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# Senior Software Engineer - Cint

- **Company:** Cint
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, Artificial Intelligence, Programming Tools, ReactJS, Grafana, Technical Debt, Backend, Event Driven Architecture, Performance Monitor, Front End Software Development
- **Published:** September 16, 2026
- **Apply:** https://www.buscojobs.com.es/senior-software-engineer-cint-en-barcelona-ID-372127721

## About the Role

Requisitos principalesBackend systems expert with deep experience and comfort switching between languages
Willingness to work across frontend (React) and backend
Strong collaboration mindset and mentoring ability
Systems thinker with experience in event-driven architectures and migrating monoliths
Commitment to quality with robust test suites (Unit, Integration, E2E)
Product-minded with ability to understand business impact of architectural choices
Observability advocate focused on proactive performance monitoring
collaboration
mentoring and knowledge sharing
problem-solving mindset
Java/Spring stack
.NET to Spring migration experience
React frontend familiarity

## Description

OverviewIn this role you will help shape the modernization of Cint's Supply domain, migrating from a GO-heavy baseline toward a unified Java/Spring stack.You'll design scalable patterns to move away from monoliths with zero downtime and collaborate with product teams to balance technical debt with new value.You will work across timezones, improve observability and reliability, and leverage AI-assisted tooling to accelerate refactoring.This is a high-impact position in a global, remote-friendly environment with a focus on delivering robust backend systems and a strong developer culture.Compensaciones / BeneficiosRemote-FirstHigh AutonomyResponsabilidadesDesign patterns for legacy displacement and zero-downtime domain migrationBuild new services and help transition others from .NET to SpringCollaborate with product managers to shape roadmaps and align technical work with business impactCommunicate effectively across timezones with strong written documentationEnhance observability using Grafana and modern tracing to ensure performance and reliabilityLeverage Agentic programming tools (e.g., Claude Code) to accelerate refactoring and development workflowsMentor teammates and foster knowledge sharing across the distributed teamRequisitos principalesBackend systems expert with deep experience and comfort switching between languagesWillingness to work across frontend (React) and backendStrong collaboration mindset and mentoring abilitySystems thinker with experience in event-driven architectures and migrating monolithsCommitment to quality with robust test suites (Unit, Integration, E2E)Product-minded with ability to understand business impact of architectural choicesObservability advocate focused on proactive performance monitoringcollaborationmentoring and knowledge sharingproblem-solving mindsetJava/Spring stack.NET to Spring migration experienceReact frontend familiarity


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