Senior Python Developer (US)

Checkmate-posted about 2 months ago
$150,000 - $190,000/Yr
Full-time • Senior
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We're looking for an experienced Senior Python Developer to join our team and help us evolve the core APIs that power our diverse set of customer and administrative applications. You'll be working on a large, established codebase that handles high-volume transactions for online ordering, mobile apps, and in-store kiosks. This is a highly impactful role for someone who is comfortable diving into complex systems and is a true SQL expert.

  • Design and build new REST API endpoints using Flask and the OpenAPI specification.
  • Manage complex integrations with various external and internal third-party APIs (e.g., payments, loyalty, other services).
  • Proactively identify and resolve performance bottlenecks using tools like Datadog APM, advanced SQL query optimization, indexing, and caching (e.g., Redis).
  • Work directly with MySQL without an ORM, writing and optimizing complex, custom SQL queries to interact with a database featuring hundreds of tables.
  • Refactor and modernize parts of a large, 10-year-old codebase.
  • Expand our automated test suite to ensure robustness and quality.
  • Track down and resolve complex bugs across the application.
  • Build new backend functionalities that directly expand the feature set of our consumer-facing products.
  • 5+ years of professional experience as a Python Developer.
  • Proven professional experience with Flask (strong preference) or Django.
  • A deep, professional understanding of working directly with databases and writing complex, custom SQL queries; ORM experience is not a substitute.
  • Significant experience working with and taking ownership of components within a large, established, and complex codebase.
  • Experience working on a high-performance, consumer-facing application, ideally in e-commerce (restaurant or retail industry experience is a plus).
  • Prior experience integrating with key external systems like payments, CRM, loyalty, and marketing platforms.
  • Excellent written and verbal communication skills.
  • Must be a self-starter with the ability to work independently with minimal supervision.
  • BSc in Computer Science, Engineering, or a relevant field, or equivalent experience.
  • Must be available to coordinate and be present in real-time until at least 5 p.m. US Eastern Time.
  • Hands-on experience with Celery, Redis, Docker, Linux, and AWS.
  • Health Care Plan (Medical, Dental & Vision)
  • Retirement Plan (401k)
  • Life Insurance (Basic, Voluntary & AD&D)
  • Flexible Paid Time Off
  • Family Leave (Maternity, Paternity)
  • Short Term & Long Term Disability
  • Training & Development
  • Work From Home
  • Stock Option Plan
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