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techroles

Lead Python Developer, New York

ION Group iongroup.com Open · verified Oct 24, 2026
On-site New York Full-time Senior Backend Engineering

At a glance

Senior Backend Engineering role at ION Group. New York · full-time · $180,000–$220,000 base.

SalaryStated by ION Group
$180,000 – $220,000
Base salary for this role, in USD per year, as published in the posting.
This role, from ION GroupOur estimate for the market: $184,538–$225,156Median $203,000
The range includes the market median of $203,000 for senior backend engineering roles in New York.
Worked out from 76 postings that stated pay, median $203,000. Last updated Oct 21, 2026.
RoleBackend Engineering
SenioritySenior
LocationNew York
WorkplaceOn-site
EmploymentFull-time
Base pay$180,000–$220,000
PostedJul 9, 2018 · 8y ago
Role brief

techroles summary, based on the employer's posting.

What you'll do

  • Build Python microservices that handle data streams through messaging, streaming and REST interfaces
  • Design systems for market and credit counterparty risk platforms, then improve their data models
  • Use advanced Python techniques to write maintainable code and support asynchronous, threaded and multiprocess work
  • Create and run tests with Behave and PyTest, and deploy cloud-native applications on AWS
  • Integrate Consul, Docker, Kubernetes, Kafka and Spark into scalable systems with consistent deployments

What you bring

  • At least eight years developing complex software for commercial use
  • Strong Python skills, including asynchronous work and object-oriented or functional programming
  • AWS cloud application development experience, which is required for the role
  • A degree in computer science, engineering, physics or math, or equivalent professional experience

Who this fits

This New York role is onsite and suits a senior Python developer focused on financial systems, microservices and cloud applications. The posting says market and credit counterparty risk platform experience is optional. It also notes hiring at multiple levels, from mid to senior.

From the employer

The Role Lab49 is seeking a skilled Python Developer to work on complex and challenging projects that drive transformative change for top-tier financial services clients. The role involves building next-generation financial systems, developing high-quality, scalable microservices, and creating systems to process various data streams using cutting-edge technologies. Operating in an Agile environment, this position requires strong expertise in Python, experience with market and credit counterparty risk platforms, and proficiency in developing cloud-native applications on AWS.

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.

DESIRED SKILLS AND EXPERIENCE

  • 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.
We are hiring across multiple levels for this job. The base salary range across different levels are: • Mid to Senior level – $180,000 - $220,000 Placement within the range provided above is based on the individual’s relevant experience and skills for the role and level. We are hiring across multiple levels for this job. Base salary is only one component of our total compensation package. Employees may be eligible for a discretionary bonus, which is determined upon company and individual performance. Salary range disclosure as required by S9427A when hiring in New York. Our total rewards program is designed to support employee well-being and professional growth. We offer a competitive benefits package including a discretionary bonus, paid holidays, a 401(k), and comprehensive medical, dental, and vision coverage. Additional benefits include life insurance, short and long-term disability, Commuter FSA, Family Building Benefits, and more. All benefits are subject to eligibility requirements. Lab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business. Lab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.
Opportunity

Backend Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Backend Engineering$180k+

Find me work

By the team behind techroles.

Find me work
Opportunity

Backend Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind techroles.