As a Senior Python Developer, you'll build financial systems, develop microservices, and utilize cloud-native technologies on AWS, while ensuring code quality and performance.
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.
Similar Jobs
Cloud • Digital Media • News + Entertainment • On-Demand
Manage and grow programmatic, reseller, and data-driven advertising partnerships. Handle SSP trafficking, deal setup, campaign lifecycle support, partner performance analysis, cross-functional coordination, and reporting to drive ad revenue and optimize ad operations.
Top Skills:
Ad ServerAi Tools (ClaudeClaude CoworkCtvDspsGemini)Pmp/Deal SetupProgrammatic AdvertisingSsps
Artificial Intelligence • Fintech • Insurance • Marketing Tech • Software • Analytics
Handle inbound calls and warm leads to assess customers’ insurance needs, recommend appropriate Property and Casualty coverages, and convert prospects into policyholders. Representatives receive paid training and licensing support, work remotely, maintain customer-focused communication, and meet sales goals through persuasive consultation. The role requires a flexible schedule of four weekdays and one weekend day, with evening shifts for at least six months.
Top Skills:
PcWired High-Speed Internet
Fintech • HR Tech
Build and own full-stack services and APIs enabling businesses to offer and manage 401(k) plans. Design scalable features, evolve system architecture, establish engineering best practices, collaborate with product, design, compliance, and operations, debug production issues, and improve reliability, observability, and operational tooling. The role requires end-to-end system ownership, production support, and cross-team technical influence.
Top Skills:
Amazon SqsAPIsGraphQLMessage-Based SystemsNservicebusReactRuby On RailsSidekiq
What you need to know about the NYC Tech Scene
As the undisputed financial capital of the world, New York City is an epicenter of startup funding activity. The city has a thriving fintech scene and is a major player in verticals ranging from AI to biotech, cybersecurity and digital media. It also has universities like NYU, Columbia and Cornell Tech attracting students and researchers from across the globe, providing the ecosystem with a constant influx of world-class talent. And its East Coast location and three international airports make it a perfect spot for European companies establishing a foothold in the United States.
Key Facts About NYC Tech
- Number of Tech Workers: 549,200; 6% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Capgemini, Bloomberg, IBM, Spotify
- Key Industries: Artificial intelligence, Fintech
- Funding Landscape: $25.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Greycroft, Thrive Capital, Union Square Ventures, FirstMark Capital, Tiger Global Management, Tribeca Venture Partners, Insight Partners, Two Sigma Ventures
- Research Centers and Universities: Columbia University, New York University, Fordham University, CUNY, AI Now Institute, Flatiron Institute, C.N. Yang Institute for Theoretical Physics, NASA Space Radiation Laboratory



