Job Reference:

-1Date Posted: 9 September 2026Recruiter: Coberon ChronosLocation: SpainRemote Working: 100% remote working possibleSalary: On ApplicationSector: Engineering, IT & TechJob Type: Permanent, Full-time, Home-office based, W2, RemoteEmail:

for this job nowJob DescriptionOur client is a world-class American B2B software company, a leader in its field. We are looking for exceptional Senior Backend Software Engineers (Tech stack: Ruby/ RoR, PostgreSQL, Redis, Kafka, k8s) to join the team that develops and maintains everything related to recipe execution: DSL, pulling events, processing webhooks, and executing jobs. It has various aspects: performance, scaling, storage, durability, atomicity, concurrency guarantees, data protection, and encryption. These are full-time, permanent positions offering highly competitive compensation and benefits.MUST-HAVE REQUIREMENTSStrong experience in building scalable distributed backend applications (5+ years).Great understanding of all building blocks of large web applications: databases, load balancers, application servers,



message brokers, caching, monitoring, etc.Good understanding of network protocols and stacks.Good understanding of DB technologies: classic databases and modern no-SQL.Knowledge of basic data structures and algorithms and how they are used is a must.Multilingual programming experience: our code base is primarily in Ruby, with a trend to migrate to GOlang and Rust.Excellent debugging, analytical, problem-solving, and social skills.BS/MS degree in Computer Science, Engineering, or a related subject, 7+ years of industry experience.Readiness to work remotely with teams distributed across the world and time zones occasionally.ADVANTAGE IF YOU HAVE1) Background in GOlang and/or Rust.2) Background in network programming.3) Background in applications and data security.4) Deep knowledge of physical DB design.5) Experience working with Docker and other isolation technologies.6) Experience working with public c

📌 Senior Backend Software Engineer (Madrid)
🏢 Chronos Consulting
📍 Madrid