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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer (Front End) - Remote - **Company:** Smadex - **Location:** Barcelona, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Amazon Web Services, JIRA, Automation of Tests, Bash Shell, Databases, Continuous Integration, Data Structures, Linux, DevOps, Python (Programming Language), Memcached, Microsoft OneNote, MySQL, Node.Js, Redis, Software Engineering, Cloud Platform System, Google Search, Git, Solid Principles, Information Technology, Docker, Jenkins - **Published:** September 14, 2026 - **Apply:** https://www.buscojobs.com.es/senior-software-engineer-front-end-remote-en-barcelona-ID-370953929 ## About the Role 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. ~ 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. Experience with Key-Value stores and in-memory databases (e.g. Redis, Memcached). Familiarity with cloud environments, particularly AWS. NodeJS, Java, Bash, Python Databases: MySQL Tools: Git, Jira, Notion NodeJS, Java, Bash, Python Databases: MySQL Cloud & DevOps: AWS, Jenkins, Docker Tools: Git, Jira, Notion Great work-life balance: work from home (2 days per week), flexible hours LinkedIn Learning and training opportunities com, and for a sneak peek of the cool stuff we build check this video out! ## Description Smadex is a cutting-edge ad-tech company: we process more than 4,5 million ad requests per second , replying under 100ms (for reference, the Google search engine handles ~76,000 QPS).Every day we generate several TBs of data that need to be processed, analyzed and aggregated, so our real-time components get smarter every day.If you are ready to boost your professional career in the tech world, this is your opportunity.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'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.You will dive into a dynamic environment, tackling short-cycle tasks across the core platform following a "you build it, you run it" philosophy.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.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.~ 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.Experience with Key-Value stores and in-memory databases (e.g. Redis, Memcached).Familiarity with cloud environments, particularly AWS.NodeJS, Java, Bash, Python Databases: MySQL Tools: Git, Jira, Notion NodeJS, Java, Bash, Python Databases: MySQL Cloud & DevOps: AWS, Jenkins, Docker Tools: Git, Jira, Notion Great work-life balance: work from home (2 days per week), flexible hours LinkedIn Learning and training opportunities 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.# ## Related Videos - [Coffee with Developers](https://www.wearedevelopers.com/videos/354-coffee-with-developers) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [How Much Does a Software Engineer Make? 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