[Hiring] Senior Backend Engineer @YourHero/Douleutaras

Role Description

Hi 👋 — I'm Pavlos Kallis, Head of Engineering at Douleutaras (YourHero). We're looking for a senior backend engineer who wants to own hard problems end-to-end, cares more about the person on the other side of the code than about the ticket, and leaves our systems better than they found them.

What you'll actually work on:

• The matching & bidding engine: When a customer posts a job, we decide which professionals see it, in what order, and how they bid for it — the ranking, pro-scoring (refreshed hourly), and Extra Bids systems behind "who gets this job."
• Money that has to be right: Online payments, pro subscriptions, cashback and bonuses, promo codes, VAT in quotes — moving money between customers, pros, and us across three countries and currencies, wired into Stripe and our Softone ERP.
• Keeping it fast and boring while it grows: We migrated the whole platform onto Kubernetes and run platform-wide performance epics. You'll help keep a zero-downtime system quick and unexciting to operate.
• Trust & safety: A healthy experimentation culture (real A/B/C tests on live funnels), Salesforce/CRM integrations, and an AI stack (FastAPI + LangGraph agents doing RAG over pgvector).

Qualifications

• 5+ years building and scaling production backend services, with strong Python / Django and REST API depth.
• Designed systems, not just implemented tickets — define service and API boundaries, weigh architectural trade-offs.
• Real PostgreSQL depth at scale — data modeling, query optimization, indexing, and keeping correctness under concurrency.
• Asynchronous / distributed systems experience — background processing, queues (Celery or similar).
• Own what you ship in production — comfortable with observability, debugging live incidents.
• Experience leading projects end-to-end and lifting the engineers around you — technical direction, serious code review, mentoring by example.
• Comfort with Docker + Kubernetes, a major cloud (AWS preferred), and CI/CD.
• Excellent English and interest in joining a remote, multicultural team.
• Bonus points: Terraform (IaC), FastAPI, LLM & agentic experience (LangChain, LangGraph, RAG, pgvector), payments/fintech or marketplace background, startup or high-performance-team environment.

Requirements

• You can't stand corporate bureaucracy — we move fast with minimal process.
• You take ownership of ambiguous, high-stakes problems.
• You care deeply about correctness and data.
• You balance speed and quality.
• You communicate with candor and welcome direct feedback.
• You act like an owner — accountable, goal-oriented, and generous with teammates.

Benefits

• Competitive compensation and potential stock options.
• Group Health Insurance.
• The workstation of your choice.
• A bespoke development plan to grow fast and reach your potential.
• Genuine ownership of impacting millions of customers and thousands of pros.