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Senior Software Engineer (Python)

Remote · Full-time · Senior

Why does MWDN rock?

MWDN connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We aim to ensure our employees enjoy a rewarding and secure experience while collaborating with prestigious international clients.

Here’s what you can expect when you get employed by MWDN:

  • Security first. We vet our clients to eliminate risks, ensuring reliability and timely payments for your hard work—no fraud or unforeseen events here!
  • Career support. If a match isn't right, we're here for you. We actively assist our employees in finding new opportunities that fit their skills and aspirations.
  • Legal assistance. We provide guidance on legal matters (e.g., opening and administering your private entrepreneur account, taxes, etc.).
  • Professional development. We offer English courses and other engaging activities, including team-building events.

Why choose us? MWDN is ranked among the top 5 IT employers in our region by DOU, and we pride ourselves on our transparency and commitment to our team. Curious to learn more? Discover what our employees say about us in their DOU reviews: MWDN reviews.

What is your new project?

  • Domain: AI-powered sales co-pilot 
  • Location: Israel, USA
  • Company size: up to 10 employees
  • Founded in: 2025

What makes you a great fit

  • Proven mastery of Clean Code, SOLID principles, and Design Patterns.
  • 5+ years of professional backend experience.
  • Expert in Python (typing, async, testing, best practices).
  • Experience designing and scaling RESTful APIs
  • Skilled in MongoDB and/or PostgreSQL, schema design, and optimization.
  • Strong background in cloud infrastructure (GCP, Cloud Run, Pub/Sub, Cloud Tasks).
  • Ability to build entire systems A–Z independently: architecture → implementation → deployment → monitoring.
  • Comfortable in a fast-paced, high-ownership environment — where accountability, self-direction, and bias-to-action are expected.

Will be a plus:

  • Experience with LangChain, LLM agent orchestration, or multi-model inference flows.
  • Demonstrated experience with LLM systems (OpenAI, Anthropic, LangChain, custom orchestration).
  • Familiar with RAG, embeddings, and vector stores (Weaviate, Pinecone, FAISS).

Your day-to-day in this position

  • Design, develop, and maintain backend systems using Python (FastAPI preferred).
  • Architect clean, modular, and maintainable codebases following Clean Architecture and Domain-Driven Design principles.
  • Build and scale LLM-based services — prompt orchestration, RAG pipelines, agentic workflows, and intelligent API interactions.
  • Integrate with third-party APIs (e.g. Google, Slack, Salesforce, Supabase, Tavus, etc.) and manage auth, data flow, and observability.
  • Develop internal SDKs, background jobs, and async task pipelines (GCP Cloud Tasks, Redis, Celery).
  • Write production-grade code with full test coverage and CI/CD readiness.
  • Collaborate cross-functionally with product, frontend, and AI research teams to deliver high-impact features.
  • Lead or co-own full systems A→Z — from architecture and data modeling to deployment, monitoring, and iteration.

Why work with us?

  • People-oriented management without bureaucracy
  • The friendly climate inside the company is confirmed by the frequent comeback of previous employees
  • Flexible working schedule
  • Full financial and legal support for private entrepreneurs
  • Free English classes with native speakers or with Ukrainian teachers (for your choice)
  • Dedicated HR

Our next steps

✅ Intro call with a Recruiter — ✅ Client intro interview — ✅ System design interview — ✅ Livecoding interview — ✅ Offer