Lead Rust Engineer

ERNI - Swiss Software Engineering; Barcelona, Madrid, Valencia; Híbrido; EUR 90.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Certification coverage up to €1,400

Private health and travel insurance

Extra sick-leave days

Support services

Referral bonuses

23 vacation days

Free language courses

Descripción de la vacante

ERNI - Swiss Software Engineering in Spain is seeking a hands‑on Lead Rust Engineer to set the technical direction of a cross‑functional team and drive high‑quality delivery.

You will lead by example, mentor engineers, and shape scalable, secure Rust services while collaborating with Product, QA, DevOps and Architects in a hybrid work model.

Formación

• Bachelor’s degree (or equivalent) in software/electrical engineering or related field.
• Rust development experience (≥4 years) with ownership, lifetimes, and async/await concepts.
• Proficiency with Rust libraries/frameworks (Tokio, Actix-web, Rocket, Serde, SQL) and FFI.
• Experience with Linux containers (Docker, Kubernetes) and scripting.
• Experience with message brokers (RabbitMQ) and event-driven architecture.
• Exposure to AI-enabled software development and cloud-native architectures.
• Familiar with DDD, TDD/BDD and SAFe/Agile practices.

Responsabilidades

• Define and communicate the team’s technical vision and architecture.
• Convert business needs into scalable, secure Rust services.
• Design, build and maintain Rust services.
• 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.
• Collaborate with Product, QA, DevOps and Architects.
• Communicate technical concepts clearly in Agile/SAFe ceremonies.

Conocimientos

Rust development

Ownership & lifetimes

Async programming

DDD/TDD/BDD

SAFe/Agile

Educación

Bachelor’s degree in software/electrical engineering

Herramientas

Tokio

Actix-web

Rocket

Serde

SQL

Docker

Kubernetes

RabbitMQ

Descripción del empleo

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 the 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.

The ideal candidate is an experienced Rust software engineer with a proven track record of leading technical initiatives in complex software environments. You enjoy solving challenging technical problems while empowering others to perform at their best.

You lead by example, encourage open communication and create an environment where engineers can grow and deliver their best work.

What you will bring

• 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).
• SAFe/Agile experience is essential.

Nice to have

• Background in regulated domains
• React and automated UI testing experience

You will be responsible for

• Define and communicate the team’s technical vision and architecture.
• Convert business needs into scalable, secure solutions.
• Design, build and maintain Rust services.
• 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.
• Communicate technical concepts clearly in Agile/SAFe ceremonies.

What if the project ends?

We work on a wide variety of projects, technologies, and sectors, allowing you to keep growing in different environments. If a project ends or you feel ready for a new challenge, we’ll find another one that aligns with your professional development.

We ask you to be available for key meetings. Need to leave for a doctor’s appointment or to pick up your child from school? No problem. We trust you to deliver quality work within your 40‑hour workweek.

Our model is hybrid: we usually go to the office 2 days a week, but we love seeing each other’s faces; the best stories always happen in the office!

You will also enjoy

• We cover your certifications and reward 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.
• Referral bonuses: up to €6,000 per candidate and €5,000 per client.
• 23 working days of vacation.
• Free language courses: English, Spanish, Catalan and German.

And the salary?

We will discuss it during the first call. If it is important to you, feel free to ask.