NIKODEM KOSOWSKI
Banbury,Oxfordshire
Summary
Commercially driven sales and digital growth professional with hands-on experience in retail operations, financial responsibility and performance marketing. Trusted as a key holder managing cash flow, store operations and KPI delivery while independently building and monetising a 25,000+ follower digital brand. Strong communicator with proven ability to drive engagement, build client relationships and operate autonomously in fast-paced environments.
Overview
3
3
years of professional experience
7
7
years of post-secondary education
1
1
Certification
Work history
Digital Content Strategist & Online Health Coach
Self-Employed
Banbury, Oxfordshire
06.2025 - Current
- Built and scaled personal brand to 25,000+ cumulative followers across platforms
- Generated 1M+ cumulative views and likes through high-retention, conversion-focused short-form/long-form content
- Monetised audience via 1:1 coaching, digital health, protocols and affiliate partnerships
- Managed private online community and delivered structured client guidance
- Analysed engagement metrics to optimise messaging, retention and conversion rates
Performance Marketing Associate
Roman Power - Digital E-Book
Banbury, Oxfordshire
12.2023 - 04.2024
- Created high-converting TikTok content driving organic traffic and affiliate sales
- Scaled accounts to six-figure views through strategic hook and CTA optimisation
- Monitored engagement and sales data to refine targeting and increase conversions
- Developed practical understanding of digital sales funnels and consumer psychology
Health & Nutrition Sales Advisor (Key Holder)
Holland And Barrett
Banbury, Oxfordshire
05.2024 - 02.2025
- Opened and closed store independently as trusted key holder
- Managed daily cash handling, till preparation and end-of-day reconciliation
- Conducted bank runs and ensured operational readiness for trade
- Delivered personalised supplement consultations, consistently achieving KPIs and loyalty sign-ups
- Executed regional POS campaigns and promotional merchandising updates
- Managed stock rotation and expiry control to protect revenue and reduce waste
Retail Sales Advisor (Seasonal)
Marks & Spencer
Banbury, Oxfordshire
10.2025 - 01.2026
- Managed assigned trading zones with responsibility for stock deployment and merchandising
- Processed high-volume deliveries and executed shop floor replenishment independently
- Maintained visual standards across Home and Clothing departments
- Supported fitting room operations and customer service during peak trading
Retail Sales Associate (Seasonal)
Primark
Banbury, Oxfordshire
10.2023 - 01.2024
- Managed stock control and merchandising to ensure optimal product availability and presentation
- Processed high-volume transactions accurately to enhance customer experience during peak periods
- Supported inventory control and maintained strong shop floor presentation to drive sales and customer satisfaction
- Delivered efficient customer support across multiple departments
Self-Employed Domestic Services Associate
N&S Cleaning
Banbury, Oxfordshire
06.2023 - 09.2023
- Managed client communication, bookings and weekly scheduling
- Built repeat customer relationships through consistent service delivery
- Issued invoices and coordinated payments
- Promoted services via self-produced social media content
- Delivered high-standard detailing across carpets, upholstery and hard floors
Education
A-Levels - History, Business, Information Technology,
Blessed George Napier Catholic School and Sports College
Banbury 01.2017 - 01.2024
Skills
- Sales & KPI Performance
- Cash Handling & Financial Accountability
- Client Communication & Relationship Management
- Digital Growth & Audience Monetisation
- Content Strategy & Conversion Optimisation
- Store Operations & Merchandising Execution
- Remote Self-Management & Initiative
Certification
- Retail Skills Certificate (A-Level Equivalent)
- Holland And Barrett
- QTA
- (Qualified to Advise)
- A nationally recognized Level 2 qualification
- In-depth training in nutrition and supplements
- Allows staff to provide personalized advice to customers
- 2024 - 2025
Language
English
Master or proficient
C2
Polish
Master or proficient
C2
References
- 3880@hollandandbarrett.com, 0330 058 2640, Holland And Barrett
- 01295 273036, Primark
Contact
- Phone: 07453172081
- Email: nikodemkosowski27@gmail.com
- Address: 30a Albert Street OX16 5DG
Timeline
Retail Sales Advisor (Seasonal)
Marks & Spencer
10.2025 - 01.2026
Digital Content Strategist & Online Health Coach
Self-Employed
06.2025 - Current
Health & Nutrition Sales Advisor (Key Holder)
Holland And Barrett
05.2024 - 02.2025
Performance Marketing Associate
Roman Power - Digital E-Book
12.2023 - 04.2024
Retail Sales Associate (Seasonal)
Primark
10.2023 - 01.2024
Self-Employed Domestic Services Associate
N&S Cleaning
06.2023 - 09.2023
A-Levels - History, Business, Information Technology,
Blessed George Napier Catholic School and Sports College
01.2017 - 01.2024