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Maisa Logo Maisa · IT - Software Development

Senior Software Engineer (Backend)

Spain, Manises · Job Posted June 09, 2026
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Job Description

We're looking for a Senior Software Engineer to join our product and engineering team. You'll work on a microservices architecture, owning meaningful parts of the product end-to-end — from requirements to production. Our engineers work closely with clients, so you'll have direct visibility into real-world impact. You'll work end-to-end across the full delivery lifecycle alongside product, QA, and other engineers to take problems from requirements to production. This is an early-stage company — you'll be building new features, tailoring the product for existing clients, and helping shape how we work as we grow.

Job Responsibility

  • Design, build, and maintain backend services in Go and Python across a microservices architecture deployed on Kubernetes
  • Own features end-to-end — from technical design through deployment and iteration
  • Work closely with clients and client-facing teams to understand requirements and translate them into reliable, scalable solutions
  • Write clean, well-tested, production-ready code and contribute to code reviews
  • Contribute to architectural decisions and help raise the technical bar across the team
  • Help maintain and improve existing client implementations alongside building new capabilities

Requirements

  • 7+ years of software engineering experience with a strong backend focus
  • Production experience with Go and Python
  • Strong understanding of microservices and distributed systems
  • Experience with Kafka or similar message queue systems
  • Familiarity with Redis (or equivalent in-memory data stores) and MongoDB
  • Experience working with Kubernetes and containerised services in production
  • Comfortable with AWS and GitHub Actions CI/CD pipelines
  • Comfortable working in a fast-moving, ambiguous environment with high ownership
  • Strong communication skills
  • Genuine curiosity about AI and how it's reshaping how products are built

Nice to have

  • Hands-on experience with AI/ML systems, LLM integration, or agentic workflows
  • Exposure to vector databases or retrieval-augmented generation (RAG)
  • Experience in an early-stage or scaling startup
  • Background in security architecture or SRE practices
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