AI-native Backend Engineer

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 7 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 Auto Trader, OLX, Otomoto Property
24, and more - 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.

Join one of our cross-functional teams in Motors, Real Estate, OLX Classifieds, or Platforms, working remotely from Portugal.

Are you someone who is craving scalable problems and dealing with optimizations?

You'll work with a creative, critical, and well-organized team from the comfort of your house, but as close as we have ever been!

You will play a key role in enabling our organisation to scale efficiently.

• You can use agentic workflows (Claude Code, Cursor Agent, or equivalent) as your default, not as a novelty.

• You practice context engineering, not just prompt engineering; you design the full information architecture an AI agent needs to succeed: repo structure, CLAUDE.md / AGENTS.md configs, relevant code context, memory, and tool access.

• You understand model routing trade-offs (e.g., when to use Haiku vs. Sonnet vs. Opus) and multi-agent orchestration.

• Strong ownership instinct: AI output is a first draft, not a deliverable; you validate, refactor, and take full accountability.

• You have strong Coding and Computer Science Fundamentals. Roughly ⅔ of your time will be hands-on technical work: designing solutions, steering and reviewing AI-generated code, developing new ideas, and reviewing others' contributions. The rest goes to cross-team influence, mentoring, and strategic alignment.

• Strong background experience in Golang, Java/Kotlin (preferred technologies), and able to work with PHP. Flexible and capable of adjusting to changing project requirements, roles, and backend technologies as needed.

• Scalable Systems Expertise. Experience with large-scale web applications, an economic-thinking mindset, and being able to design well-bound future-proof domain systems, aligned with the business objectives.

• Deep expertise in scalable distributed systems, CI/CD, RESTful and GraphQL APIs, AWS, and relational + No
  
  SQL databases.

• Big-picture thinker: aligns technical decisions with business strategy, influences without authority.

• Clear communicator in English across engineering, product, and leadership audiences.

• Self-starter who identifies what needs doing and takes initiative without waiting to be asked.

• Skilled Technical Leader and Mentor:
  Guide and support engineers by setting a strong example. As a Staff Engineer, you are a role model, leading by example and through your expertise.

• Architect context pipelines for AI agents: curate what enters the context window (repo boundaries, domain knowledge, test outputs, CI feedback) so agents produce reliable, mergeable code, not just plausible code.

• Prepare task specifications that are agent-actionable (clear acceptance criteria, referenced modules, explicit constraints)

• Design and maintain agent-ready systems: well-bound repos, comprehensive test suites as guardrails, CI/CD pipelines with structured output agents can parse and act on.

• Serve as an AI Champion: join and strengthen our growing AI Champion community, contribute to workshops, curate…