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Location
In office (Sharon)
Seniority
Middle · 3+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 9, 2026. First seen by Alion on Nov 9, 2026. Senior scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Senior plc is a British engineering group headquartered in Rickmansworth, England, and listed on the London Stock Exchange. It operates through two divisions, Aerospace and Flexonics, which design and manufacture fluid conveyance systems, thermal management systems, flexible ducting, precision-machined structural components and exhaust and emissions components for aerospace, defence, automotive, truck and industrial customers. The group runs manufacturing sites in the United Kingdom, the United States, Mexico, Germany, India and other countries, and hires machine operators, maintenance mechanics, electricians, production supervisors and accountants.

Be the Organizational Powerhouse behind our Growth

We're seeking an exceptionally organized, experienced HR Administrator to support our people operations during a period of significant growth. As our organization rapidly expands, we need someone who excels at managing competing priorities, thrives on the details and takes pride in keeping HR operations accurate, efficient, and running seamlessly.

The Opportunity

We're growing fast-and we need an exceptional HR Administrator who is ready to grow with us!

With plans to add over 100 new team members over the next year, we're looking for a highly organized, detail-driven HR professional who thrives in a fast-paced environment and takes pride in providing employees with first class service.

This is an exciting opportunity for the right person to take ownership of essential HR operations, from onboarding new employees and maintaining accurate HR data to coordinating employee engagement events and supporting our expanding workforce.

What You'll Own

Onboarding & Employee Experience

  • Own the new-hire onboarding process, ensuring an organized and welcoming experience on new employee's first day.

  • Coordinate pre-employment requirements, new-hire paperwork, orientations, and employee communications.

  • Plan and execute employee engagement events, appreciation activities, and company celebrations.

HR Systems & Data Integrity

  • Maintain accurate employee records in ADP, ensuring exceptional data accuracy and integrity.

  • Process employee change forms, including promotions, transfers, compensation changes, and terminations.

  • Conduct data audits, maintain personnel records, and generate HR reports.

HR Administration & Process Improvement

  • Support benefits administration, employee leave requests, and HR compliance activities as needed.

  • Identify opportunities to streamline processes, improve efficiency, and introduce fresh approaches to HR practices.

  • Serve as a responsive, professional resource for employees and managers.

About You:

  • You have a HS degree and at least 3 years of HR administrative experience, in a fast-paced or high-growth environment.

  • You're passionate about helping others and take pride in being a trusted, approachable resource that employees and colleagues can count on.

  • You thrive on organization, are great at attention to detail, and can manage competing priorities.

  • You have hands-on experience with ADP HRIS, preferably ADP Enterprise V6 and a systems thinking mindset.

  • You're a Microsoft Outlook power user with exceptional scheduling and calendar management skills, along with strong proficiency in Excel, Word, and PowerPoint.

  • You're passionate about creating thoughtful, memorable employee experiences that make people feel valued, appreciated, and connected."

  • You've have experience with onboarding new employees, making them feel welcome and informed.

  • Employee data management and accurate HR transactions are non-negotiable.

  • You value communication and customer service, both in person and in writing, making employees feel heard and understood.

  • You are proactive, have an adaptable mindset and are comfortable bringing forward ideas for continuous improvement.

Even Better if you:

  • Have familiarity with Massachusetts Paid Family and Medical Leave (PFML) and employee benefits administration.

  • Have pursued an HR Certification (SHRM,HRCI,NEHRA) because you're serious about your career.

  • Have supported a rapidly growing organization.

Who Will Thrive Here?

You're an organizational powerhouse. You keep multiple priorities moving without missing a detail.

You're meticulous. Accuracy matters to you, and you take pride in getting things right.

You're proactive. You anticipate needs, solve problems, and take ownership.

You're a process improver. You bring fresh perspectives and aren't afraid to suggest a better way.

You're adaptable. You thrive in an environment where things move quickly and every day brings something new.

Salary Range: 26.50-34.00/ hourly

FLSA: Non-Exempt (Hourly, overtime eligible)

Monday - Friday onsite, occasional night and weekend work to support employee events such as holiday parties and service awards.

Good-Faith Disclosure Note: In compliance with Massachusetts Pay Transparency Law, this range represents the good-faith annual salary or hourly wage range that Metal Bellows reasonably expects to pay for this position. Final placement within the band depends on relevant factors such as experience, education, skills, and internal equity.

Trade Compliance Statement Access to our facilities is restricted under the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR) to U.S. Persons (U.S. Citizens, lawful permanent residents, U.S. Nationals, U.S. refugees, asylees, or temporary residents under amnesty provisions ), and to properly licensed foreign persons. Applicants receiving a conditional offer of employment will be required to provide information to determine whether they are subject to these regulations and, if so, to assess their country of chargeability for export control purposes. Additionally, potential employee names will be screened against the Consolidated Screening List (maintained by the United States government) to determine eligibility to receive controlled technical data.

To ensure there is no unexpected delay to your start date with our Company and due to the potential need to obtain an export license, we would like to promptly assess whether such a license is needed to access our facility and/or systems. Such licenses can take several weeks/months to obtain from the U.S. Government. Our Trade Compliance department may reach out to you with a Licensing Assessment form, which we request you kindly complete and return as soon as possible.

Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions. EOE M/F/D/V/VEVRAA Federal Contractor

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