Senior Software Engineer

Septeo ES

Barcelona, Spain

2 days ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Working hours

Shift work

Languages

English

Experience level

Senior

Barcelona, Spain

Java

Artificial Intelligence

Amazon Web Services (AWS)

Unix

Cursor (Graphical User Interface Elements)

Amazon DynamoDB

Github

MongoDB

MySQL

Node.js

NoSQL

Systems Development Life Cycle

Redis

Next.js

TypeScript

React

Large Language Models

Spring-boot

Kotlin

Kubernetes

Nintex

Machine Learning Operations

Terraform

Serverless Computing

Ship high-throughput services in Node.js / TypeScript, Kotlin or Java using Spring Boot or Micronaut.
Leverage AI tooling (e.g. GitHub Copilot, Cursor, Claude code) to accelerate development and share best practices with the team.
Own the SDLC use IaC (Terraform) to blue-green deployments and manage preview environments
Continuously profile and tune latency, cost and performance
Design LLM-powered features and agents using LangChain or MCP-compliant frameworks, integrating retrieval, memory and tool-use patterns.
Uphold clean-code & domain-driven design, mentoring peers through thoughtful PR reviews.
Recognise and propose solutions for scaling weaknesses, performance bottlenecks and security risks.

6+ years building production software.
Deep expertise in at least one of TypeScript, Kotlin or Java.
Proven experience running containerised or serverless workloads in AWS, GCP or Kubernetes.
Fluency with relational and NoSQL databases (MySQL, MongoDB, DynamoDB, Redis).
Familiarity with working in a UNIX-based environment
You communicate clearly in English and thrive on feedback loops.
You care about outcomes, not just tickets.

Nice-to-have superpowers

Experience with GitOps
Full-stack chops with React / Next.js.
Hands-on with AI coding assistants (Copilot, Cursor, Claude Code) or autonomous agent frameworks / tools (LangChain, CrewAI, Autogen, n8n).
MLOps or data-engineering experience (Kubeflow, SageMaker, Feast).
Passion for mentoring and tech-community talks.