At a Glance
- Tasks: Support HR operations and payroll processes in a dynamic London office.
- Company: Join Sigma.AI, a global leader in AI data collection and annotation.
- Benefits: Competitive salary, collaborative culture, and opportunities for professional growth.
- Other info: Exciting career growth in a supportive and innovative environment.
- Why this job: Make an impact in the fast-paced world of AI while developing your HR skills.
- Qualifications: 1-3 years in HR or payroll, strong organisational skills, and attention to detail.
The predicted salary is between 30000 - 40000 £ per year.
Join Sigma.AI – Shaping the Future of Artificial Intelligence. Sigma is a leading global technology company specializing in data collection and annotation for Artificial Intelligence. With over 30 years of experience, offices in Spain, the United States, and the United Kingdom, and operations in more than 700 languages, we support multinational clients in developing cutting-edge AI solutions.
Soft Skills We Value
Are you a proactive professional who enjoys challenges, values collaboration, and approaches every task with empathy, integrity, and a passion for learning? If so, we’d love to hear from you!
About the Role
We are looking for a proactive and detail-oriented HR & Payroll Administrator to support our Human Resources and Administrative functions in our London office. This role is ideal for someone with a solid foundation in UK employment law, payroll processes, and HR administration, who is looking to grow within a dynamic and fast‑paced environment. You will play a key role in supporting day‑to‑day HR operations, ensuring compliance with UK regulations, and maintaining accurate employee records. You will play a key role in ensuring smooth day‑to‑day operations by supporting payroll preparation, employee administration, and cross‑departmental coordination.
Key Responsibilities
- Prepare and organize basic payroll data for submission to the external payroll provider
- Provide administrative support in managing employee holidays, absences, and time tracking
- Assist in the preparation of employment-related documentation (contracts, termination letters, certificates, etc.)
- Support the Health & Safety (Occupational Risk Prevention) and Finance departments with administrative tasks
- Maintain accurate and up‑to‑date employee records and documentation
- Assist with general administrative duties as required
Requirements
- 1–3 years of experience in HR administration and/or payroll
- Strong organizational skills and attention to detail
- Good communication skills, both written and verbal
- Ability to handle sensitive information with confidentiality
- Proficiency in Microsoft Office (Excel, Word, Outlook)
- Ability to multitask and prioritize effectively in a dynamic environment
- Fluency in English
- Ability to work on‑site in London
Nice to Have
- CIPD Level 3 (completed or in progress)
- Experience with HR systems (e.g. Workday, BambooHR, Sage, etc.)
- Experience in fast‑paced or high‑growth environments
- Spanish language skills
Important Notes
Sigma.AI does not hire through third parties. No agents’ intermediaries or third parties are authorized to represent benefit from or participate in any way in the relationship. To this effect the Candidate agrees to provide any documentation or information reasonably requested by the Company to verify their identity and credentials. Should the Candidate fail to provide enough evidence of their identity to Sigma’s satisfaction, Sigma shall be entitled to withhold or terminate any offer with the Candidate. The company may employ or rely on artificial intelligence systems in its selection processes. Such processing is carried out in an ethical, transparent, and legally compliant manner. The purpose of the processing is to evaluate the tests submitted in the course of the selection process (for instance the transcribed content provided by the candidate). The legal basis for processing your data is the pre‑contractual relationship between the parties and/or the provision of requested services.
Need Help? We’re here for any questions or concerns. Join us and be part of something global, innovative, and impactful. Sigma.AI – Data done right.
StudySmarter Expert Advice🤫
We think this is how you could land HR & Payroll Administrator - On-site (London)
✨Join HR Networks
Get involved in HR-specific communities, like the Chartered Institute of Personnel and Development (CIPD) and local HR meetups. This is a fantastic way to connect with industry professionals and learn about job openings before they even hit job boards!
✨Make Your Presence Known
Attend HR conferences and workshops in your area to network with potential employers. Don't be shy—introduce yourself, exchange business cards, and let them know you're keen on a full-time role in HR. Who knows, you might just land a friendly face at Sigma!
✨Leverage Your University Connections
If you’re a recent grad or still in uni, tap into your career services and alumni network. Many universities have connections with companies looking for HR talent, so get those leads and apply through our website for a smoother application process.
✨Showcase Your HR Passion
Create content around HR topics you’re passionate about, like employee engagement or diversity initiatives. Share articles or insights on LinkedIn to demonstrate your knowledge and get noticed by recruiters. It’s a subtle yet effective way to show you’re the right fit for a full-time role at Sigma.
We think you need these skills to ace HR & Payroll Administrator - On-site (London)
Some tips for your application 🫡
Show Off Your HR Skills:When you’re crafting your CV, make sure you highlight specific HR skills that are relevant to the role at Sigma. Include any experience with recruitment processes, employee relations, or performance management, and don’t forget to mention your familiarity with HR software or tools that could give you an edge.
Tailor Your Cover Letter:Your cover letter is your chance to shine, so tailor it to Sigma and the specific HR role. Highlight your passion for people management and how your unique approach can help foster a positive workplace culture. Be sure to sprinkle in examples from your past experiences that illustrate your problem-solving abilities and interpersonal skills.
Include Relevant Certifications:If you’ve got any HR certifications or relevant training under your belt, be sure to showcase them! These qualifications can really set you apart from other candidates when applying for this full-time HR position at Sigma. List them prominently on your CV to catch the hiring manager's eye.
Align with Company Culture:Make sure your application speaks to Sigma's values and culture. Research the company and align your experiences or values with what they stand for. This will show them that you're not only a fit for the role but also for the overall vibe of the team and organisation.
How to prepare for a job interview at Sigma
✨Brush Up on HR Best Practices
As you're diving into human resources, it’s crucial to be well-versed in the latest HR practices and legislation. Get familiar with key topics like employee engagement, talent acquisition, and diversity initiatives, as these could easily pop up in your interview with Sigma.
✨Know Your Recruitment Tools
Most HR roles involve using various recruitment tools and ATS (Applicant Tracking Systems). Make sure you can comfortably discuss platforms like Workday or Greenhouse. If you've had direct experience, share those examples; if not, show your eagerness to learn!
✨Highlight Your People Skills
A full-time HR role at Sigma will require strong interpersonal skills. Prepare to share stories that demonstrate how you’ve successfully navigated conflicts or supported team members in past experiences. Authenticity goes a long way in this field.
✨Stay Current with HR Trends
Being up to speed with current HR trends, like remote working protocols or mental health initiatives, can set you apart. Be ready to discuss how these trends could impact Sigma and how you would contribute to adapting HR strategies.
