Mid-Senior Software Engineer

Smadex; Barcelona; Hybrid; EUR 45,000 - 68,000; Full time

Benefits offered by this job

Great compensation

Central Barcelona location

Hybrid work: 2 days WFH

Meal vouchers

Gym allowance

Training opportunities

Team events

Job summary

Smadex is seeking a Software Engineer to join its core engineering team in Barcelona. You will tackle features for the real-time bidding Open-RTB system, contribute to code reviews, and help evolve the platform.

The role emphasizes ownership, collaboration, and growth in a fast-paced, international environment, with hybrid work, competitive compensation, and opportunities across mobile and CTV markets.

Qualifications

• Bachelor's degree in Computer Science or a related technical field.
• 2-4 years of software engineering experience.
• Hands-on experience with Java or NodeJS.
• Strong knowledge of data structures, algorithms, and software design.

Responsibilities

• Design, develop, and implement new features for core products.
• Participate in code reviews and architectural decisions.
• Ensure quality with testing locally and in staging.
• Monitor deployments for stability and performance.

Skills

NodeJS

Java

Linux

Git

Docker

Data structures

English communication

CI/CD

Education

Bachelor's degree in Computer Science or related field

Tools

Docker-Compose

Jira

Notion

Job description

Smadex is a performance advertising engine for mobile apps, enabling the world's leading marketers to grow across Mobile and Connected TV (CTV). Powered by AI models trained on real campaign outcomes, Smadex delivers profitable growth at scale. Headquartered in Barcelona, with teams across the Americas, EMEA, and APAC, Smadex is a business unit of Entravision (NYSE: EVC).

The team

You will join our core engineering team, a collaborative group of 8 experienced engineers responsible for maintaining and evolving the real-time bidding (Open-RTB) auction system that powers our entire business. We foster a fast-paced, supportive environment where knowledge sharing is key. We value autonomy and will provide the platform for you to grow your career while solving complex engineering challenges.

What are we looking for?

We're looking for a knowledgeable Software Engineer who is excited by complex technical challenges. Your success will be measured by your ability to deliver high-quality features , collaborate with the team, while sharing and applying your knowledge effectively.

What will you do at Smadex?

You will dive into a dynamic environment, tackling short-cycle tasks across the core platform following a "you build it, you run it" philosophy. You will be expected to participate in code reviews, contribute to technical and architectural decisions, and collaborate in a fast-paced environment where every opinion counts.

Key Responsibilities

• Feature Ownership : Design, develop, and implement new features for core products using NodeJS and Java.
• Quality Assurance : Write clean, efficient, testable code and thoroughly test work locally and in a sophisticated staging environment.
• Operational Excellence : Monitor deployments and help ensure the stability, reliability and performance of production systems.
• Agile Collaboration : Collaborate with the team in an agile environment, participating in planning and reporting on progress.

Requirements:

• A Bachelor's degree in Computer Science or a related technical field.
• 2-4 years of experience in a software engineering role.
• Hands-on experience with Java or NodeJS.
• A solid theoretical foundation in data structures, algorithms, and software design principles.
• A genuine passion for technology and an eagerness to learn and grow professionally.
• Excellent communication skills in English (written and spoken).
• Proficiency with Linux, Git, Docker, and Docker-Compose.
• Experience with testing tools and modern CI/CD frameworks.

What Will Make You Stand Out (Bonus Points):

• Experience with Key-Value stores and in-memory databases (e.g. Redis, Memcached).
• Familiarity with cloud environments, particularly AWS.
• Languages: NodeJS, Java, Bash, Python
• Databases: MySQL
• Tools: Git, Jira, Notion

What We Offer

• Integrate a highly motivated, young and dynamic team
• Great compensation package
• Top location at the heart of Barcelona with a rooftop terrace, Barbecue, and a fully stocked fridge
• Great work-life balance: work from home (2 days per week), flexible hours
• Meal vouchers - Ticket Restaurant monthly allowance
• Monthly gym allowance: Choose between DiR and Wellhub
• LinkedIn Learning and training opportunities
• Monthly TGIF events
• Regular team-building events
• Fun and friendly work environment with talented marketers and engineers from over 40 countries
• And more!

If you want to know more about us visit our website Smadex.com , and for a sneak peek of the cool stuff we build check this video out! And, if you are ready to take your career to the next level and tackle engineering challenges at a global scale, we encourage you to apply!

Please note that we do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain won't be considered.