Full-Time

Senior z/OS Systems Engineer

Brown Brothers Harriman

Brown Brothers Harriman

5,001-10,000 employees

Private banking and wealth management

Compensation Overview

$160k - $200k/yr

+ Discretionary Bonus + Profit-Sharing + Annual Performance Bonus

New York, NY, USA

In Person

Category
DevOps & Infrastructure (2)
,
Required Skills
TCP/IP
Requirements
  • 10+ years of experience as a z/OS Systems Engineer or System Programmer, including significant experience in large-scale Parallel Sysplex environments
  • Deep expertise in z/OS architecture, internals, operations, and recovery scenarios
  • Proven experience leading complex, enterprise-level z/OS initiatives and acting as a technical authority
  • Extensive experience installing and customizing IBM program products; GRS and RMM experience preferred
  • Strong working knowledge of major subsystems, including CICS, Db2, and MQ
  • Hands-on experience with I/O configuration using Hardware Compatibility List/Device Configuration (HCD)
  • Advanced debugging and problem-determination skills across z/OS and program products
  • Strong experience with RACF; familiarity with zSecure is a plus
  • Experience writing user exits and automation using Assembler, REXX, CLIST, or COBOL
  • Experience with mainframe automation tools such as AutoOperator, OPS/MVS, or AF/Remote
  • Expert knowledge of performance and monitoring tools, including RMF, CMF, OMEGAMON, and Intellimagic
  • Experience with z/OS TCP/IP networking configuration and troubleshooting
  • Ability to work effectively in hybrid environments integrating z/OS with distributed platforms
  • Strong organizational, time-management, and communication skills (written and verbal)
  • Excellent interpersonal skills and a customer-focused mindset
  • Ability to influence technical direction across teams without direct authority
  • Comfortable operating in highly regulated, high-availability enterprise environments
Responsibilities
  • Own the architecture, design, and engineering standards for the enterprise z/OS platform, including sysplex design, availability, performance, and recoverability
  • Serve as an escalation point for complex z/OS, JES, sysplex, and program product issues
  • Define and maintain best practices for operating system configuration, resiliency, and performance optimization
  • Lead capacity planning, performance analysis, and tuning strategies aligned with business requirements
  • Lead z/OS operating system installation and customization using the IBM ServerPac process
  • Oversee installation, customization, and lifecycle management of IBM program products such as (GRS, RMM)
  • Plan and execute z/OS upgrades, refreshes, and modernization initiatives, ensuring minimal risk and business disruption
  • Apply operating system and program product maintenance on a regular and controlled basis
  • Monitor system activity and analyze performance data using industry-standard tools
  • Provide expert recommendations to application teams to improve workload efficiency and system throughput
  • Own and continuously improve disaster recovery architecture and procedures, ensuring recoverability objectives are met
  • Partner with infrastructure teams to ensure end-to-end availability across compute, storage, and network layers
  • Provide technical leadership and mentorship to system programmers and junior engineers
  • Act as a trusted advisor to application development, infrastructure, and security teams
  • Interface effectively with all areas affected by major system changes, including business stakeholders and vendor partners
  • Represent the z/OS platform in architecture reviews and enterprise technology initiatives
Brown Brothers Harriman

Brown Brothers Harriman

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Brown Brothers Harriman (BBH) provides private banking, wealth management, and investment services to private clients, institutions, and corporations. Its offerings include private wealth planning, lending, and advisory services; custody and fund services; cross-border fund solutions; and investment management across equities, fixed income, and alternatives. BBH emphasizes a client-focused, relationship-driven approach with a broad product platform that supports asset gathering, fiduciary services, and corporate lending. The company differentiates itself through a long-standing, private partnership culture, global reach with localized client service, and integrated solutions spanning private banking, investment management, and investor services. The goal is to align client interests with disciplined, value-based investing and comprehensive financial solutions, while maintaining selective, specialized client relationships and a stable, trusted brand.

Company Size

5,001-10,000

Company Stage

N/A

Total Funding

$254.9M

Headquarters

Boston, Massachusetts

Founded

1818

Simplify Jobs

Simplify's Take

What believers are saying

  • Names Rule monitoring creates immediate demand for BBH's compliance analytics.
  • InfoFX expansion into Colombian Peso deepens restricted-markets FX monetization.
  • KGI's Hong Kong mandate validates BBH's depositary, fund services, and transfer agency platform.

What critics are saying

  • Large asset-servicing mandates drive recurring fees and create concentration risk.
  • Larger global custodians can undercut BBH on price and bundled services.
  • New Kraków and London office commitments raise fixed costs if growth slows.

What makes Brown Brothers Harriman unique

  • Founded in 1818, BBH is a 200-year-old private partnership.
  • BBH combines investor services, capital partners, and private banking under one firm.
  • BBH emphasizes specialized, high-touch servicing across over 90 markets from 18 offices.

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Your Connections

People at Brown Brothers Harriman who can refer or advise you

Benefits

Private medical care

Life Insurance

Hybrid Work Options

Professional Development Budget

Wellness Program

Paid Vacation

Flexible Work Hours

Paid Holidays

Company News

Brown Brothers Harriman
Apr 10th, 2026
BBH selected to support KGI Asset Management Limited in the launch of its new Open-ended Fund Company platform.

BBH selected to support KGI Asset Management Limited in the launch of its new Open-ended Fund Company platform. April 10, 2026 * Investor Services As part of the mandate, BBH is providing a full suite of services including depositary, fund services, and transfer agency for the Hong Kong domiciled structure. Brown Brothers Harriman (BBH) today announced that they were selected by KGI Asset Management Limited (KGI) to support the launch of its new Open-ended Fund Company (OFC) platform. As part of the mandate, BBH is providing a full suite of services including depositary, fund services, and transfer agency for the Hong Kong-domiciled structure. "Backed by BBH's trusted partnership and collaborative spirit, KGI is well positioned to innovate, grow, and deliver excellence through our expanding asset management platform, said" Chilok Cheung, Fund Manager, KGI. "We're delighted to partner with KGI, one of Asia's leading asset managers, on this important milestone," said Chris Pigott, Head of Relationship Management for Asia ex Japan. "Our comprehensive capabilities, technology, and deep regional expertise enable us to deliver tailored solutions that support KGI's long-term growth objectives." About Brown Brothers Harriman (BBH) Brown Brothers Harriman (BBH) is a global financial services firm known for premium service and specialist expertise. For over 200 years, BBH North America has partnered with clients to navigate complexity, innovate with purpose, and succeed in evolving financial markets. Its 6,000 employees serve clients and their investments in over 90 markets from 18 offices worldwide. As a private partnership, BBH North America is uniquely built to put clients first - and deliver success that lasts. BBH Investor Services is a leading provider of asset servicing and operating model solutions to global asset managers and financial institutions. Asset servicing solutions include custody, global tax services, depositary and trustee, accounting, administration, and transfer agency. Operating model solutions solve platform, data, and connectivity challenges across open-architecture operating models. BBH North America support clients' growth, operational efficiency and resiliency, and streamline reporting and oversight. Brown Brothers Harriman & Co. ("BBH") may be used to reference the company as a whole and/or its various subsidiaries generally. This material and any products or services may be issued or provided in multiple jurisdictions by duly authorized and regulated subsidiaries. This material is for general information and reference purposes only and does not constitute legal, tax or investment advice and is not intended as an offer to sell, or a solicitation to buy securities, services or investment products. Any reference to tax matters is not intended to be used, and may not be used, for purposes of avoiding penalties under the U.S. Internal Revenue Code, or other applicable tax regimes, or for promotion, marketing or recommendation to third parties. All information has been obtained from sources believed to be reliable, but accuracy is not guaranteed, and reliance should not be placed on the information presented. This material may not be reproduced, copied or transmitted, or any of the content disclosed to third parties, without the permission of BBH. All trademarks and service marks included are the property of BBH or their respective owners. (C) Brown Brothers Harriman & Co. 2026. All rights reserved. IS-11431-2026-04-02

Brown Brothers Harriman
Feb 25th, 2026
BBH empowers asset managers in emerging market investing with the addition of the Colombian Peso to InfoFX(R) restricted markets capabilities.

BBH empowers asset managers in emerging market investing with the addition of the Colombian Peso to InfoFX(R) restricted markets capabilities. February 25, 2026 * Investor Services Brown Brothers Harriman (BBH) today announced an enhancement to its InfoFX(R) solution, expanding its Restricted Markets Currency offering to include the Colombian Peso. Boston, MA - Feb. 25, 2026 - Brown Brothers Harriman (BBH) today announced an enhancement to its InfoFX(R) solution, expanding its Restricted Markets Currency offering to include the Colombian Peso. This update helps asset managers navigate the complex regulatory, tax, and reporting landscape of restricted market investing. With this addition, InfoFX now offers six restricted markets on a third-party, non-custody basis, with more expected over the coming year. BBH's InfoFX platform is an automated operational FX solution for security and corporate actions related FX, in both developed and restricted markets. Restricted market currencies are not freely traded in the open market and bring challenges such as limited trading hours and varying local requirements. Fragmented processes across custodians and third party providers further complicate execution, while industry gaps in technology and data standards hinder transparency and efficiency - particularly in trade cost analysis (TCA) for restricted currencies. InfoFX offers benefits for investing in restricted markets, including: * Improved transparency across the FX lifecycle * Enhanced data quality through real time monitoring and trade level benchmarks * Increased efficiency in trade generation, netting, execution, and settlement * Comprehensive reporting to support robust pre and post trade analytics * A streamlined alternative to traditional restricted market FX execution Since 2007, InfoFX has supported asset managers' FX needs and has played a central role in evolving client operating models, especially following the introduction of third party restricted market capabilities in 2010. The automated platform serves managers of all sizes and complexities, supported 24/6 by teams across global offices. "Global volatility and growing market complexity are driving asset managers to seek deeper insights into FX execution and local market events," said Brendan Burke, Managing Director, BBH. "By integrating the Colombian Peso, BBH continues to evolve its service to address the most pressing needs of asset managers investing in these complex environments." With this enhancement - and additional markets planned - BBH reaffirms its commitment to helping clients navigate emerging markets with solutions that deliver greater efficiency, transparency, and superior outcomes in global FX execution. About Brown Brothers Harriman (BBH) Brown Brothers Harriman (BBH) is a global financial services firm known for premium service and specialist expertise. For over 200 years, BBH North America has partnered with clients to navigate complexity, innovate with purpose, and succeed in evolving financial markets. Its 6,000 employees serve clients and their investments in over 90 markets from 18 offices worldwide. As a private partnership, BBH North America is uniquely built to put clients first - and deliver success that lasts. BBH Investor Services is a leading provider of asset servicing and operating model solutions to global asset managers and financial institutions. Asset servicing solutions include custody, global tax services, depositary and trustee, accounting, administration, and transfer agency. Operating model solutions solve platform, data, and connectivity challenges across open-architecture operating models. BBH North America support clients' growth, operational efficiency and resiliency, and streamline reporting and oversight. Brown Brothers Harriman & Co. ("BBH") may be used to reference the company as a whole and/or its various subsidiaries generally. This material and any products or services may be issued or provided in multiple jurisdictions by duly authorized and regulated subsidiaries. This material is for general information and reference purposes only and does not constitute legal, tax or investment advice and is not intended as an offer to sell, or a solicitation to buy securities, services or investment products. Any reference to tax matters is not intended to be used, and may not be used, for purposes of avoiding penalties under the U.S. Internal Revenue Code, or other applicable tax regimes, or for promotion, marketing or recommendation to third parties. All information has been obtained from sources believed to be reliable, but accuracy is not guaranteed, and reliance should not be placed on the information presented. This material may not be reproduced, copied or transmitted, or any of the content disclosed to third parties, without the permission of BBH. All trademarks and service marks included are the property of BBH or their respective owners. (C) Brown Brothers Harriman & Co. 2026. All rights reserved. IS-11324-2026-02-19

The Jewish Link
Aug 22nd, 2025
Dreamliner secures investment, expands operations

Dreamliner Luxury Coaches has secured a growth investment from BBH Capital Partners and formed a strategic partnership with Clair Global. This collaboration aims to expand Dreamliner's operations beyond touring coaches. Key figures from BBH and Clair Global, including Troy Clair, will join Dreamliner's Board of Directors. The investment will support Dreamliner's growth in the entertainment and other industries, enhancing their service offerings and operational capabilities.

Brown Brothers Harriman
Aug 19th, 2025
Brown Brothers Harriman expands Philadelphia office with the addition of new Managing Director

Brown Brothers Harriman expands Philadelphia office with the addition of new managing director.

Brown Brothers Harriman
Aug 11th, 2025
BBH London moves into new office space at 10 Exchange Square

BBH London moves into new office space at 10 Exchange Square.