Backend Engineer (f/m/d)

JR Spain; Barcelona; Presencial; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A leading recruitment software company in Barcelona seeks a mid-level Backend Engineer. You will shape the technical foundation of the platform and collaborate with cross-functional teams to create stable, scalable solutions. Responsibilities include backend service development and participating in Agile processes. Ideal candidates have strong experiences in backend development and effective communication skills. Join a dynamic team prioritizing mentorship and inclusivity.

Servicios

104 days remote (post-probation)

Regular team events

Best hardware for the job

Formación

• 3+ years of experience in backend development with strongly typed languages.
• Experience with any RDBMS and writing unit/integration tests.
• Familiarity with message brokers, proactive, and reliable.

Responsabilidades

• Collaborate with teams through Agile processes.
• Define requirements and propose scalable technical solutions.
• Conduct code reviews and improve the codebase.

Conocimientos

Backend development

Strong communication skills

Collaboration in cross-functional teams

Problem-solving mindset

Herramientas

RDBMS

TypeScript

GraphQL

AWS

Descripción del empleo

Social network you want to login/join with:

• 104 days per year to be used anywhere (post-probation), following our 3:2 hybrid policy.
• Regular team events.

Why this role matters

At JOIN, we believe hiring should be easy, fast, and fair – for companies and candidates alike. That’s why we’re building intuitive, powerful recruiting software that helps businesses of all sizes find the right people effortlessly.

As a mid level Backend Engineer, you’ll play a crucial role in shaping the technical foundation of our platform. From clean architecture and test-driven development to meaningful product collaboration, your work will directly impact how JOIN delivers a fast, stable, and reliable experience to our users.

Perks

• 104 days per year to be used anywhere (post-probation), following our 3:2 hybrid policy.
• Regular team events.

Why this role matters

At JOIN, we believe hiring should be easy, fast, and fair – for companies and candidates alike. That’s why we’re building intuitive, powerful recruiting software that helps businesses of all sizes find the right people effortlessly.

As a mid level Backend Engineer, you’ll play a crucial role in shaping the technical foundation of our platform. From clean architecture and test-driven development to meaningful product collaboration, your work will directly impact how JOIN delivers a fast, stable, and reliable experience to our users.

Tasks

What you’ll be doing

Your work will directly influence JOIN’s product quality, architecture, and customer impact. Here’s what that looks like:

• Collaborate with frontend engineers, product managers, and DevOps teams through our custom Agile SDLC/Kanban process.
• Contribute to requirement definition and propose scalable technical solutions that serve real customer needs.
• Conduct peer code reviews and participate in retrospectives to continuously improve our codebase and culture.
• Build scalable and well-tested backend services, using clean architecture, linters, code generators, and coding conventions.
• Demonstrate ownership, accountability, and clear communication across cross-functional teams.
• Engage in technical retrospectives and help shape topics such as testing culture, automation, and architecture.

Who you’ll work with

You’ll collaborate closely with Product, Frontend, Platform, and other Backend engineers, all of whom value clean, scalable code and open communication. You’ll be part of a team that believes in mentorship, self-sufficiency, and shared ownership

Requirements

What we’re looking for

We don’t believe in checklists – but if most of these apply to you, we’d love to chat:

3+ years of experience in backend development (strongly typed languages or TypeScript).

Experience with any RDBMS (via raw queries or ORMs).

Solid experience writing unit and integration tests.

Familiarity with message brokers like SNS, RabbitMQ, Kafka, or Google PubSub.

Proactive and reliable, with a sense of ownership and accountability.

Strong communication and collaboration skills in cross-functional teams.

Growth mindset – eager to learn and quick to pick up new technologies.

Nice to have:

• Experience with GraphQL.
• Cloud exposure (GCP or AWS).
• Knowledge of gRPC and protocol buffers.
• Understanding of SOLID principles.

Benefits

Our Values

️ People First – We put humans at the heart of hiring.

? Own It – We take initiative and solve problems independently.

? Work Smarter – Efficiency beats effort.

? Be Bold – Challenge the status quo and push boundaries.

At JOIN, we thrive in a fast-moving, collaborative environment, and we’re looking for people who do too. That means:

• We follow a hybrid model (3 days office, 2 remote) to promote collaboration.
• We adapt quickly and embrace change.
• We continuously challenge ourselves and each other to improve.

This role might not be ideal if:

• You prefer a highly structured environment.
• You want a fully remote position.
• You prefer minimal change and a slower pace.
• You’re not excited about ownership and growth.

What’s in it for you?

? Apple hardware – The best tools for the job.

? Team events – Brunches, sports activities (football, volleyball, bowling), and quarterly gatherings.

? Productivity from Everywhere – 104 days per year remote (post-probation), following our hybrid policy.

What to expect from the hiring process

We respect your time and keep things transparent:

Intro call (~30 min) – Let’s see if we’re a good match.

Hiring Manager Review – Your profile is assessed for technical and team fit.

Hiring Manager Interview (~60 min) – Dive into expectations and team dynamics.

Technical Interview (~60–120 min) – Demonstrate your skills.

Meet the Team (Optional) – Connect with your future colleagues.

You’ll always know where you stand - no black holes, no ghosting.

We welcome applications from individuals of all ages, abilities, genders, religions and diverse backgrounds. If you need assistance during the hiring process or in the workplace, let us know!

Don’t meet every requirement? No problem! We’re always open to exceptional candidates and value diversity in all forms.

? Apply now – We’d love to connect with you!

At JOIN, we are revolutionizing the way companies and candidates connect in the fast-paced world of recruitment. Our platform simplifies hiring, making it more efficient and accessible for businesses of all sizes, from startups to enterprises. By providing intuitive tools and leveraging cutting-edge technology, we help companies reach top talent quickly and seamlessly.

We believe that recruitment is more than just filling roles – it’s about building teams that drive innovation, growth, and success. Our diverse and passionate team is dedicated to supporting businesses through every step of the hiring journey.

Our success is defined by the success of our partners, clients and candidates, and we are committed to delivering top-notch solutions that meet their unique needs. You are the only missing piece in the puzzle!