Backend Engineer, Madrid at Air Apps
May no longer be active — verify on the employer site
At a glance
- Company
- Air Apps
- Location
- Spain
- Work arrangement
- On-site
- Employment type
- Full-time
- Experience
- 5–10 years
- Working hours
- 40 hours
- Visa sponsorship
- Offered, according to the listing
- Posted
- Added to The Stack
✨ The Stack take on this Air Apps job
- 🏢 Air Apps has 73 jobs here, 73 with visa sponsorship see all
- 🛂 Visa: Highly Qualified Professional permit. Education: Higher education degree guide
- 💡 No salary shown. Ask Air Apps if it is above the minimum.
Updated 2026-11-05, from our data and official sources.
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About the role
Responsibilities:
- Architect, develop, and maintain backend services, APIs, and microservices using Node.js and TypeScript.
- Design data models and queries for Supabase/PostgreSQL, including security policies and real-time features.
- Deploy and operate services on cloud platforms (GCP preferred): Cloud Run, Cloud Functions, Pub/Sub, IAM.
- Write and maintain unit, integration, and end-to-end tests; participate in code reviews.
- Apply Clean Code and Clean Architecture to ensure maintainability and scalability.
- Implement authentication, authorization, and data protection best practices.
- Monitor service health, set up alerts, and own incident response and reliability improvements.
Requirements:
- 5+ years of backend engineering experience in production systems.
- Proven Node.js and TypeScript expertise.
- Strong experience with Supabase or PostgreSQL-based backends.
- Hands-on cloud experience with serverless deployments and GCP tooling.
- Familiarity with testing frameworks (Jest), CI/CD pipelines, and Git workflows.
- Good system design, security mindset, and communication skills.
- Willingness to work onsite in Lisbon (relocation assistance available).
Responsibilities
You will design, build, and maintain server-side components using Node.js and TypeScript while collaborating with cross-functional teams. Additionally, you will manage cloud infrastructure on GCP and ensure high code quality through testing and monitoring.
Requirements
Candidates must have at least 5 years of backend engineering experience with proficiency in Node.js, TypeScript, and PostgreSQL-based services. Strong knowledge of cloud platforms, API design, and clean architecture principles is also required.
Key skills
- Node.js — in 172 other listings on The Stack
- TypeScript — in 467 other listings on The Stack
- Supabase — in 23 other listings on The Stack
- PostgreSQL — in 296 other listings on The Stack
- Google Cloud Platform — in 53 other listings on The Stack
- RESTful APIs — in 63 other listings on The Stack
- GraphQL — in 90 other listings on The Stack
- Microservices — in 236 other listings on The Stack
- Cloud Run
- Cloud Functions
- Clean Code
- Clean Architecture
- CI/CD
- Jest
- Git
- Data protection
Relocation terms mentioned in this listing
- relocation assistance
Quoted from the listing's text; confirm the details with Air Apps.
On The Stack (as of 2026-11-05)
Frequently asked questions about Air Apps
Is this Backend Engineer, Madrid role still open?
It was posted on 2026-04-16. Listings more than 30 days old may no longer be active, so check Air Apps's site before applying.
Does Air Apps offer visa sponsorship?
This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Air Apps's site.
Where is this role located?
The listing gives the location as Spain. It is marked on-site.
What skills does this role ask for?
The listing names: Node.js, TypeScript, Supabase, PostgreSQL, Google Cloud Platform, RESTful APIs, GraphQL, Microservices, Cloud Run, Cloud Functions, Clean Code, Clean Architecture, CI/CD, Jest, Git, Data protection.