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Senior Software Engineer

Software Engineer • Senior • Remote • Full-time Spain Spain

A Senior Software Engineer role in Cint's Supply domain, leading legacy modernization, helping the transition from .NET to Spring, and shaping the future of the platform architecture.

Responsibilities

  • Collaborate on the modernization journey: design and implement patterns for legacy displacement with zero downtime
  • Bridge tech stacks: build new services and help transition others from .NET to Spring
  • Partner with product managers to form requirements and shape a roadmap balancing technical debt with new value
  • Communicate effectively across timezones through written documentation and async communication
  • Use Grafana and modern tracing to monitor system health
  • Leverage agentic programming tools (like Claude Code) to accelerate refactoring and development

Requirements

  • Deep backend experience, comfortable switching between languages
  • Practical React experience welcomed (while backend remains the priority)
  • Strong collaboration mindset and willingness to mentor
  • Experience with event-driven systems, breaking down monoliths and managing migrations
  • Strong product mindset, understanding business impact of architectural choices
  • Commitment to robust test coverage (unit, integration, E2E)

Soft skills

Collaborative team playerMentoring and knowledge sharingCuriosity and pragmatismObservability advocacy

What we offer

  • Remote-first work from anywhere Cint operates
  • High autonomy, engineers trusted to own their work end to end
  • Global impact: work powers a marketplace used by millions worldwide

About the company

Cint's Supply domain is composed of engineers distributed across Europe and the US, building the critical infrastructure that manages and standardizes the flow of survey data to a global network of suppliers.

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