Senior Platform & Software Engineer

Permanent employee, Full-time · Madrid, Lisbon
60,000 - 100,000 € per year
What You’ll Do
As a Senior Platform & Software Engineer at InteractiveAI, you will be a key contributor to our core platform, owning the end-to-end delivery of features. You will be instrumental in bridging the gap between application logic and the underlying infrastructure, ensuring our systems are robust, scalable, and efficient. You’ll collaborate with product, data science, and DevOps to build and maintain the foundation of our AI-agent management platform.
  • Platform & Application Development: Design, implement, and maintain the microservices and user-facing components that power our platform.
  • Infrastructure as Code (IaC): Architect and maintain our cloud infrastructure using Terraform to define networking, compute, and storage resources on GCP, AWS, or Azure.
  • Container Orchestration: Manage and optimize Kubernetes clusters, ensuring high availability, smooth scaling, and efficient rolling updates.
  • Data Engineering: Build and optimize data ingestion, warehousing, and caching layers with technologies like Postgres, ClickHouse, and Redis.
  • API Design: Develop and maintain high-performance RESTful and GraphQL APIs for internal and external clients, ensuring seamless integrations.
  • System Reliability Engineering (SRE): Implement robust monitoring, alerting, and logging to proactively manage system health and ensure reliability.
  • Full-Stack Ownership: Take full ownership of features from conception through to production, addressing both backend and frontend challenges as needed.
  • Mentorship & Best Practices: Drive technical excellence and mentor junior engineers, fostering a culture of high standards and continuous improvement.
What We’re Looking For
  • 5+ years of professional experience in a platform, backend, or full-stack engineering role, with a strong focus on building and deploying scalable, production-ready systems.
  • Expertise with Infrastructure as Code (IaC) tools like Terraform.
  • Deep practical experience with Kubernetes and container technologies like Docker.
  • Strong proficiency with data stores such as Postgres, ClickHouse, and Redis. This includes schema design, query optimization, and performance tuning.
  • Advanced skills in TypeScript and React for building intuitive user interfaces.
  • Proven ability to deploy and manage infrastructure on major cloud platforms (GCP, AWS, or Azure).
  • Solid understanding of CI/CD pipelines, automated testing, and modern release management strategies.
  • Strong communication skills in English; able to articulate complex technical decisions clearly and effectively.
What You’ll Get
  • Competitive base salary + performance bonuses
  • Future equity opportunity for high performers
  • Health & wellness allowances
  • Private health insurance
  • Flexible work setup + travel when needed (ideally Hybrid in Lisbon or Madrid)
  • 25 days of holidays/paid time off (excluding local public holidays)
Who You Are
  • Proactive & Resourceful: You take initiative to identify gaps and drive solutions without waiting for instructions.
  • Accountable & High-Ownership: You treat our codebase and infrastructure as your own, and you honor commitments.
  • Entrepreneurial Mindset: You thrive in ambiguity, embrace rapid change, and deliver in a high-paced startup setting.
  • Team Player: You collaborate effectively across disciplines, give and receive feedback constructively, and mentor others.
Interview Process
We keep our process focused and respectful of your time. Most candidates complete it in 2–3 weeks. Here’s what to expect:
  1. Intro Call – 30 minutes with our team to align on fit and expectations
  2. Take-Home Challenge – A practical task based on real-world problems
  3. Technical Interview – Deep dive into the challenge, technical experience, and DevOps engineering
  4. Cultural and Values Interview – Discussion on motivation, cultural and value alignment
  5. Offer – Final conversation and offer
We’re forming a team of builders — people who care about impact, quality, and growth. If that’s you, let’s talk — careers@interactive.ai 
About us

InteractiveAI is a fast-growing startup on a mission to empower enterprises with fully managed AI agent lifecycles. 
We are building the next generation of enterprise-AI solutions, delivering an end-to-end Agentic IDE alongside an extensible ecosystem of agentic resources and solutions. 

Our platform allows companies to orchestrate, monitor, evaluate, deploy and improve AI agents—and soon fine-tune and own their own models. 

We value autonomy, speed, and innovation, and we’re building a world-class team to match. Our squads are lean, focused, and execution-driven.

If you thrive in high-performance environments and want to be part of a company that rewards transformational outcomes, this is for you. 

We are looking forward to hearing from you!
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