East London, Upminster (East London) 
Part-time 
Store Assistant (Cashier) – 5 Key Reasons to Join MyMiniMix in Upminster
Why This Store Assistant (Cashier) Job in Upminster Is a Smart Career Move
Are you looking for shop assistant jobs UK, retail assistant vacancies, or customer service assistant jobs? Join MyMINIMIX, a growing Eastern European convenience store chain, as a Store Assistant (Cashier) and become part of a fast-paced and friendly retail team. As a Shop Assistant, you will play a key role in delivering excellent customer service in a busy retail environment.
MyMiniMix specialises in Eastern European products, offering a unique retail experience. This Store Assistant (Cashier) role is perfect for someone who enjoys variety, fast-paced teamwork, and helping customers find authentic products from Poland, Romania, Lithuania, and beyond.
Location:
Upminster (East London)
Contract Type:
1-year fixed-term part-time contract with possibility of extension
Pay:
– Main rate: £12.71 per hour
– Overtime rate: £15.89 per hour
6 Core Responsibilities of a Store Assistant (Cashier)
- Providing excellent customer service in English and/or Eastern European languages
- Ensuring all Health & Safety and Food Hygiene procedures are followed
- Handling sales transactions accurately as a till operator/cashier
- Supporting merchandising and stock replenishment (shelves, fridges, displays)
- Assisting with daily store operations in a food retail environment
- Maintaining a clean, organised, and welcoming store at all times
What You Need to Succeed as a Store Assistant (Cashier)
- Previous experience in food retail preferred but not essential (training given)
- Basic English and spoken knowledge of any Eastern European language (Polish, Romanian, Lithuanian, Russian, Ukrainian, Bulgarian, Hungarian, etc.)
- Must have the legal right to work in the UK
- Ability to work flexible retail shifts including weekends and bank holidays
- Positive attitude and willingness to learn
7 Benefits of Becoming a Store Assistant (Cashier) at MyMiniMix
- Staff discounts (2,500+ products) – save on Eastern European groceries
- 28 days holiday (full-time); pro-rata for part-time roles
- Comprehensive training – till systems, food hygiene, and customer service
- Friendly and supportive working environment – team events and social activities
- Team events – regular staff gatherings and celebrations
- Valuable experience in the retail industry – CV booster for future roles
- Long-term job & growth – potential to become supervisor or manager
Typical Working Hours for This Store Assistant (Cashier) Role
Working hours may include weekends and bank holidays. Shifts are typically:
- Morning shift: 7:00 – 14:00
- Afternoon shift: 14:00 – 21:00
- Weekend availability required (Saturday and/or Sunday)
Part-time contracts range from 16 to 25 hours per week, with flexibility to discuss your availability during the interview.
A Typical Day as a Store Assistant (Cashier) at MyMiniMix
Your day starts by checking in with the shift manager, reviewing any new promotions or stock arrivals. You’ll then open your till, handle the morning rush of customers buying fresh bread, deli items, and drinks. Between customers, you’ll replenish shelves, rotate perishable goods, and help merchandising displays. You’ll also assist Eastern European customers who may feel more comfortable speaking their native language. The role is varied — no two days are the same.
Why Work in Upminster? (East London Location Benefits)
Upminster is well-connected via District Line (Tube), c2c rail to Fenchurch Street, and multiple bus routes. Free parking is available nearby. The area has a strong community feel with local cafes, parks, and affordable housing options. This Store Assistant (Cashier) role is ideal for local residents or those commuting from Romford, Hornchurch, Brentwood, or Dagenham.
Career Progression: From Store Assistant (Cashier) to Team Leader
MyMiniMix believes in promoting from within. Many of our current store managers started as Store Assistants (Cashiers). After 6–12 months, you may qualify for:
- Senior Store Assistant (pay increase)
- Shift Supervisor
- Assistant Store Manager
- Store Manager training programme
Frequently Asked Questions (FAQ) – Store Assistant (Cashier) Job Upminster
Do I need previous retail experience to apply?
Preferred but not essential. Full training is provided. If you have customer service, hospitality, or warehouse experience, you are strongly encouraged to apply.
Which Eastern European languages are useful?
Polish, Romanian, Lithuanian, Russian, Ukrainian, Bulgarian, Hungarian, or any other Eastern European language. You only need basic English plus one of these.
Is this a full-time or part-time role?
Part-time (16–25 hours per week) with potential to increase hours during holidays or cover absences.
Can students apply?
Yes, if you have the legal right to work in the UK and can commit to a 1-year fixed-term contract.
How do I apply for this Store Assistant (Cashier) job?
Call 07791559637 (from 11:00 to 20:00) or use the callback request form on this page. No agencies, please.
How to Apply for the Store Assistant (Cashier) Job in Upminster
If you are interested in this Store Assistant (Cashier) role at MyMiniMix Upminster, please call 07791559637 between 11:00 and 20:00, Monday to Sunday. Alternatively, complete the callback request form and a manager will contact you within 24 hours.
Apply now and become part of the MyMINIMIX team – your first step towards a rewarding retail career in East London.