Senior Backend Software Engineer - Remote; Spain

Position: Senior Backend Software Engineer - Remote (Spain)

WELCOME TO OLX
At OLX, we work together to build a more sustainable world through trade
.We make it safe, smart, and convenient to buy and sell cars, find housing, get jobs, buy and sell household goods, and more. Our colleagues around the world help to serve millions of people around the world every month, through its well-loved consumer brands including OLX, Otodom, Auto Trader, Property
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Join OLX and see how far you can go
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Join Our Team as a Backend Engineer!

Join one of our cross‑functional teams in the Generative AI Innovation team, working remotely if you’re already residing in Spain
. Our team is at the forefront of GenAI‑powered solutions
, developing cutting‑edge services to enhance user experiences, optimise internal processes, and explore new business opportunities. You’ll work on scalable, high‑impact AI projects, collaborate with cross‑functional teams, and contribute to research, proof‑of‑concept, and production‑ready AI applications. As part of our 1,000+ tech team across multiple locations, you’ll collaborate with engineers, SREs, Data Scientists, and product teams to build scalable, high‑impact solutions while reporting to an Engineering Manager who will support your growth and impact.

This position is for the GenAI Platform team. As part of the GenAI Platform team, you’ll help build the core capabilities that enable teams across the company to develop, integrate, and scale products powered by Generative AI. We utilise Python and Vue 3 to develop scalable, cloud‑native applications within a microservices architecture. Our services run on Kubernetes in AWS, with automated build and deployment pipelines managed through Git Lab CI/CD.

If you’re passionate about solving technical challenges and scaling cloud systems, we’d love to hear from you!

Who We Are Looking For:

• Significant professional experience in software development with Python (preferred) or Kotlin
• Experience in large‑scale web applications, an economic‑thinking mindset, and the ability to design well‑bounded domain systems
• Experience in architecting Cloud Native solutions, AWS is a plus
• Worked in multi‑functional teams
• Believes in "you build it, you run it, you own it," ensuring high‑quality code, debugging, optimisation, and automation as key priorities.
• Experience in building AI/ML‑enabled products

What You Will Be Doing:

• Contributing to the planning, execution, and completion of backend development tasks, ensuring delivery is timely and meets quality standards.
• Developing and maintaining robust, secure, and scalable backend services as part of technical projects.
• Collaborating effectively with team members and stakeholders to ensure smooth integration and operation of backend solutions.
• Participating in code reviews, providing constructive feedback, and supporting team communication to foster a collaborative development environment.
• Applying best practices in software development, encouraging improvements, and working closely with product and frontend teams to deliver user‑centric, efficient solutions.
• Building and deploying cloud‑native backend applications using Git Lab CI/CD pipelines to AWS or similar platforms, aligning with team and organisational strategies.
• Engaging with cross‑team initiatives and contributing to broader engineering goals, such as participation in working groups or communities, to create a positive impact beyond your immediate team.

Our Hiring Process:

• Recruiter Interview
• People Manager Interview
• Live Coding
• System Design

Our Benefits:

• Being an OLX colleague brings many rewards, such as a competitive salary, a world‑class training and development programme, flexible working options, and many more location‑based benefits, which for this role include:
• Flexible benefits plan
• Health and Dental Insurance (extendable to family)
• Remote or hybrid monthly allowance (incl. transportation supplement)
• Meal Allowance
• Gym Membership
• English, Spanish & Catalan Classes
• Tax Declaration Assistance

If you think this is the role for you, send your application in English, and let’s talk!
If you’d like to learn more about us, take a look around our careers page and the OLX Group website. Follow us on Linked In and check out the OLX Group Engineering Blog and Twitter Tech.
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