Sr. Software Engineer (Agentic)

Full Remote European Timezone Professional English Required

About the Role

Were looking for a Senior Software Engineer with an Agentic mindset someone who doesnt just write code but builds systems that think act and adapt. Youll work on a production AdTech platform with real business impact and youll increasingly work alongside AI agents and design agentic workflows as part of your daily engineering practice.

This is not a ticket-execution role. We expect you to bring judgment ask the hard questions design thoughtfully and genuinely care about the quality of what you ship whether that code was written by you assisted by AI or executed autonomously by an agent you designed.

Responsibilities

• Design develop and maintain robust scalable backend services following Domain-Driven Design (DDD) principles.
• Take full technical ownership of features from design through deployment and monitoring.
• Build and orchestrate agentic workflows: autonomous pipelines where AI models (Claude LLMs) take actions call tools and solve tasks with minimal human intervention.
• Actively participate in architecture decisions with strong analytical thinking and technical depth.
• Ensure code quality through SDD TDD and BDD methodologies with sharp attention to detail.
• Collaborate on code reviews refinements and technical planning.
• Proactively identify and address technical debt performance bottlenecks and security risks (OWASP SOLID).
• Build and maintain CI/CD pipelines across Bitbucket GitLab or GitHub.
• Produce well-reasoned technical designs before writing the first line of code.

Tech Stack

Languages

• PHP (required) JavaScript / Python
• Rust (nice to have)

Frameworks & Tools

• Laravel Pest Tailwind CSS
• AWS: Lambda SAM Templates S3 CloudFront
• Terraform Playwright Robot Framework Cypress
• Grafana k6 Postman

Agentic & AI Tooling

• Claude (Anthropic) Kiro
• Experience building or working with LLM-powered agents tool use MCP integrations or prompt engineering at an engineering level

Platform & Collaboration

• Bitbucket Jira / Atlassian suite

AdTech (nice to have)

• Google Ad Manager (GAM)
• Prebid Server

Methodologies & Principles

• SDD (Spec-Driven Development) TDD BDD
• SOLID DDD OWASP
• CI/CD pipelines (Bitbucket Pipelines GitLab CI GitHub Actions)

What Were Looking For

• 5 years of experience in backend or full-stack software development.
• Practical experience with agentic AI systems building agents designing tool use working with LLM APIs or automating complex workflows with AI.
• Strong technical analysis and design skills: you can break down complex problems propose well-reasoned solutions and think through the implications of architectural decisions.
• Critical thinking: you dont execute blindly. You question challenge and improve including the outputs of AI tools.
• Attention to detail: the code you ship is clean tested and documented. You apply the same standard to AI-generated code.
• True ownership: youre accountable for what you build in production over time.
• Autonomy: you know how to move forward without hand-holding and when to raise a flag.
• Proactive attitude: you surface improvements catch problems before they become incidents and share knowledge freely.
• Eagerness to learn: the agentic era is moving fast and youre moving with it.
• Fluent professional English written and spoken. The team is fully remote and multicultural.

What We Offer

• Full remote work from anywhere within the European timezone (CET 2h).
• Small technical team with minimal overhead.
• Direct impact: your decisions ship to production.
• A culture of honest feedback and continuous improvement.
• Modern tooling including cutting-edge AI and freedom to propose new approaches.
• A front-row seat to the agentic engineering shift not just as a user but as a builder.

If this sounds like you and you want to build something that matters wed love to hear from you.