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Lead Python Developer, New York

ION· Lab49 – Software Engineering
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New York$180k - $220k + bonusFull-timePosted 11mo ago

About the role

Lead Python Developer position at Lab49/ION in New York focusing on building scalable Python-based microservices, cloud-native AWS applications, and risk platforms within an Agile environment.

Responsibilities

  • Develop scalable Python-based microservices to process data streams using streaming, messaging, and REST technologies.
  • Design and implement robust solutions for market and credit counterparty risk platforms.
  • Utilize advanced Python features, such as context managers, decorators, and descriptors, to build efficient and maintainable code.
  • Architect and implement solutions using Consul, Docker, Kubernetes, Kafka, and Spark.
  • Collaborate with cross-functional teams in an Agile environment to deliver high-quality financial systems.
  • Create and optimize database models for SQL, MongoDB, and key-value stores.
  • Build and maintain testing frameworks using Behave and PyTest to ensure software reliability.
  • Design and implement asynchronous operations, multithreading, and multiprocessing in Python.
  • Develop and deploy cloud-native applications in AWS environments.
  • Lead the design and integration of messaging, streaming, and REST APIs.
  • Ensure high-performance, scalable solutions with consistent deployment processes.

Qualifications

  • 8+ years of commercial-grade software development experience with complex applications.
  • Strong expertise in Python 3.4+, including advanced language features, asynchronous operations, and OOP/functional programming principles.
  • Proven experience with market and credit counterparty risk platforms (optional).
  • Experience developing cloud-native applications on AWS (mandatory).
  • In-depth knowledge of microservices architecture and data modeling.
  • Expertise in messaging, streaming, and REST API development.
  • Familiarity with tools like Consul, Docker, Kubernetes, Kafka, and Spark.
  • Proficiency in Agile development methodologies.
  • Bachelor's or Master's degree in Computer Science, Engineering, Physics, Math, or equivalent work experience.

Skills

Required:Python 3.4+ featuresCloud-native applications on AWSMicroservices architectureMessaging, streaming, REST APIs

Benefits

  • discretionary bonus
  • paid holidays
  • 401(k)
  • comprehensive medical, dental, and vision coverage
  • life insurance
  • short and long-term disability
  • Commuter FSA
  • Family Building Benefits
Last updated Oct 21, 2026. Interested? Apply on the company site.

About ION

Reinventing the way business is done through automation technology

ION financial software improves decision making, simplifies complicated processes and empowers you by providing the right tools.

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