{"id":1578184,"url":"https://alion.io/job/assystem-payroll-administrator-part-time","title":"Payroll Administrator (Part Time)","company":{"id":5278,"name":"Assystem","domain":"assystem.com","url":"https://alion.io/company/assystem","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":184,"ghost_share":0,"stale_share":0.995,"repost_share":0,"time_to_fill_p50_days":26,"computed_at":"2026-10-02T05:45:00Z"}},"role":"Finance","role_family":"Finance","seniority":null,"employment_type":"part_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bolton, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":39000,"max_usd":104000,"period":"year","method":"role_country_seniority_unknown","sample_n":243},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GDPR","optional":false},{"name":"Microsoft Excel","optional":false}],"status":"live","first_seen_at":"2026-09-30T09:28:53Z","employer_posted_date":"2026-09-30","last_verified_at":"2026-10-02T23:24:31Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.\nAssystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.\n The Role\nAs a Payroll Administrator, you will play a key role in ensuring the accurate and timely processing of payroll for over 1,000 employees. Working closely with the Payroll & Benefits Manager, you will contribute to a reliable and customer-focused payroll function, while supporting benefits administration and ongoing process improvements.\nThe role is offered on a part time basis of 25 hours per week, to be worked over 5 days, with 2 days per week in the office.\nKey Responsibilities\nSupport the accurate and timely processing of monthly payroll, including starters, leavers and contractual changes\nAdminister statutory payments, pensions and employee benefits in line with UK legislation\nSource, collate and verify payroll data from multiple systems and sources, ensuring information is accurate, complete and consistent\nValidate payroll data, carry out thorough checks, and support reconciliations and reporting, investigating discrepancies and escalating issues where needed\nMaintain accurate records and ensure compliance with GDPR and company policies\nRespond to payroll queries and collaborate with internal teams and external providers\nContribute to annual reward processes and continuous improvement of payroll practices\n Previous payroll experience with a solid understanding of UK payroll legislation\nStrong attention to detail, accuracy, and organisational skills, with a methodical approach to checking your own work before submission\nAdvanced Excel skills are essential, alongside proven experience using payroll/HR and other internal systems\nAbility to work confidently across multiple platforms, collating and cross-checking data from different sources\nAbility to learn new systems and processes quickly\nEffective communicator with a customer-focused approach\nDiscreet, proactive, and committed to continuous improvement\n(A CIPP qualification or willingness to study towards one is advantageous.)\n Be part of a purpose-driven organisation supporting the energy transition\nWork within a collaborative and supportive People team\nGain exposure to payroll, benefits, and reward processes\nOpportunity to contribute to process improvements and team development\nFlexible, hybrid working environment\nNOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.\nWe are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.","description_format":"text","description_chars":3426,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Energy & Utilities"],"lifecycle":[{"event":"open","at":"2026-10-01T11:15:11Z"}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":1,"expected_fill_days":26,"reasons":["conf:18","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-10-02T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/assystem-payroll-administrator-part-time","json_url":"https://alion.io/job/assystem-payroll-administrator-part-time.json","meta":{"generated_at":"2026-10-03T01:37:52Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1639,"day_limit":5000,"remaining_today":3361,"minute_limit":60,"resets_at":"2026-10-04T00:00:00Z"}}}