Senior Backend Software Engineer (Python) - Remote (Portugal)
Remote Portugal, Portugal
OLX – Data Science and Analytics /
Remote
WELCOME TO OLX
We're building marketplace sustainable ecosystems that millions of people depend on every month – to buy and sell cars, find homes, land jobs, and trade secondhand goods. It's commerce that matters: safe, smart, and environmentally responsible.
We do this with courage to innovate, commitment to outcomes, collaboration across 50+ nationalities and 8+ markets, and a customer-led approach that puts real people first. Add a desire to win – and you get a culture that's ambitious, fast-moving, and built on trust.
Our brands – including OLX, Otomoto, and Otodom – are loved by millions. And we're backed by Prosus, one of the world's largest tech investors.
Join OLX and see how far you can go.
We design, build, and run the internal data platforms that keep the company moving. Our systems power the metrics, experiments, and tools that every team uses to make decisions.
Here are some of the practical projects we drive:
Tracking ecosystem: we handle the flow of tracking data from millions of users across many countries. This data is the backbone of the company’s main metrics and helps everyone make informed decisions.
Change Data Capture service: we built our own CDC system to capture and replicate database changes in near real-time. It keeps data fresh and consistent wherever it’s needed.
Experimentation platform: we run the in-house A/B testing and feature flag system. It supports 40+ experiments every month, helping teams test ideas and improve the product.
Console: we maintain the internal self-service platform that brings together UI and backend tools in one place, so employees can easily access and manage data products and internal systems.
We’re an experienced team that takes ownership from design to release. We keep quality high but stay pragmatic: we help each other out, share knowledge openly, and raise issues early to keep things moving. We value different perspectives and believe the best solutions come from open discussion and collaboration.
If you like working on systems that matter, in a team that trusts each other and values both skill and teamwork, you’ll feel at home here.
About you:
- A product-minded engineer who thinks from a user perspective, understanding both the how and why behind technical solutions.
- Deep knowledge of programming languages (we use mostly Python), frameworks (Flask, FastAPI), and best practices, with strong mastery of data structures, algorithms, and software architecture to build and scale cloud-based systems.
- A problem solver who can break down complex challenges into manageable solutions using both analytical thinking and creativity.
- An effective communicator who can explain technical concepts to both technical and non-technical stakeholders while documenting technical specifications and processes clearly.
- A developer who believes in "you build it, you run it, you own it," ensuring high-quality code, debugging, optimization, and automation as key priorities.
What you will be doing:
- Contributing to complex technical projects, ensuring robust, secure, and scalable software solutions.
- Mentoring and guiding junior engineers, fostering a collaborative and productive work environment. This includes delegating tasks, providing feedback, and facilitating team communication.
- Driving innovation by encouraging new ideas, shaping software development, and collaborating closely with product management to create user-centric solutions.
- Creating impact outside of your team by helping drive the Engineering strategy and contributing to cross-team collaboration through inter-team working groups or community guilds, among others.
Our Hiring Process:
Recruiter Interview
People Manager Interview
Live Coding
System Design
Our Benefits:
- A competitive salary with annual bonus (15%),
- A world-class training and development program, flexible working options, and many more location-based benefits which for this role include:
Flexible benefits plan
3 extra vacation days
Health Insurance (extendable to family)
Life Insurance
Remote or hybrid monthly allowance (incl. transportation supplement)
Meal Allowance
Urban Sports subscription (pack M)
English & Portuguese Classes
Marriage Bonus
New baby bonus
Discount website
Welcome pack.
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 Linkedin and check out our OLX Group Engineering Blog.
Diversity, Equity and Inclusion at OLX
OLX values diversity and welcomes applicants of all races, ethnicities, disabilities, ages, genders, sexual orientations, religions, backgrounds, and experiences to apply. If this role excites you, we encourage you to apply, even if you don’t meet all the requirements - you may be just the right fit for this or other opportunities with us!
OLX will process your personal data to assess your fit for the applied position. You may optionally consent to store your data for up to 12 months after the application process for consideration in future OLX roles. For more details on how your application data will be processed please check our Privacy Statement.
Grupa OLX sp. z o.o. has implemented an internal procedure for reporting violations of the law. You have the right to report a violation of the law via website or by phone using any of the phone numbers listed on this site. The verification of reports and the undertaking of follow-up actions are handled by authorized members of the ethics and compliance team. All reports will be treated with the utmost care, confidentiality and in accordance with applicable law.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
