At Amentum, we're not just solving problems — we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values diversity and ethical excellence, this is the place where your ambition can thrive.

We believe success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all. If you're ready to join a team that values your unique perspective and is committed to your safety, well-being, and professional growth — we’d love to hear from you. 

For our HR Global Delivery (GDO) team in Krakow we are seeking a HR Services Specialist - UK/ Specjalista/ Specjalistka ds. Obsługi Pracowników UK.

The selected candidate will be employed by Critical Mission Services Sp. z o.o., part of Amentum.

Responsibilities:

• Utilizes knowledge management system to respond to requests from HR staff, managers and employees on HR or Payroll policies, procedures, and tools

• Cooperates with Payroll and other HR teams on queries received by the team

• Navigates on company’s systems and tools and explains their functionality

• Processes information, data, transactions, and letter related to HR or Payroll data

• Tracks customer contacts and inquiries in case management system

• Monitors case management system and reassigns tasks to appropriate teams

• Escalates necessary matters to policy owners for resolution

• Possesses strong interpersonal skills to successfully build productive relationships at all levels of the enterprise

• Conveys a professional, knowledgeable, helpful and confidential approach

• Participates in special tasks and projects in order to support supervisors, teams and other stakeholders

Requirements

• 1 year or more in HR or Payroll, or in a call center environment

• Proficiency with Microsoft applications

• Experience in using Workday and Enova would be an asset

• Excellent spoken and written English

• Ability to handle confidential issues with discretion

• Numerical attitude/analytical skills

• Knowledge of HR or Payroll policies and processes

• Customer service experience

• Bachelor’s Degree or equivalent experience

We Offer

International working environment and unique company culture fostering individual career growth and work-life balance
Personal development opportunities and training in industry-leading tools
Friendly and supportive team atmosphere
Participation in global projects and process improvements
Full-time employment contract with competitive salary
Benefits package including medical care, life insurance, My Benefit cafeteria with co-financing for sports activities, employee wellbeing support program
Flexible working hours (start between 7:30–10:00)
Short Fridays (Monday to Thursday we work 8,5h. Friday is a 6-hour workday)
Hybrid or stationary working model — based on your preference
Modern office in an attractive location

Our Commitment to Inclusion

We know that if we are inclusive, we’re more connected — and if we are diverse, we’re more creative. We welcome people for who they are, regardless of age, disability, gender identity or expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, or family status.

Compensation Details:

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance

• Paid time off and holidays

• Retirement benefits (including 401(k) matching)

• Educational reimbursement

• Parental leave

• Employee stock purchase plan

• Tax-saving options

• Disability and life insurance

• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed,  marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.