Jessica O’Brien

Marketing Officer · London, UK

jessica.lucy.obrien@gmail.com LinkedIn +44 7864 040 330

Marketing professional with 5 years' experience designing and optimising multi-channel customer journeys across email, SMS, direct mail and telemarketing. Experienced in marketing automation, customer onboarding, A/B testing, reporting and performance optimisation to drive conversion outcomes.

Experience

Legacy Marketing Officer

Macmillan Cancer Support · 2021 – present

Increased legacy enquirer-to-pledger conversion by 83% through multi-channel lifecycle marketing campaigns.

Reduced reporting time by 80% through the creation of a self-built Power BI dashboard analysing customer conversion behaviour.

Doubled email click-through rate through behavioural insight-led testing and optimisation.

83% increase in conversion

Through multi-channel lifecycle marketing campaigns.

80% reduction in reporting time

Through the creation of a self-built analysis dashboard.

2× click-through rate

Through behavioural insight-led testing.

Designed and launched our most sophisticated automated RSVP and onboarding journey, reducing confirmation times from over a week to under 15 minutes.

Led on 5 large-scale Gifts in Wills events driving a 98%+ CSAT score.

Jessica speaking at a Macmillan Gifts in Wills event

Guests seated at a Macmillan Gifts in Wills event

Legacy Marketing Assistant

Macmillan Cancer Support · 2021

Provided data analysis and financial support across the Free Will Service to monitor product performance and identify key trends. These insights informed optimisation decisions that improved the customer journey and supported increased conversion to legacy pledge.

Admissions Officer

Lake Farm Park Academy · 2020 – 2021

Led the admissions function at Lake Farm Park Academy, managing the onboarding of new starters and ensuring all documents were completed accurately and in line with compliance requirements.

Operations Assistant

Social Lab Ogilvy · 2019

Managed complex team diaries, UK and international travel, and freelance resource coordination. Provided financial and project support to ensure effective and efficient running of the team.

Content Producer

Centaur Media · 2018

Researched marketing trends to support the development of the Festival of Marketing event content. Supported with speaker outreach, website updates and festival operations on the day.

Media Planner

EssenceMediaCom · 2017 – 2018

Developed media recommendations using consumer research and insight, supported client workshops, post-campaign analysis, financial management and competitor tracking to help inform campaign planning and performance.

Media Executive

EssenceMediaCom · 2015 – 2017

Completed an 18-month school leaver scheme, rotating across departments and gaining exposure to OOH, radio, DRTV and digital media planning, buying and campaign optimisation.

Skills

Lifecycle marketing
Customer journeys
Marketing automation
A/B testing
Behavioural insight
Copywriting
Market research
Media planning
Data analysis
Event management
Project management
Budget management
Stakeholder management
Public speaking
Mentoring
DotDigital
Power BI
Excel
Canva
Figma

Passions

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Jessica performing on stage with a guitar

The Calm In Your Song

Jessica O’Brien

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London Landmarks Half Marathon

2026

I ran the 13.1 mile race through London in April 2026, raising vital funds for Mind. Fitness and wellness are a huge passion of mine and I’m looking forward to taking on more running challenges in the future!

Jessica running the London Landmarks Half Marathon

Future Frontiers Mentoring Scheme

2025

I participated in the Future Frontiers mentoring scheme, supporting two Year 10 students over six weeks to explore their interests and consider future career pathways. I found the experience highly rewarding, supporting their growing confidence and guiding them through early career choices.