You will build, lead, and develop a delivery team, setting clear standards for technical capability, case management, quality, and continuous development. You will partner with the Global Mobility & Immigration Advisory team to translate strategic solutions, complex cross-border structures, and policy decisions into scalable processes, controls, and delivery requirements.

Key responsibilities include:

• Leading the end-to-end delivery of international assignments, transfers, cross-border compliance processes, and immigration services
• Building, leading, and developing a delivery team
• Partnering with the Global Mobility & Immigration Advisory team
• Developing and continuously improving governance, delivery processes, and infrastructure
• Identifying and addressing recurring delivery issues, process gaps, control weaknesses, and service risks
• Driving enhancements to internal technology, systems, and management information
• Coordinating effective process handoffs across Global Mobility & Immigration, HR, Payroll, Tax, Legal, Finance, and other internal functions
• Managing the global mobility and immigration vendor network

To succeed in this role, you will need:

• At least 15 years of global mobility and immigration experience
• Strong leadership experience building and owning end-to-end global mobility and immigration program delivery
• Working knowledge of immigration, tax, social security, payroll, relocation, employee documentation, and vendor management
• Experience building and developing delivery teams
• Proven ability to develop and manage service-delivery infrastructure, processes, controls, workflows, and documentation
• Strong stakeholder management skills and experience overseeing external providers

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The Benefits and Wellness team supports employees through the administration, delivery, and continuous improvement of benefit, leave, and wellness programs.

Responsibilities:

• Support the design, implementation, and administration of US benefit programs, including health insurance, 401(k), leave policies, and life and disability insurance
• Coordinate the annual open enrollment process from planning through execution
• Serve as a key point of contact for benefits escalations, resolving employee questions by interpreting benefit policies and procedures
• Process and correct benefit enrollments in Workday, including new-hire elections, qualifying life events, dependent changes, and coverage corrections
• Support US leave, accommodation, and return-to-work administration as an initial point of contact
• Deliver regular benefits orientation sessions and support benefits reporting, special projects, and wellness planning
• Manage vendor onboarding and ongoing vendor relationships, partnering across Legal, Vendor Management, Compliance, Communications, brokers, and consultants to support effective service delivery
• Support wellness programming, including onsite wellness events, annual calendars, employee communications, partnerships, and benefits and wellness resources

Requirements:

• Minimum of 4 years of progressive benefits, wellness, and leave administration experience
• Working knowledge of applicable federal and state requirements, including the Affordable Care Act, COBRA, HIPAA, OSHA, and GINA
• Experience using HRIS platforms; Workday experience is a plus
• Strong vendor management skills and the ability to address service issues effectively
• Ability to plan, prioritize, and manage multiple complex projects simultaneously
• Ability to work effectively in a matrixed, collaborative environment
• Strong organization, process management, and governance skills, with close attention to detail
• Proficiency in Microsoft Excel, Word, and PowerPoint

Salary Range: The estimated base salary range for this position is $70,000 to $160,000.

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The International Payroll team supports non-US payroll operations across EMEA and APAC, managing more than 30 payrolls for over 3,000 employees.

Responsibilities

• Manage the end-to-end monthly payroll cycle for multiple EMEA countries, ensuring accurate and timely delivery from payroll cutoff through payment.
• Prepare, validate, and submit payroll inputs, including new hires, leavers, compensation changes, one-time payments, benefit deductions, leave of absence, and holiday pay.
• Review gross-to-net, variance, and payment reports; investigate discrepancies and resolve issues with the payroll provider before approval.
• Calculate and process termination payments, holiday payouts, and other payroll adjustments in line with local legislation and firm policy.
• Prepare and reconcile funding requests for net pay, tax, and social security obligations to ensure employees and authorities are paid accurately and on time.
• Support month-end finance activities, including general ledger reviews and payroll reconciliations, while maintaining clear records and audit trails.
• Partner with the payroll provider on statutory filings, year-end processes, benefits, pension enrollment, and implementation of legislative changes across covered countries.
• Serve as a trusted point of contact for employees and stakeholders, while identifying opportunities to strengthen controls, streamline processes, and automate manual work.

Requirements

• 5+ years of hands-on payroll processing experience, ideally supporting payrolls across multiple countries.
• Strong knowledge of UK payroll, including PAYE, National Insurance, statutory payments, pensions and auto-enrollment, and termination payments.
• Experience working with an outsourced or multi-country payroll provider; CloudPay and Workday experience are desirable.
• Advanced Excel skills, including lookups, pivot tables, and reconciliations, with an interest in automation and new tools.
• Exceptional attention to detail and a rigorous approach to reviewing, reconciling, and maintaining confidential payroll data.
• Ability to prioritize multiple payrolls and competing deadlines in a fast-paced, changing environment without compromising accuracy.
• A proactive, curious mindset and the confidence to challenge existing processes and recommend practical improvements.
• Clear, professional communication skills and a collaborative approach to working with employees and stakeholders at all levels; CIPP qualification, or progress toward one, is desirable.

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You will partner closely with stakeholders across the organization to identify pain points, streamline processes, and deliver products that enhance how people work.

Responsibilities:

• Partner with Human Resources teams and business leaders to identify pain points, uncover opportunities, and improve or automate trader-focused people processes through technology
• Translate business needs into clear functional designs, user stories, and product requirements that align with organizational goals and deliver measurable value
• Partner with developers and technical resources to shape scalable, practical, and fit-for-purpose solution designs
• Document solution designs in Jira and coordinate formal stakeholder approval to ensure requirements are development-ready and clearly understood
• Plan and execute quality assurance and user acceptance testing to confirm products meet functional requirements and stakeholder expectations
• Manage solution deployments and support successful adoption across the organization
• Develop user procedures, guidelines, and training materials to support the rollout of new processes and functionality
• Monitor vendor solutions and market innovations to identify tools and technologies that can improve stakeholder processes

Requirements:

• 3+ years of product management experience, preferably supporting HR systems, enterprise platforms, or process-improvement initiatives
• Strong problem-solving skills and the ability to use SQL for data analysis to translate business needs into practical solutions
• Experience designing workflows and user experience screens
• Hands-on experience planning and executing quality assurance and user acceptance testing
• Excellent written, verbal, and interpersonal communication skills, with the ability to collaborate effectively with users and development teams across regions
• Proficiency using AI tools to improve productivity, analysis, and day-to-day execution
• Experience with Appian, Workday, ServiceNow, or Jira is a plus
• Interest in financial markets, trading, and alternative investments, with strong attention to detail, ownership, accountability, judgment, and discretion when handling sensitive information

Benefits:

• Estimated base salary range: USD 70,000 to USD 160,000
• Comprehensive benefits package including discretionary performance bonus

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As a People Operations Associate, you will serve as a trusted advisor to employees and managers, providing guidance on HR policies, processes, and employee lifecycle matters while delivering a high-quality employee experience.

Key responsibilities include:

• Leading the coordination and facilitation of New Hire Orientation, ensuring a seamless, engaging, and compliant onboarding experience for new hires
• Providing proactive, high-touch support to employees throughout onboarding and beyond, managing inquiries and cases with professionalism, empathy, and accountability
• Acting as a Tier 2 escalation point for complex employee questions and issues, using sound judgment and HR expertise to identify solutions and drive resolution
• Building strong partnerships across the business and with key stakeholders, including Legal, Immigration, Information Technology, Talent Acquisition, and Payroll, to support employee needs and business priorities
• Maintaining accurate employee records and case documentation, ensuring data integrity, consistency, and compliance across Workday and other HR systems
• Analyzing trends in employee inquiries and operational processes to identify opportunities to improve service delivery, increase efficiency, and enhance the employee experience

To be successful in this role, you will need:

• A Bachelor’s degree and 3–5 years of professional experience in an HR function or in an event coordination role with program or event management experience
• Ability to prioritize effectively in a fast-paced, high-pressure environment, with a strong sense of urgency and excellent time management
• Strong attention to detail, sound judgment, and a high level of ownership over the quality and accuracy of your work
• Professional, service-oriented communication skills, with the ability to build credibility and manage stakeholders effectively
• Collaborative approach and willingness to support others, balanced with the ability to work independently and execute reliably
• Ability to handle sensitive information with a high degree of discretion and confidentiality
• Continuous improvement mindset, with the ability to support transformation efforts and contribute to more effective processes
• Experience with new hire onboarding and HRIS platforms, including Workday, is preferred; experience in financial services, process improvement, and Microsoft Office applications is a plus.

In terms of compensation, Millennium offers a total compensation package which includes a base salary, discretionary performance bonus, and comprehensive benefits. The estimated base salary range for this position is $70,000 to $160,000.

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