We are a growing green tech start-up based in Coimbra (Portugal). Our purpose is to make sustainability happen in the real world and in real businesses. We're an experienced company in the circular economy field and we work every day to be the best company in the world in this area. We've proved our worth and raised a 3M€ seed round to bring impact to the community - each item circulated through LoopOS increases the world's green footprint.
As a team, we are highly motivated to do remarkable things every day. We Loopers are exceptional people, passionate about our mission and dedicated to deliver the best circular economy solutions to our customers and partners!
Our visionary experienced founders are ready to invest in hard-working people. We have a new chapter to write and want to give you the opportunity to shape your future and the future of circularity.
Let's make it circular!
About the Role
We are looking for a Senior Fullstack Product Engineer to join our team and help build robust, scalable solutions for the circular economy. You will work on developing and maintaining our core product using modern web technologies and best practices.
Key Responsibilities
* Design, develop, and maintain backend systems using Ruby on Rails and modern frontend technologies.
* Build and maintain reusable components using ViewComponents.
* Build and optimize database schemas and queries using PostgreSQL.
* Manage caching layers with Redis.
* Ensure the performance, security, and scalability of applications.
* Write clean, maintainable, and well-documented code.
* Collaborate with product and design teams to deliver high-quality solutions.
* Ensure code quality and PRD alignment through testing, delivering ready-to-deploy features.
* Participate in code reviews and provide constructive feedback to team members.
* Implement and maintain automated tests to ensure code quality and reliability.
* Track and monitor system health status via logging, metrics and alerts.
* Troubleshoot and resolve issues in a timely manner.
* Stay up-to-date with emerging technologies, industry trends, and best practices.
Required Skills
* 5+ years of professional experience in backend or full-stack development.
* Ability to design and implement scalable system architectures.
* Practical experience using Hotwire (Turbo and Stimulus).
* Experience building component-based architectures with ViewComponents.
* Strong understanding of web performance optimization techniques.
* Proficiency with relational databases and expertise in query optimization.
* Hands-on experience with caching technologies (Redis or similar).
* Solid knowledge of designing, developing, and integrating RESTful APIs.
* Experience with automated testing frameworks and practices (e.g., RSpec,..).
* Proficient understanding of version control systems, especially Git.
* Understanding of agile teamwork and lean project management methodologies.
* Ability to quickly adapt to fast-moving product requirements and priorities.
* Proactive mindset with the ability to take initiative and operate independently.
We believe fast learning velocity Software Engineers can swiftly adapt to new tools and but we also value past experience with the programming languages and tools in our current tech stack: Ruby on Rails, Hotwire: Turbo and Stimulus, ViewComponents, PostgreSQL, Redis, React JS, GitLab, HTTP / REST / WebSockets, Docker and Kubernetes, and others…
Nice to have
* A degree in Computer Science, Engineering or a related field.
* Familiarity with OneFlow and CI/CD principles and modern deployment workflows on Kubernetes.
* Experience in fast growing start-up.
Find out what is like to work at LoopOS
* Youthful and friendly entrepreneurial spirit, we support each other relentlessly.
* We highly value our productivity and strive to maintain an optimal work-life balance.
* Career development and significant growth within the company, we push each other to excel every day.
* Integrative team-buildings and outdoor activities, we value our day-to-day out of the office.
* Opportunity to work close to big companies, we never want to stop growing.
* Health insurance, + 26 days of holidays per year and a Coverflex budget per month.
At LoopOS we are committed to create an inclusive and diverse workplace. Our employment decisions are based without regard to race, religion, color, age, genetic information, sex, sexual orientation, gender, gender identity, gender expression, citizenship, ancestry, marital status, physical or mental disability, pregnancy or childbirth. If you need assistance and/or accommodation, please let us know.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Engineering and Information Technology
Industries
Software Development
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