IT & Software

Staff Software Engineer — Java / Spring Platform

Duetto

Remote · Nationwide · United Kingdom

Overview

As Staff Software Engineer on the Dev Platform team, you own the architecture and evolution of Duetto’s Java/Spring monolith, guiding domain boundaries and platform modernization at scale. You will shape event-driven data flows and the backend that powers hotel pricing and demand across 80+ integrations, while advancing observability and reliability. You’ll pioneer AI-augmented engineering workflows using Claude tools and our MCP platform across US and EU teams. This role offers real architectural authority, cross‑continental influence, and the chance to drive a modern, high‑throughput multi-tenant system that sits at the core of Duetto’s products.

Responsibilities
  • Own architecture and technical roadmap for the Java/Spring platform
  • Drive domain decomposition and service boundaries
  • Lead modernization initiatives to improve modularity, reliability, and developer experience
  • Design and implement event-driven data flows using AWS Kinesis, SQS/SNS, and Spring Cloud Stream
  • Improve GraphQL API layer and backend services for pricing, inventory, and demand management
  • Tune and operate MongoDB, Redis (Redisson), and PostgreSQL for performance in a multi-tenant environment
  • Strengthen observability with OpenTelemetry, Datadog, Prometheus, Grafana, and Sentry
  • Pioneer AI-augmented engineering workflows using Claude Code, Claude MPM, and MCP tooling
  • Drive architecture decisions through design docs and RFCs, defining patterns for schema evolution and testing
  • Mentor engineers across US and EU teams to raise code quality and technical standards
Key requirements
  • 7+ years building production backend systems at scale
  • Deep expertise in Java — Spring Framework, Gradle, and JVM performance tuning
  • Production experience with event-driven architectures — AWS Kinesis, Kafka, or equivalent
  • Strong system design fundamentals: domain decomposition, modularity, schema evolution
  • AWS production experience across EKS/ECS, S3, SQS/SNS, and IAM
  • Demonstrated track record of driving architecture decisions and authoring design docs without formal authority
  • Mentoring and coaching across distributed teams
  • Strong written and verbal communication for design docs and RFCs
  • Cross-functional collaboration and influence without authority
  • Java/Spring, Gradle, JVM performance tuning
  • Event-driven architectures — AWS Kinesis, Kafka, SQS/SNS
  • AWS (EKS/ECS, S3, IAM)

Reference: WJ-747_30141437

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