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.

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

The purpose of this role is to support the development and maintenance of the knowledge portal. You will join HR Global Delivery Organization (GDO International) team and you will closely cooperate with colleagues from Poland, UK, USA and other countries.

Responsibilities:

• Supporting the development, editing and formatting of HR knowledge

• Building HR knowledge into the ServiceNow knowledge base

• Supporting ongoing maintenance of knowledge within the ServiceNow knowledge base to ensure accuracy, consistency and compliance with standards

• Maintaining internal GDO documentation (SharePoint)

• Managing workload via cases within ServiceNow

• Collaborating with HR knowledge owners, subject matter experts, and internal stakeholders to gather information and support content updates 

• Assisting in projects aimed at closing knowledge gaps or implementing updates driven by HR process changes

• Contributing ideas for improving knowledge management practices and user experience within the knowledge base 

• Supporting broader knowledge management initiatives under the guidance of more senior team members

• Additional duties regarding knowledge base or process improvements might be required

Requirements

• Experience in using MS office package (especially Word)

• Understanding of shared workspace platforms (SharePoint, MS Teams, etc.)

• Fluent English- B2/C1

• Willingness to write simple, accurate, attractive and user-friendly communications, manuals, instructions and FAQs

• Basic understanding of HTML or willingness to learn

• Comfortable working with digital tools and eager to develop technical skills 

• Self-motivated and well-organized person

• Strong communication skills and willingness to collaborate with a variety of stakeholders 

• Time management skills and ability to set up priorities

• Several years of experience in HR.

• Experience in knowledge management, content creation, service delivery or a related area would be an asset

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:

Information regarding the salary for this position will be shared at later stages of the recruitment process, in a way that ensures transparent and well-informed negotiations

       

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:

02/20/2026 - Until Filled

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.