Septeo

Tech / AI / Software

SeniorBackendEngineer

barcelona, catalonia, spain FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for mid candidates.

The Brief

“Senior Backend Engineer at Septeo. Skills: Backend services development, Java, Spring Boot, Distributed systems design, Cloud-native architectures, AI-native capabilities. Design and evolve high-performance backend services using Java and Spring (Boot, Security, Batch) within a hexagonal architecture. Contribute to architectural decisions around scalability, multi-tenancy, observability, and distributed communication (REST, queues, gRPC, batch, integrations)”

What You'll Achieve.

Deliver production-ready features continuously; Ensure resilience and observability; Increase productivity using AI-assisted development tools

Industry & Context.

Tech / AI / Software

What They're Looking For.

Must Have

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

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

What You'll Do.

Design and evolve high-performance backend services using Java and Spring (Boot

Batch) within a hexagonal architecture

Contribute to architectural decisions around scalability

and distributed communication (REST

Design services and data models that enable AI-driven workflows

and intelligent decision layers

Own the Lifecycle: From domain modeling and API design to deployment

and production performance optimization

Design and implement scalable backend services using Java

Architect RESTful APIs and event-driven integrations with partners (REST

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

multi-tenant solutions

Participate in code reviews

technical discussions

and architectural design sessions

Use AI-assisted development tools (Copilot

LLM-based workflows) to increase productivity and share best practices with the team

Take full responsibility for your code: you build it

How You'll Work.

Team & Collaboration

Collaborate closely with product, frontend engineers (Angular/TypeScript), and DevOps to deliver production-ready features continuously; Participate in code reviews, technical discussions, and architectural design sessions; Work closely with product, frontend engineers (Angular/TypeScript), and DevOps

Communication Scope

Professional Spanish and English level

Full Job Description

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. 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. How You’ll Have Impact •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 c

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