Senior Backend Software Engineer

Senior Backend Software Engineer – 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 serve millions of people every month through our well‑loved consumer brands including OLX, Otodom, Auto Trader, Property
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Join OLX and see how far you can go. Join our team as a Senior Backend Engineer, working remotely from Poland. As part of our 1,000+ tech team across multiple locations, you’ll collaborate with engineers, SREs, and product teams to build scalable, high‑impact solutions, while reporting to an Engineering Manager who will support your growth and impact. We use Golang and Kotlin, modernizing systems as we transition from legacy PHP and move toward a microservices architecture, deploying through Git Lab CI/CD to AWS.

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

• A product‑minded engineer who thinks from a user perspective, understanding both the how and why behind technical solutions.
• Someone with deep knowledge of programming languages, frameworks, and best practices, with strong mastery of data structures, algorithms, and software architecture to build and scale cloud‑based systems.
• A backend engineer with strong background experience in Golang, Java/Kotlin, or PHP (preferred technologies). Flexible and capable of adjusting to changing project requirements, roles, and backend technologies as needed.
• 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.
• Someone with solid experience with relational and non‑relational databases (MySQL, Dynamo
  
  DB, Redis, Memcached) and a strong understanding of AWS cloud architecture and Infrastructure as Code tools (Terraform, Cloud Formation).
• A professional with experience in large‑scale web applications, an economic‑thinking mindset, and being able to design well‑bounded domain systems.

• Leading the planning, execution, monitoring, and completion of projects, ensuring timely delivery and adherence to quality standards.
• Contributing to complex technical projects, ensuring robust, secure, and scalable software solutions.
• Mentoring and guiding junior engineers, fostering a collaborative and productive work environment.
• Driving innovation by encouraging new ideas, shaping software development, and collaborating closely with product management to create user‑centric solutions.
• Developing and deploying cloud‑native solutions using Git Lab CI/CD to AWS, contributing to broader engineering strategy and cross‑team collaboration.
• 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.

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

• Monthly salary and an annual bonus (15%)
• Training and conference budget and free access to Udemy courses
• A benefits package with 300 points on the Mybenefit platform per month, private medical care provided by Luxmed, Ask Henry services, and much more
• IP‑rights costs
• 100% remote work (as well as the possibility of working from our offices in Poznan and Warsaw)

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. 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.

Seniority level:
Mid‑Senior level.

Employment type:

Full‑time. Job function:
Engineering and Information Technology.