Senior Assistant Civil Engineer

Join Our New Integrated Delivery Solutions teams in Kraków and Warsaw!

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.

We’re building something exciting in Kraków and Warsaw — a new Integrated Delivery Solutions team (IDS) and we are looking for a Senior Assistant Civil Engineer/ Starszy Asystent/ Starsza Asystentka Projektanta Budownictwa Lądowego.

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

About the Role

The Senior Assistant Civil Engineer will support Amentum’s Integrated Delivery Solutions (IDS) team in delivering civil engineering solutions for complex and highly regulated projects across sectors such as defence, industrial, energy, and infrastructure. You will contribute to civil engineering design tasks, preparing technical deliverables, coordinating with multi‑disciplinary teams, and ensuring compliance with applicable standards and client governance.

The role requires knowledge and experience in civil engineering (e.g., site development, drainage, utilities, earthworks, pavements, roads) and basic knowledge of related disciplines, including geotechnical, structural, environmental, architectural, and MEP interfaces.

Although the role is based in Poland, projects often follow UK, European, US and client-specific standards.

Key responsibilities:

• Perform civil engineering design for site development, grading and drainage, stormwater management, flood protection, earthworks, terrain modelling, cut-and-fill analysis, underground utilities, access roads, pavements and associated infrastructure

• Develop 3D models, drawings, layouts and detailed design documentation

• Apply and interpret UK and European design standards.

• Use engineering best practices and insights from internal/external experience to improve design quality, constructability, safety, sustainability, and lifecycle performance.

• Coordinate with Civil, Structural, Geotechnical, MEP, Architecture, Fire, and Environmental disciplines to resolve interfaces and support integrated design delivery.

• Ensure compliance with IDS governance, quality procedures, and document control requirements.

Core Competencies

• Technical Foundations: Solid understanding of civil engineering principles for site development, drainage systems, earthworks, utilities, access roads, pavements,

• Learning Orientation: Demonstrates continuous learning and is actively acquiring higher‑level knowledge and skills.

• Problem Solving: Able to solve straightforward engineering problems using standard methods and supervision.

• Guidance & Independence: Works independently on simpler tasks; requires moderate guidance on more complex ones.

• Communication: Clear written and verbal communication in English and Polish; able to summarise engineering work concisely.

• Collaboration: Effective team player within multi‑disciplinary and international teams.

• Quality & Accuracy: Good attention to detail; follows procedures and applies feedback to improve quality.

• Digital & BIM Awareness: Comfortable working in digital environments; ability to interact with BIM models.

• Company Knowledge: Actively builds understanding of Amentum’s structure, governance, and project delivery processes.

Qualifications - External

• Degree in Civil Engineering (MSc/MEng preferred). 

• 2-5 years of experience in civil engineering design within infrastructure. 

• Strong understanding of UK/European standards

• Familiarity with US codes is an advantage. 

• Experience in relevant tools: Civil 3D, MicroDrainage/InfoDrainage, QGIS, Navisworks, or equivalent. 

• Experience collaborating within BIM workflows (Revit, Civil 3D, Navisworks). 

• Fluent written and spoken English (B2 or higher) 

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.

#IDSPLCIV

Compensation Details:

Compensation 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:

09/14/2026 - 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.