Python Developer (Valladolid)

Senior Backend Engineer (Python / Data) | Spain, Remote
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Build data and ML powered backend systems for a major integral airline.
Key Points
Flexible remote across Spain
Build backend services and ML model serving for a major global airline
Python and FastAPI, microservices, AWS, strong data focus
Able to travel to the client's London office once a month for two to three days
Salary up to €65,000 gross, with flexibility for strong candidates
About the Role
I’m hiring a Senior Backend Engineer to design, build and maintain scalable, secure server‑side systems for a major global airline, working through a fast‑growing technology consultancy in triple‑digit growth. This is a data and ML‑leaning backend role.
Alongside building robust microservices and APIs, you will host and serve AI and ML models in production, integrate them into backend systems, and expose them through clean, performant endpoints. A strong focus on separation of concerns, security and performance is central to the role.
What You Will Be Doing
Hosting, serving and scaling AI and ML models in production (MLOps)
Integrating models into backend systems and building API endpoints for model interaction
Developing scalable microservices using REST, gRPC or GraphQL
Optimising database queries and schemas for performance and reliability
Implementing authentication and authorisation using industry standard practices
Troubleshooting production issues to keep services highly available
Writing unit and integration tests and maintaining clear technical documentation
Monitoring and optimising performance using observability tooling
Essential Experience
8+ years in backend development, with a strong focus on scalable, high‑performance systems
Python expertise, building backend services and APIs with FastAPI, Flask or similar
Solid grounding in microservices, event‑driven systems and service‑oriented design
In‑depth SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) knowledge
Extensive AWS experience, including database hosting, API management and serverless
Docker and container orchestration such as ECS
API security, including JWT, OAuth2, OpenID Connect and Entra ID
Git, GitHub Actions and CI/CD pipelines, plus performance tuning and scalability techniques
Right to work in Spain as a full‑time employee;
sponsorship not available
Nice to Have
Message brokers such as Kafka or AWS SQS
Infrastructure as code with Terraform or CloudFormation
Observability tooling such as CloudWatch or Datadog
Serverless and event‑driven paradigms, e.G., AWS Lambda
Agile and Scrum ways of working
AWS certifications
What’s on Offer
Salary up to €65,000 gross per year, with flexibility for strong candidates
The chance to build for a major global airline inside a consultancy in triple‑digit growth
Flexible remote across Spain
A modern data and ML‑focused stack with genuine ownership
To Apply
Please apply via this advert or email
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directly. For further information, call * or *. xhfqzwm By applying, you consent to us processing and submitting your application, subject to suitability, for this vacancy only.
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