Senior Backend Engineer
Septeo ES
Barcelona, Spain
2 days ago
Role details
Contract type
Permanent contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English, Spanish Experience level
SeniorJob location
Barcelona, Spain
Tech stack
Java
Spring Security
Artificial Intelligence
Amazon Web Services (AWS)
Cloud Engineering
Code Review
Relational Databases
Cursor (Graphical User Interface Elements)
DevOps
Distributed Systems
Monitoring of Systems
Hibernate
JUnit
PostgreSQL
Microsoft SQL Server
Performance Tuning
Mockito
Simple Object Access Protocol (SOAP)
TypeScript
Test Driven Development
React
Large Language Models
Spring-boot
Backend
Event Driven Architecture
Containerization
Angular
Kubernetes
Performance Monitor
Front End Software Development
Api Design
REST
Domain Driven Design
Spring Batch
Job description
- Architect Core Services: Design and evolve high-performance backend services using Java and Spring (Boot, Security, Batch) within a hexagonal architecture.
- Drive Platform Evolution: Contribute to architectural decisions around scalability, multi-tenancy, observability, and distributed communication (REST, queues, gRPC, batch, integrations).
- Build AI-Ready Systems: Design services and data models that enable AI-driven workflows, automation, and intelligent decision layers.
- Own the Lifecycle: From domain modeling and API design to deployment, monitoring, and production performance optimization.
- Collaborate Cross-Functionally: Work closely with product, frontend engineers (Angular/TypeScript), and DevOps to deliver production-ready features continuously.
What You'll Do
- Design and implement scalable backend services using Java, Spring Boot, Spring Security, Spring Batch, Hibernate.
- Architect RESTful APIs and event-driven integrations with partners (REST, SOAP, gRPC, messaging systems).
- Optimize relational data models (SQL Server, PostgreSQL) for performance and maintainability.
- Deploy and operate services in Dockerized environments on AWS, ensuring resilience and observability (ELK, monitoring tools).
- Implement secure, high-performance, multi-tenant solutions.
- Participate in code reviews, technical discussions, and architectural design sessions.
- Use AI-assisted development tools (Copilot, Cursor, LLM-based workflows) to increase productivity and share best practices with the team.
- Take full responsibility for your code: you build it, you manage it.
Requirements
- 5+ years of experience building production-grade backend systems.
- Deep expertise in Java and Spring Boot.
- Strong experience with relational databases and performance tuning.
- Proven experience designing RESTful APIs and distributed systems.
- Solid understanding of cloud-native architectures and containerized workloads.
- Experience working in high-availability, high-throughput environments.
- Strong ownership mindset: you care about reliability, performance, and maintainability.
- Comfortable participating in architectural discussions and challenging decisions.
- Professional Spanish and English level.
Nice-to-Have Superpowers
- Experience with Kubernetes and advanced CI/CD pipelines.
- Test-Driven Development (JUnit, Mockito).
- Experience integrating AI-driven workflows or designing systems that enable ML/AI consumption.
- Familiarity with frontend frameworks (Angular, React).
- Experience with observability platforms and performance monitoring.
- Exposure to Domain-Driven Design (DDD) and event-driven architectures.
About the company
Descripción de la empresa
We are building the next generation of cloud-native software for the hospitality industry. Our platform powers complex, multi-tenant environments across multiple companies and product lines, serving high-demand operational workflows at scale.
We operate in a high-availability, high-performance context where reliability and scalability are non-negotiable. Now, we are evolving the platform toward AI-native capabilities, integrating intelligent automation, AI-assisted workflows, and data-driven decision layers directly into our core services.
We are a product-driven, engineering-first organization. We value architectural thinking, ownership, continuous delivery, and pragmatic innovation.
If you enjoy designing resilient distributed systems and want to help evolve a mature platform into an AI-native ecosystem, you'll feel at home here.
Descripción del empleo
We are building the next generation of cloud-native software for the hospitality industry. Our platform powers complex, multi-tenant environments across multiple companies and product lines, serving high-demand operational workflows at scale.
We operate in a high-availability, high-performance context where reliability and scalability are non-negotiable. Now, we are evolving the platform toward AI-native capabilities, integrating intelligent automation, AI-assisted workflows, and data-driven decision layers directly into our core services.
We are a product-driven, engineering-first organization. We value architectural thinking, ownership, continuous delivery, and pragmatic innovation.
If you enjoy designing resilient distributed systems and want to help evolve a mature platform into an AI-native ecosystem, you'll feel at home here.