Lead Rust Engineer

Do you want to work for an International Service Delivery Center in Spain as a Lead Rust Engineer? Join ERNI to build reliable, scalable software for medtech domain that makes a real impact on patients. We’re looking for a hands‑on Lead Rust Engineer to set the technical direction of a cross‑functional team and drive high‑quality delivery.

Si desea conocer los requisitos para este puesto, siga leyendo para obtener toda la información relevante.
Qualifications

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• Bachelor’s degree (or equivalent) in software/electrical engineering or a related field.
  
• Strong, hands‑on Rust development experience (preferably more than 4 years) with deep understanding of core Rust concepts (ownership, borrowing, lifetimes) and asynchronous programming (async/await).
  
• Proficiency with Rust libraries/frameworks (Tokio, Actix‑web, Rocket, Serde, SQL), and Foreign‑Function Interfaces.
  
• Experience with Linux containers (Docker, Kubernetes) and basic scripting.
  
• Experience with message brokers (e.g. RabbitMQ), event‑driven architecture, event stores, event sourcing, and actor models.
  
• Experience with applying design patterns relevant for distributed systems.
  
• Exposure to AI‑enabled software development practices and modern cloud‑native architectures.
  
• Familiar with Domain‑Driven‑Design (DDD), Test‑Driven Development (TDD) and Behavior‑Driven Development (BDD).
  
• English fluent.
  
• SAFe/Agile experience is essential.
  

Nice to have

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• Background in regulated domains
  
• React and automated UI testing experience
  
• German language skills
  
• ISAQB or similar architecture qualification
  

Responsibilities

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• Define and communicate the team’s technical vision and architecture.
  
• Convert business needs into scalable, secure solutions.
  
• Design, build and maintain Rust services.
  
• Lead async/concurrent development (Tokio, Serde, Actix, etc.).
  
• Oversee deployments on Docker/Kubernetes.
  
• Promote code reviews, automated tests and CI/CD.
  
• Apply DDD, TDD/BDD and best practices for distributed systems.
  
• Design reliable messaging and event‑driven patterns.
  
• Mentor engineers and remove technical blockers.
  
• Foster a collaborative, inclusive team culture.
  
• Support planning, estimation and prioritization.
  
• Work with Product, QA, DevOps and Architects.
  
• Coordinate technical dependencies across teams.
  
• Communicate technical concepts clearly in Agile/SAFe ceremonies.
  

Benefits

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• Certification reimbursement and rewards for technical achievements up to 1,400 €.
  
• Private health and travel insurance.
  
• Full coverage for sick leave + 1 extra day off per month without medical leave.
  
• Free emotional, legal and family support.
  
• Gym discounts and sports compensation.
  
• Flexible remuneration: meals, transport, childcare, etc.
  
• Referral bonuses up to 6,000 € per candidate and 5,000 € per client.
  
• 23 working days of vacation. xqbhyrx
  
• Free language courses: English, Spanish, Catalan and German.
  

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