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Senior Backend Engineer (Python/FastAPI/GraphQL)

WSS Associates

Senior Backend Engineer | FinTech Data Platform

We're partnering with an innovative and rapidly growing technology business that is transforming how financial data is extracted, structured, and delivered through cutting-edge AI, NLP, and machine learning technologies.

We're looking for a Senior Backend Engineer to join a high-calibre engineering team building the infrastructure behind a sophisticated financial data platform. You'll play a key role in developing scalable APIs, expanding microservices architecture, and helping bring valuable structured data products to market.

Key Skills & Experience:

  • Strong Python development experience, particularly with FastAPI
  • Excellent knowledge of GraphQL and REST APIs
  • Experience working with databases and data warehouses
  • CI/CD, DevOps and software engineering best practices
  • Comfortable working in a fast-paced, Agile environment
  • Ability to work autonomously and contribute ideas

Highly advantageous:

  • Experience within FinTech, payments, financial services, or startup environments
  • AWS experience
  • Knowledge of React, Strawberry GraphQL, or PostGraphile
  • Experience working with financial data products

What's on offer?

  • Predominantly remote culture with flexibility
  • Just a few days per month required in the New York office
  • Opportunity to work on cutting-edge AI and data-driven products
  • Fast-moving, collaborative engineering team where your ideas will have real impact

If you're a strong backend engineer who enjoys solving complex problems, building scalable systems, and working in a high-growth environment, I'd be keen to speak with you.

Vacancy posted 4 hours ago
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