Senior Fullstack Engineer – Infrastructure & Architecture

Ersilia; Barcelona; Híbrido; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A dynamic recruitment technology firm in Barcelona is seeking a Senior Fullstack Engineer to optimize AWS infrastructure and improve CI/CD pipelines. This role offers the opportunity to make significant technical decisions in a hybrid work environment. Candidates should be comfortable with automation, scalable systems, and possess strong knowledge of modern web technologies.

Servicios

Flexible hybrid working conditions

Autonomy in decision-making

Fast impact visibility

Formación

• Strong focus on infrastructure, scalability, and architecture.
• Experience with AWS services like ECS and EC2.
• Comfortable with automation and resilient systems.

Responsabilidades

• Design and optimize AWS infrastructure.
• Build and maintain CI/CD pipelines.
• Lead observability and performance monitoring improvements.
• Collaborate with teams on architecture decisions.

Conocimientos

AWS infrastructure optimization

CI/CD pipelines

Performance monitoring

Cloud security best practices

TypeScript

React

Herramientas

NestJS

Docker

MariaDB

PostgreSQL

GitHub Actions

Descripción del empleo

About Workfully

At Workfully, we’re building the first global recruitment marketplace where independent recruiters can grow, engage, and monetize their talent networks — connecting them to meaningful opportunities at innovative companies worldwide.

Our technology is designed to make recruiting more transparent, fair, and scalable. We’re a profitable early‑stage company with clients like TravelPerk, OLX, Accenture, Inditex, and FreeNow, and we’re now expanding our engineering team to build the next generation of the Workfully platform.

The Role

We’re looking for a Senior Fullstack Engineer with a strong focus on infrastructure, scalability, and architecture.

You’ll own the foundations that keep our systems fast, reliable, and observable. From optimizing AWS infrastructure to improving CI/CD pipelines, you’ll play a key role in how we scale — technically and operationally.

What You’ll Do

• Design and optimize AWS infrastructure (ECS, EC2, RDS, IAM, networking)
• Build and maintain CI/CD pipelines for efficient, automated deployments
• Lead observability, performance monitoring, and incident response improvements
• Collaborate with engineering and product teams on scalable architecture decisions
• Apply cloud security and performance best practices throughout development

Our Stack

We work with a modern TypeScript‑based stack:

• Frontend: React, Next.js, TailwindCSS
• Backend: NestJS, Sequelize, MariaDB / PostgreSQL
• Infrastructure: AWS (ECS, EC2, S3, CloudWatch), Docker, Auth0
• Testing & CI/CD: Jest, Testing Library, GitHub Actions
• Principles: SOLID, Domain‑Driven Design, Clean / Hexagonal Architecture

Who You Are

• You’re comfortable owning infrastructure and system‑level performance
• You enjoy automation and creating resilient, scalable systems
• You bring a pragmatic mindset and clear communication
• You like to balance architecture with delivery — building what matters

Why Workfully

We’re a small, product‑driven team building technology that changes how recruiting works. You’ll have the autonomy to make decisions, see your impact fast, and work alongside a group of people who care deeply about what they build.

We work hybrid —two days a week from our sea‑view office in Barceloneta, the rest wherever you work best.