, proxy management. You've dealt with the chaos of collecting data from hundreds of sources.
- Kubernetes + IaC (Terraform/OpenTofu) — you can own the deployment, not just the code. Helm, ArgoCD, GCP/AWS.
- OLAP / time-series databases — ingestion, partitioning, performance tuning for analytical workloads.

What We Offer

- Compensation: Competitive senior-level salary aligned with experience and impact
- Real ownership: You will shape core systems, not just implement tickets
- Hard technical problems: Massive data, AI in production and complex distributed systems
- Flipflow culture: High standards, autonomy, trust and frequent feedback
- ⌚ Flexibility: Hybrid model (2 days remote / 3 onsite)
- ️ Location: Offices in La Marina, Valencia, with wonderful views of the sea

Our Commitment

At Flipflow, senior engineers are builders and decision-makers , not just executors.

We offer:

- Ownership over meaningful technical problems
- Space to design, refactor and improve core systems
- Real-world AI and data challenges
- A strong, ambitious team building something that genuinely matters
- If you want to build the systems that move data at scale , and be part of a company aiming to define a new standard in Retail Intelligence, we'd love to meet you.

📌 Senior Backend Engineer (Valencia)
🏢 Talent
📍 Valencia