HR Assistant

Jupiter; Greater London; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

A leading investment management firm in Greater London is seeking an HR Operations Specialist to provide critical operational support within the HR Strategy & Operations team. This role involves managing HR inquiries, coordinating onboarding processes, and ensuring payroll accuracy. The ideal candidate has HR operations experience and strong organizational skills, with expertise in Workday being highly desirable. The company offers a hybrid work model and a collaborative environment focused on continuous improvement.

Benefits

Hybrid working model

Employee wellness programs

Qualifications

• Some previous experience in an HR administration or operations role, ideally within a professional or regulated environment.
• Strong organizational skills and proven ability to manage multiple activities while maintaining attention to detail.
• Ability to prioritize effectively and work to tight deadlines.

Responsibilities

• Manage the central HR inbox, responding to day‑to‑day queries in a timely and professional manner.
• Provide first‑line guidance to employees on HR policies and procedures.
• Coordinate the new joiner process, including preparing contracts and managing onboarding trackers.
• Input and maintain employee data across HR systems.
• Support systems configuration and troubleshooting for Workday queries.

Skills

HR administration experience

Strong organizational skills

Excellent communication skills

Workday experience

Problem-solving mindset

Tools

Workday

Job description

About Jupiter

Jupiter is one of the UK’s leading investment management companies with just under 500 employees and £47.1 billion worth of assets under management (as at 30th June 2025).

Jupiter provides investment services to individual and institutional investors through mutual funds (UK unit trusts, Luxembourg SICAVs and Dublin OEICs), separately managed accounts and sub‑advised funds. Jupiter has experienced a period of international growth with offices open in EMEA and APAC.

The majority of our employees are based in our London office located just minutes from Victoria station which provides stair‑free access from both the Underground’s Victoria line and National Rail platforms, as well as limited road crossings to the Jupiter office. Our London office was designed to encourage employees to live active, healthy lives with floor‑to‑ceiling windows that allow for greater natural light and the benefit of a private balcony, table tennis room, cycle storage and on‑site shower and locker facilities. The short distance to Green Park and St James’ Park also provides employees with a natural space to relax during their lunch break and a healthy alternative to office‑based meetings.

We offer our UK employees a 3 : 2 hybrid working arrangement where Tuesdays, Thursdays and a third day of your choice are worked from the office. The other two days may be worked from home. This facilitates collaboration and allows employees to maximise productivity whilst maintaining a healthy work/life balance.

Background

This role sits within the HR Strategy & Operations team and provides essential operational and administrative support to employees, managers, and the wider HR function. The role supports a wider team consisting of two HR Advisors and three Business Partners.

Working closely with HR Advisors, Business Partners and specialist areas, the role plays a critical part in ensuring HR processes run accurately, efficiently, and in line with Jupiter’s policies, procedures, and regulatory obligations.

It is well suited to someone with prior HR operations experience who enjoys working in a structured, process‑led environment and is looking to deepen their expertise in HR operations over time.

Key Responsibilities

Employee Lifecycle & HR Operations

• Manage the central HR inbox, responding to day‑to‑day queries in a timely and professional manner, escalating more complex matters appropriately.
• Provide first‑line guidance to employees and managers on HR policies and procedures (e.g., absence, benefits, contract queries, probation, terms of employment).
• Coordinate the new joiner process, including preparing contracts, managing onboarding trackers, creating employee files and ensuring accurate data entry in Workday.
• Process contractual changes (e.g., salary, hours, job title) in accordance with internal procedures and relevant approvals.
• Process leavers in accordance with procedure.
• Data Management & Payroll Support – Accurately input and maintain employee data across HR systems, ensuring completeness for new starters, leavers and internal moves.
• Work closely with the HR Advisors to ensure all records are updated accurately ahead of payroll deadlines, undertaking payroll input with appropriate oversight.
• Maintain high‑quality employee records, filing documentation appropriately in SharePoint.

Workday & Systems Support

• Act as a point of contact for Workday queries, providing support to employees and the HR team.
• Run routine reports and support ongoing data quality, recognising when to elevate more complex configuration or troubleshooting needs.
• Identify opportunities to streamline repeatable processes and contribute to the development of templates and simple automation where appropriate.

Compliance, Vetting & Regulatory Responsibilities

• Carry out vetting for new employees in line with policy, following up on discrepancies and maintaining accurate records.
• Monitor probation periods and ensure timely completion of reviews by managers.
• Support SMCR processes where required, including record‑keeping, tracking attestations and maintaining accurate role data.

Additional Support

• Manage and submit HR‑related invoices where required.
• Offer support to specialist areas (SMCR, L&D, Recruitment and D&I), primarily handling routine queries and escalating as needed.
• Contribute to HR project work and actively promote continuous improvement across policies, processes and employee experience.

Desired Skills / Experience

Some previous experience in an HR administration or operations role, ideally within a professional or regulated environment.

Strong organisational skills and proven ability to manage multiple activities while maintaining attention to detail.

Ability to prioritise effectively and work to tight deadlines, ensuring tasks are not dropped.

Confident in navigating HR systems; Workday experience is highly desirable.

Excellent written and verbal communication skills, with a professional and diplomatic approach.

Strong sense of ownership, with the judgement to know when to resolve issues independently and when to elevate.

Proactive, solutions‑focused mindset with an interest in refining processes and improving workflow.

Collaborative team player with the ability to build effective working relationships across HR and the wider business.

The successful candidate will :

• Take initiative and work proactively without requiring close supervision.
• Demonstrate reliability, ensuring commitments are delivered and actions are not overlooked.
• Balance independence with sound judgement on when to seek support.
• Maintain a calm, professional approach, even when handling high volumes of operational activity.

Additional Role Details

This role is subject to the Conduct Rules set by the FCA.

Don’t meet every requirement? At Jupiter we are dedicated to building a diverse and inclusive workplace, so if you are interested in this role, but don’t think your experience aligns perfectly with every listed requirement in the job description, we would encourage you to apply. You may be the right person for this role.