Back to jobs

Senior Software Engineer

New York

MIO Partners, Inc. (MIO) provides proprietary investment products to McKinsey’s retirement plan and partners and offers independent, high-quality financial advice to McKinsey’s partners. We manage a wide array of investment vehicles with significant expertise and a long and successful track record in alternative strategies, including hedge funds and private equity. We have a multibillion-dollar portfolio of assets under management, and we manage assets for and advise only McKinsey-related clients; we do not accept outside or third-party investments.  

MIO is a values-based organization that is strongly aligned with our investors’ interests. MIO measures success as performance relative to a market-based benchmark.  

MIO, a 250+ person registered investment adviser, provides ample opportunities for somebody with an entrepreneurial drive to shine. We strive to meet the highest professional standards and build an organization that attracts, develops, and retains exceptional people. MIO is a wholly owned subsidiary of McKinsey, but our activities are kept entirely separate from those of the consulting Firm. 

 

Position

MIO’s IT team is seeking a Senior Software Engineer who will work directly on projects that improve the experience, efficiency, and performance of MIO’s applications and processes. The successful candidate will be comfortable working directly with developers, quants, architects, database admins, DevOps, and business project managers to deliver front-to-back solutions.

This individual will be part of a small team of in-house and outsource developers, making hands-on contributions to the project portfolio with emphasis on productivity and code quality, and helping build reusable tools and system components.

Additionally, the new hire is expected to work collaboratively with others in IT to realize the full life cycle of system development projects: from requirements gathering through white-boarding, application design, system design, data modeling, coding, delivery, support, and enhancements through an agile/scrum process.

This is a full-time, permanent opportunity. The Senior Software Engineer will be expected to work on-site at our Midtown, New York office 2-3 days/week.

 

Primary responsibilities

  • As part of Enterprise technology team, develop and maintain reusable model systems and processes
  • Develop and maintain new and existing self-serve tools for use by our business teams
  • Work to synthesize requirements gathered from multiple teams inside and outside IT and suggest creative solutions; where appropriate guiding us to “do it the right way.”
  • Collaborate to shape the future of our application architecture
  • Raise the bar on our development capabilities and processes
  • Organize with end users, business analysts, and other architects and developers following a scrum methodology
  • Collaborate in standardizing the development processes including technology selection, deployment steps, code reviews and IT tools

 

Primary responsibilities estimated percentage allocation

  • Relationship Building: 20% requirements gathering and brainstorming with end users
  • Heads Down Development: 80%

 

Attributes of the successful candidate

The successful candidate would exhibit the following behaviors, values, and attributes:

  • Driven by ownership. People with an ownership mindset don’t just complete tasks—they take full responsibility for outcomes. They step in to fix issues beyond their direct remit, foster collaboration, and push for excellence. They don’t point fingers; they analyze failures and work to prevent them. True owners proactively develop their skills and drive impact, ensuring the whole team succeeds.
  • Strives for excellence. The best people set a high bar instinctively—they never settle for anything less than excellence. They deliver impact without over-engineering, take initiative where others hesitate, and build high-caliber networks to stay ahead. They spot overlooked issues, reframe obstacles into opportunities, and follow through relentlessly. When others stop, they find another way. Their drive isn’t about external validation but delivering exceptional results every time.
  • Fueled by curiosity. The best people ask plenty of good questions—they challenge assumptions, seek deeper understanding, and explore beyond their domain. Their curiosity fuels continuous learning, helping them uncover insights others miss. They do not just grow themselves; they elevate those around them by sharing knowledge and pushing for better answers. For them, improvement is not a task—it’s a mindset.
  • Problem-solving excellence. Exceptional problem solvers define problems clearly, breaking down complex challenges into manageable components using structured methodologies like issue trees and the MECE principle. They prioritize issues, develop testable hypotheses, and create detailed work plans with timelines. Their structured approach ensures they address root causes, not just symptoms. They move swiftly, with a strong bias for action, yet thoughtfully, balancing efficiency with thoroughness to deliver impactful solutions.
  • Client service orientation. MIO’s ultimate clients are our investors; producing returns is our mission. Our IT team plays a critical role in enabling that mission by deeply understanding the needs of the investment team and other key functions. The best IT professionals do not just respond to requests—they put themselves in the business user’s shoes and truly grasp what drives decisions. They anticipate needs, develop high-impact solutions, and apply critical judgment, ensuring their work adds value while avoiding unnecessary complexity or cost. A successful IT person works tirelessly to understand and cater to their business needs.

 

Desired background

The preferred candidate will have strong experience writing n-tier front- and back-office applications and relatively sound knowledge in infrastructure related technologies (preferably for financial services companies, such as asset managers, hedge funds and/or broker/dealers). Candidates with strong technology qualifications outside of financial services will be considered.

  • A Bachelor of Science in Computer Science or other related discipline (although strong experience with a less directly related degree will be considered)
  • 5+ years of experience in developing large-scale Python applications with integrated testing framework in a financial services context
  • Hands-on AWS development experience
  • Formal problem solving and/or analytical training/experience a plus
  • Experience in AI technologies and machine learning a plus
  • The ability to write test-cases and implement/design testing frameworks using PyTest, DocTest and Nose Tests
  • Must be a proponent of the software development best practices including unit, functional and integration testing of their written code and good change management practice in a continuous integration environment.
  • Experience profiling and optimizing code for performance
  • Ability to write high performing SQL queries, procs, tables and views
  • Experience with tools/frameworks such as Kafka, Redis, and elastic search
  • Practical understanding of design patterns and a good intuition for system design
  • Experience with migrating and supporting applications from on-premises infrastructure to Cloud a plus

 

Initial success criteria

The successful candidate will be expected to hit the ground running, working on hands-on projects, and simultaneously contributing to MIO’s application development standards and best practices.  During the first six months, the Senior Software Engineer will have learned enough about MIO’s business, processes, and applications that they should have accomplished the following:

  • Owned some key projects and systems that are being built to enable self-serve and automation of processes followed by application developers and end users
  • Provided significant Python-based project deliverables with substantial contributions in front, middle, and back-end layers of the architecture
  • Made hands-on contributions to the progress of the project portfolio
  • Forged solid relationships with key partners, and developed a vocabulary that demonstrates a strong understanding of our products and services

Certain US states require MIO Partners, Inc. to include a reasonable estimate of the salary range for this role. Actual salaries may vary and may be above or below the range based on various factors, including, but not limited to an individual’s assigned office location, experience, and expertise. Certain roles are also eligible for bonuses, subject to MIO’s discretion and based on factors such as individual and/or organizational performance. Additionally, MIO offers a comprehensive benefits package, including medical, dental and vision coverage, telemedicine services, life, accident and disability insurance, parental leave and family planning benefits, caregiving resources, a generous retirement program, financial guidance, and paid time off.

Base salary range

$185,000 - $185,000 USD

MIO Partners, Inc. (MIO) is an equal opportunity employer. MIO will consider all applicants regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, veteran status, or disability status.  

We are committed to protecting your privacy. Please review our Applicant Privacy Policy for a detailed explanation of how we collect, use, and protect your personal information.

Apply for this job

*

indicates a required field

Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf

Cover Letter

Accepted file types: pdf, doc, docx, txt, rtf

Education

Select...
Select...
Select...

If not applicable, enter N/A

Select...
Select...

Please include the currency and provide a range if possible. Example: USD 80,000 - 95,000 or €70k–€85k.

Please include the currency and provide a range if possible.

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in MIO Partners’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Select...
Select...
Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Select...

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Select...

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.