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Lead Python Engineer - Mainframe Systems

Job in Greenwich, Fairfield County, Connecticut, 06831, USA
Listing for: Morgan Stanley
Full Time position
Listed on 2025-12-01
Job specializations:
  • IT/Tech
    Systems Engineer
  • Engineering
    Systems Engineer, Software Engineer
Job Description & How to Apply Below

Lead Python Engineer - Mainframe Systems

Morgan Stanley is an industry leader in financial services, known for mobilizing capital to help governments, corporations, institutions, and individuals around the world achieve their financial goals.

In the Technology division, we leverage innovation to build the connections and capabilities that power our Firm, enabling our clients and colleagues to redefine markets and shape the future of our communities. This is a Lead Software Engineering position at the Vice President level, part of the job family responsible for developing and maintaining software solutions that support business needs.

Interested in joining a team that’s eager to create, innovate and make an impact on the world? Read on.

The team that you will be joining is a small, highly technical team that is part of the mainframe infrastructure team at Morgan Stanley. The team is defining new ways to integrate the mainframe into the larger ecosystem within Morgan Stanley, ensuring that the mainframe environment can seamlessly integrate with many of the processes and procedures in use globally. The team works with new innovative products and in many cases with beta versions of products, working closely with vendors to define requirements and roadmaps as well as building code, process and procedures to achieve the overall goals of the new Dev Ops for mainframe paradigm.

The entire team comprises of highly skilled people with cross realm skillsets, where everyone is very hands‑on, working on many green field projects in a highly collaborative environment, with the ability to work autonomously as well as across teams as needed. Working on new paradigms such as modern mainframe toolsets, Dev Ops pipelines, Git integration and various AI offerings.

What You’ll Do In

The Role
  • Agreeing to responsibilities for deliverables in project plans
  • Understanding requirements for the system components to be developed or updated
  • Creating and/or understanding conceptual and detailed designs for the system components being developed or updated
  • Coding additions or amendments to system components as directed by the project manager
  • Unit testing of new or amended code
  • Creating and executing test plans according to agreed project plans
  • Participating in implementation of new or amended systems
  • Escalation of issues as appropriate to the project manager
  • Following working practices used within the team
  • Providing Level 3 support - possibly after hours
  • Reviewing project documentation to understand deliverables
  • Designing, coding and testing new or amended system functionality
  • Creating system documentation as required
  • Working with other team members to ensure the success of the project
  • Providing status and progress updates to the project manager as required
What You’ll Bring To

The Role
  • Bachelor’s Degree in Engineering, Computer Science or equivalent experience.
  • 8 years of Python Dev in Mainframe or distributed systems.
  • Experience with Java Script
  • Understanding of mainframe operating systems (z/OS)
  • Experience in a Linux OS environment is highly preferred
  • Experience with either Postgre

    SQL or DB2 is highly preferred
What You Can Expect From Morgan Stanley

We are committed to maintaining the first‑class service and high standard of excellence that have defined Morgan Stanley for over 89 years. Our values – putting clients first, doing the right thing, leading with exceptional ideas, committing to diversity and inclusion, and giving back – aren’t just beliefs, they guide the decisions we make every day to do what’s best for our clients, communities and more than 80,000 employees in 1,200 offices across 42 countries.

At Morgan Stanley, you’ll find an opportunity to work alongside the best and the brightest, in an environment where you are supported and empowered. Our teams are relentless collaborators and creative thinkers, fueled by their diverse backgrounds and experiences. We are proud to support our employees and their families at every point along their work‑life journey, offering some of the most attractive and comprehensive employee benefits and perks in the industry.

There’s also ample opportunity to move about the business for those who show…

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